Hioki 3332 Instruction Manual

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Instruction Manual

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3332

品名を入力。

POWER HiTESTER

August 2013 Revised edition 10 3332A981-10 13-08H

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Contents

Introduction i Inspection Safety Notes Notes on Use

Chapter 1 Overview 1

1.1 Product Overview

1.2 Features

1.3 Identification of Controls and Indicators

1.4 Explanation for Keys

1.5 Display Reference

1.6 Handle and Stand Operations

Chapter 2 Preparation for Measurement 11

2.1 Before Measurement

2.2 Simple Use

11 13

1 2 3 4 6 9

2.3 Making the Connections

2.3.1 Direct Connections 14

2.3.2 When Using PT or CT 16

2.3.3 Notes on Connection Methods 17

2.4 Powering On

2.5 Self Test

18 19

Chapter 3 Basic Operation 21

3.1 Changing the Response Setting

3.2 Selecting the Rectifier Type

3.3 Selecting the Display

3.4 Selecting the Range

3.5 Holding the Display

3.5.1 Restrictions During the Hold Status 27

3.5.2 Current Waveform Peak Hold Function and Maximum Value Measurement 28

21 22 23 25 27

3.5.3 Restrictions During the Peak Hold Status 29

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Chapter 4 Settings and Operations 31

4.1 Setting Items

4.2 Operating Setup Keys

4.3 Setting the Integration

4.3.1 Flowchart 33

4.3.2 Integration Setting Method 33

4.3.3 Integration Operation 34

4.3.4 Notes on Integration 35

4.3.5 Display Format of Integrating Value 38

4.4 Setting the Number of Averaging

4.4.1 Flowchart 40

4.4.2 Average Setting Method 40

4.5 Setting the Frequency

4.5.1 Flowchart 42

4.5.2 Frequency Setting Method 42

4.6 Setting the D/A Output

4.6.1 Flowchart 44

4.6.2 D/A Output Setting Method 44

31 32 33

4.7 Setting the PT (Potential Transformer) Ratio, CT (Current Transformer) Ratio, and SC (Scaling Factor)

4.7.1 Flowchart 47

4.7.2 PT/CT Ratio and SC Setting 47

4.8 Setting the Printer Output

4.8.1 Flowchart 49

4.8.2 Printer Output Setting Method 49

4.8.3 Connecting to the Printer 52

4.9 Setting the Interface

4.9.1 Flowchart 53

4.9.2 Interface Setting 53

4.10 Setting the Comparator

4.10.1 Flowchart 56

4.10.2 Comparator Setting Method 56

4.10.3 Comparator Operation 58

4.11 Displaying Comparator

4.11.1 Flowchart 59

4.11.2 Comparator Display Setting Method 59

4.12 Selecting Range

4.12.1 Flowchart 62

4.12.2 Range Setting Method 62

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Chapter 5 Setting and Measurement Example 65

5.1 Electrical Power Integration and Printer Output Examples

5.2 PT and CT Setting

and Moving the Decimal Point)

(Examples of Changing the Digits

Chapter 6 Other Functions 73

6.1 When Power Fails

6.2 System Resetting

6.3 Error Indications

6.4 Changing the Power Calculation Circuit Clock Frequency

6.5 Key Lock State

73 74 75

76 77

Chapter 7 External Control Terminal and Output

Terminal 79

7.1 Connector Pin Assignment

7.2 Output Terminal

7.3 Comparator Output

79 81 82

7.4 External Control Terminal

7.5 Making the Connections

83 85

Chapter 8 GP-IB/RS-232C Interface 87

8.1 Specifications

8.1.1 GP-IB Interface 87

8.1.2 RS-232C Interface 88

8.2 Identification of Controls and Indicators

8.3 Interface Outline

8.3.1 Features 92

8.3.2 Messages 92

8.3.3 Command Syntax 93

8.3.4 Headers 93

8.3.5 Message Terminators 94

8.3.6 Separators 94

8.3.7 Data Formats 95

91 92

8.3.8 Abbreviation of Compound Commands 96

8.3.9 Output Queue 96

8.3.10 Input Buffer 97

8.3.11 Status Model 97

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8.3.12 Status Byte Register 98

8.3.13 Event Registers 99

8.3.14 GP-IB Commands 104

8.4 Command Reference

8.4.1 Standard Commands 106

8.4.2 Commands Specific to the 3332 114

8.5 Command Summary

8.5.1 Standard Commands 169

8.5.2 Commands Specific to the 3332 170

8.5.3 Valid Command According to Condition (Standard Command) 174

8.5.4 Valid Commands According to Condition (Specific Command) 175

8.5.5 Execution Time of GP-IB Interface Command 179

8.5.6 Initialization 180

8.5.7 Specific Command Tree 181

8.6 Sample Programs

8.6.1 GP-IB 183

8.6.2 RS-232C 184

8.7 Printer Output Function

105

169

183

185

8.7.1 Printer Mode Function 185

8.7.2 Type of Printing 185

8.7.3 Selecting Printing Items and Setting Printing Interval Time 186

8.7.4 Printer Output Buffer 186

8.7.5 Printing in Power Cut 186

8.7.6 Printing Example 187

8.8 Device Compliance Statement

8.9 Notes on Interface

8.9.1 GP-IB Troubleshooting 192

8.9.2 RS-232C Troubleshooting 194

190 192

Chapter 9 Maintenance and Service 195

9.1 Disposing

9.2 Cleaning and Storing of the Unit

195 196

Chapter 10 Rack Mounting 197

10.1 Making Rack Mounting Fittings

10.2 Installation Procedures

197 200

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Chapter 11 Specifications 203

11.1 General Specifications

11.2 Standard Specifications

11.3 Function Specifications

203 205 208

Index INDEX 1

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Introduction

Thank you for purchasing this HIOKI "3332 POWER HiTESTER." To get the maximum performance from the unit, please read this manual first, and keep this at hand.

Inspection

When the unit is delivered, check and make sure that it has not been damaged in transit. In particular, check the accessories, panel switches, and connectors. If the unit is damaged, or fails to operate according to the specifications, contact your dealer or HIOKI representative.

■ Standard accessories

NOTE

Instruction Manual 1 Power cord 1 Connector (DB-25P-N) 1 (Japan Aviation Electronics Industry, Limited or equivalent) (Shell DB19678-2)

■ Shipment

If the 3332 unit is to be shipped or transported, the original packing should preferably be used. If this is not available, employ the following procedure.

1. Procure a packing case somewhat larger than the unit, such as a cardboard box.

2. Wrap the unit in plastic sheeting.

3. Pack the unit wrapped in this cushioning material into the box, pack in the accessories, add more cushioning to fill the box tightly, and then seal it with adhesive tape. If required, secure the case with shipping twine.

When reusing the original for the unit, use cushioning to secure the unit so the unit will not move around in the box.

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Introduction

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Safety Notes

This Instruction Manual provides information and warnings essential for operating this equipment in a safe manner and for maintaining it in safe operating condition. Before using this equipment, be sure to carefully read the following safety notes.

DANGE R

Safety symbols

This equipment is designed according to IEC 61010-1 Safety Standards, and has been tested for safety prior to shipment. During high voltage measurement, incorrect measurement procedures could result in injury or death, as well as damage to the equipment. Please read this manual carefully and be sure that you understand its contents before using the equipment. The manufacturer disclaims all responsibility for any accident or injury except that resulting due to defect in its product.

・ This symbol is affixed to locations on the equipment where the

operator should consult corresponding topics in this manual (which are also marked with the symbol) before using relevant functions of the equipment.

・ In the manual, this mark indicates explanations which it is

particularly important that the user read before using the equipment.

Indicates a grounding terminal.

DANGE R

WARNING

CAUTION

NOTE

Indicates AC (Alternating Current).

Indicates the switch is ON.

Indicates the switch is OFF.

The following symbols are used in this Instruction Manual to indicate the relative importance of caut i ons and warnings.

Indicates that incorrect operation presents extreme danger of accident resulting in death or serious injury to the user.

Indicates that incorrect operation presents significant danger of accident resulting in death or serious injury to the user.

Indicates that incorrect operation presents possibility of injury to the user or damage to the equipment.

Denotes items of advice related to performance of the equipment or to its correct operation.

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Safety Notes

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Measurement categories

This instrument complies with CAT III safety requirements. To ensure safe operation of measurement instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT II to CAT IV, and called measurement categories.

CATⅡ

CATⅢ

CATⅣ

Primary electrical circuits in equipment connected to an AC electrical outlet by a power cord (portable tools, household appliances, etc.) CAT II covers directly measuring electrical outlet receptacles.

Primary electrical circuits of heavy equipment (fixed installations) connected directly to the distribution panel, and feeders from the distribution panel to outlets receptacles..

The circuit from the service drop to the service entrance, and to the power meter and primary overcurrent protection device (distribution panel).

Using a measurement instrument in an environment designated with a higher-numbered category than that for which the instrument is rated could result in a severe accident, and must be carefully avoided. Use of a measurement instrument that is not CAT-rated in CAT II to CAT IV measurement applications could result in a severe accident, and must be carefully avoided.

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Safety Notes

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Notes on Use

In order to ensure safe operation and to obtain maximum performance from the unit, observe the cautions listed below.

DANGE R

WARNING

This unit cannot be used on voltage lines of 600 Vrms. If the voltage exceeds 600 VAC, there will be a short-circuit accident or electrocution accident will result.

The maximum input voltage and current are 600 Vrms, 60 Arms. Do not exceed the maximum input voltage and current. Doing so can damage the unit or cause a serious accident.

The maximum rated voltage between input terminals and ground is 600 Vrms. Attempting to measure voltages exceeding 600 Vrms with respect to ground could damage the instrument and result in personal injury.

Always connect the powermeter input to the secondary side of the breaker. On the secondary side of a breaker, even if the lines are shorted the breaker can trip and prevent an accident. On the primary side, however, the current capacity may be large, and in the event of a short-circuit there may be a serious accident.

Before turning on the power, make sure that the voltage of the power supply being used matches the supply voltage indicated on the rear panel of the unit. If an attempt is made to use an improper supply voltage, there is danger of damage to this unit and of lifethreatening risk to the operator. In order to prevent electric shock and short-circuit accidents, shut off the power to the line to be measured before connecting the direct connection voltage and current cables to the terminals. Be sure to connect the voltage input terminals or current input terminals correctly. Measurement which is attempted with the wiring connected incorrectly may cause damage to the unit or a short-circuit. Since the power switch is of a micro gap construction, always use near an outlet. When not in use and when connecting a device to be measured, make sure that the power cord is unplugged, or any other means so that the unit is cut off from the power. The unit is constructed so as to be connected to a ground line via a three-core power cord that is supplied with the unit. To avoid electrical accidents and to maintain the safety specifications of this instrument, connect the power cord provided only to a 3-contact (two-conductor + ground) outlet. Do not remove the case of the unit. There are components inside carrying high voltages or becoming hot, and this could cause an electric shock accident. Do not use the unit where it may be exposed to corrosive or explosive gases. The unit may be damaged, or explosion may occur.

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Notes on Use

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CAUTION

・ Before measurement, check the position of the measurement range.

The unit may be damaged if voltage or current at levels in excess of the measurement limit is applied for a long time.

・ To avoid damage to the unit, do not short the output terminal and do

not input voltage to the output terminal.

・ Do not store or use the unit where it will be exposed to direct sunlight,

high temperatures, high humidity, or condensation. If exposed to such conditions, the unit may be damaged, the insulation may deteriorate, and the unit may no longer satisfy its specifications.

・ This unit is designed for indoor use and can be safely used at

temperatures ranging from 0℃ to 40℃.

・ To avoid damage to the unit, do not subject the equipment to

vibrations or shocks during transport or handling. Be especially careful to avoid dropping the equipment.

・ Should the unit emit smoke, or a strange smell or strange sound,

immediately stop testing operations, power the unit off, and remove the power cord from the outlet, shut off the circuit being tested, disconnect the unit, and consult your HIOKI representative. Continued use of the unit could lead to fire or electric shock accidents.

・ Do not insert foreign objects through the ventilation holes. Particularly

if metallic, liquid, or combustible substances get inside the case, this may lead to fire or electric shock, or to malfunction.

・ Do not use the unit near any device which generates strong

electromagnetic radiation or near a static electrical charge, as these may cause errors.

・ To prevent electric shock, do not allow the unit to become wet and do

not use the unit when your hands are wet.

・ This unit is not constructed to be waterproof or dustproof, so do not

use it in a very dusty environment or in one where it will get wet.

・ Do not place the unit on an unstable stand, or in an uneven location. It

may fall to the ground, or fall over, and either of these events may lead to malfunction or accident.

・ Avoid treading on or pinching the cable so as not to damage the cable

sheaths.

・ Keep the cables well away from heat, to prevent the possibility of

melting the insulation. ・ For long-term storage, remove the power cord. ・ Do not use the unit near any device which generates strong

electromagnetic radiation or near a static electrical charge, as these

may cause errors. ・ The recommended calibration interval for this instrument is six months.

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Notes on Use

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NOTE

･ This unit is electrically configured specifically for AC currents. Thus signals

with elements of DC currents (such as all-wave rectifier) cannot be measured.

･ For accurate measurement, allow the unit to warm up for more than half an

hour before starting operation.

･ Note that limits are specified for the range in which voltage and current level

accuracies are guaranteed.

･ The values for apparent power (S), reactive power (Q), power factor (λ)

and phase angle (φ) produced by this unit are computed from the measured voltage (U), current (I), and active power (P), using the expressions given in the specifications. The values given may be different from those measured with an instrument of different operating principles or using different calculation expressions.

･ This machine's integration value is derived from the measured values of the

electrical current and electrical power and calculated by the software. The integration value may be different from other instruments that have differing response times, sample rate or calculation expressions.

･ Accurate measurement may be impossible in locations subject to strong

external magnetic fields, such as transformers and high-current conductors, or in locations subject to strong external electric fields, such as radio transmission equipment.

