Uni-t UTM 1233 User Manual [ru]

Model UT233

OPERATING MANUAL

Model UT233: OPERATING MANUAL

TABLE OF CONTENTS TITLE PAGE

Overview Unpacking Inspection Safety Information Rules For Safe Operation International Electrical Symbols The Meter Structure A. The Meter Front Structure B. The Meter Back and Bottom Structure Functional Buttons Display Symbols Measurement Operation

A. Active power + AC Voltage + AC Current Measurement B. Apparent Power + AC Voltage + AC Current Measurement

C. Reactive Power + AC Voltage + AC Current Measurement D. Power Factor cos + AC Voltage + AC Current Measurement E. Phase Angle + AC Voltage + AC Current Measurement F. Frequency Hz + AC Voltage + AC Current Measurement G. Active Energy + Active Power + Time Measurement

3 3 4 4 6 7 7 8 9 12 14 14 21 24 26 28 30 32

Model UT233: OPERATING MANUAL

TABLE OF CONTENTS TITLE PAGE

H. Phase Sequence Specifications A. General Specifications B. Environmental Requirements Accuracy Specifications A. AC Voltage (True RMS) B. Frequency C. AC Current (True RMS) D. Active Power E. Apparent Power F. Reactive Power G. Power Factor H. Phase Angle I. Active Energy Maintenance A. General Service B. Replacing the Battery

34 37 37 38 39 39 39 40 40 41 42 43 43 44 45 45 45

Model UT233: OPERATING MANUAL

Overview Unpacking Inspection

This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly.

Warning

To avoid electric shock or personal injury, read the ìSafety Informationî and ìRules for Safe Operationî carefully before using the Meter.

Model UT233 is a digital power clamp meter (hereafter

referred to as ìthe Meterî) is a handheld intelligent power meter which has both the features of digital current meter and also power measurement meter.

Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged part:

Item

1 2

4 5 6 7

Description

English Operating Manual Test Lead (red, black, blue and yellow colour Alligator Clip (red, black, blue and yellow colour) USB Interface Cable Software Tool Box

1.5V Battery (LR6)

Qty

1 piece 1 piece each colour 1 piece each colour 1piece 1 piece 1 piece 4 pieces

The Meter can measure Voltage, Current, Active Power, Apparent Power, Reactive Power , Power Factor, Phase Angle, Frequency, Active Energy and Phase Sequence.

In the event you find any missing or damage, please contact your dealer immediately.

Model UT233: OPERATING MANUAL

Safety Information

This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. III 600V, CAT IV 300V) and double insulation.

CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV. CAT IV: Primary supply level, overhead lines, cable systems.

Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired.

In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment under test.

A Note identifies the information that user should pay attention to.

International electrical symbols used on the Meter and

in this Operating Manual are explained on page 6.

Rules For Safe Operation

Warning

To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, adhere to the following rules:

Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the insulation around the connectors.

Inspect the test leads for damaged insulation or exposed metal. Replace damaged test leads with identical model number or electrical specifications before using the Meter.

Do not apply more that the rated voltage, as marked on the Meter.

When measurement has been completed, disconnect the connection between the test leads and the circuit under test, remove the

Model UT233: OPERATING MANUAL

testing leads away from the input terminals of the Meter and turn the Meter power off.

Do not carry out the measurement when the Meterís back case and / or battery door is opened to avoid electric shock.

When the Meter working at an effective voltage over 30V in AC, special care should be taken.

Use the proper terminals and function for your measurements.

Do not use or store the Meter in an environment of high temperature, humidity, explosive, inflammable and strong magnetic field. The performance of the Meter may deteriorate after dampened.

Do not use the Meter if the surface of it is wet or the userís hands are wet.

When using the test leads, keep your fingers behind the finger guards.

Replace the battery as soon as the battery indicator appears. With a low battery, the Meter might produce false readings that can lead to electric shock and personal injury.

When opening the battery door, must make sure the Meter is power off.

When servicing the Meter, use only the same model number or identical electrical specifications replacement parts.

The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident.

Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing. No abrasive and solvent should be used to prevent the surface of the Meter from corrosion, damage and accident.

Turn the Meter off when it is not in use and take out the battery when not using for a long time.

Constantly check the battery as it may leak when it has been using for some time, replace the battery as soon as leaking appears. A leaking battery will damage the Meter.

