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Kyoritsu Electrical Instruments Works KEW 8343 Instruction Manual

Signal source for intelligent socket tester
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Instruction Manual
SIGNAL SOURCE for
INTELLIGENT SOCKET TESTER
KEW 8343

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Summary of Contents for Kyoritsu Electrical Instruments Works KEW 8343

  • Page 1 Instruction Manual SIGNAL SOURCE for INTELLIGENT SOCKET TESTER KEW 8343...

  • Page 3: Safety Precautions

    1. Safety precautions This instrument 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 tests. This instruction manual contains warnings and safety rules which have to be observed by the user to ensure safe operation of the instrument and to maintain it in safe condition.
  • Page 4 ● Dry and store the instrument if it is wet. CAUTION ● KEW 8343 is specially designed to KEW 4506, therefore, it cannot be used with KEW 4500/ 4500BT/ 4505/ 4505BT. ● Use of this instrument is limited to domestic, commercial, and light industry applications.

  • Page 5: Measurement Category

    Measurement category To ensure safe operation of measuring instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT O 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.

  • Page 6: Instrument Layout

    ● KEW 4506 identifies and compares the phases of test voltage applied via KEW 8343 and of outlet. It is applicable to integrated earthing systems with low resistances such as TN, building structure, and common earth systems, and possible to check whether the outlet is correctly wired.

  • Page 7: Getting Started

    A long press (1 sec. or longer) is required to power on the instrument for safety purpose. A long press of test button is also required to power off the instrument. (2) Confirm that green power LED at lower middle part of KEW 8343 lights up while the instrument is on. Note ●...

  • Page 8: Wiring System

    5. Wiring system # DANGER ● This instrument is rated to CAT III 300 V. (max. voltage to ground) Do not test the circuits which exceed this rating: circuits in which 300 V or higher voltage to ground exists. ● Keep your fingers and hands behind the barrier on the test voltage injection clamp and voltage detection cables to avoid possible shock hazards.
  • Page 9 Three-phase 3-Wire 400 V system (wye (Y) connection) since it doesn’t have a neutral wire. KEW 8343 and KEW 4506 (Socket tester) cannot perform socket test if they are connected to: * a live phase and in which one voltage phase is different from other phases in Three-phase 4-wire system (wye or delta connection).
  • Page 10 Power source KEW8343 Fig. 5-3 ● To apply test voltage correctly, check the maximum measurable conductor size with reference to “8. Specifications” so that the jaws close completely. ● As shown in Fig. 5-4, the phase of test voltage applied to a neutral wire (N) changes 180-degree depending on the orientation of the test voltage injection clamp.
  • Page 11 Note ● Do not connect multiple test voltage injection clamps to a conductor to be tested; otherwise, test voltage cannot be applied to the conductor properly. Only one test voltage injection clamp can be connected to the conductor to be tested even if you perform socket test with multiple KEW 4506 at the same time.
  • Page 12 Note ● Socket test cannot be performed if a neutral wire (N) connected to ground is closer to the outlet to be tested than the clamp position of test voltage injection clamp. KEW8343 Fig. 5-7 ̶  10  ̶...
  • Page 13 Note ● Check the wiring diagram before making connections and identify the branch circuit breaker to which the 3P outlet under test is wired, and then connect the test voltage injection clamp close to the outlet to be tested. Depending on the orientation of the test voltage injection clamp, as explained with Fig.
  • Page 14 Note ● When the test voltage injection clamp is connected close to the distribution board, KEW 4506 can test the outlet which is wired to branch circuit breaker [B] shown in Fig. 5-8 and judge as “PASS” (correct); however, it is NOT recommended to connect test voltage injection clamp to the position shown in Fig.
  • Page 15 Arrow mark Outlet side Fig. 5-10 Power on KEW 8343 and connect the test voltage injection clamp to the appropriate location observing the correct orientation according to the wiring configuration to be tested. Connect the black voltage detection cable to a neutral wire (N) and the red voltage detection cable to hot (live) wire (L) correctly.
  • Page 16 (1) Single-phase 2-Wire Clamp the neutral wire (N) with test voltage injection clamp and connect the black voltage detection cable to neutral wire (N) and red voltage detection cable to hot/live wire (L). KEW8343 Fig. 5-11 ̶  14  ̶...
  • Page 17 (2) Single-phase 3-Wire Clamp the neutral wire (N) with test voltage injection clamp and connect the black voltage detection cable to neutral wire (N) and red voltage detection cable to hot/live wire (L): either L1 or L2 correctly. Then you can test any 3P outlets which are connected to L1 or L2 Power source Black...
  • Page 18 (3) Three-phase 3-Wire 200 V (delta connection, L2(S) grounded) Clamp the grounded L2(S) with the test voltage injection clamp and connect the black voltage detection cable to L2(S) and red voltage detection cable to a hot/live wire(L): either L1(R) or L3(T) correctly. Then you can test any 3P outlets which are connected to L1(R) or L3(T).
  • Page 19 (4) Three-phase 4-Wire Clamp the neutral wire (N) with test voltage injection clamp and connect the black voltage detection cable to neutral wire (N) and red voltage detection cable to hot/live wire(L): either L1(R), L2(S), or L3(T) correctly. Then you can test any 3P outlets which are connected to L1(R), L2(S), or L3(T).
  • Page 20 6. Test voltage injection (1) Confirm the green LED (live indicator) at the upper right corner on the unit lights up. When the LED lights up, injection of test voltage starts automatically. If the indicator doesn’t light up, check the connection of voltage detection cables.

  • Page 21: Battery Replacement

    When the batteries are completely exhausted, the instrument turns off automatically. Battery replacement procedures: (1) Power off KEW 8343. (2) Loosen two battery compartment cover-fixing screws and remove the cover. (3) Replace all six batteries with new ones. Insert new batteries observing correct polarity.

  • Page 22: Specifications

    8. Specifications MODEL KEW 8343 Freq. Approx. 1.8 kHz Test volage TRMS Approx. 20 mV rms Current consumption Approx. 27 mA (@9.0 V) Temp. and Hum. range 23±5°C with RH 85% or less (accuracy guaranteed) (no condensation) -10 to 50°C with RH 85% or less Operating Temp.
  • Page 23 50 MΩ or higher (@1000 V) between Insulation resistance voltage detection terminal and enclosure Max. conductor size Approx. 24 mm Dimension Unit 112 (L) x 61 (W) x 42 (D) mm Test voltage 100 (L) x 60 (W) x 26 (D) mm injection clamp Cable length Voltage detection cable...
  • Page 24 DISTRIBUTOR Kyoritsu  reserves  the  rights  to  change  specifications  or  designs  described in this manual without notice and without obligations. 09-22 92-2432...

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