3: Installation
36
UPS471-02-00 PW9000DPA User Manual UK Dated 06/08/14
8. Connect the UPS input supply cables to the UPS power terminals 1L1, 1L2, 1L3 and 1N. Ensure correct (clockwise)
phase rotation.
9. Connect the earth cable from the bypass mains distribution board to the UPS cabinet’s protective earth (PE) terminal.
10. Connect the UPS bypass mains supply cables to the UPS bypass power terminals 2L1, 2L2, 2L3 and 2N. Ensure
correct (clockwise) phase rotation.
11. Secure the cables to the fixing rail under the connection terminals.
Note:
The UPS commissioning engineer will re-configure the UPS electronics to operated with a dual feed input at the
time of commissioning.
3.7.2 Connecting the UPS output cables
It is recommended that a separate load distribution board is provided for the load.
Before you begin connecting the UPS output cables to the load distribution board:
• Check that the potential full load does not exceed the UPS output power rating (
OUTPUT POWER
on the
nameplate).
• Ensure the load circuit breakers on the load distribution board are correctly sized with respect to the load rating and
associated cabling.
• Ensure that the maximum total load rating, and maximum load rating of each individual load socket, is indicated on
the load distribution board.
The circuit breakers must comply with the prescribed IEC Standards (e.g. BS7671:2008).
1. Gain full access to the UPS power terminals by removing the aluminium panel at the bottom of the UPS, below the
switch-gear.
2. Connect the protective earth cable from the load distribution board to the UPS cabinet’s protective earth (PE) terminal.
3. Connect the UPS output supply cables to the UPS output power terminals 3L1, 3L2, 3L3 and 3N. Ensure correct
(clockwise) phase rotation.
4. Secure the cables to the fixing rail located under the UPS connection terminals.
5. Ensure the output cables are connected to the correct power terminals on the load distribution board.
CAUTION: The input Neutral cable must ALWAYS be connected.
CAUTION: The bypass Neutral cable must ALWAYS be connected.
CAUTION: The output Neutral cable must ALWAYS be connected.