UPS for 480 Vac Grid, User Guide, doc. rel. 4.0
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3.
Overview of System Components
This section provides a brief overview of the role and function of the UPS primary components. It
includes the following sections:
1.
System Controller (includes LCD control panel)
2.
Ac power module (30 kVA / 30 kW)
3.
Dc converter module (60 kW)
4.
Static Switch
5.
External Battery Bank (required but not included)
3.1.
System Controller
The UPS System Controller has three main functions including to:
1.
Control and monitor UPS operation according to user commands.
2.
Collect and summarize data from all sections of the UPS.
3.
Manage communication with external computers for data transfer and operation.
The UPS can operate without the System Controller but with reduced
functionality.
The System Controller includes the LCD control panel used to monitor and
operate the UPS.
3.2.
Ac power module (30 kVA / 30 kW)
The ac power module uses VFI (voltage frequency independent) dual online conversion
technology to convert ac power from the grid to clean ac power to the load.
The power module is the core of the UPS. The UPS supports up to eight identical internal ac
power modules all operating in parallel. The number of ac power modules installed in the cabinet
depends on the user's load capacity and redundancy requirements.
Each ac power module includes a 3-phase rectifier with PFC (power factor correction) and a 3-
phase PWM (pulse-width modulation) Inverter connected to batteries via the dc-dc converter
modules.
