Samsung U6A4 Installation Manual page 118

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3 Installing the Product
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

The fastening torque should be 30 Nm (300
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.
100
Figure 3-128: Connecting the DC Link High Current Terminals
bolt.
kgf/cm).
English 8/2020. Rev 0.3