International Electrical Symbols

AC (Alternating Current) Grounding Double Insulated Warning. Refer to the Operating Manual Deficiency of Built-In Battery Danger of High Voltage Conforms to Standards of European Union

Model UT232: OPERATING MANUAL

Model UT233: OPERATING MANUAL

The Meter Structure

A. The Meter Front Structure (see figure 1)

Black Red Blue Yellow

Figure 1

Transformer Jaw: designed to pick up the AC and DC current flowing through the conductor. It could transfer current to voltage. The tested conductor must vertically go through the Jaw center.

Hand Guards: to protect userís hand from touching the dangerous area.

Power button

Max/ button

MENU button

LOAD button (recall data)

SELECT button (press to select alternate function and sum of Watts measurement)

MIN/ button

V3 Input Terminal (Third phase measurement)

V2 Input Terminal (Second phase measurement)

V1 Input Terminal (First phase measurement)

COM Input Terminal

CLEAR button (maximum and minimum)

Model UT233: OPERATING MANUAL

14 15 16 17 18 19 20

button (Sum) SAVE button (data store button) USB button LIGHT button (auto display backlight button) HOLD button LCD Display Testing Leads (Red, Black, Blue and Yellow)

B. The Meter Back and Bottom Structure (see figure2)

Figure 2

1 Infrared slot 2 USB Interface Cable

Model UT233: OPERATING MANUAL

Functional Buttons

Below table indicated for information about the functional button operations.

Button POWER

HOLD

LIGHT

Operation Performed

Press and hold POWER for 1 second to turn the Meter on. Press POWER again to turn the Meter off. Press HOLD to enter the Hold mode in any mode,appears and the Meter beeps. Press HOLD again to exit the Hold mode to return to measurement mode, the Meter beeps and disappears.

Press LIGHT to turn the display backlight on. The display backlight will be off automatically after 30 seconds.

Press MENU to display the following functions in sequence:

Button MENU

Operation Performed

Active power (main display) + AC V oltage (left secondary display) + AC Current (right secondary display) Apparent Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display)

Reactive Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Power Factor (main display) + AC Voltage (left secondary display) + AC Current (right secondary display)

Phase Angle (main display) + AC Voltage (left secondary display) + AC Current (right secondary display). Frequency (main display) + AC Voltage (left secondary display) + AC Current (right secondary display).

Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display)

Model UT233: OPERATING MANUAL

Button MENU Phase sequence

MAX/

LOAD

SELECT

Operation Performed

Press to start recording of maximum value, it valid at voltage, current, active power, apparent power and reactive power ranges only.

Press once at LOAD mode, MR icon shown, the Meter displays the next stored reading

Press once to enter LOAD mode, MR appears and the Meter beeps. Press again to exit LOAD mode, MR disappears and the Meter beeps.

Press and hold LOAD for 1 second to display the stored data quickly.

At Active power (main display) + AC V oltage (left secondary display) + AC Current (right secondary display) mode, press SELECT button to step through first phase, second phase, third phase and sum of watts.

Button

SELECT

SAVE

CLEAR

MIN /

Operation Performed

At other mode except phase sequence, press SELECT to step through first phase, second phase and the third phase.

Press once to store single reading, Press and hold for over 1 second to continuous store reading. Press SAVE again to exit. The maximum number of data store is 99, when it achieves 99, the Meter shows FULL. Press CLEAR to clear the stored reading in order to store next reading.

At active energy range, press to reset time the zero, then restart the timing. At all other ranges, press to clear stored readings.

Press to start recording of minimum value, it valid at voltage, current, active power, apparent power and reactive

power ranges only.

Model UT233: OPERATING MANUAL

Button MIN /

Operation Performed

Press once at LOAD mode, MR icon shown, the Meter displays the previous stored reading. At Active power (main display) + Phase angle (secondary display) mode, press

once button to sum up the current first phase of 3 phase measurement result. Then carry out second phase power measurement. Press again to sum up the second phase power measurement result, then carry out third phase power measurement. Press again to sum up the third phase power measurement result, then press SELECT to enter the measurement of sum of the watts mode, the display shows the 3 phase sum of the watts value (Power factor + Active power + Reactive power).

