Hioki CT6865, CT6865-05 Instruction Manual

CT6865, CT6865-05

AC/DC CURRENT SENSOR

Instruction Manual

EN

Sept. 2018 Revised edition 5
Printed in Japan
CT6865A981-05 18-09H

Warranty

Warr

anty 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 three (3) years 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 CT6865, CT6865-05
AC/DC Current Sensor. To obtain maximum performance from
the device, please read this manual first, and keep it handy for
future reference.

Usage with Other Hioki Products

The CT6865 is used in connection with a dedicated instrument
(Hioki). See “Specifications” for details.

Inspection

When you receive the device, inspect it carefully to ensure that
no damage occurred during shipping. In particular, check the
accessories and cables. If damage is evident, or if it fails to op­erate according to the specifications, contact your dealer or Hio­ki representative.

Overview

The CT6865/CT6865-05 is a feed-through current sensor de­signed to measure AC/DC currents up to 1000 A with high pre­cision. Featuring good frequency characteristics (amplitude &
phase) and good temperature characteristics (sensitivity & off­set), the sensor is also suitable for high-precision power mea­surements.

Safety Information

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 printed 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 a double-insulated device.

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

Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.

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

Other Symbol

Indicates a prohibited action.

Measurement categories

This device complies with CAT III safety requirements.
To ensure safe operation of measurement devices, IEC 61010
establishes safety standards for various electrical environ-

ments, categorized as CAT II to CAT IV, and called measure­ment categories.

CAT II: 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.

CAT III:Primary electrical circuits of heavy equipment (fixed installa-

tions) connected directly to the distribution panel, and feeders
from the distribution panel to outlets.

CAT IV: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 de­vice in an environment
designated with a higher­numbered category than
that for which the device 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.

Instrument Installation

Operating temperature and humidity: -35 to 85°C, 80%RH or less (non-condensa-

tion)

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 high levels
of particulate dust

Subject to vibration

In the presence of corro­sive or explosive gases

Exposed to strong elec­tromagnetic fields
Near electromagnetic
radiators

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

Names of Parts

Front

12.5

(Unit: mm)

Through window

Cable

Top

Output connector

Output connector
(model CT6865-05)

Nut

Current direction
indicator

Operating Precautions

Follow these precautions to ensure safe operation and to obtain
the full benefits of the various functions.

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 dealer or Hioki
representative.

• This device should only be connected to the secondary
side of a breaker, so the breaker can prevent an acci­dent if a short circuit occurs. Connections should
never be made to the primary side of a breaker,
because unrestricted current flow could cause a seri­ous accident if a short circuit occurs.

• The maximum rated voltage between input terminals
and ground is 1000 V DC/AC. Attempting to measure
voltages exceeding 1000 V with respect to ground
could damage the device and result in personal injury.

• Before using the device, make sure that the insulation
on the cable is undamaged and that no bare conduc­tors are improperly exposed. Using the device in such
conditions could cause an electric shock, so contact
your dealer or Hioki representative for repair.

• In order to prevent electric shock and short-circuit
accidents, shut off the power to the line to be mea­sured before connecting this device.

• Ensure that the input does not exceed the maximum
input voltage or current to avoid device damage, short­circuiting and electric shock resulting from heat build­ing.

• Avoid contact between the cable and the measured line
in order to protect the cable from damage. Any contact
can cause the device to malfunction and lead to short­circuits or electric shock.

• Do not use the device where it may be exposed to oil,
chemicals, or solvents. Contact with these substances
may cause cracking in the device, resulting in damage
or electric shock.

• This device is not drip-proof. Water droplets on the connec­tor may result in malfunctions.

•

Do not slant the device or place it on top of an uneven
surface. Dropping or knocking down the device can
cause injury or damage to the device.

• Avoid stepping on or pinching cables, which could damage
the cable insulation.

• The cable is hardened under the 0 degree or colder environ­ment. Do not bend or pull it to avoid tearing its shield or cut­ting cable.

• Keep the cables well away from heat sources, as bare con­ductors could be exposed if the insulation melts.

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

• When the power to lines to be measured is turned on or off,
a current flowing through the lines can exceed considerably
the maximum allowable current of the device. This could re­sult in damage to the device. Make sure that there is not any
over-current.

• Do not apply any current through the lines to be measured
with the device turned off. This could result in damage to the
device.

