Emerson 610 Manuel D’Utilisation

Wiring Connections

6. The UPS System Control Cabinet (SCC) neutral must be connected to one common point and

solidly grounded per requirements of the National Electrical Code. The ground connection inside

the UPS SCC/switchgear cabinet may be required by the power wiring configuration at your site.

7. For battery systems: DC power cables (and ground) from battery to UPS module and between

battery cabinets/strings. Observe polarity. When multiple conduits are used, an equal number of

positive and negative cables should be contained in each conduit.

8. For remote battery: Install DC power cables (and ground) from battery to Module Battery

Disconnect, and then to UPS Module DC bus. Observe polarity.

9. Module Battery Disconnect control wiring to UPS module and between battery cabinets, if

applicable. Wiring must be run in individual separate steel conduit.

10. Control wiring from System Control Cabinet (SCC) to UPS modules. Wiring must be run in

individual separate steel conduit. Refer to Figures 60 through 62 or your submittal drawings.

11. Control connections between the System Control Cabinet (SCC) and the Maintenance Bypass

panelboard or switchgear. Refer to Figure 67 or your submittal drawings.

12. Control wiring to the optional Remote Monitor Panel, if used. Selected alarm messages are also

available for customer use through a set of contacts on an optional separate terminal board.

Wiring must be run in individual separate steel conduit.

13. Emergency Power Off control wiring (to SCC) must be run in separate steel conduit.
14. Optional communications wiring (to SCC) for terminals, site monitoring or modem must be run in

separate steel conduit.

15. Any additional special wiring required at your site. Refer to Figures 58 through 74 or your

submittal drawings.

CAUTION

UPS bypass and system output neutral must be connected to only one common point in the

UPS system. This neutral line must be grounded at the source. Refer to 6.0 - Configuring

Your Neutral and Ground Connections for further details.

NOTE
DC power and battery circuit breaker control cables are provided with Liebert battery cabinets

for use between multiple cabinets when bolted together. Power cables are sized for

interconnecting battery cabinets. Battery cabinets specified for bolting up to the UPS are

shipped with power cables to connect the battery cabinet system to the UPS module. Field-

supplied cabling must be provided to connect stand-alone battery cabinets to the UPS module.

Connections from the final battery cabinet to the UPS are provided in the field.

WARNING

Do not make any connections between battery tiers in the battery cabinet. These connections

will be made by the Liebert Global Services representative during start-up.

CAUTION

Cables between batteries and the UPS should be run in matched pairs,

positive-with-negative, within each conduit or cable run. Grouping

like-polarity cables together (i.e., positive-with-positive and

negative-with-negative) can cause stress or damage to the cables,

conduit or buswork.