The combination of DJ-ZBT□□□ series residual current protection relay and zero sequence transformers forms the ground fault protection system, it applies to TN,TT and IT power system. Via the ground current transformer to detect the ground leak current, the current protection relay compares the sensed current with the setting value and issues executing signal timely, make or break the alarm circuit, to prevent the accident spreading, and ensure the safety of personnel and equipment.
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