Model UT233: OPERATING MANUAL

1 2 3 4 5 6 7

9 10 11 12 13

141516171819

Display Symbols (see figure 3)

Figure 3

Number

1 2 3

4 5 6 7

9 10 11 12

Symbol CAL FUL CLR

USB

RST

2 1

Meaning

Calibration symbol Indicator for data stored is full Indicator for clear the stored reading Data Output is in progress Data hold is active Phase sequence The battery is low.

Warning: To avoid false

readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears.

Watt: Sum of Watt Third phase symbol Primary reading unit symbol Second phase symbol First phase symbol

Model UT233: OPERATING MANUAL

Number

14 15 16 17 18 19 20 21 22 23 24 25

Symbol

S mm h KW MIN MAX Auto Cosφ

MEN MR

Meaning

Right secondary display unit symbol Unit for second Unit for minute Unit for hour Left secondary display unit symbol Minimum reading Maximum reading Auto ranging indicator Cos indicator Indicates negative reading Indicator for AC voltage or current Indicator for data store Indicator for recall the stored reading High voltage symbol

Model UT233: OPERATING MANUAL

Measurement Operation

Press and hold ON/OFF button for one second to turn the Meter on. The default range is the last measurement range when you turned off the Meter. Replace the battery as soon as the battery indicator appears on the display.

A. Active power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement (see figure 4)

The active power ranges are: 40A, 100A, 400A and 1000A

The AC Voltage ranges are: 15V, 100V, 300V and 600V

The AC Current ranges are: 40A, 100Am 400A and 1000A

Warning To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600 v.r.s. and AC current 1000A v.r.s.

To measure active power + AC voltage + AC current, connect the Meter as follows:

Press the MENU to select Active power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) range.

Press the lever to open the transformer jaw, and clamp them to the corrresponding phase of tested conductor. If user needs to mesaure any phase of the 3 phase, then clamp them to that phaseís conductor.

Connecting method (see figure 4, 5, 6).

Model UT233: OPERATING MANUAL

Yellow

Black

Red

Blue

Insert red test leads to V1 input terminal. Insert blue test leads to V2 input terminal Insert yellow test leads to V3 input terminal Connect red blue and yellow test leads to every live wire of the 3 phase. Insert black test leads to COM input terminal and connect it to the neutrual wire of the 3 phase. You must specify that this connection is used when the main transformer have STAR connection.

Figure 4

Yellow

Figure 5

Model UT233: OPERATING MANUAL

Insert red test leads to V1 input terminal. Insert blue test leads to V2 input terminal Insert black test leads to V3 input terminal and connecting it to every live wire of the 3 phase.

Red

Blue

Model UT233: OPERATING MANUAL

Red

Black

Figure 6

Insert red test lead to V1, V2 or V3 input terminal corresponding to one of, 1, 2 or 3phase Insert black test leads to COM input terminal. Connecting the two test leads to live and neutual wires.

When measuring 3 phases 4 wires or 3 phases 3 wires:(see figure 7, 8, 9, 10, 11, 12, 13).

Press SELECT to choose first phase 1, see figure 7. The triple displays show the acitve power kW value, the voltage value and the current value of 1.

Figure 7

If necessary, press to get the sum of watts as figure 8.

Figure 8

Model UT233: OPERATING MANUAL

After sum up the current power measurement value of the first phase, then press SELECT to choose the second phase 2, as figure 9.

Figure 9

The triple displays shows the value of acitve power kW, AC voltage V and AC current A of 2. If ncessary, press to get the sum of watts as figure

10.

After sum up the current power meaursuremnt value of the second phase, then press SELECT again to choose the third phase 3, as figure 11.

Figure 11

The triple displays shows the value of acitve power KW, AC voltage V and AC current A of 3. If ncessary, press to get the sum of watts as figure

12.

Figure 12 Figure 10

Model UT233: OPERATING MANUAL

After sum up the current power measurement value of the third phase, finally press SELECT again to display the 3 phases sum of waltt value (sum of power factor + sum of active power + sum of reactive power).

Figure 13

The maximum power is 600kW of single phase active

5. power, OL will be displayed when it is over than that. The maximum range is 1800kW of three phase sum of active power and reactive power, OL will be displayed when it is over than that.

Press MAX/ , the display shows MAX, it starts recording the maximum active power value, voltage value and current value. Press again to display the current active power value, voltage value and current value. Press MIN/ , the display shows MIN, it starts

7. recording the minimum active power value, voltage value and current value. Press again to display the current active power value, voltage value and current value.

