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HOME > Products > Epoxy cast resin electric device > RISHO special purpose transformer
> Cast resin transformer with disk type windings for direct inverter

Epoxy cast resin electric device

Cast resin transformer with disk type windings for direct inverter

rishocast

For energy saving operation of large capacity Pumps or Motors

 

 

Excellent in impedance consistency with disk type secondary-winding when connecting to large capacity inverter
Therefore voltage fluctuations can be reduced.
Installed in a direct inverter system for energy saving operation of industrial pumps or motors


Connection example


Multiplexing example by transformer


Property
  • Excellent in impedance consistency
  • Fit for large capacity and high voltage applications.
  • Excellent in short circuit mechanical strength
  • Low noise and compact
  • About 25%～30% down-sized with cooling fun system compared to self-cooled transformer of the same capacity
  • Control windings for cooling fan operation is built in
  • Product of 3000kVA class is available according to customer's requirement

 

Representative specifications of transformer for HV direct inverter
Rating capacity
(kVA)

Voltage

(V)

 Frequency
(Hz)		 Connection
Primary Secondary Primary Secondary Primary Secondary
250 21×12 6600 460×12 50 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
300 25×12 460×12 60 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
500 21×24 460×24 50 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
500 28×18 640×18 50 Y Extended△(+20°),△(O°),
Extended△(-20°)
720 30×24 460×24 50 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
750 42×18 640×18 50 Y Extended△ (+20°),△(O°),
Extended△ (-20°)
1200 100×12 460×12 60 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
1500 63×24 460×24 50 △ Y(+30°),Extended△
(+15°),△(O°),Extended△
1800 100×18 640×18 50 Y Extended △(+20°),△(O°),
Extended △(-20°)
125 11×12 3300 460×12 50 △ Y(+30°),Extended △
(+15°),△(O°),Extended△
244 20×12 460×12 50 △ Y(+30°),Extended△
(+15°),△(O°),Extended△