･ Due to the internal circuitry, when measuring objects that contain certain

specific wave lengths, the indicated value of power may periodically shift and not settle down. (Specifically, this occurs when measuring distorted waves containing a large amount of high frequency waves which are the even number multiple of 2.44 kHz.)

･ When the input is less than 0.1% of the measurement range for current and

less than 40μA, the indication is forcibly set to zero. It is also set to zero when the input is less than 0.2% of the measurement range for voltage, or less than 0.1% for active power.

･ The 3332 has a frequency measurement function, but this may produce

unexpected results on a waveform which is severely distorted.

･ When a maximum rated voltage to earth of high frequency is applied (as for

example when measuring the secondary side of an inverter), errors may occur in the measured values.

･ To ensure the accuracy of measurement be careful not to let the unit

overheat. (Keep away from sources of heat, and provide sufficient ventilation space around the unit, or when rack-mounted provide a cooling fan.)

･ This instrument may cause interference if used in residential areas. Such use

must be avoided unless the user takes special measures to reduce electromagnetic emissions to prevent interference to the reception of radio and television broadcasts.

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Notes on Use

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Chapter 1

1.1 Product Overview

The 3332 POWER HiTESTER is a single-phase power measurement instrument for AC currents suitable for measuring the power of household electrical appliances.

With this one unit, it is possible to measure voltage, current, active power, apparent power, reactive power, the power factor, phase angle, frequency, integrated value, and current peak value. By using the peak-hold function, the peak value of the current waveform during powering on can be measured.

Overview

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1.1 Product Overview

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1.2 Features

(1) Meets the safety requirements of IEC61010-1. (2) Wide broad band from 1 Hz to 100 kHz. (3) In reactive power, power factor, and phase indication, it is possible to

recognize the phase is lead or lag. (4) The current range is wide. (from 1 mA to 50 A) (5) Analog output for voltage, current, and active power is provided. (3 channels

simultaneously output) (6) Monitor output (waveform output) for voltage and current is provided. (2

channels simultaneously output) (7) It is possible to measure the plus, minus, total integrations of power and

current simultaneously. (8) The terminals for voltage and current measurements are insulated. (9) All measurement data has synchronism.

(10) By using the GP-IB Interface and the RS-232C Interface, it is possible to

print out this uni t's controls an d data.

(11) This unit will convert either voltage, current, effective power, apparent

power, reactive power, power factor, phase angle, frequency, integration

value, and current peak value into ±5 V f.s. direct voltage and output from

the D/A output terminal.

(12) With the 50 A range, large currents can be accurately measured. (13) With the 1 mA range, minute currents can be accurately measured. (14) The peak value of a current waveform is measured. (15) With response seting at "SLOW" , stable measurement is possible at 1 Hz

and above.

(16) The delay time from an input to an waveform output is 0.2 to 0.3 seconds.

(with response setting "FAST" )

(17) The comparator comes equipped with two channels that output HI, IN and

LO.

(18) It is possible to save up to 10 settings in memory for the comparator. (19) When using the comparator, the setting values and instantaneous values

(measurement values) are simultaneously displayed.

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1.2 Features

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1.3 Identification of Controls and Indicators

Display a

Display c

Rectifier

type

Response

speed

Power

switch

Display b

Voltage range Display d

See Section 1.4

Front Panel

Comparator display

Current range

Condition of integration, hold, settings

Current input terminal Voltage input terminal AC inlet (Power supply connector)

RS-232C interface GP-IB interface

Connector for external control and output

Rear Panel

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1.3 Identification of Controls and Indicators

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1.4 Explanation for Keys

Key

AVE・FREQ

PT･CT･SC

COMP.1

TABLE

COMP.2

RESPONSE

▲

RECTIFIER

▼

D/A

INTEG

ENTER

RANGE SEL

To get the lower key indications, press the

Notation

in this manual

AVE・FREQ

PT･CT･SC

Changes the display on the display a. Sets the averaging count and frequency.

Changes the display on the display b. Sets the PT/CT ratio and SC.(scaling)

Changes the display on the display c. Moves the cursor to the left.

Changes the display channel on the display d. Moves the cursor to the right.

COMP1

TABLE

COMP2

RESPONSE

▲

RECTIFIER

Displays Comparator screen. Sets the comparator 1.

Changes the comparator table. Sets the comparator 2.

Switches the response speed (FAST/SLOW /AUTO) . Increases the setting value.

Switches the rectifier type (RMS/MEAN/ MEAN+FILTER)

▼

D/A

INTEG

ENTER

RANGE SEL

Decreases the setting value. Decreases the voltage range.

Sets the D/A output item. Increase the voltage range.

Sets the integration time. Decreases the current range.

Enter the setting value. Increases the current range.

Selects the measurement range.

Operations Section

SHIFT

key first.

3.3

4.4, 4.5

3.3

4.7

3.3

4to6

3.3

4to6

4.11

4.10

4.11

4.10

3.1

4to6

3.2

4to6

3.4

4.6

3.4

4.3

3.4

4to6

3.4

4.12

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1.4 Explanation for Keys

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Key

DATA OUT

START/STOP

RESET

HOLD

PEAK HOLD

HELP

INTERFACE

LOCAL

KEY LOCK

SHIFT

EXIT

Notation

in this manual

DATA OUT

START/STOP

RESET

HOLD

PEAK HOLD

HELP

INTERFACE

LOCAL

KEY LOCK

SHIFT

EXIT

Outputs the measured value on the printer. Sets the printer interval and output item.

Stops or starts the integration operation. Resets the integration value.

Holds the display value. Holds the peak value and maximum value.

Outputs the setting values on the printer. Sets the GP-IB and RS-232C.

Releases the remote state via interface. Sets the key lock state.

Validates the lower indicated function key. (indicator is lit) This key is accepted even in the key lock state.

Exits the setting mode and moves to Measurement screen or Comparator screen.

Operations Section

Key operations during self-test when powering on

SHIFT→RESET SHIFT→ENTER

: system reset is performed after self-test : enter mode for changing the clock frequency of power

calculation circuit after self-test.

8.2, 8.7

4.8

4.3.3

3.5

8.2, 8.7

4.9

8.2

6.5

2to6

4to6

①→②:Press① and then ② in order.

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1.4 Explanation for Keys

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1.5 Display Reference

Indications Meaning

Numbers

m, k, M V, A, W, VA, var, PF, ○,

Ip, Hz, Ah, +Wh, -Wh ±Wh, TIME

RMS, MEAN, FILTER

AUTO, 150 to 600

AUTO, 1,2,5,×10, ×100, mA

SEL Indicator is lit when the range select function is set. HI, IN, LO Indicates the comparator status. Indicator is not lit when the comparator

RUN Indicates integration is in process (when lit), integration is stopped (when

SC AV Indicator is lit excluding when the number of times of averaging are set

Measurement value Indicates the prefix of unit. Indicates the unit and display item.

Voltage, current, active power, apparent power, reactive power, power factor, phase angle, current peak, frequency, integration current, positive integration power, negative integration power, total integration power, integration elapsed time

Indicates the rectifier type (RMS: true rms value, MEAN: average rectifier effectiveness value conversion, MEAN+FILTER: with 500Hz low-pass filter)

Indicates the voltage range (AUTO: auto-ranging on) Indicates the current range (AUTO: auto-ranging on)

function is off.

flashing), and integration is in the reset state (when not lit). Indicator is lit when the PT/CT ratios and SC is other t han 1.

to 1.

HOLD KEY LOCK Indicates key lock status.

SHIFT RMT

OVER o.r

(when Hz display) When displaying Hz, indicates on the left side of display.

, _

----

V, A, W (

Wh, Ah (

S.Err

flashing) Indicates that there was the value which is out of range "o.r" during

Indicates hold state (when lit) or peak hold state (when flashing).

Indicates SHIFT status The unit is in remote control state. Indicator is lit when the interface is in printer mode, or when GP-IB is

communicating and outputting data. Indicates the input's peak value has exceeded the range by 6 times. Indicates the value exceeds the display range. (o.r) = out of range

"_": 100 kHz range, "_": 500 Hz range Indicates the invalid data because of changing frequency.

averaging.

integration. Indicates the PT/CT/SC was set so that the scaling result exceeds

99999M at 130% f.s. input. (scaling error)

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1.5 Display Reference

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Setting indications

Meaning

Average setting (number of times of average) Frequency setting (source, range) D/A output setting (item) Integration time setting

Print out setting (time interval of printing, print item) PT (potential transformer) ratio setting CT (current transformer) ratio setting SC (scaling factor) setting Range selecting Comparator setting (in example, indicates the first table for channel 1) GP-IB (address, control mode) setting RS-232C setting (baud rate, data length, parity, stop bit, control mode) Power computation circuit clock setting

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1.5 Display Reference

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Error indications Meaning

Backup error (press any key to deactivate, needs repair) ROM malfunction (cannot deactivate, needs repair) RAM malfunction (cannot deactivate, needs repair) RAM display malfunction (cannot deactivate, needs repair) Timer circuit malfunction (cannot deactivate, needs repair) A/D,D/A converter malfunction (cannot deactivate, needs repair)

*1(see below) Mix u p of control by key and remote during integration (displayed approx.

1 second) A non-executable key was pressed during integration (RUN indicator

lit/flashing) (displayed approx. 1 second) Integration was started while S.Err was displayed (displayed approx. 1

second) Integration was started when it was±999999M or 10000 hours

(displayed approx. 1 second) Data was reset during integration (displayed approx. 1 second) A invalid key was pressed during HOLD (HOLD indicator lit/flashing)

(displayed approx. 1 second) A invalid key was pressed during display settings (displayed approx. 1

second) All selected range was set to OFF. Key was pressed when the printer mode is not set for the interface

(displayed approx. 1 second) There is no room in the printer output memory (displayed approx. 1

second) The interface cannot be communicated.

Other indications Meaning

In integration time setting, this indicates operation under external control. Data is sent to printer after recovery from power failure. Resets the 3332

*1 If the measured line is active when the 3332 is tuned on, the 3332 may malfunction or Err105 may be displayed. Thus, turn on the 3332 first and check that Err105 is not displayed, and then turn on the measured line.

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1.5 Display Reference

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1.6 Handle and Stand Operations

Removing the handle and stand

Screws

If the handle or feet are not required when the unit is rack-mounted, remove the fixing screws as shown in the figure on the left.

1. Remove the screws fixing on the handle.

Stand

Handle

Right side view

2. Remove the screws on the four feet (two feet with stands)

Screws

CAUTION

Handle

NOTE

Carefully store removed handles, feet, and screws for use in locations other than the rack.

For the maki ng rack mounting fittings, see Chapter 10, "Rack Mounting."

Stand operation

Be sure not to bear down too hard on the top of the unit when it is tilted upwards. Doing so may damage the stand.

The stands move in the direction indicated by the arrow. When raising or closing the stands, move them to where you hear them click into place.

NOTE

When raising the stands, be sure to raise both the left and right stand together.

Stand

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1.6 Handle and Stand Operations

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1.6 Handle and Stand Operations

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Chapter 2

Preparation for Measurement

2.1 Before Measurement

DANGE R

WARNING

Do not exceed the maximum input voltage and current. Doing so can

damage the unit or cause a serious accident.

The maximum rated voltage between input terminals and ground is

600 Vrms. Attempting to measure voltages exceeding 600 Vrms with respect to ground could damage the instrument and result in personal injury.

Always connect the powermeter input to the secondary side of the

breaker. On the secondary side of a breaker, even if the lines are shorted the breaker can trip and prevent an accident. On the primary side, however, the current capacity may be large, and in the event of a short-circuit there may be a serious accident.

To avoid electric shock accidents, do not touch the input terminals

of the unit on live lines, which is exposed.

In order to prevent electric shock and short-circuit accidents, shut

off the power to the line to be measured before connecting the direct connection voltage and current cables to the terminals.

Be sure to connect the voltage input terminals or current input terminals

correctly. Measurement which is attempted with the wiring connected incorrectly may cause damage to the unit or a short-circuit.

If an attempt is made to use an improper supply voltage, there is

danger of damage to this unit and of life-threatening risk to the operator.

Before turning on the power, make sure that the voltage of the power

supply being used matches the supply voltage indicated on the rear panel of the unit.

The unit is constructed so as to be connected to a ground line via a

three-core power cord that is supplied with the unit. To avoid electrical accidents and to maintain the safety specifications of this instrument, connect the power cord provided only to a 3-contact (two-conductor + ground) outlet.

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2.1 Before Measurement

Page 26

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WARNING

CAUTION

When using an external voltage transformer, do not leave the

secondary side short-circuited. If a voltage is applied to the primary while the secondary is short-circuited,a high current will flow through the secondary, which could lead to fire or malfunction.

When using an external current transformer, do not leave the

secondary side open-circuit. If a current flows through the primary while the secondary is open-circuit, this can generate a high voltage on the secondary, which is extremely dangerous.

・ To avoid electric shock, the wiring which is used for making the

connections to the current input terminals should have sufficient current carrying capacity and insulation.

・ This unit is designed for indoor use and can be safely used at

temperatures ranging from 0℃ to 40℃.

・ Do not store or use the unit where it will be exposed to direct sunlight,

high temperatures, high humidity, or condensation. If exposed to such conditions, the unit may be damaged, the insulation may deteriorate, and the unit may no longer satisfy its specifications.

・ This unit is not constructed to be waterproof or dustproof, so do not

use it in a very dusty environment or in one where it will get wet.

・ Do not use the unit near any device which generates strong

electromagnetic radiation or near a static electrical charge, as these may cause errors.

・ To prevent electric shock, do not allow the unit to become wet and do

not use the unit when your hands are wet.

NOTE

･ This unit is designed only for AC measurements. Significant DC components

(such as full-wave rectifier output) cannot be measured.

･ Because the polarity of the voltage and current will affect electrical

measurement, be sure the wiring is connected correctly.

･ If the voltage and current of the device being measured exceeds the

measurement range of this unit, please use an outside-connected PT, or CT. The measurement value can be directly read if the scaling function is used.