Note

When there is no input or single phase, the Meter displays OL. button is not valid. It can only sum up and save the current measurement value. The maximum and minimum value cannot sum up and save. Only at this range can carry out sum of watts measurement, other ranges cannot carry out this measurement. USB interface connection is invalid when carrying out sum of watt measurement. When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

Apparent Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

To test for Apparent Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display), connect the Meter as follows:

Press the MENU to select Apparent Power (main

1. display) + AC Voltage (left secondary display) + AC Current (right secondary display) range. Press the lever to open the transformer jaw, and

2. clamp them to the corrresponding phase of tested conductor. If user needs to mesaure any phase of the 3 phase, then clamp them to that phaseís conductor. The connecting method of 3 phases 4 wires, 3

3. phases 3 wires or single phase 2 wires, see figure 4, 5 and 6.

When measuring 3 phase 4 wires: (see figure 15,

4. 16, 17).

Press SELECT to choose the first phase 1, see figure 15.

Figure 15

The triple displays shows the first phase value of apparent power kVA, AC voltage V and AC current A.. Then press SELECT again to choose the second phase 2, see figure 16.

Figure 16

The triple displays shows the second phase value of apparent power kVA, AC voltage V and AC current A. Press SELECT again to choose the third phase 3, see figure 17.

Model UT233: OPERATING MANUAL

The triple displays shows the third phase value of apparent power kVA, AC voltage V and AC current A.

When measuring 3 phase 3 wires:

5. The first phase and second phase operating

method is same as three phase 4 wires. Jump over the third phase measurement.

The maximum measuring range is 600kW when measuring single phase apparent power kVA, OL wil be displayed when it is over than that.

Press MAX/ the display shows MAX, it starts recording the maximum apparent power value, AC voltage value and AC current value. Press again to display the current apparent power value, AC voltage value and AC current value.

Press MIN/ the display shows MIN, it starts recording the minimum apparent power value, AC voltage value and AC current value. Press again to display the current apparent power value, AC voltage value and AC current value.

Figure 17

Model UT233: OPERATING MANUAL

Note

When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

Reactive Power (main display) + AC Voltage (left

secondary display) + AC Current (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

To test for Reactive Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display), connect the Meter as follows:

Press the MENU to select Reactive Power (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) range.

Press the lever to open the transformer jaw, and

clamp them to the corrresponding phase of tested conductor. If user needs to mesaure any phase of the 3 phase, then clamp them to that phaseís conductor.

The connecting method of 3 phases 4 wires, 3 phases 3 wires or single phase 2 wires, see figure 4, 5 and 6.

When measuring 3 phase 4 wires: (see figure 17, 18, 19)

Press SELECT to choose the first phase 1, see figure 18.

Figure 18

The triple displays shows the first phase value of reactive power Kvar, AC voltage V and AC current A.

Model UT233: OPERATING MANUAL

Then press SELECT again to choose the second phase 2, see figure 19.

Figure 19

The triple displays shows the second phase value of reactive power Kvar, AC voltage V and AC current A. Press SELECT again to choose the third phase 3, see figure 20.

Figure 20

The triple displays shows the third phase value of reactive power Kvar, AC voltage V and AC current A.

5. When measuring 3 phase 3 wires: The first phase and second phase operating

method is same as three phase 4 wires. Jump over the third phase measurement.

6. The maximum measuring range is 600kW when

measuring single phase reactive power Kvar, OL wil be displayed when it is over than that.

7. MAX and MIN are not valid at this measurement

mode.

Note

When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

D. Power Factor cos (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

To test for Power Factor (main display) + AC Voltage (left secondary display) + AC Current (right secondary display), connect the Meter as follows:

1. Press the MENU to select Power Factor (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) range.

2. Press the lever to open the transformer jaw, and clamp them to the corrresponding phase of tested conductor. If user needs to mesaure any phase of the 3 phase, then clamp them to that phaseís conductor.

3. The connecting method of 3 phases 4 wires, 3 phases 3 wires or single phase 2 wires, see figure 4, 5 and

4. When measuring 3 phase 4 wires: (see figure 21, 22, 23)

l Press SELECT to choose the first phase 1, see figure 21.

Figure 21

The triple displays shows the first phase value of power factor cos , AC Voltage V and AC Current A. Then press SELECT again to choose the second phase 2, see figure 22.

