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Transformer

Transformer is one of the important electrical equipment in power system, it is similar to power transformer, is used to convert circuit voltage or current. However, the purpose of the power transformer switching voltage and current, is to transfer the power, voltage or current transformer transformation, the purpose of measuring and monitoring circuit voltage or current. In general, power transformer capacity is big, the change of the voltage or current error, transformer capacity is small, the change of the voltage or current error is small. In the measuring circuit, which is used to convert current, the current meter and relay is called a current transformer, power transformer is used to convert voltage, the voltage meter and relay of power transformer is called voltage transformer.

LZW32-12 outdoor pole mounted switch current transformer

be used along with ZW32 series high voltage vacuum circuit breaker.

LZW-35 Outdoor 35KV medium voltage current transformer

Outdoor 35KV medium voltage current transformer

LZZB71-35W2 outdoor full closed support type resin casting insulated current transformer

outdoor full closed support type resin casting insulated current transformer

LZZBW-10 Pillar type fully enclosed outdoor pouring current transformer insulation

Pillar type fully enclosed outdoor pouring insulation current transformer

LZZBW-10 outdoor dry type current transformer

This type of transformer can be divided into single and double changes; In a double change to exchange, to meet the needs of different grid capacity.

LZZBW-35B outdoor single phase epoxy resin casting type current transformer

35KV outdoor single phase epoxy resin casting type current transformer

JDZX11-10 10KV Indoor single-phase epoxy resin casting type voltage transformer

10KV Indoor single-phase epoxy resin casting type voltage transformer

JDZX11-15/20 15KV 20KV Indoor single-phase epoxy resin casting type voltage transformer

20KV Indoor single-phase epoxy resin casting type voltage transformer

The classification of the transformer:

  1. According to the principle of classification: can be divided into capacitive voltage transformer and voltage transformer electromagnetic voltage transformer, current transformer are electromagnetic current transformer.

  2. According to the winding insulation medium classification, there are dry, pouring, oil-immersed and inflatable (SF6).

  3. According to use classification: can be divided into two broad categories, voltage transformer, current transformer, can divide again for measuring, protection, special purpose and precise four classes.

  4. According to the installation site classification: can be divided into indoor type and outdoor type two kinds.

  5. According to the number of phase voltage transformer classification: can be divided into two kinds of single-phase, three-phase.

  6. Voltage transformer windings by several categories: duplex winding, three-winding two kinds.

  7. The classification of the current transformer according to the installation method: wear a wall type, support type and loading type 3 kinds.

  8. The classification of the current transformer according to the current ratio: a single variable ratio and changeable than two.


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