･ When using an outside connected trans (PT, CT), the phase differences of

those may cause differences in the electrical measurement. If a precise electrical measurement is necessary, use a PT or CT that has only a small phase difference from the wiring's wave length area that is to be used.

･ Make sure that the wiring of the electric wires are separated from this unit,

so that there is no effect on this unit from an outside magnetic field.

･ If the measured line is active when the 3332 is tuned on, the 3332 may

malfunction or Err105 may be displayed. Thus, turn on the 3332 first and check that Err105 is not displayed, and then turn on the measured line.

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2.1 Before Measurement

Page 27

────────────────────────────────────────────────────

2.2 Simple Use

Check that the line to be measured is shut off, and

測定対象のラインが遮断されていることを確認、およ

check that this unit is powered off and the power

び本器の電源が OFF され電源コードを抜いてあること

Connect the power cord of the 3332 to the outlet.

cord disconnected from the outlet.

Check that there is no short circuit.

Turn the 3332 power on.

を確認する

Make a connections.

Reference

Section 2.3, "Making the Connections"

Section 2.4, "Powering On "

Set the display item.

Set the measurement range.

Set the each items.

Check the connection of line being measured again,

and turn on the power line.

Start the measurement.

Section 3.3, "Selecting the Display "

Section 3.4, "Selecting the Range"

Chapter 3, 4

(Warming-up for more than 30 minutes)

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2.2 Simple Use

Page 28

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2.3 Making the Connections

2.3.1 Direct Connections

DANGE R

Always connect the power meter to the secondary side of a breaker.

On the secondary side of a breaker, even if the lines are shorted the breaker can trip and prevent an accident. On the primary side, however, the current capacity may be large, and in the event of a short-circuit there may be a serious accident.

Shut off the line power supply before connecting the voltage cable and current cable.

If the voltage cables should be detached and touch the two wires, a shorting accident or electric shock may result.

The maximum input voltage and current are 600 VAC, 60 A. Do not measure an input in excess of these limits, as the resulting heat buildup may damage the unit or cause a short-circuit accident.

Once the connections are made, do not touch the input terminals of the voltage and current transformers. There are exposed live parts, and a danger of electric shock or serious accident.

Check that the terminals are tightened securely. If the connections should become detached, there is a danger of a short-circuit or electric shock accident. Additionally, if the connections are not properly tightened, the contact resistance increases, which may lead to the generation of heat, or fire.

WARNING

In order to prevent electric shock and short-circuit accidents, shut

off the power to the line to be measured before connecting the

direct connection voltage and current cables to the terminals.

Be sure to connect the voltage input terminals or current input

terminals correctly. Measurement which is attempted with the wiring connected incorrectly may cause damage to the unit or a shortcircuit.

Do not short circuit between voltage input terminals, when making a

connection. If not, a shorting accident or electric shock may result.

To prevent accidental electrocution or short-circuits, make

connections to the voltage and current input terminals using only insulated wire that is terminated with pressure-fitted terminals. (The voltage and current input terminals have an M6 axial diameter.)

Before switching on power for the line to be measured, check that

the connections and the wiring are not shorting between the voltage input terminals. If there is a short circuit, a electrical shock and or short circuit accident will occur.

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2.3 Making the Connections

Page 29

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CAUTION

Method 1： Connect the voltage input terminals to the load side

SOURCE side

Ａ

To avoid electric shock, the wiring which is used for making the connections to the current input terminals should have sufficient current carrying capacity and insulation.

LOAD side

Ｂ

3332

input terminals

SOURCE side LOAD side

Method 2： Connect the current input terminals to the load side

SOURCE side LOAD side

ＡＢ

3332

input terminals

NOTE

･ Depending on the input level, power meter losses may affect measured

values. Refer to Section 2.3.3 for how to make connections that minimize power meter losses.

･ If the instrument is affected by common mode voltage, connect an ammeter

as shown as B to reduce the error.

SOURCE side LOAD side

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2.3 Making the Connections

Page 30

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2.3.2 When Using PT or CT

DANGE R

WARNING

Once the connections are made, do not touch the input terminals of

the voltage and current transformers. There are exposed live parts,

and a danger of electric shock or serious accident.

Check that the terminals are tightened securely. If the connections

should become detached, there is a danger of a short-circuit or

electric shock accident. Additionally, if the connections are not

properly tightened, the contact resistance increases, which may lead

to the generation of heat, or fire.

When using an external voltage transformer, do not leave the

secondary side short-circuited. If a voltage is applied to the primary

while the secondary is short-circuited, a high current will flow

through the secondary, which could lead to fire or malfunction.

When using an external current transformer, do not leave the

secondary side open-circuit. If a current flows through the primary

while the secondary is open-circuit, this can generate a high voltage

on the secondary, which is extremely dangerous.

Before switching on power for the line to be measured, check that

the connections and the wiring are not shorting between the voltage

input terminals. If there is a short circuit, a electrical shock and or

short circuit accident will occur.

To prevent accidental electrocution or short-circuits, make

connections to the voltage and current input terminals using only

insulated wire that is terminated with pressure-fitted terminals. (The

voltage and current input terminals have an M6 axial diameter.)

CAUTION

NOTE

To avoid electric shock, the wiring which is used for making the connections to the current input terminals should have sufficient current carrying capacity and insulation.

･ By setting the PT ratio and the CT ratio, it is possible to directly read the

first side of the PT and CT. For details, refer to Section 4.7, "Setting the PT and CT Ratios and SC."

･ The secondary side of the PT or CT must be grounded for safely. (Since

most previously attached PT and CT's are already grounded, please check before grounding.)

･ When using an outside connected trans (PT,CT), the phase differences of

･ Depending on the input level, power meter losses may affect measured

values. Refer to Section 2.3.3 for how to make connections that minimize power meter losses.

SOURCE side

3332

input terminals

LOAD side

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2.3 Making the Connections

Page 31

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2.3.3 Notes on Connection Methods

The power meter can be connected either using the method shown below in Fig.1, with the voltage measurement terminal connected on the load side, or as shown in Fig.2, with the current measurement terminal connected on the load side.

As shown in Fig.1, when the voltage measurement terminal is connected on the load side, the power measurement includes a loss due to the inclusion of the voltage measurement input resistance.

Input resistance on the current side

2mΩ

Power

Input resistance on the voltage side

Fig.1 Voltage Measurement Terminal Connected on the Load Side

On the other hand, as shown in Fig 2, when the current measurement terminal is connected on the load side, the power measurement includes a loss due to the inclusion of the current measurement input resistance.

Input resistance on the current side

2MΩ

2mΩ

Load

Power

Input resistance on the voltage side

2MΩ

2mΩ

Input resistance on the current side

Input resistance on the voltage side

Load

2MΩ

Input resistance on the voltage side

Fig.2 Current Measurement Terminal Connected on the Load Side

The method of connection should be shown so as to minimize the loss; which connection is better depends on the relative magnitude of the current and voltage. For example, measuring 600 V, 20 A supply:

Fig.1 loss = (600 [V])2÷ 2[MΩ] = 0.18 [VA] Fig.2 loss = (20 [A])2× 2[mΩ] = 0.8 [VA] In this case, therefore, the connection shown in Fig.1 should be used.

Next consider the case of measuring 600 V, 1 A system: Fig.1 loss = (600 [V])2÷ 2[MΩ] = 0.18 [VA]

Fig.2 loss = (1 [A])2×2[mΩ] = 0.002 [VA] In this case, the connection shown in Fig 2 allows more accurate

measurement.

Load

PowerPower

Input resistance on the current side

2MΩ

2mΩ

Load

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2.3 Making the Connections

Page 32

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2.4 Powering On

WARNING

CAUTION

Before turning on the power, make sure that the voltage of the power

supply being used matches the supply voltage indicated on the AC

power inlet of the unit.

If an attempt is made to use an improper supply voltage, there is

danger of damage to this unit and of life-threatening risk to the

operator.

The unit is constructed so as to be connected to a ground line via a

three-core power cord that is supplied with the unit.

To avoid electrical accidents and to maintain the safety

specifications of this instrument, connect the power cord provided

only to a 3-contact (two-conductor + ground) outlet.

The power switch has a microgap construction, and it is therefore

essential to use it close to a power outlet. When the unit is not in

use, and while making connections to the circuit being tested, isolate

the unit electrically from the power supply, for example by removing

the power cord plug from the outlet.

･ When the power is turned off, do not apply voltage or current to the

voltage input terminals and the current input terminals. Doing so may damage the unit.

･ Should the unit emit smoke, or a strange smell or strange sound,

NOTE

Before measuring, please perform a warm-up at least for 30 minutes after the power is turned on.

1. Make sure that the voltage of the power supply being used matches the supply voltage indicated on the rear panel. (power supply voltage 100 V to 240 V)

2. Confirm the power switch on the front panel is OFF.

3. Connect the power cord supplied to AC inlet on the rear panel.

4. Plug the power cord into a properly grounded (3-pin) outlet that has a safety grounded terminal.

5. Turn the power switch on.

6. All Indicators on the front panel are displayed and the self testing start. Refer to Section 2.5, "Self Test" for details. This test ends about for 10 seconds.

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2.4 Powering On

Page 33

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2.5 Self Test

Indications in self test shifts as follows:

(1) All indicators illuminate (2) Displays

a: Model b: Software version number

(3) Setting conditions of the GP-IB address and RS-232C

NOTE

(4) After self checking, error number is displayed if an unusual matter is

founded.

(5) Returns to normal measurement state.

･ For the error indications, refer to Section 6.3, "Error Indications." ･ Settings at powering on become previous condition. (Backup function)

However, this function does not work when internal lithium battery is used up. In this case, the error is indicated after self-test.

･ The battery would run down after six years. Please contact your nearest

service representative for battery change.

･ Don't press the keys unnecessarily during self testing. ･ If the

SHIFT

key is pressed and then the

RESET

key is pressed during the self-test, the unit will reset the system. (Refer to Section 6.2, "System Resetting.")

･ If the measured line is active when the 3332 is tuned on, the 3332 may

malfunction or Err105 may be displayed. Thus, turn on the 3332 first and check that Err105 is not displayed, and then turn on the measured line.

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2.5 Self Test

Page 34

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2.5 Self Test

Page 35

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Chapter 3

3.1 Changing the Response Setting

To enable stable measurements in the low frequency range, there are two response settings available.

FAST (response time: 0.2 to 0.3 seconds) This allows stable measurement for a constant input of at least 45 Hz, but at frequencies below 45 Hz the measured value fluctuates. When power transients or fluctuations occur, they are followed.

SLOW (response time: 5 to 15 seconds) This allows stable measurement down to 1 Hz, but sudden fluctuations cannot be followed.

Pressing the

RESPONSE

keys changes display as follows.

Basic Operation

NOTE

FAST SLOW AUTO

RESPONSE

With the AUTO selection, the response setting is switched in the following conditions.

1. The FAST response is used when the frequency is 45 Hz or above, and the SLOW response otherwise.

2. SLOW response is automatically selected when the peak current value is detected to be changing periodically.

･ When measuring severe current fluctuations or low current levels in the

AUTO response mode, SLOW may be selected. In this case, select FAST or SLOW manually as required.

･ It is not possible to change the response setting in the display hold or peak

hold mode (with the HOLD indicator lit or flashed, "Err.016" is displayed). Press the HOLD indicator goes off), to make a change possible. However, with the AUTO selection, the measurement is continued switching the response setting, even if in the display hold mode.

HOLD

key or

SHIFT→HOLD

keys to end the hold mode (so that the

RESPONSE

▲

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3.1 Changing the Response Setting

Page 36

────────────────────────────────────────────────────

3.2 Selecting the Rectifier Type

(1) For voltage measurement this unit has three rectifier circuits. Before

measurement, select the following type.

① RMS Measure true RMS value ② MEAN Measure average rectifier effective value converted for

voltage, true RMS value for current

③ MEAN+FILTER Measure average rectifier effective value converted for

voltage with a 500Hz low-pass filter (L.P.F.), true RMS

value for current. (2) The rectifier type selected displays on rectifier display. (3) Pressing the RECTIFIER key changes the rectifier type.

Select suitable rectifier type repeating these operation.

NOTE

RMS MEAN FILT

RECTIFIER

▼

･ Both "average rectifier effective value converted (MEAN)" and "real

effective value (RMS)" indicate correct effective value. Howeve r, only "real effective value" indicates correct value for the input which include distorted wave.

･ When "average rectifier effective value converted with 500Hz low-pass filter

(L.P.F.) (MEAN+FILTER)" is set, a 500Hz filter is applied during measurement. With this filter, inverter carrier elements are eliminated for a closer measurement of the fundamental frequency. However, the power computation circuit uses input waveform as is, so the measurement value does not differ when RMS, MEAN, or MEAN+FILTER is chosen. Moreover, accuracy is not guaranteed for measurement with MEAN+FILTER of high frequency input over 60Hz.

･ During integrating (with RUN lit or flashed), the rectifier type cannot be

changed ("Err.012"). Before changing the rectifier type, press the RESET key to reset the integration (RUN goes off).

･ During holding the displays (with HOLD lit or flashed), the rectifier type

cannot be changed ("Err.016"). Before changing the rectifier type, press the

HOLD key to release the hold state (HOLD goes off).

･ When the rectifier type is changed, read the measurement value after the

condition of internal circuit is stable (for 5 seconds or more).

────────────────────────────────────────────────────

3.2 Selecting the Rectifier Type

Page 37

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3.3 Selecting the Display

NOTE

Press the following keys, the function can be selected on each display.

The voltage, current, and effective power channels display up to 130% of range. Values in excess of that amount will result in display of "o.r.", indicating out of range. The display will show o.r. for the results of calculations made using data that is out of range.

