Knowledge

The role and principle of the transformer

Transformer is a kind of electrical equipment used for power conversion. It is an indispensable and important device in the power grid.

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The hazard of transformer damp and the method of moisture prevention

The copper (aluminum) particles scattered and spattered, causing the accident to spread and expand and develop into a short circuit between phases.

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Classification of transformer installation

1. Transformer installation is divided into three-phase bridge rectifier transformer structure according to the rectifier circuit form 2. Double reverse star type rectifier transformer structure with

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Transformer loss and temperature rise

When the transformer is running, the magnetic flux passing through the iron core will be lost in the iron core, and the current passing through the winding will also be lost in the winding.

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Why does the box-type transformer have a ground wire instead of a neutral wire?

The box-type transformer has no neutral line, because the sum of the electric vectors at any time is zero. The box-type transformer nameplate has specified star connection and delta connection.

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Principle of dry-type transformer

Dry-type transformer is a device that transforms AC voltage, current and impedance. When AC current is passed through the primary coil, AC magnetic flux is generated in the iron core (or magnetic core

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How to troubleshoot common faults?

Low-voltage circuit breaker, formerly known as air circuit breaker. It is mainly used to automatically break the circuit and cut off the power supply when the circuit is overloaded, short-circuited, a

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The influence of long-term overload of dry-type transformer

Dry transformers rely on air convection for natural cooling, or increase fan cooling, and are mostly used for small-capacity dry transformers such as high-rise buildings, high-speed toll stations, loc

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