Immediate compensation of inductive reactive power is very often the only way to cope with disturbances imposed on the mains by huge, rapidly changing inductive loads. Conventional capacitor switching devices with reaction periods of 20...90 seconds can not comply with such intensive requirement.
The DNDT thyristor switch module makes reaction times of 20 milliseconds possible. The switching is done, practically without reactive effects, at zero voltage level (no voltage between input and output). DNDT has a very compact design, convenient connection, integral overheating protection and LED indication for the switching signal and excessive temperature.
Rated Voltage: 230V, 400V
Rated Frequency: 50Hz, 60Hz
Max Capacitor Power: 50Kvar (three phase), 45Kvar (single phase)
Driving Voltage: DC 12V
Driving Current: ≤30mA
Protection Class: IP30
Reaction Time: 1~20mS
Altitude abv.s.l.: ≤3000m
Cooling method: Natural cooling, fan cooling when temperature over 40℃
Integral overheating protection when temperature over 80℃
Temperature Class: -20/B
Service Life: over 15 years
Weight: 4.1kgs
Installation Environment:
Temperature: -25℃ ~ 55℃
Humidity: 40℃ 20% ~ 90%
No sharp shakes
No conductive dust
No corrosive gas
Fan's data:
Rated Voltage: 220V/50Hz
Rated Power: 21W
■ zero voltage switching, no inrush current, no grid voltage flicker
■ photoelectric isolation, strong anti-interference ability, immediate reaction (20ms)
■ compact design module, convenient connection
■ LED signal display
■ built-in auto-control fan
■ integral overheating protection (80℃)
■ durable casting design
■ touchable safety connection
■ protection class: IP30
■ no noise, no abrasion, keep long service life