Welding transformer, high-current transformer, transformer for spot welding machines, resistance wel

ELREX 3x ET70.0.G

Welding transformer, high-current transformer, transformer
for spot welding machines, projection welding machines, seam welding machines
ELREX type 3x ET70.0.G
Serial no. Year of manufacture approx. 1990
Comprising three water-cooled transformers with water-cooled rectifier block
Technical data:
Total rating at 50% duty cycle: 210 kVA (total output from 3 transformers)
Secondary voltage: 7 – 10.5 volts (adjustable in 4 steps via terminal connectors on the transformer)
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Secondary current at 50% duty cycle: 20.1 kA (total from 3 transformers)
Primary connection: 380 volts, 50 Hz (three-phase)
Details per each transformer:
Rating at 50% duty cycle: 70 kVA (per transformer)
Secondary voltage: 7 – 10.5 volts (adjustable in 4 steps via terminal connectors on the transformer)
Secondary current at 50% duty cycle: 6.7 kA (per transformer)
Primary connection: 380 volts, 50 Hz (two-phase)
Cooling water requirement per transformer: 4 liters/min.
Insulation class: F
- Water-cooled transformer
- Water-cooled rectifier block mounted on secondary side
- DC power output via contact surfaces 50x50mm with M20x1.5mm threaded holes
- Temperature sensor on each rectifier element and on each transformer winding
- Connection cable: 7-core, cross section 50 mm², length approx. 6 m
Overall dimensions (WxHxD): 700 x 710 x 440 mm
Total weight: 480 kg
Good condition

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