Operation; Introduction; Operating Procedure Summary; General Warnings - Kohler PowerWAVE 8000DPA ST User Manual

5
5.1

Introduction

The PowerWAVE 8000DPA ST UPS system must be commissioned by a fully trained engineer authorised by Kohler
Uninterruptible Power Ltd. before it is put into use.
The commissioning engineer will:
• Check the UPS electrical and mechanical installation, and operating environment.
• Install and connect the UPS batteries.
• Check and complete the UPS configuration settings.
• Check the installation and operation of any optional equipment.
• Perform a controlled UPS start-up and fully test the system for correct operation.
• Provide customer training and hand over the system in a fully working condition.
WARNING: Kohler Uninterruptible Power Ltd. will not accept responsibility for the equipment or the safety of
any personnel if the UPS system is operated before it has been fully commissioned.
The manufacturer's warranty will be invalidated if power is applied to any part of the UPS system before it has
been fully commissioned and handed over to the customer.
5.1.1

Operating procedure summary

Under normal circumstances all the UPS modules in a multi-module system are turned on and operating in the 'on
inverter' mode. If one module fails in a redundant module system the faulty module will shut down but it will not affect the
remaining module(s), which will continue to operate normally. If necessary, the failed module can then be removed or
tested off-line.
If a UPS module fails in a non-redundant system, the load will immediately transfer to the static bypass and the load will be
powered from the unprotected bypass mains supply.
When starting and stopping, the UPS the system goes through four operational states, as shown in Figure 5.1.
The procedures contained in this chapter describe transitions between these states as follows:
• How to start the UPS system from a fully powered-down condition - see paragraph 5.2
• Operating in ECO (on bypass) mode - see paragraph 5.3
• How to transfer the load to the maintenance bypass - see paragraph 5.4
• How to shut down the complete UPS system - see paragraph 5.5
5.1.2

General warnings

WARNING: These operating procedures should be performed by a trained operator.
WARNING: When the UPS system is operating on BYPASS or via the MAINTENANCE BYPASS SWITCH, the
load supply is unprotected if the bypass mains supply fails. It is essential that the load user is informed of this
possibility before you intentionally select either of these operating modes.
WARNING: When the UPS is shut down, power is still applied to the UPS input/bypass terminals unless the
mains supplies are isolated at the incoming switchboard. It is not permissible to turn off the bypass mains
supply if the load is intentionally connected via the internal maintenance bypass switch (IA1) as this will also
disconnect the load power.
56

Operation

TS_616_08 PW8000DPA ST (S2) User Manual 21/4/22