KYORITSU KEW 8177 Clamp Sensor Instruction Manual

KEW 8177 Clamp Sensor
Instruction Manual lor Leakage Current Clamp Sensor
CLAMP SENSOR Series
KEW 8177/8178
KYORITSU ELECTRICAL
INSTRUMENTS WORKS, LTD.

Safety warnings

OKEW 8177/ 8178 lor leakage clamp sensor (Sensor) has been designed, manufactured and tested according to IEC 61010 Safety requirements for Electronic Measuring apparatus, and delivered in the best condition after passing quality control tesfs. This instruction manual contains warnings and safefy rules which have to be abserved by the user to ensure safe operation of the Sensor and to maintain it in safe condition. Therefore, read through these operating instructions before using the Sensor.

WARNING

• Read through and understand instructions contained in this manual before starting to use the Sensor
• Keep the manual at hand to enable quick reference whenever necessary.
• The Sensor is to be used only In ts 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 and or damage the  Sensor
The symbol **marked on the Sensor, means that the user must refer to the related parts in the manual for Safe operation of the Sensor. It is essential to read the instructions wherever A symbol appears in the manual
DANGER is reserved for conditions and actions that are likely to cause serious or fatal injury.
WARNING : reserved for conditions and actions that can cause serious or fatal Injury.
CAUTION :is reserved for conditions and actions that can ‘cause minor injury or damage the Sensor.
DANGER**

• Do not attempt to make measurement in the presence of flammable gasses. Otherwise, the use of the Sensor may cause sparking, which can lead to an explosion
• Wear insulated protective gears to reduce the risks such as electrical shock at the workplace.
• Never make measurement in CAT Il environment if electrical potentials of 300 AC or higher exist n the circuit to be tested.
• Do not exceed the maximum allowable input of any measuring ran,
• The Sensor is to be used only in ts inended applications to ‘conditions.
• Othenwise, safety functions equipped with the Sensor will not work, and Sensor damage or sefious personal injury may occur.
• Verify proper operation on a known source before staring to use the Sensor.
• Do not make measurement when thunder rumbling.
• If the Sensor is in use, stop the measurement immediately and remove the Sensor from the measured object.
• The transformer jaws are designed so as not to short-circuiting the object under test: however, be especially careful about the possible shorting where the measured object has uninsulated conductors.
• Never attempt to use the Sensor f it surface or your hand is wet.

WARNING

• Always keep your fingers and hands behind the barrier on the Sensor to avoid the possible shock hazard
• Never attempt to make any measurement, if any abnormal conditions are noted, such as broken case, and exposed metal parts.
• Do not install substitute parts or make any modification to the
• Return the Sensor to your local distributor for repair or re-calibration in case of suspected faulty operation.

CAUTION

• The Sensor is not dust nor water-proof. Donit use the Sensor at dusty places or to be spattered
• Take suffcient care o avoid shock when handiing the Sensor and also fo prevent foreign substance from being stuck between the transformer jaws.
• Do not step on or pinch the cable to prevent the jacket of cable from being damaged
• Do not bend or pul the cable of the clamp sensor.
• Connect/ disconnect the output terminal without clamping onto a measured conductor.
• Do not expose the Sensor to direct sunlight, high temperature, humidity or dew.
• Never give shocks, such as vibration or drop, which may damage the Sensor
• Use a damp cioth and detergent for cleaning the Sensor. Do not use abrasives or solvents.

Safety symbol

voltage to be tested is below Circuit — Ground-to-Earth voltage against the indicated Measurement Category.
****| 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 O to CAT IV, and called measurement categories. Higher-numbered categories corespond to electrical environments
with greater momentary energy, so a measuring instrument designed for CAT Il environments can endure greater momentary energy than one designed for CAT Il.
Ofione, Oiter) = Circuits which are not directly connected to the mains power supply.
CATII : Electrical circuits of equipment connected to an AC electrical outlet by a power cord.
CATII : Primary electrical circuits of the equipment connected directly to the distribution panel, and feeders from the distribution panel to outlets.
CATIV :The circuit from the service drop to the service entrance, and to the power meter and primary overcurrent protection device (distribution panel). d for CAT Il

Features

• KEW 8177/ 8178 are clamp sensors to measure lor leakage current.
• Provides the best phase characteristics when combined and used with our KEW 5050 lor leakage logger.
• Designed to meet IEC 61010-2-032 (CAT Il Pollution degree 2)

Sensor layout

Barrier: provides protection against electrical shock and ensufing the required minimum air and creepage distances. Always keep your fingers behind the barrier during a measurement

