Description
Protective current transformers are divided into: 1. overload protection current transformers, 2. Differential protection current transformers, 3. ground protection current transformer (zero -sequential current transformer)
The protection of the current intestines is mainly cooperated with the relay device. When a short -circuit overload such as the line occurs, the signal cutting fault circuit is provided to the relay device to protect the safety of the power supply system. The working conditions of the protection of the current transformer are completely different from the current transformer. The protection of the intestines began to work effective only when the current is several times larger than the normal current. Main requirements for protecting the intestines: 1. Essentials and reliable, 2. A large accurate limit coefficient, 3. enough thermal stability and dynamic stability.
Frequency Range:50Hz~10KHz
Dielectric Strength：4000Vrms/1 second between sec./Test
Impluse Withstand Voltage:5000V/1000MΩ min
Insulation Resistance:DC500V/1000MΩ min
Working Temperature :-35~80℃ 0~80%RH
Store Temperature:-40~85℃ 0~80%RH
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