Mitsubishi 2033D SERIES technical manual Inverter supply at battery operation

MITSUBISHI	2033D SERIES UPS	Page Number:
ELECTRIC	OWNERS / TECHNICAL MANUAL	1-7

C) Inverter supply at battery operation

FIGURE 1.3 Single Line Diagram - Battery Operation

CB

AC Bypass

Input

CB

AC input

User supplied

		Static Transfer		Maintenance
				Bypass
		Switch
				Switch
	52RS
	CONVERTER	INVERTER
				Output
52RC	FI	FO	52C	52CS
		FB
		72B		Power Flow
	BATTERY			Not in Use
		50kVA,	80kVA:
				UPS Module
		External Battery

Referring to Figure 1.3: In the event of AC input source failure or interruption, the converter will de-energize and the battery will immediately discharge and supply DC power to the inverter to maintain continuous AC power to the load. This operation will continue until:

a)The battery capacity expires and the inverter turns off, or

b)Input power is restored after which the converter will power the inverter and critical load and simultaneously recharge the batteries.

A fully charged battery will provide power for the specified time at the rated load, or longer, at a reduced load.

When power is restored after a low battery shutdown, the converter automatically restarts operation, recharges the batteries and the Inverter is automatically restarted without operator intervention. Load is automatically assumed by the inverter without operator intervention.

The power drawn by the load is equally shared between all system UPS during battery operation.

MITSUBISHI ELECTRIC 2033D SERIES UPS