Din plug pin assignment

1. Poy
2. NC (Not connected)
3. GNDpin
4. SCL pin for memory
5. Output signal pin
6. SDA pin for memory

• Above figure shows the pin assignment seeing the clamp sensor from output connector part. The figure of the pin assignment of ‘connection terminal is symmetrical o above figure.
• Pouer to the Sensor s supplied from KEW 5050 via cable. Connect 2 power supply of +5 V across GND pin (n0.3) and Power pin (no_ 1).
• The internal memory stores the information about sensor type, serial no. and phase correction value. The Sensor is automatically detected by KEW 5050″ by its communication funcion
• KEW 5050 is an lor leakage logger which has a reference voltage input terminal and four current input terminals and can measure and record resistive leakage current (lor) up to four systems.
  For its specs and functions, please see the instruction manual for KEW 5050

Operating instructions

DANGER

• The rated ground-to-voltage is CAT Il 300 V. Never make measurement ifthe potential of the circuit under test exceeds 300 V.
• The transformer jaws are designed so as not to shortcircuiting the object under test; however, be especially careful about the possible shorting where the measured object has uninsulated ‘conductors.

CAUTION

• Take sufficent care to avoid shock, vibration or excessive force when handling the Sensor. Otherwise, precisely adjusted transformer jaws will be damaged.
• When ransiormer jaws do not fully close, never try to close them by force, but make them free to move and try again.
• If a foreign substance is stuckin the jaw tips, remove it
• Hold the inserting part (except for the cable) and disconnect the output terminal from the measuring instrument so as not to cause abreak in the cable
• Do not forcibly open the jaws if they are frozen.

Notes:

• The Sensor is dedicated to our “KEW 5050 lor Leakage Logger’ _ When connecting {o our other models, such as KEW 5010/ 5020, the sensor auto-detecting function doesn’t work.
•  Ensure that the transformer jaws are fully dosed while clamping onto a conductor to be tested; otherwise, accurate measurements cannot be taken. See 6. Specification in this manual for maximum conductor size
• Sensitive transformer jaws are used for leakage clamp sensor. Because of the characteristics of split-core type transfomer, it is impossible to eliminate the interference of extemal magnetic field completely. I there is a presence of strong magnetic fieid, use the  Sensor at a distance as far as possible from it. The followings are the typical things which generate magnetic field
  • Conductor fed large current
  • Motor
  • Equipment which has magnet
  • Integrating wattmeter

1. Attach the color markers, supplied with KEW 5050, to clamp sensors for easy recognition. Colors of the marker are harmonized with that of curent input terminals (red: A1, yellow: A2, blue: A3, green: A4)
   

2. Connect the output terminal to the current input terminal on KEW 5050

3. Power on KEW 5050 and wait for a while until the connected sensor is identified.

• Sensor detection can be performed on “Basic setting’ screen. See “6.2 Basic seftings’ in the manual for KEW 5050 for details 4. Connect the clamp sensor and the voltage test lead properly.
  

  5. Ensure that the arrow mark on the clamp sensor points towards Ioad side (towards neutral at earth line measurement). Ensure that the tips of transformer jaws are finnly closed
     

Specifications

Accurcy
(Inputa: sine wave)| ±1.0%rdg ±0.025 mV (40 – 70 Hz)
±4.0%rdg ±0.025 mV (30 – 5 kHz, with inputs of 100mA or more)
Phase characteristics| Within ±1.0°
(45 — 70 Hz while combining with KEW 5050, under the input of 10% or more of KEW 5050 leakage current range)
Current consumption| 8.6 mA max.
Temperature & humidity range (Guaranteed accuracy)| 23±5°C, relative humidity 85% or less (no condensation)
Operating temperature & humidity range| -10 to 50°C, relative humidity 85% or less (no condensation)
Storage temperature & humidity range| -20 to 60°C, relative humidity 85% or less (no condensation)
Max. allowable input*1| 100 A (rms) AC, continuous, (40 – 70 Hz)
Output impedance| Approx. 100 Q or less| !Approx. 60 Q or less
Location for use| Altitude up to 2000 m, in-door use
Applicable standard| IEC61010-1, IEC61010-2-032 CAT III 300 V Pollution degree 2 IEC 61326-1 (EMC)
Environmental standard| EU RoHS directive compliant
Withstand voltage| 3470 V AC (rms, 50/ 60 Hz) / 5 sec.

• Any combination of: engaged Jaws, enclosure, output terminal
  Insulation resistance| 50 MQ or more (@1000 V)
  • Any combination of: engaged Jaws, enclosure, output terminal
  Conductor size| Approx. 040 mm max.| Approx. 068 mm max.
  Outer dimension| 128(L) x 81(W) x 36(D)mm| 186(L)x 129(W) x53(D)mm
  Cable length| Approx. 3 m
  Weight| Approx. 280 g| Approx. 560 g
  Accessories| Instruction manual, Carrying case
  (KEW 8177: M-9095, KEW 8178: M-9094*2)

  1. Allowable limit values in the case of in correct operations. Accuracy is not quaranteed for current inputs higher than the rated current.
  2. Carrying case isn’t packed with the clamp sensor supplied as standard accessory.

DISTRIBUTOR
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-Itd.co.jp

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