MGE UPS Systems 250A - Manual (Page 13)

34020201EN/AB - Page 13
2. Installation
Module without isolation
transformer, combined earth and
neutral (TNC system)
1. Connect the PEN protection cable to the
earthing bar at the bottom of the module.
2. Remove the bottom cover on circuit
breaker Q2.
3. Connect the three phases of the input
power cable to the bottom terminals of circuit
breaker Q2 (without removing the control
wires that are already connected).
4. Use a cable (not supplied) to connect the
neutral connector on the lower part of circuit
breaker Q2 to the earthing bar.
5. Ties the cables to the earthing bar.
6. Refit the bottom cover on circuit breaker
Q2.
Q2
5
B C A
1 4
N PEN
B C
Q2
2
4 3 3
6
3
N
A