Thomas & Betts 9395 - Manual (Page 18)

UPS 225 - 275 kVA
User’s and Installation Guide
1027212
Revision B
1
Read and understand the following notes while planning and performing the installation:
Install the interface wiring (for example, building alarm, relay output, battery breaker trip,
and X-Slot) separate from the power wiring. The wiring should have double insulation and
rated at Uo/U = 300/500 Volts.
All interface wiring is to be provided by the customer.
When installing internal interface wiring to X-Slot terminals, route the wiring through the
internal opening in the X-Slot communication bay.
All building alarm inputs or remote features require an isolated normally-open contact or
switch (rated at 24 Vdc, 20 mA minimum) connected between the alarm input and common
terminal as shown. All control wiring and relay and switch contacts are customer-supplied.
Use twisted-pair wires for each alarm input and common.
The building alarms can be programmed to display the alarm functional name.
LAN and telephone drops for use with X-Slot cards must be provided by facility planners or
the customer.
The UPS Battery Aux and 48 Vdc Shunt Trip signal wiring from the UPS must be connected
to the DC source disconnect device.
Battery Aux and 48 Vdc Shunt Trip wiring should be a minimum of 1.5 mm
2 .
The Remote EPO feature opens all contactors in the UPS cabinet and isolates power from
your critical load. Local electrical codes may also require tripping upstream protective
devices to the UPS.
The Remote EPO switch must be a dedicated switch not tied to any other circuits.
A jumper wire must be connected between pins 1 and 2 on TB1, if the normally-closed
Remote EPO contact is not used.
Remote EPO wiring should be a minimum of 0.75 mm
2 and a maximum of 2.5 mm 2 .
The maximum distance between the Remote EPO and the UPS cannot exceed 150 meters.
Alarm relay contacts have a maximum current rating of 5A and a switched voltage rating of
30 Vac and 28 Vdc.
Alarm relay wiring should be a minimum of 0.75 mm
2 .
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