Power capacitors are connected in parallel to loads to ensure efficient consumption of electricity. They are used to improve the power factor and regulate voltage. They are installed at substations and factories, etc. to help achieve stable supply of electricity and reduce electricity fees, etc. Power capacitors are essential for substation equipment.


In 1931, we became the first company in the world to develop and commercialize “OF type power capacitors” that had a completely enclosed structure and contained insulating oil. Since then, we have continued to offer highly reliable power capacitor equipment as the top manufacturer. The current “OF type high voltage phase advanced power capacitors” are low loss all-film power capacitors that have been improved based on our extensive experience.
We were also the first in Japan to commercialize “unit type capacitor equipment” that integrated power capacitors, series reactors, and discharge coils as a system. Subsequently, we commercialized “unit type capacitor equipment (with vacuum contactor)” that incorporated switches and packaged all the functions needed by customers.


Can Type Capacitor Unit

Voltage 2.2~22kV
Frequency 50/60Hz
Capacity Up to 800kvar

Can Type Capacitor Equipment

Voltage 10~154kV
Frequency 50/60Hz
Capacity Up to 60Mvar

Unit Type Capacitor Equipment (with vacuum contactor)

Voltage 3.3~13.8kV
Frequency 50/60Hz
Capacity Up to 2,000kvar

Tank Type Capacitor Equipment

Voltage 10~220kV
Frequency 50/60Hz
Capacity Up to 60Mvar

* The above table is for reference. We review other ratings (voltage, capacity) upon request.

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