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Zhejiang Shuorui Electric Co., Ltd.

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Plastic shell excitation auxiliary manufacturer: the role of leakage protector

Plastic shell excitation auxiliary manufacturers believe that the full name of leakage protector is residual current action protector, which is mainly composed of three parts: detection element, intermediate amplification link and operation actuator. When leakage occurs, abnormal current and voltage signals will appear. The leakage protection device detects this abnormal current or voltage signal, and through signal processing, prompts the actuator to act, and quickly cuts off the power supply through the switch device to implement leakage protection.

15

2022

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02

What is the difference between air switch and leakage switch?

Generally speaking, an air switch is installed at the outlet end of the instrument because the line is relatively far away. If a leakage switch is installed, the failure rate will increase relatively, which may be caused by the wire. Install the leakage switch before using the equipment.

10

2022

/

02

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

/

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

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