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Zhejiang Shuorui Electric Co., Ltd.

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What is the scope of application of surge protector

The power surge protector is a new type of surge protector, which is mainly used in the low-voltage power supply system of power generation enterprises and power consumption enterprises. It is installed in low-voltage incoming cabinet, power supply cabinet, power distribution cabinet, rectifier cabinet, distribution box and lighting box to protect electrical equipment from damage caused by lightning strike and operating overvoltage invasion, and to limit atmospheric overvoltage, breaking overvoltage caused by various switches and various operating overvoltage.

01

2021

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11

What are the types and precautions of leakage switches

Leakage switch, also known as leakage protector and leakage circuit breaker, is mainly used for electric shock protection when leakage fault occurs in equipment and for people in danger of life. It has overload and short circuit protection function, which can be used to protect overload and short circuit of circuit or motor, and can also be used as non-frequent conversion start of general circuit.

08

2021

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10

A brief description of the production method of a release

As the main functional component of the circuit breaker to realize the above functions, the tripper can realize the overload protection and short circuit protection of the circuit. The trip lever of the existing release is a lever element for over-current action and momentary action. When the delay is tripped, the tripper can close the circuit breaker switch of the delay trigger mechanism, and when the instant is tripped, the tripper can close the circuit breaker of the instant trigger mechanism. Although the existing tripping device can realize the above-mentioned tripping functions of over-current long-delay tripping and short-circuit instantaneous tripping, when the input current exceeds several times of the rated current and is lower than the short-circuit current, the existing tripping device cannot be tripled in time, which may still cause line damage.

30

2021

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09

A new type of release with simple structure, convenient assembly and good reliability

The tripping device includes an electromagnetic tripping device, a compound tripping device, an electronic tripping device, etc. The principle of the electromagnetic release is that when the current is large enough, the generated magnetic field force overcomes the reaction force spring and attracts the armature to hit the traction rod, thereby driving the mechanism to act, cutting off the circuit, and playing a protective role. However, the existing release on the market has a complex structure and complex assembly, which greatly reduces the production efficiency of the release. Meanwhile, in the existing tripping device on the market, both ends of the coil assembly are electrically connected to the circuit board through the lead wire, but the joint is easily broken through the lead wire connection, which causes the tripping device to lose its due function and reduces the overall reliability of the tripping device.

16

2021

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09

Tripping device with good tripping stability

The trip is a device mechanically connected or integrated with the circuit breaker to release the holding mechanism and automatically open the circuit breaker. With the development of scientific and technological personnel, there are various tripping devices on the market at present.

30

2021

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08

What are the types and functions of circuit breaker tripping devices?

The traditional circuit breaker protection function is at release, through the role of the mechanical system to achieve, the effect is not ideal. In order to prevent the failure and damage of electrical equipment when the power supply network is abnormal, more reliable and protective circuit breakers are gradually developed on the basis of traditional circuit breakers. With the development of microelectronics technology and the emergence of integrated circuits, the volume of ordinary electronic circuits has been greatly reduced, so there has been a multi-function release based on ASIC, which has promoted the development of multi-function circuit breakers. At the same time, the development of microcomputer technology also provides conditions for the intelligence of low-voltage electrical appliances. Intelligent

18

2021

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08

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