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Operation and execution of test functions

Connecting and disconnecting the TD500

CAUTION

Personal injury, malfunctions and false test results

Failure to connect the TD500 test device to the molded case circuit breaker according to the sequence of steps specified below can result in personal injury, malfunctions and false test results.

Disconnect the molded case circuit breaker from the power supply before connecting the TD500.

Strictly adhere to the sequence of steps described below for connecting the two devices.

Connecting the TD500 to the 3VA2 molded case circuit breaker

  1. Disconnect the molded case circuit breaker from the power supply.

  2. Insert the connecting cable in the socket on top of the TD500 test device.

  3. Insert the connecting cable in the test socket of the ETU.

  4. Insert the cable of the power supply unit in the socket on the bottom of the TD500 test device.

  5. Connect the power supply unit to a socket.
    The TD500 test device is now switched on and ready.

  6. Press the pushbutton labeled <ETU Power ON/OFF> 58876172043.png on the TD500 test device.
    The ETU is now powered via the TD500 and activated. Successful communication between the TD500 and ETU is indicated by illumination of the LED labeled "COM" on the TD500.

All test functions available for the connected ETU are indicated by illumination of the appropriately labeled LEDs.

Example: In this example, the L, S and I releases, the transformers (TRANS) and the current meter (METER) can be tested on the connected ETU:

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Disconnecting the TD500 from the 3VA2 molded case circuit breaker

  1. Switch off the 3VA2 molded case circuit breaker.

  2. Press the pushbutton labeled <ETU Power ON/OFF>58876172043.png on the TD500 test device.
    The LED labeled "COM" on the TD500 goes out. The ETU is now no longer powered via the TD500 and is deactivated.

  3. Disconnect the power supply unit from the socket.

  4. Detach the power supply unit cable from the TD500.

  5. Detach the connecting cable between the TD500 and the ETU.

Test tripping functions L, S, I, N and G

  1. Connect the TD500 to the 3VA2 molded case circuit breaker as described above.

  2. Switch on the 3VA2 molded case circuit breaker.

  3. To test the tripping function, press one of the pushbuttons <L>, <S>, <I>, <N> or<G on the TD500 test device.

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    • When a pushbutton is pressed, its LED flashes while the test is in progress.

    • The ETU trips when the set trip times expire and the molded case circuit breaker switches from "ON" to "TRIP".

    • On completion of the test, the LED of the selected pushbutton changes from flashing to steady illumination.

  4. Wait for the test to end and evaluate the test result by the status of the LED labeled "RESULT":

    Test was successful:
    The LED "RESULT" lights up green.

    Test was unsuccessful:
    The LED "RESULT" flashes red.
    Repeat the test. If the test fails again, contact Technical Support .

  5. Press the pushbutton for the same tripping function again in order to confirm the test result and restore the TD500 to its initial state.

  6. Switch on the molded case circuit breaker again (ON position) in order to carry out further tripping function tests.

Example: Testing the tripping function L on an ETU550 LSI

  1. Connect the TD500 test device to the 3VA2 molded case circuit breaker.

  2. Switch on the 3VA2 molded case circuit breaker.

  3. Press pushbutton <L> on the TD500 test device.
    The LED in the pushbutton <L> starts to flash.

  4. Wait until the LED in the pushbutton <L> changes from flashing to steady illumination.
    The test is completed.

  5. Evaluate the test result by the status of the LED labeled "RESULT":

    LED "RESULT" is illuminated steadily in green: The test was successful.

    LED "RESULT" flashes red: The test was unsuccessful and must be repeated. If the test fails again, contact Technical Support .

  6. Press the pushbutton <L> again in order to confirm the test result and restore the TD500 to its initial state.

Carry out a meter test

The purpose of the meter test is to determine whether the ETU is measuring and displaying current correctly. A test current of 0.4 x Irated is fed into the ETU. The current value measured by the ETU is then checked to confirm that it matches the test current.

NOTE

The molded case circuit breaker does not need to be switched to position "ON" for this test.

Execute the test

  1. Connect the TD500 test device to the 3VA2 molded case circuit breaker.

  2. Press the pushbutton labeled <METER> ①.

    59049893387.png

    The LED in the <METER> pushbutton begins to flash. The test takes approximately 30 seconds.

  3. Wait until the LED in the pushbutton <METER> changes from flashing to steady illumination.
    The test is completed.

  4. Evaluate the test result by the status of the LED labeled "RESULT":

    LED "RESULT" is illuminated steadily in green: The test was successful.

    LED "RESULT" flashes red: The test was unsuccessful and must be repeated. If the test fails again, contact Technical Support .

  5. Press the pushbutton <METER> again in order to confirm the test result and restore the TD500 to its initial state.

Test transformers

This procedure tests the transformers (energy transformer or Rogowski coil) to determine the following:

  • Are transformers installed in the ETU?

  • Are transformers correctly installed in the ETU?

  • Are the installed transformers functioning correctly?

NOTE

In order to carry out this test, it is absolutely essential to disconnect all external power supplies (e.g. EFB300, COM800, COM100, 24 V module) to the electronics.

Execute the test

  1. Disconnect all external power supplies to the electronics.

  2. Connect the TD500 test device to the 3VA2 molded case circuit breaker.

  3. Switch on the 3VA2 molded case circuit breaker.

  4. Press the pushbutton labeled <TRANS> ①.

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    The LED in the <TRANS> pushbutton begins to flash. The test takes several seconds.

  5. Wait until the LED in the pushbutton <TRANS> changes from flashing to steady illumination.
    The test is completed.

  6. Evaluate the test result by the status of the LED labeled "RESULT":

    LED "RESULT" is illuminated steadily in green: The test was successful.

    LED "RESULT" flashes red: The test was unsuccessful and must be repeated. If the test fails again, contact Technical Support .

  7. Press the pushbutton <TRANS> again in order to confirm the test result and restore the TD500 to its initial state.

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