Definitions - Mitsubishi Electric 9900CX SERIES Owner Technical Manual

Page Number:
9900CX SERIES UPS
1-7
OWNERS / TECHNICAL MANUAL

1.3 DEFINITIONS

UNINTERRUPTIBLE POWER SUPPLY SYSTEM (UPS) - All components within the UPS
Cabinet and associated batteries that function as a system to provide continuous, conditioned
AC power to a load. This is sometimes referred to as the "System".
UPS CABINET – The metal enclosure which is the main part of UPS and composed of the
Bypass module, the 3～6 UPS modules, and the Cable Entry Section.
LINK CABINET – The metal enclosure in which buses from UPS are connected.
UPS MODULE - The metal enclosure which contains the Converter / Inverter, Charger, and
internal control systems required to provide specified AC power to a load.
CONVERTER / INVERTER - The UPS components which contain the equipment and controls
necessary to convert input AC power to output AC power required by the critical load.
CHARGER - The UPS components which contain the equipment and controls necessary to
regulate DC power required for battery charging and for supplying power to the Inverter.
BYPASS MODULE - The metal enclosure which contains the Bypass line, the Static transfer switch,
UPS operator controls, and internal control systems.
BYPASS LINE - The line which conducts electricity directly from the input power source to the
critical load during Maintenance or whenever the UPS is not completely operational.
STATIC TRANSFER SWITCH - The device which connects the critical load to the bypass line
when the Inverter cannot supply continuous power.
AC INPUT POWER - Power provided by the electrical utility company, or auxiliary generator,
which is connected to the UPS for supplying the critical load.
BATTERY - The rechargeable battery strings which supply DC power to the inverter to maintain
continuous AC power to the load during AC input power failure conditions.
MITSUBISHI ELECTRIC 9900CX SERIES UPS