Charger of accumulator batteries for extreme operating conditions

Almost every public transport vehicle includes the battery pack. For it's charging is necessary that the vehicle dispose with charger. These vehicles are usually operated in different parts of the world and in many areas there are extreme conditions. To ensure operational reliability and a long operating time without maintenance. The charger was designed and created with natural cooling for extreme conditions (deserts). The charger is supplied by three phase AC voltage 400 V/50 Hz. At the output of the charger is adjustable charging voltage 0-30 V and output current 0-250 A. The charger has been implemented with all modern functions used in the current chargers as thermal correction of the output voltage, measuring capacity of the battery pack and the like.