Installation guide

29Installation Guide Silcon DP300E Series 480V 120-160kVA
7OH0006 US rev. 03
Connection
4.5 Installing the UPS in a computer room
If installing the UPS system in a computer room the following MUST be provided at
installation site:
1. – The system can only be installed with external batteries.
– Alternate supplier’s battery cubicle must be UL Listed. If used in computer
room it must be approved for use in computer room.
– When APC battery cubicle is not used, the proper DC disconnects/overcurrent
must be used in accordance with the APC Design Guide.
– If alternate supplier’s batteries are installed in the computer room, please
note that the batteries must be R/C (BAZR2) and have a flame rating of
UL94V2 or UL94V1 or UL94V0.
2. The system must be provided with switch gear.
The switch gear must contain trip function for all switches for Emergency Power
Off function. See principal diagram.
3. The system must be provided with Emergency Power Off function.
The EPO must disconnect all AC and DC sources. See principal diagram.
When pushing the EPO switch, the UPS switches to system off. All switches in the
switch gear are tripped. UPS will discharge capacitors within 5 minutes.
In connection with yearly service it is recommended to test the EPO-function.
APC recommend that noise level is measured in computer room after installation,
with all equipment in operation (UPS, computers, servers, printers, air conditioning,
etc.) and if needed, necessary precaution is taken according to Occupational Noice
Exposure recommendation”.
4.5.1 Principal for EPO
Diagram shows the Emergency Power Off (EPO) principal, and has to be established
in connection with the EPO- and UPS-installation. MCCB’s and switchgear must be
installed with “shunt trip”.
When tripping MCCB’s and switches energy must be available. This energy comes
from an external power supply, power is supplied from “UTILITY 2”, if available,
otherwise from “UTILITY 1” and from the output of the UPS before (Q002).
The EPO circuit and the DP300E have interconnection to the pushbuttons, turn
system “OFF” and “ON”, through the system integration interface card terminals
X001, and on the system integration interface card a selection switch S002 for
internal or external power supply can be set.
S002
Choose between: Emergency shutdown connection between:
– Pos. 1, internal supply X001:3 and X001:4
– Pos. 2, external supply X001:1, +12V / X001:2, GND
The connected EPO switch must have break function. It may be chosen to supply the
current loop of 20mA internally or externally by selector switch S002 on the system
integration interface. In case of external supply, a 12Vdc supply or a 20mA current
generator has to be used.