Accessories
4.11 Test devices
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
369
Operation and execution of test functions
Connecting and disconnecting the TD500
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.
Connect the TD500 to the 3VA6 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>
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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