1234

Specifications

Output connector

Accessories Instruction manual, Mark band 6 (3sets)

CT6865 : Hioki PL23 (male)
CT6865-05 : Hioki ME15W (male)

Measurement Procedure

Maintenance and Service

Accuracy

f.s.: maximum display value or scale length (Rated current)
rdg.: reading value (The value currently being measured and indicated on the

measuring instrument)

The specs of the CT6865-05 are the same as those of the CT6865 except the
output connector and options.

Operating Environment Indoors,

Operating temperature
and humidity

Storage temperature
and humidity

Maximum rated volt­age to earth

Applicable standards

Product warranty
period

Rated current 1000 A AC/DC

Output voltage 2 V/1000 A

Maximum input current

Output resistance 50 Ω (±5%)

Temperature and
humidity range of guar­anteed accuracy

Guaranteed accuracy
period

Guaranteed accuracy
period from adjust­ment made by Hioki

Accuracy
Sine wave input; Conductor at center position; Connected with Model 9555-10; Not
including each effect; Measuring instrument that has an input resistance of 1 MΩ or
higher

Amplitude accuracy (Defined at the rated value or less and within the derating curve;
The accuracy defined for the frequency range of DC < f < 5 Hz is the design value)

Phase accuracy (Defined at the rated value or less and within the derating curve;
The accuracy defined for the frequency range of DC < f < 10 Hz is the design value)

Frequency Amplitude Phase

DC

DC < f < 16 Hz

16 Hz ≤ f ≤ 66 Hz

66 Hz < f ≤ 100 Hz

100 Hz < f ≤ 500 Hz

500 Hz < f ≤ 1 kHz

1 kHz < f ≤ 5 kHz

5 kHz < f ≤ 10 kHz

10 kHz < f ≤ 20 kHz

Noise 5 mVpp or less (100 kHz or less)

Temperature coeffi­cient

Effect of conductor
position

Effect of external elec­tromagnetic field

Effect of magnetic 50 mA or less (Scaled value, after 1000 A DC input)

Effect of radiated radio­frequency electromag­netic field

Effect of conducted
radio-frequency elec­tromagnetic field

Measurable conductor
diameter

Supply voltage

Power supply capacity

Rated power

Dimensions

Mass Approx. 980 g (34.6 oz.)

Cable length Approx. 3 m

Pollution degree 2,

-30°C to 85°C (-22°F to 185°F), 80%RH or less (non-condensation)

-30°C to 85°C (-22°F to 185°F), 80%RH or less (non-condensation)

1000 V AC/ DC (50 Hz/60 Hz), Measurement category III,
anticipated transient overvoltage 8000 V

Safety : EN61010
EMC : EN61326

3 year

1200 A AC/DC (1800 A peak continuous, 100 Hz or less, 40°C or
less, otherwise within derating range)

0°C to 40°C (32 to 104°F), 80%RH or less

1 year

1 year

± 0.05%rdg. ± 0.01%f.s.

± 0.10%rdg. ± 0.02%f.s. ± 0.3°

± 0.05%rdg. ± 0.01%f.s. ± 0.2°

± 0.5%rdg. ± 0.02%f.s. ± 0.5°

± 1%rdg. ± 0.02%f.s. ± 2.0°

± 5%rdg. ± 0.05%f.s. ± 3.0°

± 5%rdg. ± 0.05%f.s.

± 15%rdg. ± 0.1%f.s.

± 30%rdg. ± 0.1%f.s.

-30°C to 0°C and 40°C to 85°C
Amplitude sensitivity : ± 0.01%rdg./°C or less
Offset voltage : ± 0.01%f.s./°C or less

± 0.05%rdg. or less
(at 1000 A input, 50 Hz/60 Hz, using with the wire 20 mm diameter)

200 mA or less
(Scaled value, In a DC or 60 Hz magnetic field of 400 A/m)

1%f.s. at 10 V/m

0.5%f.s. at 3 V

φ36 mm (1.42”) or less

± 11 V to ± 15 V (Tracking)
± 300 mA or less

(1000 A/55 Hz measurement, with ± 12 V power supply)

7 VA or less
(1000 A/55 Hz measurement, with ± 12 V power supply)

Approx. 160W
(Approx. 6.30”W

× 112H × 50D mm (excluding protrusions, cable)

up to 2000 m (6562-ft.) ASL

–

–

–

–

× 4.41”H × 1.97”D)

CT9900 Conversion Cable

For CT6865

Options

For CT6865-05

CT9903 Extension Cable

9318 Conversion Cable

9705 Conversion Cable

CT9901 Conversion Cable

CT9902 Extension Cable

Combined accuracy and conditions

Combined accuracy = Accuracy of CT6865(-05) + Accuracy of combined product (Power
factor: 1)

Combined product

CT9555,CT9556,CT9557

Sensor Unit

Power Analyzer

Power Analyzer

AC/DC Clamp Input Unit

AC/DC Power HiTester

F/V Unit

Current Unit

Sensor Unit

3390,3390-10

Power Analyzer

*1

: Add the sensor unit output accuracy to the combined accuracy when one of the

addition functions, that is, RMS output or TOTAL OUTPUT, is used.

