Vertiv Liebert, Installer/User Manual

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3.5 Connecting DC Input Power
NOTE: Make sure that you complete all cabinet and battery interconnections before making any power cabling
connections. The interconnects are very hard to access after the power wiring is complete. Refer to the submittal
drawings that shipped with the battery system, or contact your Vertiv sales representative for the drawings.
WARNING! Risk of electrical shock. Can cause injury or death. The UPS contains high AC and DC voltages.
Check for voltage with AC and DC voltmeters before working within the UPS. Only properly trained and
qualified personnel wearing appropriate, OSHA-approved PPO should prepare to install or install the UPS.
WARNING! Risk of electrical shock. Can cause injury or death. If the load equipment will not be ready to
accept power on the arrival of the commissioning engineer, ensure that the system output cables are safely
isolated at their termination.
WARNING! Risk of electrical shock. Can cause injury or death. When connecting the cables between the
battery extremities to the circuit breaker, always connect the circuit breaker end of the cable first.
The battery power cables require lug-type terminations and are connected to busbars in the I/O sections. The terminal
details and connections for your battery system are described in the installation drawings. Refer to the submittal drawings
that shipped with the battery system, or contact your Vertiv sales representative for the drawings..
UPS models with the static bypass only employ busbars that are contained by the battery cabinet and the input/output
cabinet.
UPS models with the back-feed disconnect, common mode choke or bypass sharing inductors or with any combination of
these options employ busbars that extend through openings in the tops of the adjacent battery cabinet and input/output
cabinet. These busbars require a protective, factory-supplied shroud that is attached to the input/output cabinet and the
adjacent attached battery cabinet. The protective, factory-supplied shroud is shown in Figure 3.4 on the next page.
When Liebert® battery cabinets are attached to the UPS, the busbars and cables for the power connections are factory-
supplied.
To connect power cables for a battery system:
1. Remove the panels from the right side of the input/output cabinet and from the left side of the adjacent battery
cabinet.
2. Position the cabinets and bolt them together.
3. Remove two interconnect straps and the M10 mounting hardware from the battery cabinet. Keep the straps and
hardware for possible future use.
4. Use the hardware supplied in the cable kit to connect the output busbars from the battery cabinet to the input
busbars in the input/output cabinet.
NOTE: Busbar connections vary depending on the system rating. For details, refer to the submittal drawings that
shipped with the battery system, or contact your Vertiv sales representative for the drawings. Figure 3.4 on the next
page and 3.5 above, shows an overview of the connection.
5. Torque the busbar and cable connectors to 480 in-lb. (54Bm).
6. Ensure correct phase rotation.
3 Electrical Installation
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