Z1/Z2-Tram-Battery-Charger The Z1 / Z2 Tram Battery Charger was designed to operate from the tram 600Vdc overhead line. A special requirement of the tram operator was that the charger had to withstand inadvertent connection to the rail overhead line – 1500V – at rail and tram crossing points, without failure. The winning design included a 2000V continuous withstand capability with automatic restart, eliminating the need for driver intervention. Over 100 units were supplied and in seven years of operation, no unit has required service.   Z1/Z2-Tram-Battery-Charger Input Overhead 600Vdc
Range: 330Vdc to 720Vdc
Withstands 2000Vdc(cont) with auto-restart Output 27.6Vdc, 90A
Adjustable range: 23 to 32Vdc Climate 0-70°C external ambient
IP54 enclosure for under car mounting Protection Loss of input phase
Short circuit / reverse polarity
Over-temperature
Over-voltage