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Export Advantageous Product Categories--Transformer

Export Advantageous Product Categories--Transformer

  • Categories:Power Material
  • Author:
  • Origin:
  • Time of issue:2020-07-27 12:13
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Summary description:Transformer is one of our advantageous products, which is widely praised by customers.

Export Advantageous Product Categories--Transformer

Summary description:Transformer is one of our advantageous products, which is widely praised by customers.

  • Categories:Power Material
  • Author:
  • Origin:
  • Time of issue:2020-07-27 12:13
  • Views:
Information

Transformer, also known as instrument transformer, is the general name of current transformer and voltage transformer. It can change high voltage into low voltage and large current into small current for measurement or protection system. Its main function is to convert high voltage or large current into standard low voltage (100V) or standard small current (5a or 1a, both refer to rated value), so as to realize the standardization and miniaturization of measuring instruments, protection equipment and automatic control equipment. At the same time, the transformer can also be used to separate the high voltage system to ensure the safety of personnel and equipment.

 

Common types

 

Electronic instrument transformer

 

The frequency conversion power sensor is an electronic transformer. The frequency conversion power sensor samples the input voltage and current signals, and then connects the sampling value with the digital input secondary instrument through the cable, optical fiber and other transmission systems. The digital input secondary instrument calculates the voltage and current sampling values, and can obtain the voltage RMS, current RMS and fundamental wave Voltage, fundamental current, harmonic voltage, harmonic current, active power, fundamental power, harmonic power and other parameters.

The transformer is divided into voltage transformer and current transformer. Its main function is to accurately transfer the voltage and current information of the primary system to the relevant equipment at the secondary side; the high voltage and high current of the primary system are transformed into the low voltage (standard value) and small current (standard value) of the secondary side, so as to standardize and miniaturize the measuring, measuring instruments and relays, and reduce the insulation requirements for the secondary equipment; the secondary side equipment and the secondary system and the high-voltage equipment of the primary system are well isolated in electrical aspects, so as to ensure the safety of the secondary equipment and personnel.  

 

Voltage transformer

 

The current transformer for measurement is mainly used to measure current, voltage, power, etc. under the normal working condition of the line. Main requirements of micro current transformer for measurement:

 

The insulation is reliable;

 

High enough measurement accuracy;

 

In case of large current due to fault of the line under test, the transformer shall be saturated (such as 500% rated current) in proper range to protect the measuring instrument. 

 

The current transformer for protection mainly cooperates with relay device to provide signal to the relay device to cut off the fault circuit in case of short circuit and overload of the line, so as to protect the safety of power supply system. The working conditions of the protection micro current transformer are completely different from the measurement transformer. The protection transformer only works effectively when the current is several times and dozens of times larger than the normal current.

 

Combined transformer

 

Combined transformer is a kind of transformer which combines voltage transformer and current transformer together. Combined transformer can change high voltage into low voltage and large current into low current, so as to measure electric energy.

 

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