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Disconnecting Switch

Disconnecting Switch A disconnecting switch (or disconnector) is a switching device that, when in the open position, has a specified insulation distance between its contacts and a clear disconnection mark; when in the closed position, it can carry current under normal circuit conditions and curre... Read More

Single-phase transformers: a new energy-saving system for urban lighting

Single-phase transformers: a new energy-saving system for urban lighting Three-phase systems are commonly used in my country’s low-voltage power distribution systems. Currently, the power supply method in low-voltage distribution networks is characterized by “small capacity, dense dis... Read More

Common Electrical Knowledge in Daily Life

Three-phase alternating current is a combination of three alternating currents, with the same frequency, but the phases are offset by 120 degrees. The voltage between the live wire and the neutral wire is called the phase voltage (between the live wire and the neutral wire). The voltage between t... Read More

Amorphous Solid Core For Transformer

Amorphous Solid Core For thousands of years, the metals and alloys used by humankind have been materials with crystalline structures, in which atoms are arranged in a three-dimensional, ordered manner, forming a periodic crystal lattice structure. When amorphous alloys are rapidly cooled from a l... Read More

Silicon steel core for dry-type transformers

Silicon steel core for dry-type transformers Silicon steel sheets are an indispensable soft magnetic alloy in the power, electronics, and military industries, and are also the most widely used functional metallic material, primarily used as the core of various motors, generators, and transformers... Read More

Silicon steel cores for oil-fired power plants and transformers.

Silicon steel cores for oil-fired power plants and transformers. Silicon steel sheets are an indispensable soft magnetic alloy in the power, electronics, and military industries, and are also the most widely used functional metallic material, primarily used as the cores of various motors, genera... Read More

How to Diagnose Faults in Dry-Type Transformers by Sound

How to Diagnose Faults in Dry-Type Transformers by Sound Dry-type transformers typically operate without any noise, which is normal. However, some processes may produce significant noise, indicating that the sound can help identify potential faults. In fact, the sound of a dry-type transformer ca... Read More

Reasons for Overheating of Dry-Type Transformer Cores

Reasons for Overheating of Dry-Type Transformer Cores When a dry-type transformer is working, the magnetic field of the current in the electromagnetic coil causes the magnetic flux to change alternately. This changing magnetic flux induces an electromotive force (EMF) in the core. This induced EM... Read More

Handling Fires in Dry-Type Transformers

Handling Fires in Dry-Type Transformers 1. Fires Caused by Insulation Aging (Fire faults in dry-type transformers are relatively common during operation) Statistical analysis shows that 50% of burnt dry-type transformers are caused by insulation aging leading to breakdown. During operation, dry-t... Read More

Features of Vacuum Circuit Breakers

Features of Vacuum Circuit Breakers: ① Small contact gap: The contact gap of a 10kV vacuum circuit breaker is only about 10mm, resulting in less operating work, shorter mechanical travel, and longer mechanical life. ② Short arcing time, independent of the switching current, typically only half a ... Read More

Main Structure for Vacuum circuit breaker

Main Structure Vacuum circuit breakers mainly consist of three parts: a vacuum interrupter, an electromagnetic or spring operating mechanism, and a support frame. According to different switch types, there are externally shielded ceramic vacuum interrupters, internally sealed cup-shaped longitudi... Read More

What is current transformer burden?

What is current transformer burden? In a current transformer (CT), burden refers to the total impedance (resistance and reactance) presented to the CT’s secondary winding by the connected measuring device (such as an ammeter, relay, or meter). It is typically expressed in volt-amperes (VA) ... Read More
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