KEW 8135 AC Current Sensor Instruction Manual

8135 AC Current Sensor
Instruction Manual FLEXIBLE CLAMP SENSOR
POWER CLAMP SENSO
KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.

Safety warnings

This clamp sensor has been designed and tested according to IEC61010-1: Safety Requirements for Electronic Measuring Apparatus. and delivered in the best condition after passing quality control tests. This instruction manual contains warnings and safety rules which have to be observed by the user to ensure safe operation of the clamp sensor and to maintain it in safe condition. Therefore. read through these operating instructions before starting to use the clamp sensor.
WARNING

• Read through and understand instructions contained in this manual before starting to use the clamp sensor.
• Keep the manual at hand to enable quick reference whenever necessary.
• The clamp sensor is to be used only in its intended applications.
• Understand and follow all the safety instructions contained in the manual. It is essential that the above instructions are adhered to. Failure to follow the above instructions may cause injury, clamp sensor damage and/or damage to equipment under test. KYORITSU is not liable for any damage resulting from the mishandling of the clamp sensor.

The symbol indicated on the clamp sensor. means that the user must refer to the related parts in the manual for safe operation of the clamp sensor. It is essential to read the instructions wherever the symbol appears in the manual.
DANGER: is reserved for conditions and actions that are likely to cause serious or fatal injury.
WARNING: is reserved for conditions and actions that can cause serious or fatal injury.
CAUTION: is reserved for conditions and actions that can cause injury or instrument damage.
DANGER

• Do not make measurements on a circuit in which electrical potentials exceeding the following values exist: 300 V or higher in CAT IV environment and 600 V or higher in CAT III or lower environment.
• Use the sensor only as specified: otherwise. the protection supplied by the sensor can be compromised and damage itself or lead to a serious accident. Always verify the proper operation on a well-known power source before starting to use the sensor.

WARNING

• Stop using the sensor if any visible damage such as cracks on the circuit box or clamp part. or exposed internal metal parts are found.
• Do not disassemble. install substitute parts or make any modification to the clamp sensor. Return the clamp sensor to your local KYORITSU distributor for repair or re-calibration El case of suspected faulty operation.
• Do not use the clamp sensor if the sensor or your hand is wet: otherwise. electrical shock accident may occur.
• Comply with the local and national safety codes and use the protective gears to prevent shock hazard.

CAUTION

• Do not step on or pinch the cord: it may damage the jacket of the cable.
• Do not expose the clamp sensor to direct sunlight. high temperature. humidity or dew. It may cause deformation or insulation degradation and cannot meet the original specification.
• Not to give shocks, such as vibration or drop, which may damage the clamp sensor, during transit or use.
• Use a damp cloth with water or neutral detergent for cleaning the clamp sensor. Do not use abrasives or solvents.
• This clamp sensor is not designed to be dust or waterproof. Do not use it dusty places or where the clamp sensor is likely to be wet. It can damage the sensor.
• Never pinch foreign matters or give vibrations to the joint part of the clamp sensor: otherwise. the joint part may be damaged and lead to inaccurate measurements.
• Do not bend or pull the root of the cable to prevent breaks in the cable.
• Never apply a current exceeding the measuring range for a long time It may damage the clamp sensor.
• Do not connect/remove the connectors while the connected devices are on or clamping onto the conductor under test. Otherwise, the connected device or clamp sensor may be damaged.
• Accurate measurement may not be obtained in the vicinity of strong magnetic fields such as transfam ers. high-current circuits or wireless machines.

Meaning of symbols on the clamp sensor:

| User must refer to the explanations in the instruction manual for safety reasons.
---|---
****| Clamp sensor with double or reinforced insulation
| Do not use for, attach to or detach from un-insulated hazardous live conductors, which may render electric shock, electric burn, or arc flash.
| AC
| Crossed-out wheel bin symbol (according to WEEE Directive: 2002/ 96/ EC) indicating that this electrical product may not be treated as household waste, but that it must be collected and treated separately.

Measurement Category:
To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as 0 to CAT IV, and called measurement categories. Higher-numbered categories correspond to electrical environments with greater momentary energy, so a measuring instrument designed for CAT III environments can endure greater momentary energy than one designed for CAT II.
0 (None, Other) : Circuits which are not directly connected to the mains power supply.
CAT II : Electrical circuits of equipment connected to an AC electrical outlet by a power cord. C
CAT III : Primary electrical circuits of the equipment 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 over-current protection device (distribution panel).

Features

• This is a clamp sensor which can measure AC current up to 50 A.
• Flexible and lightweight is achieved by using air core coil for the sensor.

Clamp sensor layout

Pin assignment for output terminal

* Pin assignment at the connecting terminal of measuring instrument is symmetrical to above figure.

• Output signal passes between 3 and 5 of output terminal.
• This clamp sensor drives power via the output cable. Power supply of +3.0 to +5.5V is required between 1 and 3 of output terminal and -3.0 to -5.5V is required between 2 and 3.

