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Overview:
The power isolation filter is installed between the output of voltage regulator and the input of non corona test transformer, or between the output of generator and the intermediate transformer, which is used to suppress the external interference signal channeling through the power line and the inherent harmonic component of generator output voltage, so as to make the background interference noise of partial discharge test lower than 5 ~ 10pC. According to different requirements, it can be divided into single-phase power supply isolation filter, three-phase power supply isolation filter, single-phase power supply filter and three-phase power supply filter.
Technical index：
Working frequency: power frequency (50 Hz) or multiple frequency (100 ~ 400 Hz)
rated voltage: 220 V, 400 V, 800 V and 1600 V
Single phase capacity: 3 ~ 300kVA
Three phase capacity: 30 ~ 1000kVA
Attenuation characteristics: 10kHz ~ 100kHz ≥ 40dB, 100kHz ~ 1000khz ≥ 60dB
Dry natural cooling structure
