Vertiv EXM 0080kTK16FN01000, Руководство пользователя

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Chapter 1 Overview 7
Liebert EXM 80kVA ~ 200kVA UPS User Manual
ECO mode
If ECO mode is selected, all power switches and the battery switches are closed except for the
maintenance bypass switch, and the system prefers to put the load on the bypass, to achieve the aim of
energy-saving. When the bypass supply is within the range of normal frequency and normal voltage
(adjustable), the load is powered by the bypass, with the inverter on stand-by; when the voltage and/or
frequency of the bypass supply are beyond the pre-defined and adjustable limits, the system will transfer
to the inverter output, and the transfer time for switching from bypass to inverter is less than 2ms
(uninterrupted) and less than 5ms (interrupted). In this mode, the system can normally charge the battery.
Bypass input switch
Rectifier input switch
Bypass input
Mains input
Battery charger
Output switch
Inverter Rectifier
Static switch
UPS output
Battery
Inverter switch
Figure 1-7 Schematic diagram of ECO mode
If ECO mode is required, adjust corresponding parameters through the operator control and display panel.
The operation method of ECO mode is the same as the description in
Chapter 5 UPS Operation
Introduction . However, in normal mode, the load is powered by the bypass, the TOUCHSCREEN displays
'Bypass mode', and the transfer time for switching from bypass to inverter is less than 2ms (uninterrupted)
and less than 5ms (interrupted).
Warning
In ECO mode, the load is not protected against mains distortion.
Parallel redundancy mode (system expansion)
For higher capacity or higher reliability, the outputs of multiple UPS modules can be programmed for
directly paralleling while a built-in parallel controller in each UPS module ensures automatic load sharing.
The parallel system can be composed of up to four UPS modules. For the operation principle diagram of
the parallel redundancy mode, see Figure 7-1.
Frequency converter mode
The UPS can be programmed into frequency converter mode for either 50Hz or 60Hz stable output
frequency. The input frequency may vary from 40Hz to 70Hz. Under this mode, it is required to open the
maintenance bypass switch to disable the static bypass operation, and the battery becomes optional
depending on any requirement to operate in battery mode.
LBS mode
A dual bus system consists of two independent UPS systems, each containing one or more parallel UPS
modules. The dual bus system has high reliability and is applicable to the load with multiple inputs. For