When Price And Quality Matter. Next Generation Lightweight Power Supply • 650 Volt, 1,000 Hz • 100 KVA @ 50% duty cycle • Secondary no load DC voltage of 10.6 volts • Fully encapsulated to ensure long life • Water-cooled, 6 L.P.M. (1.59 G.P.M.) minimum @ 30°C • Weight: 16.8 kilograms (37 lbs)
TDC-7890 Secondary View
TDC-7890 Power Supply Rating Diagram and Drawings on Back.
Power Supply Rating Diagram Single Phase, Center Tap Rectifier. Size “2” Rectifier
Weld Time in Cycles (50/60Hz) Rectifier Rating Curve
For more information
Notes • These curves are based on rated water flow of 6 L.P.M. (1.59 G.P.M.). • Maximum water in temperature of 30°C. • Life expectancy of 10 million thermal excursions. • For applications above a 20% duty cycle, contact RoMan Manufacturing ® for assistance. Rectifier Rating: % Duty Cycle is based on shortest time from beginning of one weld to the beginning of next weld. On time/(On + Off time). Transformer Rating: % Duty Cycle is total “On” time in one minute.
Grand Rapids, Michigan 616.530.8641 romanmfg.com
4-2017Page 1 Page 2
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