18
PE
Cables crimped
OT terminal
M6
7mm
4.9Nm
2.6.3 Circuit Breaker
The external circuit breakers (CB) for the system are recommended in Table 2-4.
Table 2-4 Recommended CB
Model
Input
Bypass
Output
Battery
15KVA
（
3 / 3
）
63A/3P
63A/3P
63A/4P
DC 100A/3P
10KVA
（
3 / 3
）
63A/3P
63A/3P
63A/4P
DC 80A/3P
Attention
The CB with RCD (Residual Current Device) is not suggested for the system.
2.6.4 Connecting Power Cables
(1) Verify that all the switches of the UPS are completely open and the UPS internal maintenance
bypass switch is open. Attach necessary warning signs to these switches to prevent unauthorized
operation.
(2) Open the back door of the cabinet, remove the plastic cover. The input and output terminal,
battery terminal and protective earth terminal are shown in Fig.2-5
Fig.2-5 Connection terminals
(3) Connect the protective earth wire to protective earth terminal (PE).
(4) Connect the AC input supply cables to the main input terminal and AC output supply cables to
the output terminal.
(5) Connect the battery cables to the battery terminal.
(6) Check to ensure there is no mistake and re-install all the protective covers.
Note: mA, mB, mC standard for Main input phase A, B and C; bA, bB, bC standard for
Bypass Input phase A, B and C.
Attention
