Study on the Residual Current Protection Device Technology

As an important electrical safety protection device in low voltage distribution system, residual current protec- tion device is to protect the insulation line leakage fault; the electric shock of the people plays an important role in fault. From the protection characteristics of residual current protective device to points, those can be divided into, residual cur- rent protection device for residual pulsating direct current and residual dc, according to the residual sinusoidal alternating current.

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