Specifications

KEW 6315/ 6315WHM Power Quality Analyzer KEW 5010 Logger (for current)
KEW 5020 Logger (for current & voltage)
Rated current| 50 AAC
Output voltage| 500 mV AC/ 50 AAC (10 mV/ A)
Measuring range| 0 — 50 AAC rms (92 A Peak)
Accuracy (sine wave input)| ±1.0%rdg±0.5 mV (45 — 65 Hz) (0 — 50 A)
±1.5%rdg±0.5 mV (40 — 300 Hz) (0 — 20 A)
±1.5%rdg±0.5 mV (300 — 1 kHz) (0 — 5 A)
Accuracy (crest factor input)| ±1.0%rdg±0.5mV (45 Hz — 65 Hz)
(CF≤2.0, 0 – 92 A peak)
(2.0<CF≤CF2.5, 0 – 50 A peak)
(2.5<CF≤CF 3.0, 0 – 15 A peak)
Phase characteristics| 45 — 65 Hz: within ±3°
40 — 1 kHz: within ±4°
Current consumption
(at power supply ±5 V)| 6 mA (max)
Temp. & Hum. range (guaranteed accuracy)| 23±5°C
Relative humidity 85% or less (no condensation)
Operating Temp. & Hum. range| -10 to 50°C
Relative humidity 85% or less (no condensation)
Storage Temp. & Hum. range| -20 to 60°C
Relative humidity 85% or less (no condensation)
Max allowable input| 65 AAC (continuous)
Output impedance| 100 Ω or less
Environmental condition| Altitude up to 2000 m, In-door use
Applicable standards| IEC61010-1
IEC61010-2-032
CAT III (600 V ), CAT IV (300 V ), Pollution degree 2
IEC 61326-1 (EMC), EN63000
Withstand voltage| 5160 V AC rms (50/ 60 Hz)/ 5 sec.
Between circuit and clamp sensor
Insulation resistance| 50 MΩ or more/ 1000 V
Between circuit and clamp sensor
Measurable conductor size| 0 75 mm (max)
Cable length| Approx. 2.7 m: between circuit box and clamp sensor
Approx. 0.2 m: between circuit box and output terminal
Output terminal| MINI DIN 6PIN
Weight| Approx. 170 g
Accessories| Carrying bag (MODEL9095)
Instruction manual
Cable marker No.1 – No.4 (2pcs each)

Operating instructions

DANGER

• Never make measurements on a circuit in which electrical potentials exceeding the following values exist: 300 V or higher in CAT IV and 600 V or higher in CAT III or lower environment.

**** CAUTION

• The measurable conductor size is 75 mm in diameter (max). Make sure that the clamp sensor is firmly closed for accurate measurement.
• When disconnecting the output terminal from the measuring instrument, do so by removing the plug and not by pulling the cable.

Note

• This sensor has been specially designed and dedicated to our Power meter KEW 6305, Power quality analyzer KEW 6315/ 6315WHM, and Logger KEW 5010/ 5020. It cannot be used with the other our products such as KEW 5050.

6-1 Measurement method
(1) Connect the output terminal to the input terminal on the measuring instrument.
(2) Power on the measuring instrument.
(3) Unlock the Joint according to the following illustrations.(4) Clamp onto one conductor to be tested. Locate the conductor as shown below while observing the direction of the Guide arrow mark – indicating the current flowing direction – marked on the Joint of the sensor to synchronize the phases of the current under test and of the output voltage.

Position the conductor to be tested as illustrated above.

(5) Ensure that the joint part of the clamp sensor is firmly locked.

• Joint part may be unlocked and disconnected if excessive force is applied to.
• Clamp onto just one conductor; measurements cannot be made when clamping single-phase (2-wire) or three-phase (3-wire) at the same time.

6-2 Connecting with KEW 6305/KEW 6315/ KEW 6315WHM
Before connecting this sensor with KEW 6305 or KEW 6315, confirm that the internal firmware version is later than the one listed in the following table; otherwise, this sensor cannot be used with. The latest firmware is available on our website.

For the detailed settings of the clamp sensor, please refer to the instruction manual for the applicable model.
6-3 Compatiblility with KEW 6305
When using this sensor with KEW 6305, confirmm the serial no. of the tester is later than that is listed in below table.

If your KEW 6305 has a former serial no. than the one listed above, accuracy isn’t guaranteed when two or more KEW 8135 are connected with KEW 6305.

Storage

Organize the cable and the sensor as shown below and store them in the carrying bag. DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations.

KYORITSU ELECTRICAL INSTRUMENTS WORKS, LTD.
2-5-20, Nakane, Meguro-ku,
Tokyo, 152-0031 Japan
Phone: +81-3-3723-0131
Fax: +81-3-3723-0152
Factory: Ehime, Japan
www.kew-ltd.co.jp

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