Model UT233: OPERATING MANUAL

Figure 22

5. When measuring 3 phase 3 wires: The first phase and second phase operating

method is same as three phase 4 wires. Jump over the third phase measurement.

6. MAX/ and MIN/ are not valid at this

measurement mode.

The triple displays shows the second phase value of power factor cos , AC V oltage V and AC Current A. Press SELECT again to choose the third phase

3, see figure 23.

Figure 23

The triple displays shows the third phase value of power factor cos , AC Voltage V and AC Current A.

Note

When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

E. Phase Angle (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

To test for Phase Angle (main display) + AC Voltage (left secondary display) + AC Current (right secondary display), connect the Meter as follows:

Press the MENU to select Phase Angle (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) range.

The connecting method of 3 phases 4 wires, 3 phases 3 wires or single phase 2 wires, see figure 4, 5 and 6

When measuring 3 phase 4 wires: (see figure 24, 25, 26)

Press SELECT to choose the first phase 1, see figure 24.

Figure 24

The triple displays shows the first phase value of phase angle AC Voltage V and AC Current A. Then press SELECT again to choose the second phase 2, see figure 25

Figure 25

Model UT233: OPERATING MANUAL

The triple displays shows the second phase value of phase angle AC Voltage V and AC Current A. Press SELECT again to choose the third phase

3, see figure 26.

Figure 26

The triple displays shows the third phase value of phase angle AC Voltage V and AC Current A.

When measuring 3 phase 3 wires:

The first phase and second phase operating method is same as three phase 4 wires. Jump over the third phase measurement.

MAX/ and MIN/ are not valid at this measurement mode.

Note

When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

F. Frequency Hz (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

Frequency Measurement only measures the frequency of voltage signal not he frequency of current signal.

To test for Frequency Hz (main display) + AC Voltage (left secondary display) + AC Current (right secondary display), connect the Meter as follows:

Press the MENU to select Frequency Hz (main display) + AC Voltage (left secondary display) + AC Current (right secondary display) range.

The connecting method of 3 phases 4 wires, 3 phases 3 wires or single phase 2 wires, see figure 4, 5 and 6

When measuring 3 phase 4 wires: (see figure 27, 28, 29)

Press SELECT to choose the first phase 1, see figure 27.

Figure 27

Model UT233: OPERATING MANUAL

The triple displays shows the first phase value of frequency Hz, AC Voltage V and AC Current A. Then press SELECT again to choose the second phase 2, see figure 28

Figure 28

The triple displays shows the second phase value of Frequency Hz AC Voltage V and AC Current A. Press SELECT again to choose the third phase 3, see figure 29.

Figure 29

The triple displays shows the third phase value of Frequency Hz, AC Voltage V and AC Current A.

When measuring 3 phase 3 wires:

5. The first phase and second phase operating

method is same as three phase 4 wires. Jump over the third phase measurement.

MAX/ and MIN/ are not valid at this measurement

mode.

Note

When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

G. Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display) Measurement

Warning

To avoid damages to the Meter or harms to you, do you measure higher than AC voltage 600V rms and AC current 1000A rms.

To test for Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display), connect the Meter as follows:

Press the MENU to select Active Energy (main display) + Active Power (left secondary display) + Time (right secondary display) range.

The connecting method of 3 phases 4 wires, 3 phases 3 wires or single phase 2 wires, see figure 4, 5 and 6.

Press SELECT to choose one of the three phases ( 1, 2, 3), see figure 30.

Figure 30

The double display shows the value of tested objectís active engergy kWh value and the measuring time of the corresponding phase. The measuring reading gets increasing along with the time increases. Press HOLD to read a particular time kWh value. Then the reading and time are locked, but still continuous accumulate measuring time. After read the data, press HOLD again to continous measurement. kWh value continous accumulate and the measuring time jumps to the present measuring time.

Model UT233: OPERATING MANUAL

When the measuring time is over 24 hours or the Meter is switched to other measuring ranges, active energy measuring will stop. The maximum readinng of acitve energy is 9999kWh. OL will be displayed when the reading is over than that.

MAX/ and MIN/ are not valid at this measurement

5. mode. Press CLEAR to reset the time.

6. USB interface feature is not valid at this measurement

7. mode.

