American Power Conversion 240-320kW manual External Connection

External Connection

•This auxiliary contact is also called “Normally Open” (NO), because the auxiliary contact will be open when the main contacts are open

•Please note that the above term “NORMALLY” has nothing to do with NORMAL UPS OPERATION MODE

When switching Q003 from “OFF or 0” to “ON or 1”, the auxiliary contact has to open BEFORE the corresponding main contacts are closed. When switching Q003 the opposite way from “ON or 1” to “OFF or 0”, the auxiliary contact has to close with a maximum delay of 0.5 seconds from the time when the corresponding main contacts are opened.

•This type of auxiliary contact is called an “early break” contact. (This also means that it will “make late” when activated in the opposite direction)

•The auxiliary contact is also called “Normally Closed” (NC), because the auxiliary contact will be closed when the main contacts are open

•Please note that the above term “NORMALLY” has nothing to do with NORMAL UPS OPERATION

CAUTION!

All wiring to alarm and signal circuit fields to be rated 300V (minimum).

X005 (output relays)

The battery operation signal is received with a 30-second delay. This function is inactive during battery tests. Common fault relay facility is programmable (standard factory setting: 10 sec.) See APC Silcon User Guide for details.

Maximum nominal voltage on contact circuits is 277VAC. If two different phases are involved, maximum phase to neutral voltage should be below 160VAC. Please note that phase L1 is already present on the System Integration Interface board, supplied from the Service Bypass Panel. Therefore, if a phase is needed for alarm or signal purposes, Phase L1 should be used”.

Terminals X001, X003, X005, X004, X012:

Cable size AWG18 to AWG14, use solid copper conductors only.

990-4049

26 Installation Guide APC Silcon 240-320kW 480V UPS