Hioki CT6590 Instruction Manual

Warranty

CT6590

SENSOR UNIT

Instruction Manual

September 2013 Revised edition 1

Printed in Japan

CT6590A981-01 13-09H

Warranty malfunctions occurring under conditions of normal use in con­formity with the Instruction Manual and Product Precautionary Mark­ings will be repaired free of charge. This warranty is valid for a period
of one (1) year from the date of purchase. Please contact the distribu­tor from which you purchased the product for further information on
warranty provisions.

Introduction

Thank you for purchasing the HIOKI Model CT6590 Sensor
Unit. To obtain maximum performance from the device, please
read this manual first,and keep it handy for futur e refe re nc e.

Initial Inspection

When you receive the device, inspect it carefully to ensure that
no damage occurred during shipping. In particular, check the
accessories, panel switches, and connectors. If damage is evi­dent, or if it fails to operate according to the specifications, con­tact your authorized Hioki distributor or reseller.

Safety

This manual contains information and warnings essential for
safe operation of the device and for maintaining it in safe oper­ating condition. Before using it, be sure to carefully read the fol­lowing safety precautions.

This device is designed to comply with IEC 61010 Safety
Standards, and has been thoroughly tested for safety
prior to shipment. However, mishandling during use
could result in injury or death, as well as damage to the
device. Using the device in a way not described in this
manual may negate the provided safety features.
Be certain that you understand the instructions and pre­cautions in the manual before use. We disclaim any
responsibility for accidents or injuries not resulting
directly from device defects.

Safety Symbols

In the manual, the symbol indicates particularly important
information that the user should read before using the device.
The symbol pri nted on the device indicates that the user
should refer to a corresponding topic in the manual (marked
with the symbol) before using the relevant function.

Indicates DC (Direct Current).

1234

The following symbols in this manual indicate the relative impor­tance of cautions and warnings.

Indicates that incorrect operation presents an extreme haz­ard that could result in serious injury or death to the user.

Indicates that incorrect operation presents a significant haz­ard that could result in serious injury or death to the user.

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

Indicates advisory items related to performance or correct
operation of the device.

Symbols for Various Standards

WEEE marking:
This symbol indicates that the electrical and e lectronic
appliance is put on the EU market after August 13, 20 05 ,
and producers of the Member States are required to dis­play it on the appliance under Article 11.2 of Directive
2002/96/EC (WEEE).

This symbol indicates that the product conforms to safety
regulations set out by the EC Directive.

Accuracy

We define measurement tolerances in te rms of f.s. (full scale)
and rdg. (reading) values, with the following meanings:

rdg.
(reading or displayed
value)

f.s.
(maximum display value
or scale length )

The value currently being measured and
indicated on the measuring device.

The maximum displayable value or scale
length. This is usually the name of the cur­rently selected range.

Operating Precautions

Follow these precautions to ensure safe oper ation and to obt ain
the full benefits of the various functions.

Installation Environment

Avoid the following locations that could cause an accident or
damage to the instrument.

Exposed to direct
sunlight
Exposed to high
temperature

Exposed to water,
oil, other chemi­cals, or solvents
Exposed to high
humidity or con­densation

Exposed to strong
electromagnetic
fields
Near electromag­netic radiators

Operating temperature and humidity
range: See specifications.
Storage temperature and humidi ty
range: See specifications.

To prevent electric shock, do not allow sensor outputs
or the sensor case to come into contact with high volt­ages.

To avoid damage to the device, protect it from physical
shock when transporting and handling. Be especially care­ful to avoid physical shock from dropping.

Preliminary Checks

Before using the device for the first time, verify that it operates
normally to ensure that no damage occurred during storage or
shipping. If you find any damage, contact your authorized Hioki
distributor or reseller.

In the presence of
corrosive or
explosive gases

Near induction
heating systems
(e.g., high-fre­quency induction
heating systems
and IH cooking
utensils)

Specifications

General Specifications

Compatible
sensors

Clamp sensor output
ranges

Accuracy guarantee
for temperature and
humidity

Guaranteed accuracy period: 1 year
Amplitude accuracy

Phase accuracy

Operating
temperature and
humidity range

Storage temperature
range

Location for use
Power supply

Rated power supply
voltage

Maximum rated
power

Continuous operating
time (Battery)

Output Impedance 50
Output cable length Approx. 1000 mm (39.37”)

Dimensions
Mass Approx. 165 g (5.8 oz.) (including batteries)
Accesories

Options
Applying

standards

Clamp Sensor Combination Specifications

Refer to “Specifications” in the clamp sensor instruction manual.
Output rates and ranges

Range (f.s.) 100 A 200 A 2000 A

H

Output rate 1 mV/A 1 mV/A 0.1 mV/A
Range (f.s.) 10 A 20 A 200 A

L

Output rate 10 mV/A 10 mV/A 1 mV/A

Output (f.s.) 100 mV 200 mV 200 mV

CT9691 sensor combination accuracy

Frequency DC DC < f 66 (Hz) 66 < f 500 (Hz)

Continu­ous input

Phase - ±2deg. Not defined.