Display

Voltage

Current

Active power

Apparent power

Reactive power

var

Power factor

PF ○ Phase angle Ip Current peak

Function

a V, A, W, VA, var, PF, Hz, TIME

b V, A, W, Ip, Ah, +Wh, ±Wh

c V, A, W, VA, var, PF, ○, Ip, Hz, Ah, +Wh, -Wh, ±Wh, TIME

d V, A, W, VA, var, PF, ○, Ip, Hz, Ah, +Wh, -Wh, ±Wh, TIME

Hz Frequency Ah Integration current +Wh Positive integration power

-Wh Negative integration power ±Wh Total integration power TIME Integration elapsed time

During comparator display, the channel number and table number for the comparator is displayed on the Display c screen for 1 second by pressing the

a,b

,ordkey.

Pressing the display, see Section 4.11)

key returns to the normal display screen. (For comparator

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3.3 Selecting the Display

Page 38

────────────────────────────────────────────────────

The elapsed time is displayed as follows;

NOTE

From 0 minute to 999 hours and 59 minutes

From 1000 to 9999 hours and 59 minutes

1000 hours

For the frequency display, the frequency measurement range is displayed as follows;

500 Hz range 100 kHz range

･ Under setting condition, constants or condition is displayed on the display. ･ If the electrical current phase is leading compared to the voltage phase, the

displays for reactive power, power factor, and phase angle will show a "-" for polarity.

･ If the frequency item or range is changed, "-----" appears until the

measurement is completed.

･ Distortion or noise on the input waveform can cause the displayed frequency

measurement value to be incorrect.

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3.3 Selecting the Display

Page 39

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3.4 Selecting the Range

DANGE R

The maximum input voltage and current are 600 Vrms, 60 Arms. If the display value exceeds 600 V or 60 A, immediately stop measurement, cut the power to the line being measured. If measurement is continued exceeding the maximum input, the unit will be damaged and cause a serious accident.

NOTE

(1) Setting limits

Voltage range: 15/30/60/150/300/600 V Current range: 1/2/5/10/20/50/100/200/500 mA, 1/2/5/10/20/50 A Active power, reactive power and apparent power ranges: combination with voltage and current range. See Section 11.2 Current peak range: six times of current range Active input limit (accuracy assuring limit) : 5% to 120% for range. (5% to 100% only in 600 V range) (for current peak value, 5% to 100% for range or 90 A peak value) Indication limit: 130% for range (for voltage, current, active power), 110 % for range (for current peak) In case of over this limit, the mark shown on the left is displayed (this means out of range).

･ During integration (the RUN indicator is lit or flashing), the range cannot be

changed ("Err.012" is displayed). Before changing the range, press the

RESET key to reset the integration value (the RUN indicator goes off).

･ During holding the displays (the HOLD indicator is lit or flashed) the range

cannot be changed ("Err.016" is displayed). Before changing the range, pressing the HOLD indicator goes off).

･ The range which was already set to OFF is skipped.

(See Section 4.12, "Selecting Range".)

HOLD

key or

SHIFT→HOLD

keys to release the hold state (the

(2) Settings

Voltage range [V]

Range up

INTEG

AUTO 15 30 60 150 300 600

Range down

D/A

Current range [A]

AUTO 1m 2m 5m 10m 20m 50m

100m 200m 500m 1 2 5 10 20 50

When the range select function is set (SEL lamp is lit), ranges that haven't been set are skipped.

────────────────────────────────────────────────────

RANGE SEL

ENTER

3.4 Selecting the Range

Range up

Range down

Page 40

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(3) Auto-ranging function

"AUTO" means auto-ranging function. Shift level for auto-ranging function shows as follows;

① When the measured value exceeds 110% for range: range up ② When "OVER" illuminates: range up ③ When the measured value is under full scale of 30% and under 90% of the

lower range: range down The 3332 can quickly move to the most suitable range through internal

circuitry. Therefore, when the auto-ranging function is on, the 3332 will not necessarily go to the next range automatically. (However, only on the current side). The range which was already set to OFF is skipped. To release the auto-ranging function, press the

U,U

orI,

keys once.

NOTE

･ In auto-ranging function sometimes range goes on up and down according to

distortion of input wave or size of measuring value. In this case, release auto-ranging function and select range manually.

･ The current-measuring range will not automatically shift down unless the

peak measured value is below 90% of the high end of the lower range.

･ When auto-ranging is enabled, depending on the distortion of the input

waveform and the size of the measured values, range switching may be unable to stabilize. In this case, cancel auto-ranging and select the range manually. If a similar type of behavior occurs with a manually selected range, switch to the next higher range.

･ The OVER indicator is lit when peak value of voltage input and current input

waveform are over six times for range. In this case, internal circuit works abnormally. Select the range not to lit the OVER indicator.

･ Even if it is either voltage or current, when massive input that will display

out of range (o.r.) is applied, sometimes other measuring values become abnormal. Be sure to select ranges for voltage and/or current that will not be out of range or lit the OVER indicator.

･ Apparent power shows out of range (o.r) when either voltage or current

shows same display.

･ Reactive power, power factor and phase angle shows out of range (o.r.) when

either active power and apparent power shows same display.

･ Pow e r factor and phase angle shows out of range (o.r.) when apparent power is

･ If the function's crest factor is exceeded (OVER is lit), the indicated data is

not correct.

･ After changing range, wait until the internal circuitry settles (5 seconds)

before reading the measurement value.

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3.4 Selecting the Range

Page 41

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3.5 Holding the Display

Press the HOLD key, the HOLD indicator is lit and preserve all measuring value at that point. (Hold state)

Press the HOLD key again, this indicator goes off, and return normal measuring condition.

3.5.1 Restrictions During the Hold Status

・Shifting of response, range and rectifier type are not allowed. ("Err.016" is

displayed.)

・Even if the auto-ranging is set for voltage, current, or frequency the range

cannot be changed. The range is fixed when the range is held. If the HOLD state is released, auto-ranging function restarts.

・The following settings cannot be changed, which are explained in Chapter 4,

"Settings and Operations". ("Err.017" is displayed.)

Pressing the HOLD key to release the hold state (the HOLD indicator goes off) changes setting.

Item Display

Selecting integrate time

Selecting number of averaging

Selecting frequency measurement source and range

Selecting D/A output items

Setting the PT ratio

Setting the CT ratio

Setting the SC

Selecting range

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3.5 Holding the Display

Page 42

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3.5.2 Current Waveform Peak Hold Function and Maximum Value Measurement

These enable incoming current transients and maximum value of measurement items to be measured.

NOTE

(1) Press the

SHIFT→HOLD

keys to start the peak hold function. While the peak

hold function is activated the HOLD indicator flashes.

(2) Press the SHIFT→HOLD keys again to return to the normal display. (the HOLD

indicator goes off.)

(3) While the peak hold function is activated, pressing the

HOLD

key resets the

peak value to the present instantaneous value. (4) The peak value of the current waveform is shown as Ip. (5) While the peak hold function is activated, for other measurement items the

unit shows the maximum value since the peak hold function was activated.

Pressing the

HOLD

key also resets these maximum values to the present

instantaneous values.

･ The displayed peak value or maximum value is not necessarily measurements

at the same time.

･ For all items, the absolute values are compared. ･ When the averaging function is used, the maximum value is taken from the

averaged values, but the peak value is taken from the original values before

averaging.

･ Pressing the

SHIFT→HOLD

keys while the hold function is active (HOLD

indicator lit) switches to the peak hold function.

･ Power factor or phase angle "o.r" indications are treated as a power factor of

zero or phase angle of zero. (As minimum values) A frequency "o.r"

indication or "-----" indication is treated as a frequency of 0 Hz. (As

minimum value) For other items, an "o.r" indication is treated as a maximum

value.

･ The integration value is update during peak hold.

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3.5 Holding the Display

Page 43

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3.5.3 Restrictions During the Peak Hold Status

・Shifting of response, range and rectifier type are not allowed. ("Err.016" is

displayed.)

・Even if the auto-ranging is set for voltage, current, or frequency the range

cannot be changed. The range is fixed when the range is held. If the HOLD state is released, auto-ranging function restarts.

・The following settings cannot be changed. ("Err.017" is displayed.)

Press the SHIFT→PEAKHOLD key to release the hold state (the HOLD indicator goes off) the settings can be changed.

Item Display

Selecting integrate time

Selecting number of averaging

Selecting frequency measurement source and range

Selecting D/A output items

Setting the PT ratio

Setting the CT ratio

Setting the SC

Selecting range

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3.5 Holding the Display

Page 44

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3.5 Holding the Display

Page 45

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Chapter 4

4.1 Setting Items

Items Key Display Section

Setting the integrate time INTEG 4.3 Selecting the number of averaging AVE･FREQ 4.4

Selecting frequency measurement source and range

Selecting the D/A output items D/A 4.6 Setting the PT (potential transformer) ratio PT･CT･SC 4.7

Setting the CT (current transformer) ratio PT･CT･SC 4.7 Setting the SC (scaling factor) PT･CT･SC 4.7

Settings and Operations

AVE･FREQ 4.5

Setting the COMP1 COMP1 4.10 Setting the COMP2 COMP2 4.10

Selecting range RANGE SEL 4.12 Selecting the printing interval time and

printing items for GP-IB listen only printer or RS-232C printer

Setting the GP-IB address INTERFACE Setting the RS-232C INTERFACE

PRINT 4.8

4.9

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4.1 Setting Items

Page 46

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4.2 Operating Setup Keys

c d RESPONSE RECTIFIER

SET UP

ENTER

"Setup key" means every key ( , , ▲ , ▼,andENTER) shown with blue

letters in the figure above. These keys work as "Setup key" when setting the

display (the SHIFT indicator is lit). While the SHIFT indicator is turned off,

this function does not work. However, those key work as the function

shown with black letters above them.

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4.2 Operating Setup Keys

Page 47

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4.3 Setting the Integration

This sets integration time. When integrating, some limitations arise for this unit. In this section, the settings and the integrating method will be explained.

4.3.1 Flowchart

Measurement display

SHIFT

INTEG

Integration setting display

Sets the integration

INTEG

(or EXIT)

Measurement display

1. Set the integration time.

2. Enter the settings.

4.3.2 Integration Setting Method

(1) Enter the integration setting state.

SHIFT

INTEG

NOTE

1. Press the SHIFT key and the SHIFT indicator is lit.

2. Press the INTEG key.

Hours Minutes Seconds

If there is no flashing indication displayed the settings cannot be changed (during HOLD or RUN indicator lit or flashing). In this case, return to the measurement state by pressing the integration value is reset or hold state is released.

To reset the integration, use the indicator is flashing) and press when the RUN indicator is off).

To release the hold state, press the lit,and press (HOLD state is released when the HOLD indicator is off).

SHIFT→PEAKHOLD

Integration time

INTEGorEXIT

START/STOP

SHIFT→RESET

HOLD

when the HOLD indicator is flashing.

key when the HOLD indicator is

key, and set again after the

key to stop integration (RUN

. (Integration value is reset

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4.3 Setting the Integration

Page 48

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(2) Set the integration.

Changing value

▲

Moving digits

▼

Supplement

Display:

ENTER

1. To select the integration time, press the ▲ or ▼ Setup key to change the

value. Pressing or Setup key moves flashing digit.

2. The setting range of integrate time is 10 seconds to 10,000 hours.

3. Press the

ENTER

key. The flashing will stop and the setting will be decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , , ▲, ▼ Setup keys and the flashing points will reappear.

If the integration time is set to 00000:00:00 or more than 10000 hours, enter

100000:00:00 by the

ENTER

key.

(3) Move to the measurement display.

Press the

INTEGorEXIT

key. The SHIFT indicator will turn off.

Other keys operations in Integration Setting mode

(SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP1 COMP2

D/A

PRINT RANGE SEL INTERFACE

Moves to each setting screen.

4.3.3 Integration Operation

(1) Understanding the integrating state.

Integration execution state: RUN indicator lit. Integration stopped state: RUN indicator flashing Integration reset state: RUN indicator off.

(2) The limitations of this unit due to integration.

During integration execution state (RUN indicator lit) and when in integration stopped state (RUN indicator flashing), voltage range, current range, rectifier type, PT ratio, CT ratio, SC, and range setting cannot be changed. ("Err.012" or "Err.017" is displayed for a second.)

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4.3 Setting the Integration

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(3) Integration operation

・To start the integration after the previous integration value is reset:

Press the

START/STOP

・To add to the previous integration value.

Press the START/STOP key.

・To stop forcibly the operating integration:

Press the START/STOP key. The RUN indicator is flashing and the integration operation will stop.

・To reset the integration value:

Press the SHIFT→RESET key, and the RUN indicator is turned off. The integration value will be reset.

(4) Integration stop (RUN indicator flashing)

・Reaches integrating time. ・Press the START/STOP key while the RUN indicator is lit. (RUN indicator will

be flashing).

・When integrate time reaches 10000 hours. ・When integrate value reaches ±999999 MAh (MWh).

(5) Integration reset

Press the SHIFT→RESET key while the RUN indicator is flashing (RUN indicator will be turned off).

SHIFT→RESET key (RUN indicator off), and then press

key (RUN indicator is lit). The integration will start.

4.3.4 Notes on Integration

(1) When starting integration, auto range setting of voltage and current is

canceled and the range at starting point is fixed. It is necessary to set the range so that it will not be out of range during integrating. If the input of current or active power for channels exceeds 130% of range during integration, the value for the channel is integrated as input of 130%f.s.

The Ah or Wh unit indication flashes to indicate that an out-of-range value has occurred. This continues flashing until the integration value is reset.

Ah or Wh flashes

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(2) The following settings cannot be changed during integration (RUN indicator

lit) or integration stop (RUN indicator flashing), (Err.012 is displayed).

indicator

Items

Response

RUN

Lit Flashing

● ●

Rectifier type Voltage and current range Averaging time

Frequency range and source

PT ratio, CT ratio, and SC D/A output item

Comparator Range select

Integration time Print time and item

Interface settings

●: changeable －: can not change

("Err.012" or "Err.017" is displayed for a second.)

－－

● ●

－－

● ●

－－

－ ●

When integrated by external control, the displays will be as follows and the setting cannot be changed.

