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PD shielded room, also known as faraday, can be used to eliminate electromagnetic field interference, in order to make the suitable PD noise background when carry out partial discharge test in accordance with IEC 60270.

It is suitable for partial discharge experiment and impulse test in different voltage band (110kV, 220kV, 500kV, 750kV, 1000kV) of power cables, power transformers, instrument transformers, HV switches etc.

Shielding efficiency:

Frequency range 10KHz-100MHz, magnetic field≥80-110dB

Frequency range 1KHz-1GHz, electric field≥110dB

Isolation resistance: ≥500MΩ

Ground connection resistance: ≤1Ω

The design and size of the shielded room will be determined depending on the specific application. They are separated into a test and control room. Furthermore they are equipped with a PD-free lighting system, emergency lighting, and security loop. There is the option of equipping the room with air-conditioning and a crane.