What is the role of insurance leakage? What is a leak?

The functions are: 1. It is used to protect the equipment from electric shock when leakage failure occurs and to protect people with fatal danger.

2. It has the function of overload and short circuit protection, which can be used to protect the overload and short circuit of the line or motor.

3. It can also be used as an infrequent conversion start of the line under normal circumstances.

About Leakage Protectors:

1. Leakage protector is also known as leakage circuit breaker and leakage switch.

2. When the power grid is grounded, the leakage protector can work normally.

3. According to its protection function and use, it can be divided into three types: leakage protection relay, leakage protection switch and leakage protection socket.

Category: 1. It only has the function of leakage protection and power-off, and must cooperate with fuses, thermal relays, overcurrent relays and other protection components when used.

2. At the same time, it has the function of overload protection.

3. At the same time, it has the function of overload and short circuit protection.

4. At the same time, it has the function of short circuit protection.

5. At the same time, it has the functions of short circuit, overload, leakage, overvoltage and undervoltage.

Possible misoperation of the leakage protector:

1. Since the leakage protector is a signal-triggered action, it will also produce a signal to trigger the leakage protector action under other electromagnetic interference, resulting in a misoperation.

2. When the power switch is closed and powered, an impact signal will be generated, causing the leakage protector to malfunction.

3. The sum of multi-branch leakage can cause overstepping misoperation.

4. Repeated grounding of the neutral wire may cause string mismovement.

Leakage switch. The function is to quickly cut off the single-phase power supply to the ground leakage electrical circuit, in order to avoid the dangerous consequences caused by leakage, mainly used to prevent the occurrence of leakage accidents, the principle of the switch is: there are two windings on an iron core, the main winding and the secondary winding, when there is no leakage, the input current and the output current are equal, and the two magnetic fluxes are on the core.

If the vector sum is zero, the electric potential will not be induced on the secondary winding, otherwise the voltage will be induced on the secondary winding, and the actuator will be pushed by the amplifier to trip the switch.

Leakage protection refers to leakage protectors.

The leakage protector is mainly used to protect the equipment from electric shock in the event of leakage failure and the fatal danger of personal electric shock, with overload and short-circuit protection functions, which can be used to protect the overload and short circuit of the line or motor, and can also be used as an infrequent conversion and start of the line under normal circumstances.

When there is leakage current in the main circuit, because the auxiliary contact and the silver separation tripper of the main circuit switch are connected in series into a loop, the auxiliary contact is connected to the separation trip and disconnects the air switch, AC contactor, etc., so that it trips and cuts off the main circuit. The auxiliary contact can also be connected to the sound and light signal device to send out a leakage alarm signal to reflect the insulation status of the line.

Leakage protector.

Leakage protector, referred to as leakage switch, also known as leakage circuit breaker, is mainly used in the event of leakage failure of equipment and protection against fatal danger of personal electric shock, with overload and short circuit protection functions, can be used to protect the overload and short circuit of the line or judgment motor, and can also be used as an infrequent conversion start of line carrying under normal circumstances.

Chinese name. Leakage protector.

Foreign name. Leakage Protector Pinyin. lòu diàn bǎo hù qì abbreviated name. Leakage switch.

Another name. Leakage circuit breakers.

Uses. When the equipment leaks and carries a fault, the power will be cut off in time.

The leakage protector is a device that automatically cuts off the power supply to protect life when the human body is electrocuted or the electrical appliance leaks.

When leakage occurs, when the leakage current is greater than (generally 30mA is the human safety current), the switch will jump off and cut off the power, so as to prevent people from being electrocuted due to short circuit of the circuit and prevent electric shock. The application of leakage protector in low-voltage power supply system can greatly improve the safety of power supply system operation, and play an extremely important role in further ensuring the safety of human beings and electrical equipment.

The principle is to pass the neutral line and the item line through the transformer inside the leakage protector at the same time, and the transformer can only detect the current of a single AC wire, and the transformer can not feel the current when the current of the neutral line and the phase line is the same.

When the leakage is not the same, the neutral line and the phase line current are not the same, the transformer feels the current and sends a signal, and the amplifier amplifies the signal to the electromagnet inside the leakage protector to give the action signal, and the tripper falls after the electromagnet acts, and the switch is opened to play a protective role.

Leakage protection is called leakage protection.

When the phase line of the protected line is directly or through an unexpected load to the ground, and produces an approximate sinusoidal waveform and its effective value is a slowly changing residual current, when the current is greater than a certain value, the protector cuts off the line and plays a holding role.

It may be the abbreviation of leakage protector, leakage protector is a kind of protection device, which determines whether to jump the power switch according to the size of the leakage current of the equipment, so as to provide protection for the safety of the human body or equipment.

As follows:

The first one, empty opening, now the basic empty opening of the home line is in the first place, the main role is to protect the opening circuit, to prevent the opening short circuit or overload caused by the upper level of air opening or leakage tripping. It's like water, which eventually flows into the sea.

Second, the self-resetting overvoltage and undervoltage protector can protect household appliances from losses caused by voltage fluctuations, and will be automatically disconnected if it exceeds the specified value, and can detect the voltage of household lines, and the voltage will return to normal The overvoltage and undervoltage protector can be connected to the circuit within the specified time, and no one needs to wait on duty.

The third to sixth, leakage protector, to protect their own circuit safety factor, short-circuit, overload and leakage will cut off its own circuit power supply, so as to avoid other circuits being affected and causing unnecessary trouble. Leakage protectors are generally used in socket circuits.

Simplified: The electric switch refers to the power switch and leakage protection switch. Also known as gate knife.

The operating principle of the leakage protection switch is: there is a main winding and a secondary winding on an iron core: the main winding is divided into two windings, one of which is the input current winding and the other is the output current winding.

When there is no leakage, the input current and the output current are equal, and the vector sum of the two magnetic fluxes on the core is zero, and the electric potential will not be induced on the secondary winding, otherwise there will be an induced voltage formation on the secondary winding, which will be amplified to push the actuator and trip the switch.