Vertiv Liebert EXL S1, Руководство по эксплуатации и обслуживанию

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2.3.5 Load Transfer-1+N System: Add a UPS to the System (Collective)
Adds one UPS module to the collective bus with the critical load supplied by the UPS inverter.
NOTE: UPS modules must be de-energized with the MOB Open or be in Test Operation Mode once removed from the
collective bus.
1. Verify that all parallel cables are properly connected to the UPS modules in the system.
2. Close the external rectifier feeder breaker on the UPS module to be added to the collective bus.
• External Remote Back-Feed Breaker (RBB) for single-input/feed applications
• External Rectifier Feed Breaker (RFB) for dual-input/feed applications
NOTE: The Rectifier will start the UPS module at this time. Do not proceed until the Touchscreen Control Panel on the
UPS module is fully operational.
3. Verify that the Rectifier on the UPS module being added to the collective bus has started. The rectifier icon on
the Touchscreen Control Panel should be green. If it is not, the issue must be corrected before proceeding.
4. Close the external Remote Back-Feed Breaker (RBB) and optional internal Back-Feed Disconnect (BFD) on the
UPS module, if installed.
NOTE: The Bypass Static Switch (BPSS) of the UPS module being added to the collective will remain Off if the
collective bus is on Inverter but will turn On if the collective bus is on BYPASS.
5. Close the external Module Battery Disconnect(s) (MBD) on the UPS module.
6. Close the external Module Output Breaker (MOB) on the UPS module.
7. From the Touchscreen Control Panel on the UPS module being added to the collective bus, select OPERATE >
UNIT OPERATIONS > Inverter On > Single .
8. Verify that all UPS modules are connected to the collective bus.
2.3.6 Maintenance Bypass Load Transfers—1+N Module System
Follow these instructions to manually transfer the load between Maintenance Bypass and the UPS bypass line. Do not
transfer the load between Maintenance Bypass and the UPS module inverter output. Use the Touchscreen Control Panel
screen to verify that the UPS bypass line is available.
NOTICE
Risk of improper operating sequence. Can cause equipment damage.
Failing to follow the proper sequence when operating any circuit breaker may cause damage to the connected
equipment.
Operating a Maintenance Bypass circuit breaker out of sequence could cut off power to the critical load.
NOTICE
Risk of improper load transfer. Can cause equipment damage.
The UPS must be on internal bypass before performing the following procedures and operating the MIB or the
MBB, or damage to the UPS may occur and the critical load may be lost.
Vertiv™ | Liebert® EXL S1 Operation and Maintenance Guide
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