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The benefits of correct wiring of current transformers for short circuit inspection
Aug 12 , 2021
The wiring method of the current transformer is not very complicated, there are only four wiring forms. The four types of wiring will be listed below. Transformer 1. The first is the wiring method of a single current transformer. Under the condition of only single-phase current, it is suitable to measure one-phase current or three-phase load balance, and the three-phase status can be understood by...
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What are the wiring principles of current transformers that are widely used
Mar 13 , 2022
Electrical debugging is a key content in the work of power installation engineering projects. In the electrical debugging work, the secondary circuit inspection is also a key adjustment content. It is related to the precise measurement, maintenance, communication and other functions of the power supply system. A prerequisite that cannot be fully utilized. In the secondary circuit, whether the wiri...
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The basic concept of zero-sequence current protection
Mar 13 , 2022
The basic concept of zero-sequence current protection is based on Kirchhoff's current law: the algebraic sum of the complex currents flowing into any node in the circuit is equal to zero. When the line and electrical equipment are normal, the vector sum of the currents of each phase is equal to zero. Therefore, the secondary winding of the zero-sequence current transformer has no signal output, an...
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Leakage protection can save lives, The installation of this type of inductor must be clear
Jun 18 , 2022
1. Residual current transformer wiring Before installing the residual current transformer, it is necessary to identify the phase line, N line and PE line in the power network. The phase line and the N line should pass through the residual current transformer together as much as possible, and the PE line should not pass through the transformer. In the system software, if the N line does not pass th...
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Overview of zero phase current transformers
Jul 19 , 2022
The zero phase current transformer is a line fault current monitor. Generally, there is only one iron core and secondary winding. When using, the primary three core cable is passed through the iron core window of the transformer, and the secondary wire is connected to a special relay, and then the output terminal of the relay is connected to a signal device or an alarm. system. Under normal circum...
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The Difference of Zero Current Transformer and Current Transformer
Jul 21 , 2022
The zero current transformer is a current monitor of line fault. It has only one iron core and secondary winding. When it works, the primary three-core cable is passed through the iron core window of the transformer, and the secondary one is connected to the relay with lead wire, and then the output terminal of the relay is connected to the signal device or alarm system. Under normal circums...
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