To change the setting for the integration value reset, return the measurement display with the

INTEG key and press the SHIFT→RESET key.

(3) While the RUN indicator for integration is lit, resetting is out of order

(Err.015 is displayed). Resetting must be done after stopping integration (interface and external control).

(4) On starting and stopping integration key operating (and :INT EG:STATE

START command of interface) and external control are unable to mix ("Err.011" is displayed).

(5) When using external control, the integrate time which is set according to

Section 4.3.2, "Integration Setting Method" is invalid. After all, integration stops in following cases.

① Stopped by external control signals. ② When the integrate time achieves 10000 hours. ③ When the integrate value achieves ±999999 MAh (MWh).

(6) During displaying "S. Err", integrating cannot start ("Err.013" is displayed).

In this case, change PT/CT ratios, and SC. Refer to Section 4.7, "Setting the PT ratio, CT ratio, and SC".

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(7) When the integrate value achieves ±999999 MAh (MWh) or when the

integrate time achieves 10000 hours, integrating cannot restart. ("Err.014" is displayed). In this case, press the indicator off)

(8) When the GP-IB setting is "Pr." (printer mode), and a GP-IB listen-only

printer is connected, at the same time that integration values start to be sent to the printer, measurement values can be printed at regular intervals. If, however, communications are lost because of any fault, "Err. 023" is displayed. Refer to Section 4.8, "Setting the Printer Output."

(9) When using the RS-232C interface, set the unit to printer mode and connect

RS-232C printer, measuring value are able to print according to every certain interval simultaneously as starting integration. Refer to Section 4.8, "Setting the Printer Output." If, however, communications are lost because of any fault, "Err. 023" is displayed.

(10) When doing system resetting, integrating is stopped and the equipment is

reset to initial condition. For system resetting refer to Section 6.2, "System Resetting."

(11) When the power is cut off during integrating, integration starts again after

returned. If the interface is Pr. (printer) mode, the data, integrate elapsed time, and comment "POWER FAILURE" are printed out.

SHIFT→RESET

keys to reset integrating data. (RUN

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4.3.5 Display Format of Integrating Value

The integration reset format is shown in Table 1 and 2. Digits of integrate value and integrate range format carry up or down simultaneously.

NOTE

The number of digits does not go below that when integration is reset.

Table 1 Constitution of Current Integration Range

Range [A] 1,2,5 mA 10,20,50 mA 100,200,500 mA 1,2,5 A 10,20,50 A

Reset

value [Ah]

0.00000 mAh 00.0000 mAh 000.000 mAh 0.00000 Ah 00.0000 Ah

Table 2 Constitution of Power Integration Range 　　　Unit: Wh

15 V

30 V 00.0000 mWh 00.0000 mWh 000.000 mWh 000.000 mWh 000.000 mWh

60 V 00.0000 mWh 000.000 mWh 000.000 mWh 000.000 mWh 0.00000 Wh

150 V 000.000 mWh 000.000 mWh 000.000 mWh 0.00000 Wh 0.00000 Wh

300 V 000.000 mWh 000.000 mWh 0.00000 Wh 0.00000 Wh 0.00000 Wh

600 V 000.000 mWh 0.00000 Wh 0.00000 Wh 0.00000 Wh 00.0000 Wh

15 V 000.000 mWh 0.00000 Wh 0.00000 Wh 0.00000 Wh 00.0000 Wh

1mA 2mA 5mA 10 mA 20 mA

00.0000 mWh 00.0000 mWh 00.0000 mWh 000.000 mWh 000.000 mWh

50 mA 100 mA 200 mA 500 mA 1A

30 V 0.00000 Wh 0.00000 Wh 0.00000 Wh 00.0000 Wh 00.0000 Wh

60 V 0.00000 Wh 0.00000 Wh 00.0000 Wh 00.0000 Wh 00.0000 Wh

150 V 0.00000 Wh 00.0000 Wh 00.0000 Wh 00.0000 Wh 000.000 Wh

300 V 00.0000 Wh 00.0000 Wh 00.0000 Wh 000.000 Wh 000.000 Wh

600 V 00.0000 Wh 00.0000 Wh 000.000 Wh 000.000 Wh 000.000 Wh

15 V 00.0000 Wh 00.0000 Wh 000.000 Wh 000.000 Wh 000.000 Wh

30 V 00.0000 Wh 000.000 Wh 000.000 Wh 000.000 Wh 0.00000 kWh

60 V 000.000 Wh 000.000 Wh 000.000 Wh 0.00000 kWh 0.00000 kWh

150 V 000.000 Wh 000.000 Wh 0.00000 kWh 0.00000 kWh 0.00000 kWh

300 V 000.000 Wh 0.00000 kWh 0.00000 kWh 0.00000 kWh 00.0000 kWh

600 V 0.00000 kWh 0.00000 kWh 0.00000 kWh 00.0000 kWh 00.0000 kWh

2A 5A 10 A 20A 50A

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4.3 Setting the Integration

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Integration resetting value

Display format of current range and active power range applies to integrate value format under reset condition.

Range Display format

30 W 30.000 W 30.0000 Wh 00.0000 Wh

1.5 kW 1.5000 kW 1.50000 kWh 0.00000 kWh

Integrating value

format

Reset value

Also in scaling display format applies to integrating value format.

Range Display format

150 W×5(CT) 750.00 W 750.000 Wh 000.000 Wh

Integrating value

format

Reset value

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4.4 Setting the Number of Averaging

When dealing with input that changes greatly, an average measurement value is displayed. This unit does measurement averaging by the number of settings.

4.4.1 Flowchart

Measurement display

SHIFT

AVE･FREQ

Average setting display

Sets the averaging

AVE･FREQ

(or EXIT)

Measurement display

4.4.2 Average Setting Method

(1) Enter the average setting state.

SHIFT

AVE･FREQ

NOTE

1. Press the

2. Press the

Flashing

SHIFT

AVE･FREQ

If there is no flashing indication displayed the settings cannot be changed (the HOLD indicator lit or flashing). In this case, return to the measurement state by the

SHIFT→PEAKHOLD

key and the SHIFT indicator is lit.

key.

Average setting Frequency setting

AVE･FREQ

key (the HOLD indicator off). Then set again from step 1.

1. Set the number of times for averaging.

2. Enter the settings.

key and release the HOLD state by the

HOLD

key or

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4.4 Setting the Number of Averaging

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(2) Set the number of times for averaging.

Increasing

▲

ENTER

Decreasing

▼

NOTE

1. Press the ▲ or ▼ key to change the averaging time in the desired column

when the displays on Display c are flashing. The setting range is 1 to 300.

2. Press the

ENTER key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

At this time, if the averaging times are anything but "1", the AV (average) indicator is lit.

To change the settings again, press the ,,▲,or▼ key and flashing indication appears. The range of averaging time is 1 to 300. When the time for averaging is set to 1, the AV indicator will turn off. When it is set to 000, pressing the ENTER key changes the setting to 001. If it is set to more than 300, the setting is made to 300.

(3) Move on to the measurement display.

NOTE

Supplement

Display:

Press the AVE･FREQ or EXIT key and the SHIFT indicator will turn off.

Unit flashes

If the input of voltage, current or active power exceeds 130% of range during averaging, the value is averaged and calculated as input of 130%f.s. At that time, "o.r" is displayed. While an averaged value which includes an out-of-range value is being displayed, the unit indication flashes to indicate this fact.

Other keys operations in Averaging Setting mode (SHIFT indicator is lit):

Key Key operation

PT･CT･SC

COMP1 COMP2

D/A INTEG PRINT

RANGE SEL

INTERFACE

Moves to each setting screen.

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4.4 Setting the Number of Averaging

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4.5 Setting the Frequency

This sets the item to measure the frequency and the frequency range. Any frequency higher than the set range will be filtered out by an internal filter, so a stable frequency measurement can be made.

4.5.1 Flowchart

Measurement display

SHIFT

AVE･FREQ

Frequency setting display

Sets the frequency

AVE･FREQ

(or EXIT)

Measurement display

4.5.2 Frequency Setting Method

(1) Enter the frequency setting state.

SHIFT

AVE･FREQ

1. Press the

SHIFT

2. Press the AVE･FREQ key. The averaging count is flashing.

3. Press the Setup key, and the frequency source is flashing.

key and the SHIFT indicator is lit.

1. Select the frequency source.

2. Select the range.

3. Enter the settings.

Frequency source (V or A flashes)

NOTE

If there is no flashing indication displayed the settings cannot be changed (during HOLD indicator lit or flashing). In this case, return to the measurement state by pressing the state by pressing the

HOLD

key or

AVE･FREQ

SHIFT→PEAKHOLD

key and release the HOLD

keys (the HOLD

indicator off). Then set again from step 1.

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(2) Set the frequency.

Setting frequency source and range

▲

Switching display

▼

ENTER

Supplement

Display:

1. To select the frequency source, press the ▲ or ▼ key while the indication

of V, A on display d is flashing.

2. To select the frequency range, press the

key and the setting display (500

Hz, 100 kHz, or AUTO) on display d flashes. Press the ▲ or ▼ key to set the range.

3. Pressing the or key moves flashing point.

4. Press the

ENTER

key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , , ▲, ▼ Setup keys and the flashing points will reappear.

(3) Move onto the measurement display.

Press the

AVE･FREQorEXIT

key and the SHIFT indicator will turn off.

Other keys operations in Frequency Setting mode (SHIFT indicator is lit):

Key Key operation

PT･CT･SC

COMP1 COMP2

D/A INTEG PRINT

RANGE SEL

INTERFACE

Moves to each setting screen.

NOTE

When the frequency range is set to "AUTO", and if the frequency exceeds 500 Hz, the range is set to 100 kHz, or if the frequency is less than 400 Hz, the range is set to 500 Hz. If the range is not decided, "-----Hz" is displayed.

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4.6 Setting the D/A Output

CAUTION

Select the D/A output item. This function will change one of the measurement items (voltage, current active power, apparent power, reactive power, power factor, phase angle, current peak, frequency, current integration value or power integration value) out of the measured value reached by the calculation expression, into analog waveform.

4.6.1 Flowchart

To avoid damage to this unit, do not shorten the D/A output terminal or input voltage.

Measurement display

SHIFT

D/A

D/A output setting display

Sets the D/A output

D/A

(or EXIT)

Measurement display

4.6.2 D/A Output Setting Method

(1) Enter the D/A output setting state.

SHIFT

D/A

NOTE

1. Press the SHIFT key and the SHIFT indicator is lit.

2. Press the

D/A

key.

If there is no flashing indication displayed the settings cannot be changed. In this case, return to the measurement state by the HOLD state by the

HOLD

key or

from step 1.

1. Select the output item.

2. Enter the settings.

D/A

SHIFT→PEAKHOLD

keys. Then set again

Setting item

key and release the

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(2) Set the D/A output.

1. The measured data output from D/A is displayed as unit symbols on display d. When the indication on display d is flashing, the units can be changed the following way, by using the Setup keys.

▲

▼

ENTER

Supplement

Display:

V A W VA var PF

lp Hz Ah +Wh -Wh ±Wh

○

2. Using the ▲ and ▼ keys switches the items.

3. Press the

ENTER key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , , ▲, ▼ keys and the flashing points will reappear.

(3) Move onto the measurement display.

Press the

D/AorEXIT

key and the

SHIFT

indicator will turn off.

Other keys operations in Averaging Setting mode (SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP1 COMP2

INTEG PRINT

RANGE SEL

INTERFACE

Moves to each setting screen.

For D/A output example, refer to Figure 1 to 6.

Voltage, Current, Apparent power, Current peak

Figure 1 D/A Output of Apparent Power

-5V

-0

-0.5

LEAD LAG

1+0.5

Power factor

Figure 3 D/A Output of Power Factor

100%f.s.

-5V

-100 % f.s.

ctive power, Reactive power

100%f.s.

Figure 2 D/A Output of Reactive Power

-5V

-180° +180° LEAD LAG

0°

Phase angle

Figure 4 D/A Output of Phase Angle

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4.6 Setting the D/A Output

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Lower than 0.4% f.s. becomes out of range. (Approx. 6.5 V) ･ In 500 Hz range, 500 Hz is 100%

2.5V

0%f.s. 50%f.s. 100%fs.

Figure 5 D/A Output of Frequency

･ In 100 kHz range, 100 kHz is 100% ･ During "-----Hz" display, the output

of the previous display is maintained.

Frequency

Figure 6 D/A Output of Integration (Example for active power integration)

(1) When the integrated value equals a multiple of "the measurement range multiplied by the set

integration time", the D/A output of the integration value becomes 5 V. For example, if the measurement range is 300W and the integration time is set to 24 hours, when the integrated

value is 7.2 kWh (300 x 24), 14.4 kWh (300 x 24 x 2), 21.6 kWh (300 x 24 x 3)… its the D/A

output will be 5 V (when it is a multiple of -7.2 kWh, the D/A output will be -5 V).

(2) When integration has started, D/A output begins to change. When integration has stopped,

the last D/A output is maintained. When integration has restarted, D/A output begins to

change again. (3) When the integration value is reset, D/A output returns to 0V. (4) When the integration value exceeds ±5 V, D/A output returns to 0V and then begins to

change again. (5) If the displayed value is held (by the HOLD function) during integration, the D/A output will be

held, too. When the display HOLD is cancelled, D/A output begins to change again according

to integration value.

NOTE

･ Maximum output is 130% (±6.5 V) of range. ･ In the case of plus out of range, about 6.5 V are outputted, for minus out of range, about -6.5 V

are outputted.

･ During holding or averaging, the value displayed is outputted. ･ D/A exchanging rate is about five times/second. There is a filter in the output circuit, and the

response time is about 0.5 seconds.

･ When integrating by external control, the set range multiplied by integrate time will be 5 Vf.s.

