IV. PRINCIPLES OF OPERATION:
The ADI UPS has several functional blocks. See block diagram.
TRANSIENT VOLTAGE PROTECTION:
This network removes high voltage noise from the 250VDC buss
before conversion.
HIGH VOLTAGE SWITCH:
Provides a buffer for DC input to converter logic power.
CONVERTER:
Changes the 250VDC buss to a lower DC voltage to float charge a
battery and provide power to the DC to AC power inverter.
BATTERY:
Backs-up the converter to provide power to the inverter for no-break
short term power.
INVERTER:
Changes the low DC voltage to AC voltage at 60 cycle for output.
V. MAINTENANCE
BATTERY:
The battery is a sealed, gelled electrolyte type that is rugged and
completely maintenance free.
For this application, the battery should be replaced each two years.
Replacement batteries are available from:
East Penn Manufacturing Co., Inc.
215-682-4231
Type 8GU1
Secure the batteries using 1/2"W x 29"L heavy duty lashing-type cable
ties.
Page 7 of 8
