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2.4.1 Using power supplies instead of batteries
It is not recommended to power the inverter directly from a DC power supply when full inverter
performance is required. Most power supplies are not able to supply the huge surge currents
required by the inverter, and are usually generating a too high ripple voltage causing the inverter's
high ripple protection to trip.
2.5
Connection to the battery
This inverter is equipped with two 25 mm² wires with a length of 1.5 meters. Unless it is absolutely
necessary, Alessi Center advises not to extend the battery wires. Extending the battery wires may
increase system losses and can cause inverter malfunctioning like tripping the input ripple
protection circuit. If it is unavoidable to extend these wires, use a wire gauge of at least 1.5 times
larger than the ones supplied with the inverter. Maximum recommended battery wire length is
approx. 3 meters. Make sure that an eventual joint between the original wires and the extension
wires is made solid and with very low electrical resistance in mind.
TO AVOID FIRE HAZARDS CAUSED BY DAMAGED DC WIRES, ALWAYS
PLACE A BATTERY SYSTEM FUSE AS CLOSE AS POSSIBLE TO YOUR
BATTERY TERMINALS.
Recommended battery fuse size is : 150A..200A for the 12V systems,
125A..150A for the 24V systems and 60A..100A for the 48V systems.
CAUTION
THE RED WIRE MUST BE CONNECTED TO THE POSITIVE (+) TERMINAL
AND THE BLACK WIRE TO THE NEGATIVE (-) TERMINAL OF THE
BATTERY.
Reverse polarity connection of the battery wires can damage the inverter!
Damage caused by reversed polarity is not covered by the warranty. Make sure
CAUTION
the powerswitch is in the OFF '0' position before connecting the battery.
IF THE INVERTER IS CONNECTED TO THE BATTERY WITH INCORRECT
POLARITY, THE DC FUSE WILL BLOW.
To replace the internal DC fuse, see chapter 5.2 for further information. If the
fuse blows again, even with the correct polarity applied, the inverter is damaged
and must be returned for service.
WARNING
2.5.1 General precautions about working with batteries
1. Working in vicinity of a lead acid battery is dangerous. Batteries can generate explosive
gases during operation. Never smoke or allow a spark or flame in vicinity of a battery.
Provide sufficient ventilation around the battery.
2. Wear eye and clothing protection. Avoid touching eyes while working near batteries.
Wash your hands when done.
3. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid
enters eye, immediately flood eye with running cold water for at least 15 minutes and get
medical attention immediately.
The Alessi-Serie
Pure Sine Wave Inverters
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