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4.7 Setting the PT (Potential Transformer) Ratio, CT (Current Transformer) Ratio, and SC (Scaling Factor)

When the secondary side of the PT is connected, by setting the PT ratio, it is possible to directly read the primary side of the PT. When the secondary side of the CT is connected, by setting the CT ratio, it is possible to directly read the primary side of the CT. By setting the SC, power values can be multiplied by a coefficient.

4.7.1 Flowchart

Measurement display

SHIFT

PT･CT･SC

PT setting display

Sets the PT, CT, SC

PT･CT･SC

(or EXIT)

Measurement display

4.7.2 PT/CT Ratio and SC Setting

(1) Enter the PT/CT ratio and SC setting state.

SHIFT

1. Press the

PT･CT･SC

PT ratio flashes

2. Press thePT･CT･SCkey.

SHIFT

key and the

SHIFT

1. Select the PT ratio, CT ratio, SC.

2. Enter the settings.

indicator is lit.

CT ratio

NOTE

If there is no flashing indication displayed the settings cannot be changed (during

HOLDorRUN

lit or flashing). In this case, return to the measurement state by pressing thePT･CT･SCkey, and set again after the integration value is reset or hold state is released. To reset the integration, use the indicator is flashing) and press when the

RUN

indicator is turned off).

START/STOP

SHIFT→RESET

To release the hold state, press the lit,and press

SHIFT→PEAKHOLD

key to stop integration (

. (Integration value is reset

HOLD

key when the

HOLD

indicator is

when the HOLD indicator is flashing.

RUN

(HOLD state is released when the HOLD indicator is turned off).

(2) Set the PT/CT ratio and SC.

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4.7 Setting the PT (Potential Transformer) Ratio, CT (Current Transformer) Ratio, and SC (Scaling Factor)

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Moving digits

▲

Moving decimal point

▼

ENTER

1. Using the ▲ or ▼ Setup key, set the PT ratio on display a, CT ratio on

display b, and SC on display c, when the value is flashing.

① To set the PT ratio, raise or lower the flashing value indicated in display

a by using the ▲ or ▼ keys.

② To set the CT ratio, raise or lower the flashing value indicated in display

b by using the ▲ or ▼ keys.

③ To set the SC, raise or lower the flashing value indicated in display c by

using the ▲ or ▼ keys.

2. To move the flashing digit, press the

or key.

To move the flashing decimal point, use the ▲ or ▼ key,

3. Press the ENTER key, and the flashing will stop and the setting will be decided.

Unless this operation is done, the internal setting cannot be changed.

At this time, if the PT ratio, CT ratio, or SC is other than 1, the SC (scaling) indicator is lit. If the settings need to be changed again, press either the , , ▲, ▼ keys and the flashing points will reappear.

NOTE

Supplement

Display:

(3) Move onto the measurement display.

Press the PT･CT･SC or EXIT key. ･ Setting limits of PT/CT/SC are 0.001 to 9999. ･ If the value is set to 0, such as "0.000", it is forcibly set to 1.000 when

pressing the

ENTER

key.

･ If the value exceeds 99999M at 130%f.s. input, the indication shown on the

left will be displayed. (Means scaling error) ･ When the active and apparent power become scaling error, the reactive

power, power factor, phase angle and power integration value are also

scaling error. However, when becomes out of range, "o.r" is displayed.

When scaling error occurs, D/A output still follows the input signal.

Other keys operations in PT/CT/SC Setting mode

(SHIFT indicator is lit):

Key Key operation

AVE･FREQ

COMP1 COMP2

D/A INTEG PRINT

RANGE SEL INTERFACE

Moves to each setting screen.

Depending on the combination of PT, CT and SC ratios, the displayed resolution may become very low, or fixed at 0.0000 m. (Example: Display of power when 15 V, 1 mA range, PT, CT, SC are 0.001) However, D/A output still follows the input signal.

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4.7 Setting the PT (Potential Transformer) Ratio, CT (Current Transformer) Ratio, and SC (Scaling Factor)

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4.8 Setting the Printer Output

When the interface setting is "Pr." mode, it is possible to print data using a standard printer connected through the GP-IB or RS-232C interface. This section describes how to set the printing interval and the items to be printed.

4.8.1 Flowchart

Measurement display

SHIFT PRINT

Printer setting display

Sets for the printer

(or EXIT)

Measurement display

4.8.2 Printer Output Setting Method

(1) Enter the printer setting state.

SHIFT

NOTE

1. Press the

2. Press the

SHIFT

If there is no flashing indication displayed the settings cannot be changed (RUN indicator lit). In this case, return to the measurement state by pressing the press

START/STOP

indicator flashing)

key and the SHIFT indicator is lit.

key.

Print interval Hours Minutes Seconds (10 second step)

key to stop integration. Then set again from step 1. (RUN

1. Select the print interval and items

2. Enter the settings.

Print item

key and

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(2) Set the print interval and print item.

Moving digit

1. To move the flashing point, press the

or Setup key.

2. To set the value on the flashing digit, press the ▲ or ▼ Setup key.

Setting the value

▲

▼

NOTE

･ The smallest unit of setting limit is 10 seconds and biggest is 100 hours. If

the setting exceeds this limit, it is forcibly set to 100 by pressing the ENTER key.

･ When this setting is used, data is printed by the printer at the same time as

the start of integration.

･ When it is 000.00.0, the unit will not print at the same time as integration. ･ If the number of printed items is large, printing may not be possible within

the specified printing interval. In this case, make the printing interval longer, or reduce the number of items.

3. If in the seconds column and the key is pressed, or in the left hand column of the hour columns and key is pressed, the display will change to the setting of the print item.

Flashing

Pressing the key moves flashing point according to the following cycle. Pressing the key moves reversely.

000.00.0 → Time V → Voltage A → Current

W → Active power VA → Apparent power var → Reactive power PF → Power factor

○

→ Phase angle

lp → Current peak

Hz → Frequency Ah → Current integration

+Wh → Positive power integration

-Wh → Negative power integration ±Wh → Total power integration TIME → Integration time

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Selecting item

Setting on or off

▲

▼

ENTER

NOTE

Supplement

Display:

4. Select the item to be printed by using the or key. At this time, unit symbol and channel on display b and d are flashing to indicates the item. "on" shown on display d means that the item is printed. "oFF" shown on display d means that the item is not printed.

5. By pressing the ▲ or ▼ key, on or off setting can be changed. Repeat this procedure and select "ON" or "OFF" for every items.

6. Press the

ENTER key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , , ▲, ▼ keys and the flashing points will reappear.

･ If all items are set to OFF, the displaying fourth item is printed.

(3) Moves onto the measurement display.

Press the

PRINTorEXIT

key. The SHIFT indicator is turned off.

Other keys operations in Printer Setting mode (SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP1 COMP2

D/A

Moves to each setting screen.

INTEG

RANGE SEL

INTERFACE

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4.8.3 Connecting to the Printer

(1) Printer for the GP-IB

1. Set the printer to listen only.

2. Connect the 3332 to the printer by using the GP-IB cable.

(2) Printer for the RS-232C

1. Match the settings of the printer and the 3332. (Baud rate, data length, stopbit, and parity)

2. For details on the setting method of the 3332, refer to Section 4.9, "Setting the Interface."

3. Connect the 3332 to the printer by using the RS-232C cable.

NOTE

･ Depending on the printer, either the pin 2 or the pin 3 is the receiver pin.

If the pin 2 is the receiver pin, use a straight cable. If the pin 3 is the receiver pin, use a cross cable.

For the cross cable, use the type indicated in Section 8.1.2, "RS-232C Interface", example for RS-232C cable connections.

･ For interface cables, use screws to secure the cable. Also, always use

shielded cables for the cable to be used.

NOTE

(3) Setting the 3332

Set to Pr. mode on the 3332. (Refer to Section 4.9, "Setting the Interface".)

(4) Printing sample

Refer to Section 8.7, "Printer Output Function."

The printer must print either 40 characters per line, or 80 or more characters per line.

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4.9 Setting the Interface

Sets the communication condition for GP-IB interface or RS-232C interface.

4.9.1 Flowchart

Measurement display

SHIFT

INTERFACE

Interface display

Sets for the interface

INTERFACE

(or EXIT)

Measurement display

GP-IB interface:

Set the address.

RS-232C interface:

Select for the baud rate, data length, parity, stop bit, and communication mode.

Enter the settings.

4.9.2 Interface Setting

(1) Enter the interface setting state.

SHIFT

1. Press the

INTERFACE

2. Press the

･ GP-IB interface setting

GP-IB interface

･ RS-232C interface setting

RS-232C interface

SHIFT

INTERFACE

key and the SHIFT indicator is lit.

key.

Address

Baud rate Data length Stop bit

Parity check Communication mode

NOTE

If there is no flashing indication displayed the settings cannot be changed (RUN indicator lit). In this case, return to the measurement state by pressing the and press

START/STOP

key to stop integration. Then set again from step 1.

INTERFACE

key

(RUN indicator flashing)

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4.9 Setting the Interface

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(2) Select the interface

During flashing on display a, press the ▲ or ▼ key to select.

The display for GP-IB, the address setting is displayed on display c. The display for RS-232C, the settings of data length, parity, stop bit, and communication mode on display d.

(3) Set the interface.

① GP-IB INTERFACE

Moving on display c

etting value

▲

oving to setting item

Setting items

▲

▼

ENTER

▼

ENTER

1. During flashing on display a, move the flashing to display c (address or Pr mode) by using the

or key.

2. Change the settings with the ▲ or ▼ key. The address can be set between 0 and 30. The previous display of "0" or the next display of "30" is Pr. (printer mode).

3. Press the

ENTER

key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , ▲, ▼ keys and the flashing points will reappear.

② RS-232C INTERFACE

1. Using the or key, move the flashing point to the setting item.

2. Select the flashing baud rate (1200, 2400, 4800, or 9600 bps) on display c with the ▲ or ▼ key.

3. Select the flashing data length (7 or 8 bit) on display d with the ▲ or ▼ key.

4. Select the flashing parity (n :none/ o: odd/ E:even) on the 2nd character from the left end) on display c with the ▲ or ▼ key.

5. Select the flashing stop bit (1 or 2 bit on the 3rd character from the left end) on display d with the ▲ or ▼ key.

6. Using the ▲ or ▼ key, select the flashing communication mode (Pr.: print

mode/ Co.:control mode (character on the right)) on display d.

7. Press the

ENTER

key, and the flashing will stop and the setting will be

decided.

Unless this operation is done, the internal setting cannot be changed.

If the settings need to be changed again, press either the , , ▲, ▼ keys and the flashing points will reappear.

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4.9 Setting the Interface

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(4) Move to the measurement display.

NOTE

Supplement

Display:

Press the

INTERFACE or EXIT key. (SHIFT indicator off)

Printer mode (Pr.) and Control mode (Co.)

･ When in Pr mode (PRINT indicator is lit), data such as interval print and

manual print are output to the printer.

･ When in Co. mode, only control by the controller is possible through the

interface.

Other keys operations in GP-IB and RS-232C setting mode (SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP1 COMP2

D/A INTEG PRINT

RANGE SEL

Moves to each setting screen.

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4.9 Setting the Interface

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4.10 Setting the Comparator

Decides which level the measurement target is on for a given measurement range. Turns the comparator function ON/OFF and sets the comparator item and limit value (table data).

4.10.1 Flowchart

Measurement display

SHIFT

COMP1

Comparator setting display

Sets the comparator

COMP1

(or EXIT)

Measurement display

4.10.2 Comparator Setting Method

(1) Enter the comparator setting state.

SHIFT

COMP1

1. Press the

2. Press the

SHIFT

COMP1

key and the SHIFT indicator is lit.

key (for channel 2,

Limit values

For channel 2, press COMP2.

1. Set the table number.

2. Set the comparator item.

3. Set the limit value.

4. Enter the settings.

5. Change the other table.

COMP2

Comparator on/off setting

Comparator item

Comparator channel

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4.10 Setting the Comparator

Comparator table

Measurement value

Page 71

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(2) Set the comparator.

Changing value

▲

Moving digits

▼

ENTER

1. Press the or Setup key to move flashing digit.

2. Use the ▲ or ▼ key to make the following settings.

・Select the table number when the table number on the display c is flashing. ・Enable or disable the comparator function when the ON/OFF indication on

display d is flashing.

・Set the comparator item when the item (such as V, A, W) on the display d is

flashing.

・Set the limit value when the value on the display a or b is flashing.

(The position of decimal point can be changed when the point is flashing.)

・Set the unit of the limit value when the unit is flashing.

(When "m" and "k" are simultaneously flashing, unit is not set)

3. Press the ENTER key. The flashing will stop and the setting will be decided.

Unless this operation is done, the internal setting cannot be changed.

In addition, when the one of the settings for comparator table (0 to 9) is on, comparation begins immediately after

ENTER

is pressed. The comparator table number comparates at the currently displayed table number. Depending on the results of that comparation, either the HI, IN, or LO lamps is lit. If the settings need to be changed again, press either the , , ▲, ▼ Setup keys and the flashing points will reappear.

Supplement

Display:

(3) Move to the measurement display.

Press the

COMP1orEXIT

key.(For channel 2,

COMP2

)

・When the comparator is on, comparation begins immediately after the

ENTER

key is pressed. The comparator table number comparates at the

currently displayed table number.

・Settings are only on the plus side. ・Integrated values are set to five digits. ・Adjusting items or forcibly correcting ranges is not done.

Example: Even if the value is 1.1000 when in PF (not within the range 0-

1.0000), this is the value defined by the comparator.

・It makes no difference if the larger of the two values is set in display a or b.

The two values are compared, and the larger one is made the HI standard value; the smaller one is made the LO standard value.

Other keys operations in Comparator Setting mode (SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP2

D/A INTEG PRINT

RANGE SEL

INTERFACE

Moves to each setting screen.

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4.10 Setting the Comparator

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4.10.3 Comparator Operation

When the comparator function is turned on, the following operation takes place. It makes no difference if the larger of the two values is set in display a or b. The two values are compared, and the larger one is made the HI limit value; the smaller one is made the LO limit value.