Note

When there is no input signal, it cannot carry out active energy measurement. When there is input signal, the maximum waiting time is around 10s before timing. When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

Model UT233: OPERATING MANUAL

H. Phase Sequence

For Phase Sequence Judging, connect the Meter as follows:

1. Press the MENU to select AC Voltage (main display) + AC Voltage (left secondary display) + AC Voltage (right secondary display) range as figure 31.

Red

Blue

Yellow

Black

Figure 31

Insert red test lead into V1 input terminal. Insert blue test lead into V2 input terminal. Insert yellow test lead into V3 input terminal. Insert black test lead into COM input terminal. Connect these four test leads to the circuit under test or the loading of three phases and grounding terminal For the loaded return circuit of 3 phases 4 wires, the Meter shows the phase sequence result as figure 32, 33 and 34:

Figure 32 =phase missing

Figure 33 =negative phase sequence

Figure 34 =positive phase sequence

Model UT233: OPERATING MANUAL

2. Positive phase sequence is shown as below figure

35.

V1 input terminal corresponding voltage

V2 input terminal corresponding voltage

V3 input terminal corresponding voltage

Figure 35

When V1 input terminal, V2 input terminal and V3 input terminal base on the below table connecting A phase, B phase and C phase, all three phases voltage are over 100V, LCD displays positive phase sequence result

Positive phase sequence

Input Terminal

A, B, C phases

V1 A B C

V2 B C A

Checking Result Positve phase sequence

V3 C A B

Negative phase sequence is shown as below figure.

3. When V1 input terminal, V2 input terminal and V3 input terminal base on the below table connecting A phase, B phase and C phase, all three phases voltage are over 100V , LCD displays negative phase sequence result, as figure 36.

V1 input terminal corresponding voltage.

V2 input terminal corresponding voltage

V3 input terminal corresponding voltage

Figure 36

Model UT233: OPERATING MANUAL

Negative phase sequence

Input Terminal

A, B, C phases

V1 A B C

V2 C A B

Checking Result Negative phase sequence

When any one phaseís voltage has no singal or less than 100V at 3 phases 4 wires overload mode, the LCD display missing phase result.

USB interface feature is not valid at this measurement mode.

Note

Postive and negative phase sequence checking voltage range is 100V ~500V. When testing has been completed, disconnect the connection between the testing leads and the circuit under test and remove testing leads from the input terminals.

V3 B C A

Model UT233: OPERATING MANUAL

Specifications

A. General Specifications

Maximum Voltage between any Terminals and grounding: Refer to different range input protection voltage. Display: Multi LCD displays, Maximum display 9999. Ranges: Auto Overloading: Display OL. Battery Deficiency: Display . Data Holding: Display . Data Logging: Maximum 99, Single or Continuous record and recall data Maximum and Minimum value display: Voltage, Current, Active Power , Apparent Power and Reactive Power ranges Display Backlight Computer connection: USB Sleep Mode: To preserve battery life, the Meter automatically turns off if you do not turn press any button for around 15 minutes., except at active energy range.

Analogue Bar Graph Sampling: High speed: 2 times per second, Low speed: 1 time per 3 seconds, Mid speed: 1 time per 2 seconds. Max. Jaw Size: 55mm diameter. Power: 4 x 1.5V Alkaline battery (LR6 AA) Dimensions: 303mm x 112mm x 39mm Weight: Approximate 601g

B. Environmental Requirements

Model UT233: OPERATING MANUAL

Accurate Specifications

Accuracy: (a% reading + b digits), guarantee for 1 year. Operating temperature: 23

Operating humidity: 45~75%R.H

A. AC Voltage (True RMS)

Range 15V 100V 300V 600V

B. Frequency

Range 20Hz~500Hz

Resolution

0.1V

Resolution 1Hz

Accuracy

(1.2%+5)

Accuracy

Allowable Maximum overload protection voltage

600 RMS

(0.5%+5)

Input Impedance

10M

C. AC Current (True RMS)

Range 40A 100A 400A 1000A

D. Active Power ( W=V x A x COS )

Current / Voltage

Current Range

Resolution

0.1A

40A 100A 400A 1000A

15V

0.60kW

1.50kW

6.00kW

15.00kW

Accuracy

(2%+5)

Model UT233: OPERATING MANUAL

Allowable Maximum overload protection current

1000A RMS

Voltages Range

100V

4.00kW

10.00kW

40.00kW

100.0kW

300V

12.00kW

30.00kW

120.0kW

300.0kW

600V

24.00kW

60.00kW

240.0kW

600.0kW

Accuracy Resolution

Remarks:

Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS

At 15/1000A range: (3%+10) Others: (3%+5) <100kW: 0.01kW

100kW: 0.1kW

Model UT233: OPERATING MANUAL

E. Apparent Power (VA = V x A)

Current / Voltage

40A Current Range

Accuracy Resolution

Remarks:

Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS

100A

400A

1000A

15V

0.60kVA

1.50kVA

6.00kVA

15.00kVA

At 15/1000A range: (3%+10) Others: (3%+5) <100kVA: 0.01kVA

100kVA: 0.1kVA

100V

4.00kVA

10.00kVA

40.00kVA

100.0kVA

Voltages Range

300V

12.00kVA

30.00kVA

120.0kVA

300.0kVA

600V

24.00kVA

60.00kVA

240.0kVA

600.0kVA

F. Reactive Power (Var = V x A x SIN )

Model UT233: OPERATING MANUAL

Current / Voltage

40A Current Range

Accuracy Resolution

Remarks:

Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS

100A

400A

1000A

15V

0.60kVar

1.50kVar

6.00kVar

15.00kVar

15V/1000A Range: (4%+20) Other : (4%+5) <100kVar: 0.01kVar

100kVar: 0.1kVar

100V

4.00kVar

10.00kVar

40.00kVar

100.0kVar

Voltages Range

300V

12.00kVar

30.00kVar

120.0kVar

300.0kVar

600V

24.00kVar

60.00kVar

240.0kVar

600.0kVar

Model UT233: OPERATING MANUAL

G. Power Factor (PF = W / VA)

Range

0.3~1 (capacitive or inductive)

Remarks:

Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS

H. Phase Angle (PG=acos (PF))

Range 0∞ ~360∞

0∞ ~360∞

Remarks:

Allowable maximum overload protection voltage: 600V RMS Allowable maximum overload protection current: 1000A RMS

Accuracy

0.022

For reference only

Accuracy

1∞

For reference only

Resolution

0.001

Resolution 1∞

Measuring Condition The minimum measuring current 10A The minimum measuring voltage 45V Measuring current less than 10A OR Measuring voltage less than 45V

I. Active Energy (kWh)

Model UT233: OPERATING MANUAL

Range 1~9999kWh

Remarks:

Allowable maximum overload protection voltage:

600V RMS

Allowable maximum overload protection current:

1000A RMS

Accuracy

(3%+2)

Resolution

0.001kWh

Model UT233: OPERATING MANUAL

MAINTENANCE

This section provides basic maintenance information including battery replacement instruction.

Warning

Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information.

To avoid electrical shock or damage to the Meter, do not get water inside the case.

A. General Service

Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. To clean the terminals with cotton bar with detergent, as dirt or moisture in the terminals can affect readings. Turn the Meter power off when it is not in use. Take out the battery when it is not using for a long time. Do not use or store the Meter in a place of humidity,

high temperature, explosive, inflammable and strong magnetic field.

B. Replacing the Battery (see figure 37)

Figure 37

Warning

To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator ì î appears.

Make sure the transformer jaw and the tests leads are disconected from the circuit being tested before opening the case bottom.

To replace the battery:.

Press POWER to turn the Meter off and remove all the connections from the input terminals

Turn the Meterís front case down.

Remove the screw from the battery door, and separate the battery door from the case bottom.

Take out the old battery and replace with 4 x 1.5V battery (LR6).

Rejoin the case bottom and the battery compartment, and reinstall the screw.

Model UT233: OPERATING MANUAL

*END*

This operating manual is subject to change without notice.

Model UT233: OPERATING MANUAL

Uni-Trend Technology (Dongguan) Limited Dong Fang Da Dao Bei Shan Dong Fang Industrial Development District Hu Men Town, Dongguan City Guang Dong Province China Postal Code: 523 925

Headquarters: Uni-Trend Group Limited Rm901, 9/F, Nanyang Plaza 57 Hung To Road Kwun Tong Kowloon, Hong Kong Tel: (852) 2950 9168 Fax: (852) 2950 9303 Email: info@uni-trend.com http://www.uni-trend.com

Uni-t UTM 1233 User Manual [ru]

Specifications and Main Features

Frequently Asked Questions

User Manual