Samsung U6A4, Installation Manual

Page: 118 / 128

3
.
Installing the Product
100 English 8/2020. Rev 0.3
2.
Connect the DC link high-voltage terminals from the UPS.
CAUTION

Verify with a voltmeter that no power is present on the system. Disconnect all input power
supplies. Use lock out/tag out procedures to secure the UPS and battery system before
beginning this step.

In this step, the battery and UPS are isolated by the SMU because the circuit breaker in the
SMU is opened.
NOTICE

Connect the high-voltage terminals using an M12 bolt .

The fastening torque should be 30 Nm (300 kgf/cm) .
Figure 3-128: Connecting the DC Link High Current Terminals
3.
Special case: if connecting the battery system in three-wire system, connect two racks to the three-wire DC bus connection
according to the diagram below. System BMS must be configured to operate correctly with this connection.