(1) Operation when the two limit values are set with different values

1. When the measurement value is larger than the HI limit value, the HI lamp lights and the HI relay turns on.

2. When the measurement value is smaller than the LO limit value, the LO lamp lights and the LO relay turns on.

3. When the measurement value is above the LO limit value and below the HI standard value, the IN lamp lights and the IN relay turns on.

4. When the measurement value is same as limit value, the IN lamp lights.

(2) Operation when the two limit values are set with the same value

1. When the measurement value is above the limit value, the HI lamp lights and the HI relay turns on.

2. When the measurement value is smaller than the limit value, the LO lamp lights and the LO relay turns on.

3. When the measurement value is same as limit value, the LO lamp lights.

(3) The comparator during averaging operation

Carries out comparator decisions using averaged data.

(4) When "o.r" or "S.Err" is displayed, the HI lamp is lit and the HI relay turns

on.

(5) In the "-----" case, the state is saved. (6) Absolute values are used to make comparator decisions of minus

measurement values.

(7) When the external control signal COMPHOLD1 (COMPHOLD2 when on

ch2) is 0V, relay output is put on hold. In this case, the comparator does not operate (See chapter 7, External Control Terminal and Output Terminal).

(8) Until the measurement value has been recognized by auto-ranging, the

previous state is saved.

(9) The comparator operates using displayed values, so when HOLD is active,

the state is held.

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4.10 Setting the Comparator

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4.11 Displaying Comparator

It is possible to check instantaneous values of comparator items while displaying limit values of comparator items. Moreover, instantaneous values of other measurement items can also be displayed singly. From the comparator display screen, it is also easy to change the comparator table number. Refer to Section 4.10, "Setting the Comparator" for information about the comparator setting method.

4.11.1 Flowchart

Measurement display

Comparator display

1. Press the TABLE key and

Sets the comparator

display

select the table number.

2. Select the test item to be displayed o display c.

Press the

Measurement display

measurement mode.

4.11.2 Comparator Display Setting Method

(1) Enter the comparator display.

1. Press the

key.

Limit values are shown in displays a and b; channel number and table number are shown in display c; and the instantaneous value of the comparator item is shown in display d.

Limit values

key to return the

Comparator on/off setting

Comparator channel

NOTE

･ If the

Comparator table

key and the

TABLE

key are pressed when all tables for Comparator

Comparator item

Measurement value

CH1 and CH2 set to OFF, "OFF" is displayed in display "d" for about 1 second, and then the previous display returns.

･ The table number displays the number of the set table. ･ To distinguish the instantaneous value from the limit values in display a and

b, units such as V and A are not lit. Also, the COMP lamp is lit.

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(2) Key operation

Key operations on the comparator display screen are as follow: Pressing the

CHorTABLE

key in normal mode moves to Comparator display screen. When the

COMP CH1 CH2 Normal display

key is pressed:

When the TABLE key is pressed:

0123456789OFF

Pressing theckey changes to the desired measurement item on Display c. Pressing the

CHorTABLE

key displays comparator channel and table number.

NOTE

CH1-1 V A W VA var PF

lp Hz Ah +Wh -Wh ±Wh TIME

○

Pressing thea,b,ordkey displays comparator channel and table number for one second, when the any measurement item is selected on Display c.

･ If the

key and the

TABLE

key are pressed when all tables for Comparator Ch1 and Ch2 set to OFF, "OFF" is displayed in display "d" for about 1 second, and then the previous display returns.

･ Tables set to OFF in comparator table settings are skipped when switching

table numbers with the

01OFF

TABLE

key.

･ When the comparator is ON, comparator decisions are carried out according

to new table data immediately after switching table numbers with the

TABLE

key.

･ When the comparator item display "c" is displaying other items, comparator

information can be displayed by pressing the

key and the

TABLE

key. In addition, when theaorbkey is pressed, comparator information is displayed in display "c" for about 1 second, and then display of the measurement item returns.

･ When the comparator is turned ON and normal display is set, information

for the currently set comparator item is displayed when the

key or

TABLE

key is pressed. (The table is not switched; only the display is switched.) Pressing the

TABLE

key again changes the table.

Limit value

Measurement value

Comparator item

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4.11 Displaying Comparator

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When the operating table is turned Off in the Comparator Settings, the display shows Off when returning to the Comparator display.

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4.11 Displaying Comparator

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4.12 Selecting Range

Ranges are often used in the 3332, so it comes equipped with a function to designate a required range in order to quickly move to that range; to move to a range with the to skip unnecessary ranges and quickly move to a required range.

4.12.1 Flowchart

U,U

Measurement display

SHIFT

RANGE SEL

Range selecting display

,I,

keys; and with the auto-ranging function,

Sets the range.

RANGE SEL

(or EXIT)

Measurement display

4.12.2 Range Setting Method

(1) Enter the range setting state.

SHIFT

RANGE SEL

1. Press the

SHIFT

2. Press the RANGE SEL key. Display a: Voltage range Display b: Current range

Display c: Setting Display d: Setting

key and the SHIFT lamp is lit.

Voltage range

1. Set the range.

2. Enter the setting.

Current range

On/Off setting

NOTE

If there is no flashing indication displayed the settings cannot be changed (during HOLD or RUN lit or flashing). In this case, return to the measurement state by pressing the

RANGE SEL

key, and set again after the integration value is reset or hold state is released. To reset the integration, use the indicator is flashing) and press

START/STOP

SHIFT→RESET

key to stop integration (RUN

. (Integration value is reset

when the RUN indicator is turned off). To release the hold state, press the lit,and press

SHIFT→PEAKHOLD

HOLD

when the HOLD indicator is flashing.

key when the HOLD indicator is

(HOLD state is released when the HOLD indicator is turned off).

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4.12 Selecting Range

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(2) Set the range.

Changing value

▲

Moving digits

▼

ENTER

1. Press the or key to select the range.

2. Set ON/OFF by pressing the ▲▼ keys in the selected range.

When OFF is selected, move to a range by pressing the

U,U

I,I

, keys, or use the auto-range setting to skip that range when moving to another range.

3. Press the ENTER key. The flashing will stop and the setting will be decided.

Unless this operation is done, the internal setting cannot be changed.

When any set range within a range is turned off, the SEL lamp is lit. On the other hand, when all ranges are set ON, the SEL lamp is not lit.

If the settings need to be changed again, press either the , , ▲, ▼ Setup keys and the flashing points will reappear. When the system resets, all ranges return to the ON state (no ranges are skipped). When the voltage range or current range is set to all OFF, "Err.018" is displayed and it is not entered.

(3) Move to the measurement display.

Supplement

NOTE

Press the

RANGE SELorEXIT

key.

Other keys operations in Range select mode (SHIFT indicator is lit):

Key Key operation

AVE･FREQ PT･CT･SC

COMP1 COMP2

D/A INTEG PRINT

INTERFACE

Moves to each setting screen.

Auto-ranging is disabled if only one range is selected.

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4.12 Selecting Range

Page 78

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4.12 Selecting Range

Page 79

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Chapter 5

Setting and Measurement

Example

5.1 Electrical Power Integration and Printer Output Examples

Will integrate electrical power of 200 V, 10 A max. for 1 hour. Every ten minutes, the integration time and +Wh will be printed.

Reset the integration value.

Set the voltage range to 300 V.

Set the current range to 10 A.

Set the integration time to 1 hour.

Set the printer interval time to 10 minutes.

Set the printer item to TIME and +Wh.

Set the interface.

Start the integration.

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5.1 Electrical Power Integration and Printer Output Examples

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(1) Reset the integration value. (The RUN and HOLD indicators should be turned

off.)

RUN HOLD

START/STOP

SHIFT

HOLD

RANGE

RESET

1. When the RUN indicator is lit, press the

START/STOP key to stop

integration. The RUN indicator is flashing.

2. Press the SHIFT→RESET keys to reset the integration value. The RUN

indicator is turned off

3. Press the

HOLD

key to turn off the HOLD indicator when the HOLD indicator

is lit.

4. When the HOLD indicator is flashing, press the SHIFT→RESET keys to turn off the HOLD indicator.

(2) Set the voltage range to 300 V.

Using the

15 30 60 150 300 600 SEL AUTO OVER

key, move the flashing to 300 (300 V).

(3) Set the current range to 10 A.

Using the

key, move the flashing to 10 (10 A).

SHIFT

INTEG

1 2 5 ×10 ×100 mA SEL AUTO OVER

(4) Set the integration time to 1 hour.

1. Press the SHIFT key to lit the SHIFT indicator.

2. Press the

INTEG

key to display settings of integration time. The value in the

left end of the display b is flashing.

Integration time

Hours Minutes Seconds

3. Press the ▼ key once to set to "0."

4. Press the key 4 times and the 5th column (a digit for hour) is flashing. (Pressing the key moves the flashing point in the reverse way.)

5. Press the ▲ key once to set to "1."

ENTER

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5.1 Electrical Power Integration and Printer Output Examples

6. Press

ENTER

key to enter "00001.00.00" (no flashing).

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SHIFT

Selecting item

Setting on or off

▲

ON: +Wh

▼

TIME

ENTER

(5) Set the print interval time to 10 minutes.

1. Press the returned to the measurement display, press SHIFT→ PRINT.

2. Press the key 3 times, and the flashing moves to the column of 10 minutes. (Pressing the key moves the flashing point in the reverse way.)

3. Press the ▲ key once to set to "1".

(6) Set the print item of the printer to TIME and +Wh.

1. Press the key 3 times, and "V" is flashing.

2. Press the ▲ or ▼ key to set to "OFF".

3. Press the key to change the item, and then set to ON or OFF by using the

▲ or ▼ key. Set to ON for +Wh and TIME only. (Pressing the key moves the item in the reverse way.)

4. Press the item (+Wh, TIME) will be decided.

PRINT key during displaying integration setting (If the display is

Print interval Hours Minutes Seconds (10 second step)

Print item

ENTER

key, the setting of print interval (10 minutes) and print

(7) Set the interface.

Press the INTERFACE key during printer setting display. (If the display is returned to the measurement display, press the SHIFT key and then press the When flashing on display a, set GP-IB and RS-232C by using the ▲ or ▼ key.

Using the GP-IB interface

INTERFACE

key.）

1. Using the or key, move the flashing to address.

2. Press the ▲ or ▼ key to set to "Pr".

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5.1 Electrical Power Integration and Printer Output Examples

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Using the RS-232C interface

Setting example: baud rate: 9600, data length: 8, parity: no, stop bit: 1

1. Using the

key, move the flashing point to display c.

2. Set the baud rate to "9600" on display c, using the ▲ or ▼ key.

3. Using the key, move the flashing point to display d.

4. Set the data length to "8" on display d, using the ▲ or ▼ key.

5. Press the key once to move the flashing point to the right.

6. Set the parity to "n", using the ▲ or ▼ key.

7. Press the key once to move the flashing point to the right.

8. Set the stopbit to "1", using the ▲ or ▼ key.

9. Press the key once to move the flashing point to the right.

10. Set the parity to "Pr", using the ▲ or ▼ key.

11. Press the

ENTER

key and the setting will be decided.

(8) Integration start

1. Press the

INTERFACEorEXIT

key to return the measurement display.

2. Press the START/STOP key.

3. The

RUN

indicator is lit and the integration starts. "INTEGRATOR START" is printed on the printer. Integration will print the measurement value every ten minutes, and will stop 1 hour later. (

RUN

indicator will flash, and

"INTEGRATOR STOP" will be printed by the printer)

INTEGRATOR START 00000:00:00

INTEGRATOR TOTAL TIME 00000:00:00

0.0000kWh(+)

INTERVAL TIME 00000:00:00

0.0000kWh(+)

00000:10:00 INTEGRATOR TOTAL TIME 00000:10:00

0.6691kWh(+)

INTERVAL TIME 00000:10:00

0.6691kWh(+) . . . 00001:00:00 INTEGRATOR TOTAL TIME 00001:00:00

4.0157kWh(+) INTERVAL TIME 00000:10:00

0.6694kWh(+) INTEGRATOR STOP

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5.1 Electrical Power Integration and Printer Output Examples

Start integration

Integration value from the integration start. Integration value from the previous to this time print output.

Stop integration

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・ To continue integration

① When resetting the data and restarting. press the

then press the START/STOP key.

② When adding data and integrating, press

・ To stop operating

Press the START/STOP key once. The "INTEGRATOR STOP" will be printed out.

RUN

indicator will flash and

SHIFT→RESET

START/STOP

key once.

key and

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5.1 Electrical Power Integration and Printer Output Examples

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5.2 PT and CT Setting

(Examples of Changing the Digits and Moving the Decimal Point)

Explains when using the following PT and CT: PT: primary side 6,600 V secondary 110 V (PT ratio 6,600÷110=60) CT: primary side 2,000 A secondary 5 A (CT ratio 2,000÷5=400)

Reset the integration value.

Release the hold state.

Set the PT ratio to 60.

Set the CT ratio to 400.

SHIFT

START/STOP

RESET

HOLD

PEAKHOLD

PT･CT･SC

Enter the measurement display.

(1) Resets the integration value.

1. When the

RUN

indicator is lit, press the START/STOP key to stop

integration.

2. When the integration value (the

RUN

indicator is flashing, press the SHIFT→RESET key to reset the

RUN

indicator is turned off).

(2) Release the hold state.

1. When the

2. When the

HOLD

indicator is lit, press the HOLD key to turn off.

HOLD

indicator is flashing, press the SHIFT→PEAKHOLD keys to

turn off.

(3) Set the PT ratio to 60.

1. Press the

SHIFT

key and the

SHIFT

indicator is lit.

2. Press the PT･CT･SC key to make a setting condition. Displays in this case become as follows;

PT ratio flashes

CT ratio

When PT ratio except 1 is already set that value is displayed. If the most significant digit is not flashing, the holding display state or integration data is not reset. At this time press the

PT･CT･SC

key and return

to normal condition, and then repeat from step 1.