CT9692 sensor combination accuracy

Frequency DC DC < f 66 (Hz) 66 < f 1k (Hz)
Continu-

ous input
Phase - ±2deg. Not defined.

I
80 <

I 200 (A)

CT9691, CT9692, CT9693 Clamp on AC/DC Sensor and
the 9691, 9692, 9693 Clamp On AC/DC Sensor
(Model 9691, 9692, 9693: no phase definition)

Switchable between 2 ranges (see table)
23°C ± 5°C (73°F±9°F), 80%RH or less

(no condensation)

±

0.5% rdg. ± 0.5 mV

(DC  f  1kHz, (DC < f < 5 Hz is design value))
±

0.2 deg.

(f 66 Hz, (DC < f < 10 Hz is design value))

°

C to 40°C (14°F to 104°F), 80%RH or less

-10
(no condensation)

°

C to 45°C (104°F to 113°F), 60%RH or less (no con-

40
densation)

°

C to 50°C (113°F to 122°F), 50%RH or less (no con-

45
densation )
(When using batteries, depends on battery specifications.)

°

C to 60°C (-4°F to 140°F), 80%RH or less (no conden-

-20
sation),
excluding batteries

Indoor, pollution degree 2, altitude up to 2000 m (6566
feet)

Two LR06 alkaline batteries, optional AC adapter, or 5 V
to 15 VDC external power

When using batteries: 1.5 V DC × 2
When using AC adapter or external DC power supply: 5 V
to 15 V DC
(Voltage fluctuations of
age are taken into account.)

When using batteries: 1 VA
When using AC adapter or external DC power supply: 1.5
VA

Approx. 25 hours (23°C, continuous use while connected
to CT9691 to CT9693)



(±5%)

Approx. 36W×120H×34D mm
Approx. 1.42”W×4.72”H×1.34”D
(excluding protruding parts)

• Two LR06 alkaline batteries

• Instruction manuals (Japanese/English/Chinese) one each

• Connector cover
9445-02 AC Adapter

9445-03 AC Adapter
Safety EN61010

EMC EN61326, EN61326-2-2, EN61000-3-2,

EN61000-3-3

CT9691 sensor CT9692 sensor CT9693 sensor

80 (A)

I 100

(A)

±1.5%rdg.
±1%f.s.

±1.5%rdg.
±0.5%f.s.

±

10% from the rated supply volt-

±2.5%rdg.

±1.5%rdg.
±1%f.s.

±1.5%rdg.
±0.5%f.s.

±1%f.s.
±3.0%rdg.

±1%f.s.

±2.5%rdg.
±0.5%f.s.

CT9693 sensor combination accuracy

DC < f

Frequency DC 45  f 66 (Hz)

I
Continu­ous input

Phase - ±2deg.

1800 (A)

I 2000

1800 <

(A)

±2.0%rdg.
±0.5%f.s.

±1.5%rdg.
±0.5%f.s.

±2.5%rdg.
±0.5%f.s.

Measuring instrument with an input resistance of 1 M

 45,
1k (Hz)

66 < f
±2.5%rdg.

±0.5%f.s.
Not defined.
DC < f < 45 Hz:

±2deg.

1k (Hz):

66 < f
Not defined.

 or higher with

sine wave input measured with the conductor centered and input less
than or equal to the rated value and within the derating range
DC < f < 5 Hz is design value for amplitude accuracy.
DC < f < 10 Hz is design value for phase accuracy.

Display

POWER LED
display

LED green: Power on
LED red: Low battery (when using battery power)

Maintenance and Service

Cleaning

To clean the device, wipe it gently with a soft cloth moistened
with water or mild detergent. Never use solvents such as ben­zene, alcohol, acetone, ethe r, ketones, thinners or ga so line, as
they can deform and discolor the case.

Troubleshooting

If the unit seems to be malfunctioning, check the following table
before taking it to your dealer.

