HIOKI CT6862 AC/DC Current Sensor Instruction Manual

HIOKI CT6862 AC/DC Current Sensor

www.hioki.com

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Edited and published by HIOKI E.E. CORPORATION
Printed in Japan

• Contents subject to change without notice.
• This document contains copyrighted content.
• It is prohibited to copy, reproduce, or modify the content of this document without permission.
• Company names, product names, etc. mentioned in this document are trademarks or registered trademarks of their respective companies.

Europe only

• EU declaration of conformity can be downloaded from our website.

• Contact in Europe:
  HIOKI EURPOPE GmbH
  Helfmann-Park 2, 65760 Eschborn, Germany

• Email:

Warranty
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 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 CT6862, CT6863, CT6862-10, CT6863-10, CT6862-05 and CT6863-05 AC/DC Current Sensor.To obtain maximum performance from the de-vice, please read this manual first, and keep it handy for future reference.

Usage with Other Hioki Products
This device 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 op-erate according to the specifications, contact your dealer or Hio-ki representative.

Overview
The CT6862,CT6862-05 (up to 50 A) and CT6863,CT6863-05 (up to 200 A) are the feed-through current sensors designed to measure AC/DC current with high precision. Featuring good fre-quency characteristics (amplitude & phase) and good temperature characteristics (sensitivity & offset), the sensor is also suitable for high-precision power measurements. The Model CT6862-10 and CT6863-10 is a current sensor that supports even higher-accuracy power measurements when used in combination with the Model 3390-10 Power Analyzer.

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 fol-lowing safety precautions.

DANGER
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. However, 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 Symbol

• 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.

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

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

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

NOTE
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 environments, 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 installations) connected directly to the distri-bution 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 higher- numbered 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： -30 to 85°C, 80%RH or less (non- condensation)
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)

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

Preliminary Checks
Before using the device the first time, verify that it operates normally to ensure that the no damage occurred during storage or shipping. If you find any damage, contact your dealer or Hioki representative.

DANGER
This device should only be connected to the secondary side of a breaker, so the breaker can prevent an acci-dent 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.

WARNING
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, short-circuiting 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 short circuits or electric shock.

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

• 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.

Specifications

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)

A bout the CT6862-10 and CT6863-10
T he CT6862-10 and CT6863-10 specifications are the same as the following CT6862 and CT6863 specifications, respectively. For more information about specifications when used with the 3390-10, see the 3390-10 instruction manual. The specs of the CT6862-05 are the same as those of the CT6862 except the output connector and options. CT6863 and CT6863-05 are similar.

• Operating Environment Indoors, Pollution degree 2, altitude up to 2000 m (6562-ft.)
• Operating Environment Indoors, Pollution degree 2, altitude up to 2000 m (6562-ft.)
• Operating temperature and humidity -30°C to 85°C (-22°F to 185°F), 80%RH or less (non-condensation)
• Storage temperature and humidity -30°C to 85°C (-22°F to 185°F), 80%RH or less (non-condensation)
• Maximum rated voltage to earth  1000 V AC/DC (50 Hz/60 Hz), Measurement category III, Anticipated transient overvoltage 8,000 V
• Applicable standards Safety : EN61010
• EMC : EN61326
• Product warranty period 3 years
• Rated current CT6862: 50 A AC/DC, CT6863: 200 A AC/DC
• Output voltage CT6862: 2 V/ 50 A, CT6863: 2 V/ 200 A
• Maximum input current Within a derating
• Output resistance 50 Ω (±5%)
• Temperature and humidity range of guaranteed accuracy 0°C to 40°C (32 to 104°F), 80%RH or less
• Period of guaranteed accuracy 1 year Guaranteed accuracy period from adjustment made by Hioki 1 year

Accuracy
Sine wave input, conductor in center position, using with Model 9555-10, Measuring instrument having 1 MΩ or higher input resistance 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)

CT6862

Combined accuracy and conditions
Combined accuracy = Accuracy of CT6862(-05) or CT6863(-05) + Accuracy of combined product (Power factor: 1)

05
CT9555,CT9556,CT9557 Sensor Unit1| CT9900| －
PW3390 Power Analyzer| CT9900| －
PW6001 Power Analyzer| CT9900| －
9602 AC/DC Clamp Input Unit2| －| CT9901
3334-10 AC/DC Power HiTester| －| CT9901
8940 F/V Unit*34| 9705 + 9318| CT9901 + 9705 + 9318
8971 Current Unit*3| 9318| CT9901 + 9318
9555-10 Sensor Unit| －| CT9901
3390,3390-10 Power Analyzer| －| CT9901

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. Add ± 0.1% rdg. to the combined accuracy.
3. The sensor recognition methods vary according to the Memory HiCorder settings (refer to the manuals of Memory HiCorder to be connected).
4. CT6862, CT6862-10, and CT6862-05 cannot be used.

Derating
CT6862: Frequency

CT6862: Temperature

CT6863: Frequency

CT6863: Temperature

Names of Parts

Front

Top

Measurement Procedure

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

CAUTION
To prevent damage to the sensor and connected instrument, 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 re-lease the lock before pulling off the connector. Forcibly pulling the connector without releasing the lock, or pulling on the cable, can damage the connector.

NOTE
The sensor’s signal output circuit is protected by a resistor (out-put 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.
When the device is used with a wattmeter, follow the wiring instructions provided with the wattmeter.

NOTE:
Make sure to pass only one conductor through. Single-phase (2-wire) or three- phase (3-wire) cables conducted together will not produce any reading.

Ground-shielded conductors cannot be accurately measured.

Maintenance Service

WARNING
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 gaso-line, 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 ship-ping, and include a description of existing damage. We can-not accept responsibility for damage incurred during shipping.

Options

• 9705 Conversion Cable1, 9318 Conversion Cable1,
• CT9900 Conversion Cable1, CT9901 Conversion Cable2
• The Conversion Cable makes it possible to connect to and use with products that cannot be directly connected to the device.(Refer to “Connection example”)(No figures are added to the accuracy.)
• CT9902 Extension Cable2(5 m), CT9903 Extension Cable1 (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 ≦ f3 ≦ 1 kHz)
: ±0.5% rdg. (1 kHz < f3)

Phase accuracy : ±(0.1 × f3 kHz)° (1 kHz < f3)

1. For CT6862(-10)/CT6863(-10)
2. For CT6862-05/CT6863-05 3: frequency

Connection example

NOTE
Also refer to the Instruction manual for attached device.

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