MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
1.2 Definitions
UNINTERRUPTIBLE POWER SUPPLY SYSTEM (UPS) - All components within the UPS Module 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 MODULE CABINET - The metal enclosure which contains the Rectifier, the Inverter, the Chopper, the Static Transfer Switch, the Internal Bypass line, the operator controls, and the internal control system required to provide specified AC power to a load.
UPS MODULE - The Rectifier and Inverter assemblies which, under the direction of the internal control system and operator controls, provide specified AC power to a load.
RECTIFIER - The UPS components which contain the equipment and controls necessary to convert input AC power to regulated DC power required for battery charging and for supplying power to the Inverter.
INVERTER - The UPS components which contain the equipment and controls necessary to convert DC power from the Rectifier, or the battery, to AC power required by the critical load.
CHOPPER - The UPS components which contain the equipment and controls necessary to charge the battery and supply power to the Inverter from battery.
STATIC TRANSFER SWITCH - The device which connects the critical load to the bypass line when the UPS module cannot supply continuous power.
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.
INPUT POWER - Power provided by the electrical utility company, or auxiliary generator, which is connected to the UPS for supplying the critical load.