Issue

The POWER LED
does not turn green
when the toggle
switch is set to a
position other than
“OFF.”

The measuring
instrument is not
displaying a current
value.

The measuring
instrument is dis­playing a value
even though noth­ing is being mea­sured.

Repair

Do not attempt to modify, disassemble or repair the
device; as fire, electric shock and injury could result.

Transporting Precautions

When sending the device for repair, remove the batteries and
pack carefully to prevent damage in tra nsit. Incl ude cushion ing
material so the device cannot move within the package. Be sure
to include details of the problem. Hioki cannot be responsible for
damage that occurs during shipment.

Storage

To avoid corrosion and damage to this device from battery
leakage, remove the batteries from the device if it is to be
stored for a long time (1 week or more).

Disposal

When disposing of the unit, do so in accordance with all appli­cable local regulations.

Items to check
/issue cause

• If the LED does not
light up, there is no
battery power
remaining.

• If the LED turns
red, there is only a
little battery power
remaining.

Is the BNC connec­tor securely con­nected to the
instrument?

Has zero-adjustment
been performed for
the unit?

Solution

• Replace the batteries.

• Replace the batteries
soon.

If the instrument does not
display the value even
when the sensor unit is
properly connected, have
the sensor unit and clamp
sensor repaired.

If the instrument fails to
display a value close to 0 A
even after zero-adjust­ment is performed, have
the sensor unit and clamp
sensor repaired.

Overview

Supply power to the unit.
(Battery or AC adapter)

Select a range.
Perform zero-adjustment.

Connect the clamp sensor to the measure­ment target.

Remove the clamp sensor after measurement
is complete.

1

2

3

4

5

6
7

Connect to the measuring
instrument.

Memory HiCorder

PW3198
Power Quality
Analyzer

Sensor Unit

Front

POWER LED

Green: Power on
Red: Low battery
Off: Power off

Back

0 ADJ knob

Rotate left or right to
adjust the connected
sensor’s zero point.

Toggle switch

H : HIGH range
L : LOW range
OFF: Powering off
The range level var­ies with the clamp
sensor in use.

AC adapter
connector

Sensor connector

Connecting the
clamp sensor.

BNC connector

Connecting to mea­suring instrument.

Battery cover

Remove the screw
and install the bat­teries.

1

1. Place the toggle switch in the
“OFF” position.

2. Using a Phillips head screwdriver,
remove the battery cover screw
and remove the battery cover.

3. Insert the batteries, exercising care
to orient them properly.

4. Reattach the battery cover and
tighten the screw with the screw­driver.

1. Insert the AC adapter plug in to
the unit’s AC adapter jack.

2. Plug the AC adapter into an out­let.

2

Wide part on top

1. If the included connector cover is
attached to the clamp sensor’s
output connector, slide it up the
cable.

2. Gripping the black part of the con­nector, insert it into the jack.

Orient the connector so the wide
part is facing up and insert it until
you hear it click into place.

3. Return the connector cover.

Clamp sensor
output connector

Top of sensor uni t

Connector
cover

1. Slide the connector cover up the
cable.

2. Grip the metal part of the connec­tor and pull it out.

3

1. Align the groove on the

unit’s BNC connector
with the connector
guides on the instru­ment’s jack and insert the
connector.

2. Turn the connector clock-

wise to lock it in place.

(To disconnect the connec­tor, turn it counterclockwise
to unlock it and then pull.)

Lock

BNC
connector
groove

Connector guides
on instrument jack

1

2

4

Instruments that allow the clamp sensor to be selected by
model number (PW3198, some Memory HiCorders, etc.)

1. Select the clamp sensor model number and range on the

instrument’s setting screen.

Version 1.05 and older PW3198 models will not display the
unit’s model number. Check Hioki’s website for instructions
on how to upgrade your instrument.

2. Select the unit’s range so that it matches the instru-

ment’s settings.

Instruments that do not allow the clamp sensor to be selected
by model number

5

1. Ensure that the connected

clamp sensor has not been
placed around a conductor.

2. Holding the unit in one hand,

rotate the zero-adjustment
knob with your other hand un­til the measured value on the
instrument’s display indicates
a value near 0 A.
The zero-adjustment knob is
designed to be difficult to turn
so that you do not inadver­tently operate it after perform­ing zero-adjustment.

