The post discusses ZCT4XX Zero Phase Current Transformer, its electrical specifications, and the difference between zero current transformers and current transformers based on their working states and primary coil configurations.
The ZCT411 is a customizable zero phase sequence current transformer with an 800A rating, 52±5Ω resistance, and a 2500Vrms dielectric voltage. It operates on electromagnetic induction, but unlike standard current transformers that sample one phase, it measures the vector sum of three-phase currents, which should equal zero under normal conditions.
The ZCT410 Zero phase current transformer, customizable and rated at 400A DC with a resistance of 42±5Ω at 25℃, withstands voltages up to 2500Vrms and outputs 7±1mV. It operates on electromagnetic induction, featuring a closed iron core, and primary windings that measure line current.
The ZCT409 is a zero phase current transformer available for direct sale, with custom specifications like a 225A rated current and 11±3Ω resistance. It operates on Kirchhoff’s current law, outputting no signal under normal conditions but activating tripping mechanisms during ground faults for network protection.
The ZCT408 is a customizable zero sequence transformer with a rated current of 100A and a resistance of 13±3Ω. It withstands up to 2500Vrms, outputting 25-30mV. Its error arises from iron core reluctance, consuming current for excitation, causing a vector difference between primary and secondary currents, including ratio and phase angle discrepancies.
ZCT407 is a customizable transformer for EV charging, with specifications like 630A rated current, 52±5Ω resistance at 25℃, and a 2500Vrms dielectric voltage. It enables zero current sensor protection by monitoring unbalanced currents and detecting single-phase grounding faults, enhancing the safety of electrical systems.
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