*2

: The CT ratio need not be set for the CT6865-05.

*3

: Add ±0.1% rdg. to the combined accuracy.

*4

: The sensor recognition methods vary according to the Memory HiCorder settings (refer

to the manuals of Memory HiCorder to be connected).

Derating

Frequency

1200

Current [A]

PW3390

PW6001

9602

3334-10

8940

8971

9555-10

1000

500

0

*1

*4

*4

CT ratio

setting

– CT9900 –

*2

2

*2

2

*3

2 – CT9901

50 – CT9901

2 9705 + 9318

2 9318 CT9901 + 9318

– – CT9901

2 – CT9901

100 1k1 10 10kDC 100k

Required option

CT6865 CT6865-05

CT9900 –

CT9900 –

CT9901 + 9705 +

9318

50A

20k

Frequency [Hz]

Temperature

1200

1000

500

Current [A]

0

-20

0 20 40 60

+85℃-30

Temperature [℃]

In order to prevent electric shock and short-circuit acci­dents, shut off the power to the line to be measured
before connecting this device.

• To prevent damage to the connected instrument and sen­sor, never connect or disconnect a sensor while the power
is on.

• When the connected instrument’s power is turned off, do not
apply current to the sensor. Doing so may damage the de­vice.

• When disconnecting the output 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.

The sensor's signal output circuit is protected by a resistor (out­put resistor). A digital multimeter used for monitoring should
have high input resistance (recommended minimum: 1 MΩ).

Wiring

Make sure the direction of the arrow on the case matches the
direction of the current flow, as shown in Figure 1. If they are ori­ented incorrectly, the output signal from the sensor will be re­versed

Figure 1. Wiring example

Hi

Arrow on case
(Current direction

SOURCE LOAD

indicator)

I

Lo

When the CT6865 is used with a wattmeter, follow the
wiring instructions provided with the wattmeter.

• Make sure to pass only one conductor through. Single-

phase (2-wire) or three-phase (3-wire) cables

conducted to-

gether will not produce any reading.

OK

• Ground-shielded conductors cannot be accurately measured.

Shielded

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

• 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, ether, ketones, thinners or gaso­line, as they can deform and discolor the case.

• If the device seems to be malfunctioning, contact your dealer
or Hioki representative. When returning the device for repair,
pack the device so that it will not sustain damage during ship­ping, and include a description of existing damage. We do not
take any responsibility for damage incurred during shipping.

Options

9705 Conversion Cable

CT9900 Conversion Cable

The Conversion Cable makes it possible to connect to and use­with products that cannot be directly connected to the device.
(Refer to “Connection example”).(No figures are added to the
accuracy.)

CT9902 Extension Cable
(5 m)

• Single sensor cable, 5 m extension (max. 10 m extension)

• Up to two of the Extension Cable available (If three or more
extension cables are connected to the device, its
performance is not guaranteed)

• Add the following values to each of the accuracy per cable:
Amplitude accuracy : ±0.1% rdg. (DC ≦ f

Phase accuracy : ±(0.1 × f

*1

: For CT6865, *2: For CT6865-05 *3: frequency

*1

, 9318 Conversion Cable*1,

*1

, CT9901 Conversion Cable

*2

(5 m), CT9903 Extension Cable

*3

≦ 1 kHz)

: ±0.5% rdg. (1 kHz < f

*3

kHz) ° (1 kHz < f*3)

*3

)

*2

Connection Example

Host instrument

CT6865

9318

9705

CT9901

9318

CT9900

CT6865-05

Also refer to the Instruction manual for attached device.

3390, 3390-10,
9555-10,

9602 (3193-10),
3334-10

8971

(MR8847,MR8827,

MR8740)

8940 (8860-50)

PW6001,PW3390,

CT9555,CT9556,

CT9557

*1

5 678