0.00 A

6

7

Pre-Operation Inspection

Connecting the AC adapter

• The CT6590 Sensor Unit is used to connect a CT9691,
CT9692, or CT9693 Clamp-on AC/DC Sensor to a measur­ing instrument, which may be a PW3198 Power Quality Ana­lyzer, Memory HiCorder, oscilloscope, or other device.

• Current is measured with the clamp sensor, which converts
the reading and outputs it as a voltage signal.

• To perform measurements, connect the sensor unit to the
instrument and correct any output deviation with the unit’s
zero-adjustment knob.

Perform the following inspection before starting measuremen t:

Inspection step

No.

(Continue inspection if OK.)
Is there any wiring break in the

unit or clamp sensor connectors

1

or at the base of the connectors
on the sensor side?

Is there any damage to insula-

2

tion on unit or clamp sensor
cables? Is any metal exposed?

Is there any damage to the unit

3

or clamp sensor?
(When using the AC adapter) Is

4

there any damage to the AC
adapter?

Does the POWER LED turn
green when the toggle switch is

5

set to a position other than
“OFF”?

Corrective action
(Perform when unit fails
inspection.)

You will not be able to per­form proper measurement.
Cease use and contact your
dealer.

If the LED turns red, there is
little battery power remain­ing. Replace the batteries
soon.
If the LED does not turn on
at all, there is no battery
power remaining. Replace
the batteries.

Measurement Procedures

Supply power to the unit.

The unit can be powered using batteries (which are inclu ded) or
an AC adapter (option). Use the AC adapter when operating the
unit continuously for an extended period of time.

Installing (or Replacing) the batteries

Before turning the device on, make sure the supply volt­age matches that indicated on the AC adapter. Connec­tion to an improper supply voltage may damage the
device or AC adapter and present an electrical hazard.

Avoid using an uninterruptible power supply (UPS) or DC/AC
inverter with rectangular wave or pseudo-sine-wave output to
power the instrument. Doing so may damage the instrument.

Connect the AC adapter using the following procedure:
Use either the specified HIOKI AC adapter.

Connect a clamp sensor to the sensor unit.

To avoid damaging the output cable, grasp the connector, not
the cable, when unplugging the cable.

Use only the specified clamp sensors. Using a non-specified
instrument may result in damage to the instrument or the unit.

Select a range with the toggle switch.

Referring to the “Output rates and ranges” table, select the best
range for the instrument. Volt age will be output relative to the in­put current. For example, if you select the L range for the
CT9691, 100 mV will be output for 10 A of current.

Names of Parts

5678

• After replacing the batteries, replace the battery cover
and screws before using the device.

• Battery may explode if mistreated. Do not short-circuit,
recharge, disassemble or dispose of in fire.

• Handle and dispose of batteries in accordance with
local regulations.

• Do not mix old and new batteries, or different types of batter­ies. Also, be careful to observe battery polarity during instal­lation. Otherwise, poor performance or dam age from battery
leakage could result.

• Replace batteries only with the specified type.

• When the POWER LED turns red, ther e is little batte ry power
remaining. Replace the batteries soon.

• When using the AC adapter and batteries at the same time, the
AC adapter takes precedence. Switching between the AC
adapter and battery power during measurement may cause in­terference in the output.

Install the batteries using the following procedure:
(Required items: two LR6 alkaline batteries, One Phillips head
screwdriver)

Removing the output connector

Connect the sensor unit to the measuring instrument.

• When disconnecting the BNC connector, be sure to release
the lock before pulling off the connector. Forcibly pulling the
connector without releasing the lock, or pulling on the cable,
can damage the connector.

• To avoid damage to the device, do not short-circuit the con­nector and do not input voltage to the connector.

Connect the sensor unit’s BNC connector to the clamp sensor
connector on the measuring instrument.

Output rates and ranges

CT9691 sensor CT9692 sensor CT9693 sensor

Range (f.s.) 100 A 200 A 2000 A

H

Output rate 1 mV/A 1 mV/A 0.1 mV/A
Range (f.s.) 10 A 20 A 200 A

L

Output rate 10 mV/A 10 mV/A 1 mV/A

Output (f.s.) 100 mV 200 mV 200 mV

Perform zero-adjustment.

Before starting measurement, corr ect any output deviations with
the unit’s zero-adjustment knob. If the instrument fails to display
a value close to 0 A even after zero-adjustment is performed,
have the sensor unit and clamp sensor repaired.

Connect the clamp sensor to the measurement target.

Refer to the clamp sensor’s instruction manual.

Remove the sensor after measurement is complete.