Relay protection of Low Voltage Circuit Breaker is very important knowing performance to command trip. Low Voltage circuit breaker of Schneider Electric – ACB – has relay protection attached on the circuit breaker, naming Micrologic.
Micrologic has types of advanced protection and measurement:
- 4 levels of protection against overloads and short circuits for the protection levels: 2.0 (LI), 5.0(LSI), 6.0(LSIG), 7.0 (LSIV, built-in earth leakage protection)
- 4 types of measurement: A (Ammeter), E (Energy), P (Power) and H (Harmonics)
Full function test kit (FFTK) Micrologic
The test kit can be used to check:
- the mechanical operation of the circuit breaker
- the electrical continuity of the connection between the circuit breaker and the control unit
- operation of the control unit:
- display of settings
- automatic and manual tests on protection functions
- long and short time protection test
- instantaneous protection test
- inhibition of the earth-fault protection
- inhibition of the thermal memory