Knowledge

Cooling method of dry-type transformer

Dry-type transformers are widely used power transformer equipment. There are two cooling methods for dry-type transformers, which are divided into natural air cooling (AN) and forc

Use conditions of GCS low voltage switchgear

1. The ambient air temperature is not higher than +40°C and not lower than -5°C. The average temperature within 24 hours must not be higher than +35°C. When it exceeds, the capacit

Structure description of GCS low voltage switchgear

The basic structure of the cabinet is assembled from KS profiles, the standard modulus is E=20MM, and the cabinet is electrostatically sprayed after pickling and phosphating. The i

Classification of switchgears

From an application point of view, the switchgear can be divided as follows: 1. Incoming line cabinet: also called power receiving cabinet, it is the equipment used to receive elec

What is a switchgear?

The switchgear consists of one or more low-voltage switchgear and related control, measurement, signal, protection, regulation and other equipment. It is a combination that the man

Components of dry-type transformers

1. Iron core The iron core is the main magnetic circuit part of the dry-type transformer. The core is usually made of hot-rolled or cold-rolled silicon steel sheets with a high sil

Operation and maintenance of transformers

1. Prevent transformer overload operation: If the transformer is operated with overload for a long time, it will cause the coil to heat up, and the insulation will gradually age, c

Common faults and solutions of transformers

1. Oil leakage at the weld It is mainly due to poor welding quality, false welding, desoldering, pinholes, sand holes and other defects in the weld. The power transformer is covere

The basic structure of the transformer

Usually power transformers are mostly oil-immersed. The iron core and windings are immersed in an oil tank filled with transformer oil, and the end of each winding is led to the ou

Selection of prefabricated substation

1. Selection of the power receiving equipment on the high voltage side of the prefabricated substation For 10kV small and medium-sized power users, high-voltage load switches of bo

Main features of prefabricated substation

The prefabricated substation is mainly composed of electrical units such as multi-circuit high-voltage switch systems, armored bus bars, integrated substation automation systems, c

What is a prefabricated substation?

Prefabricated substation: It is a complete set of equipment pre-installed and type tested, usually composed of high-voltage power distribution equipment, transformers, and low-volt