First. The operating principle of isolating switch 1. It is forbidden to use an isolating switch to pull in load equipment or load lines. 2 . It is forbidden to open and close the no-load main transformer with an isolating switch. 3 . The following operations are allowed using the isolating switc...

1. Classification of box-type transformers Box-type transformers are divided into European style and American style. The American style has a small volume (Volume0), lower load capacity, and low power supply reliability. The European style has a larger volume, and the load capacity and power sup...

1.Why does the transformer core need to be grounded? When the transformer is in operation, the iron core, the fixed iron core, and the metal structure of the winding, parts, components, etc. are all in a strong electric field. Under the action of the electric field, they have a higher ground pote...

Transformer is a continuous operation of static equipment, more reliable operation, less chance of failure.But because the vast majority of transformers are installed outdoors, and are affected by the operation of the load and the influence of the power system short circuit fault, in the process ...

With the rapid development of new energy, China has become the largest country of hydropower, wind power, solar power generation, and renewable energy accounts for continuous increases. To make these volatility, intermittent clean electric energy, upgrade the power transmission technology is impe...

When the overcurrent overheating failure is eliminated, the fuse element can be automatically restored to a low resistance state. This avoids maintenance changes and the opening and closing states of successive loops that can cause circuit damage. Due to its special manufacture, the reset fuse ha...

Power Fuse is a generally accepted means to protect power transformers in distribution substations. The main purpose of the Power fuse is to provide a permanent fault interruption. Fuse is an economical alternative to circuit switcher or circuit breaker protection. Fuse Fuse protection is usually...

A fuse is an insurance policy that burns wires to prevent too much electricity. In fact, the fuse is a kind of easy to burn fine alloy wire, it can only pass through the normal electric current, when the electrical flow exceeds a certain value, it will heat and fuse and cut off the power supply, ...

With regard to the product safety of the device and the life/reliability of the fuse, the right choice is important. Safety principles are considered only when properly selected and used in an agreed manner the determination function of the fuse chain can be used as a protective part. “Any ...

Fuse, installed in the circuit equipment, to ensure the safe operation of circuit components, the use of high resistivity, low melting point of silver copper alloy made, in the circuit work, the external working environment temperature, the internal pulse current and so on will affect the service...

1. Normal operating current. 2. The voltage applied to the fuse. 3. The current that needs to be disconnected from the fuse. 4. Minimum and maximum time allowed for abnormal currents to exist. 5. Ambient temperature of the fuse. 6. Pulse, Impact Current, inrush current, start current and circuit ...

First, the appearance of the inspection, fuse holder after a period of use, there may be some problems, so when used, to often check it, for its appearance should be checked first. Second, the function of the inspection. In order to ensure that the fuse holder has a good use effect, some of its f...