
Chapter 6 Operating Instructions
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Shield M10U user manual
Chapter 6 Operating Instructions
Warning-Hazardous mains voltage and/or battery voltage present(s) behind the protective
cover
The components that can only be accessed by opening the protective cover with tools cannot be operated by user.
Only qualified service personnel are authorized to remove such covers.
6.1 Introduction
The Modular UPS operates in the following 3 modes listed in
table.6-1
. This section describes various kinds of operating
procedures under each operating mode, including transfer between operating modes, UPS setting and procedures for
turning on/off inverter.
Tab.6-1: UPS Operating mode
Operating mode
Descriptions
Normal mode
UPS powers the load
Bypass mode
The load power supply is provided by the static bypass. This mode can be regarded as a
temporary transition mode between the normal mode and maintenance bypass mode, or a
temporary abnormal operating status
Maintenance mode
UPS Shuts down, the load is connected to the mains via Maintenance bypass. NOTE: in this
mode the load is not protected against abnormal mains
Note:
1. Refer to Chapter 7 Operator Control and Display Panel, for all the user operating keys and LED displays.
2. The audible alarm may annunciate at various points in these procedures.
3. The UPS function can be set via maintenance software. However, the setting and commissioning must be done by
maintenance engineers trained.
6.1.1 Power Switches
The UPS rack system has a manual bypass breaker, a bypass input breaker, and all the other transfers are processed
automatically by internal control logics.
Customer must install an external mains input breaker, an external maintenance bypass breaker and an external output
breaker. An external bypass breaker is needed if split-bypass is applied for.
Note
It’s recommended that 4-poles breakers are used, and the rated current is higher than rated current of bypass breaker
in UPS. For 40KVA, 125A breakers are needed. For 20KVA, 63A breakers are needed.
6.2 UPS Startup
Do not start the UPS until the installation is completed, the system has been commissioned by authorized personnel and
the external power isolators are closed.
6.2.1 Start-Up Procedure
This procedure must be followed when turning on the UPS from a fully powered down condition.
The operating procedures are as follows:
1.
Open the external power switch. Open the internal power switch. Open the UPS door, connect the power supply
cables and ensure the correct phase rotation.
警告
危 险
警告
危 险
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