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5.2 PT and CT Setting (Examples of Changing the Digits and Moving the Decimal Point)

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3. Set the PT ratio. To change the numerical value

Press the ▲ or ▼ key 5 times to set to "6". To change the flashing to decimal point

Press the

key 4 times.

To move the decimal point Press the ▲ key once or press the ▼ key 3 times to set to "60.00".

(4) Set the CT ratio to 400.

1. Press the key once, the flashing point moves to the top of the CT ratio.

2. Set the CT ratio. To change the numerical value

Press the ▲ key 3 times to set to "4".

NOTE

To change the flashing to decimal point Press the key 4 times.

To move the decimal point Press the ▼ or ▲ key twice to set to "400.0".

3. Press the

ENTER

key to decide the settings ("SC" indicator lit)

If you switch to a different setting display or return to the normal measurement state while this is flashing, the PT and CT ratios remain at their previous settings.

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5.2 PT and CT Setting (Examples of Changing the Digits and Moving the Decimal Point)

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(5) Move onto the measurement display.

1. Press the

indicator (scaling) is lit.

PT･CT･SCorEXIT

key, and the

SHIFT

indicator will turn off. The

2. The range setting corresponds to the secondary side of the voltage and current transformers. For example, with the 150 V, 5 A ranges, the ranges (resolution) of the scaled voltage, current, active power, and other values is as follows.

Voltage 9.0000 kV 150 V×60 Current 2.0000 kA 5A×400 Active power 18.000 MW (150 V×5A×60×400) Apparent power 18.000 MVA (150 V×5A×60×400) Reactive power 18.000 Mvar (150 V×5A×60×400) Current integration 0.00000 kAh (On starting integration) Power integration 0.0000 MWh (On starting integration)

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5.2 PT and CT Setting (Examples of Changing the Digits and Moving the Decimal Point)

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Chapter 6

6.1 When Power Fails

(1) If a power failure occurs during integration, the integration restart

(continues) after the power is restored.

(2) When the GP-IB or RS-232C interface is in "Pr." mode, and if the power

failed while integration was in progress, the measurement data at the time of power failure is printed, together with the integration elapsed time and a message "POWER FAILURE."

(3) During the above power failure processing, the display appears as follows.

Other Functions

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6.1 When Power Fails

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6.2 System Resetting

To carry out a system reset, power on the unit, and hold down the SHIFT →

RESET

This returns all of the settings to their initial values. (These are the same as the settings when the unit is initially shipped from the factory.) The integration elapsed time and integration value are also reset.

keys during the self test.

Items Settings

Display a Voltage Display b Current Display c Active power Display d Power factor

Response Auto

Voltage range/ Current range Auto- range

Rectifier type RMS

Frequency range Auto-range

Frequency measurement source Voltage

Integrate time 10000:00 (10,000 hours)

PT/ CT/ SC 1.000

D/A output items Apparent power

The number of averaging 001 (No averaging)

Comparator OFF both channels 1 and 2 Comparator upper limit 0.0000k (all tables) Comparator lower limit 0.0000k (all tables) Comparator item (CH1) Active power (P) Comparator item (CH2) Current (I)

Communication interface GP-IB

Range setting All ON

GP-IB address 1

Baud rate 9600 bps

RS-232C

Data length Parity bits Stop bits Communication

mode

8bits none 1bit

Co.

Hold OFF (continuous display)

Printing items V, A, W, +Wh, TIME

Print interval time 00:00:00 (interval printing: OFF)

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6.2 System Resetting

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6.3 Error Indications

An error indicator appears when a malfunction is discovered during the power-on self-test, or when an invalid key press occurs during integration or display hold operations.

Error Indication List

Error

number

001

101 102

103 104

105 011

012 013

Backup error (*1, *2, *3)

ROM error (*3)

RAM error (*3)

RAM display (*3)

Timer circuit error (*3)

A/D and D/A converter error (*3)

(Integration) Key operation and external control used together

(Integration) Invalid key press during integration operation

(Integration) Integration started while scaling error has

Errors

Error number

Pages

Requires repair

36,83

22,25,34,36

014

015 016

017 018

021

022 023

*1 Err.001 (backup error)

Pressing any key frees the display and returns to the normal measurement state. The 3332, however, undergoes a system reset. (Refer to Section 6.2 "System Resetting".)

*2 Error.001 occurs when backup data stored in RAM is corrupted, which can result from

a depleted internal lithium b ackup battery, external noise ingress or loss of power while changing settings. Please contact your nearest service representative for battery change.

The battery would run down after six years.

*3 Err.101 to 105, 001

Indicate internal problems with the 3332. If these error indications appear, the unit requires repair.

NOTE

(Integration) Restarted from maximum integration count or

occurred integration elapsed time

(Integration) Integration reset carried out during integration

Invalid key is pressed during display hold

Invalid key is pressed during setting

All range are set to OFF.

(Interface) Data out or help operation is carried out while it is

not in Pr. mode or when interface is not installed

(Interface) No space left in internal data buffer

(Interface) Invalid communication

If the measured line is active when the 3332 is tuned on, the 3332 may malfunction or Err105 may be displayed. Thus, turn on the 3332 first and check that Err105 is not displayed, and then turn on the measured line.

36,83

21,22,25,27,29

27,29,34,36

185,193,194

186,189

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6.3 Error Indications

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6.4 Changing the Power Calculation Circuit Clock Frequency

Power measurement is carried out by direct input of the voltage and current waveforms to a multiplier, where an instantaneous power waveform is created. This is then passed through a smoothing circuit.

Instantaneous power

U input

Multiplier Smoothing circuit P

I input

To eliminate the multiplier offset, this unit is designed to allow stable measurement of input voltages and currents chopped at a frequency of 2.44 kHz. However, if the input waveform includes a component with a frequency which is an integral multiple of 2.44 kHz, the indicated power value may fluctuate periodically. In this case, use the following procedure to change the frequency (the clock frequency of the power measurement circuit).

1. Turn the power on.

2. Press the

SHIFT→ENTER

3. After self testing, the current frequency is displayed.

keys during self testing.

NOTE

4. By pressing the ▼ or▲ keys change the frequency.

2.37 kHz 2.44 kHz 2.604 kHz

5. Press the

ENTER

key to enter the setting and the normal measurement mode

is returned.

6. Press the ENTER key again or EXIT key, the normal display is returned.

･ This setting is saved in backup memory. It is not changed, even by a system

reset.

･ If a backup error occurs, this is reset to 2.44 kHz. This is also the factory

default setting.

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6.4 Changing the Power Calculation Circuit Clock Frequency

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6.5 Key Lock State

While measurement values are displayed, pressing the SHIFT→KEYLOCK keys locks the panel, so that keys other than the SHIFT→ KEYLOCK keys are disabled. (The KEYLOCK indicator lights.)

To release the key lock state (to turn off the KEYLOCK indicator)

1. Press the

2. By using the controller, set the 3332 to remote condition.

This does not inhibit the input of external control signals.

SHIFT→KEYLOCK

SHIFT

KEYLOCK

keys again.

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6.5 Key Lock State

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6.5 Key Lock State

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Chapter 7

External Control Terminal and

7.1 Connector Pin Assignment

CAUTION

This connector is not for the RS-232C interface. Do not connect to the personal computer. The unit may be damaged.

Output Terminal

Acceptable connecter (Cable side) (Standard accessory)

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7.1 Connector Pin Assignment

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Pin No. Meaning

1 2 Output

3 Output 4 Output

5 Output

GND for analog output, waveform output, D/A output (A.GND) Analog output of voltage (U) Analog output of current (I) Analog output of active power (P) D/A output (D/A OUT)

6 Input HI output of comparator CH1 (HI1)

7 Input 8 Input

IN output of comparator CH1 (IN1)

LO output of comparator CH1 (LO1)

9 Input COM terminal of comparator CH1 (COM1)

GND for analog output, waveform output, D/A output (A.GND)

11 Input Request for print output (PRINT) 12 Input Hold of comparator output (CH1) (COMPHOLD1)

13 Input 14

15 Output 16 Output

Hold of comparator output (CH2) (COMPHOLD2) GND for analog output, waveform output, D/A output (A.GND) Waveform output of voltage (Um) Waveform output of current (Im)

17 GND for analog output, waveform output, D/A output (A.GND) 18 Input

19 Input 20 Input

21 Input

HI output of comparator CH2 (HI2) IN output of comparator CH2 (IN2)

LO output of comparator CH2 (LO2)

COM terminal of comparator CH2 (COM2)

22 GND for analog output, waveform output, D/A output (A.GND)

23 Input 24 Input

Start/stop integration (START/STOP) Reset integration (RESET) GND for START/STOP, RESET, PRINT (D.GND)

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7.1 Connector Pin Assignment

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7.2 Output Terminal

CAUTION

NOTE

To avoid damage to this unit, do not shorten the output terminal or input voltage.

(1) Analog output (U,I,Pterminals)

Outputs ±5 V DCf.s. direct voltage for range. Outputs simultaneously for voltage (U), current (I) and active power (P).

(2) Monitor output (Um,Im terminals)

Waveform output 1 Vf.s. for range. Outputs simultaneously for voltage(Um), current (Im).

(3) D/A output (D/A OUT terminal)

Refer to Section 4.6, "Setting the D/A Output".

･ Output resistance of output terminals is about 100 Ω. ･ Always use the A.GND terminal (pin 1, 10, 14, 17, 22) for the common of

output terminal.

･ Analog output and D/A output voltage is ±5 VDC f.s. for each range. If

scaling or (PT, CT, SC) are being used, the value reached by multiplying the range times scaling value becomes ±5 VDC.

･ When using the measuring range as auto ranging, analog output rate changes

as range changing. Be careful of making mistake for range conversion when recording on the such line measuring value changes hard. In such measurement we advice you to measure in fixed ranging.

･ The analog output response time is 0.2 to 0.3 seconds (FAST), 5 to 15

seconds (SLOW). Note that if there are fluctuations on the line being measured which happen faster than the response time of the unit, errors in the output voltage may occur. When the response is FAST, analog output below 45 Hz includes ripple, and cannot be used as a correct wave form.

･ Always use shielded cables for output and for external control.

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7.2 Output Terminal

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7.3 Comparator Output

NOTE

Relay rate Minimum application load

Mechanical life Electrical life Approx. 200,000 times

30 Vmax, 0.5 Amax 10μA, 10 mV Approx. 100,000,000 times

When the comparator function is ON, either HI, IN or LO is conducted to COM, depending on the decision results of the comparator. When the comparator function is OFF, neither HI, IN, nor LO is conducted.

Comparator decisions are made during display updates (approx. 5 times /sec.). However, it is necessary to wait until display becomes stable after inputting the measurement signal to carry out a real decision because of the relationship between 3332 analog response and display switching (analog output response time + 2 times display switching (approx. 0.4 seconds.)). However, because the time to reach a steady decision level can vary due to load and power fluctuations, we recommend that an appropriate wait time be determined by experimentation with actual measurements.

Wait time (estimated)

Voltage, current, active power, apparent power, power factor, phase angle, current peak

Frequency The longer cycle of measurement frequency cycle×2,

Integrated value The current at the beginning of integration or the

Response FAST (0.2 to 0.3s)+0.4s=0.6 to 0.7s SLOW (5 to 15s)+0.4 s=5.4 to 15.4s

or 2 display changes (0.4s).

same waiting time as active power.

When the COMPHOLD1 terminal is set to LO, the relay output of comparator CH1 is put in the Hold state. During this time, decisions are not made by the comparator. For the COMPHOLD2 terminal, the output for CH2 is put in the Hold state.

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7.3 Comparator Output

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7.4 External Control Terminal

NOTE

The external control terminals accept a 0/5 V logic signal or a relay contact short/open signal to control the unit. For details of the settings, refer to Sections 4.9, "Setting the Interface", Section 4.3, "Setting the Integration", and Section 4.8, "Setting the Printer Output".

(1) Integration start and stop　(START/STOP terminal)

Integrate time

5 V (open)

0 V (short)

Integration start Integration stop

Integration Start/Stop

If integration is started by external control, the integration set time is ignored and can only be stopped by external control. If it is attempted to stop integration by pressing the Integration's setting display will be the following way below.

START/STOP

400 ms or more

key, "Err.011" is displayed.

NOTE

External control

(2) Reset integration

Over 300 ms

5 V (open)

0 V (short)

Resets integration value during this term

Reset Integration

During integration operating (RUN indicator lit), "Err.015" is displayed and it is not possible to reset integration.

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(3) Comparator output hold (COMPHOLD1､COMPHOLD2)

Comparator hold time

5 V (open)

0 V (short)

Hold start

400 ms or more

Hold end

Comparator Hold

Comparator operation is resumed when the logic signal is 5V within 200ms. While relay output is on hold, comparator decisions are not made.

(4) Data output (Manual printing) (PRINT terminal)

Over 300 ms

5 V (open)

0 V (short)

Data Output

(5) Internal circuit of the external control terminal

10 kΩ

1kΩ

74HC14

0.1 μF

Print order is out put to printer during this term.

+5 V

Input terminal

D.GND

Internal Circuit

NOTE

Always use the D.GND terminal (pin 25) for the common of external control terminal.

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7.4 External Control Terminal

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7.5 Making the Connections

CAUTION

To avoid damage to this unit, do not shorten the output terminal or input voltage.

When connecting the external control terminal or output terminal, use the supplied connector (DB-25P-N, DB19678-2 Japan Aviation Electronics Industry, Limited) or equivalent.

Soldered

Cord

Connector cover

Rear panel

Screw

Cable holding part

Shielded cable

NOTE

･ Make sure the cord is soldered tightly. ･ To prevent the connector from being detached, be sure to fasten the supplied

screws (M2.6×6) with the connector cover. ･ When plugging and unplugging, always hold the connector cover. ･ Always use shielded cables for output and for external control. ･ If the shield of the cable is not grounded, connect it to the connecter cover

or cable holding part described in the figure above.

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7.5 Making the Connections

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7.5 Making the Connections

Hioki 3332 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual