D.C. TO A.C. INVERTER
SINE WAVE OUTPUT
La Marche inverters use highly reliable, solid state, SCR
circuitry with a ferroresonant transformer that has
inherent regulation. Output filtering, and overload
protection (current limiting ) The inverter is self-protected
for AC-DC shorts, reverse polarity, and over or under dc
VOLTAGE Battery protection is provided by low voltage
shutdown and DC input fusing.
TWO TYPES OF OPERATION
CONTINUOUS INVERTER-During normal operation, the
A-51 inverter draws power from the charger and supplies
regulated since wave AC power to the load. If AC power
to the load. When power is restored. The change back
to normal operation is automatic, including recharging of
STANDBY INVERTER-During normal operation, the load
is supplied power directly from the commercial AC line,
wired through a transfer relay or static switch (optional
accessory) in the inverter. in the event of AC line failure,
the load is disconnected from the line, the inverter begins
drawing power from the batteries and supplies Ac power
to the load. Reversed and batteries are restored.
(Manual retransfer optional.)
Reliable-simple, few components, field
proven, SCR ferro resonant design.
State of Art Static Switch.
Inverter Star/Off Switch
Current limited and protected for AC-
DC short, over/under voltages, and
Class H Insulation.
Convection Cooled, Front Access
Available for 24 VDC 48 VDC, AND
120 VDC battery supplies.
50 or 60 Hertz Operation.
Wide range of models and options.
Transfer Relay 100 to 1000 2 to 10
KVA 40 12-5 to 20 KKVA 50 msec.
Transfer from and retransfer to
inverter Failure-DC Light Load on
Manual Maintenance bypass Switch.
Concidental line synchronization.
¼ cycle Static Switch require
coincidental line sync) with
coincidental line sync) with Manual or
Delayed Automatic transfer Switch,
Test Switch Fused Inverter and utility
Branch Life LEDs for:
Load Powered by Prime Source
Load Powered by Alternate
Sources Phase Locked
The following adjustments are provide:
Inverter Overvoltage Limit
Inverter Undervoltage Limit
Utility Overvoltage Limit +10
Utility Undervoltage Limit -10
Load Overvoltage Limit +15
Load Undervoltage Limit -15
Delayed Retransfer sec 1-10
Phase Lock (degrees)
Prime source Selection
Utility Power Failure
Contacts for all status conditions
(5) form C
Low DC voltage alarm
High DC voltage alarm
AC and DC circuit breakers
Others: (see General Catalog)