How to detect if a DZ47LEII 50 1N leakage circuit breaker fails

The leakage protector has a special test button switch, and it is good to press the switch to trip. There is also a fire to the ground wiring method to try, if it trips, it is good.

The working principle of the leakage circuit breaker is to detect whether the live and neutral currents flowing through the leakage circuit breaker are equal.

For a normal circuit, the currents of the live wire and the neutral wire should be equal, and the magnetic fields generated by the windings of the live wire and the neutral wire cancel each other out on the zero sequence transformer inside the leakage circuit breaker. When the leakage occurs in the loop, the current intensity of the live wire and the neutral wire will be different (generally the live wire current is greater than the neutral line current, because a part of the current flows away through the ground wire), and the magnetic field generated by the two primary windings on the zero sequence transformer inside the leakage circuit breaker cannot be completely canceled out, and the secondary winding will induce a signal, which will be amplified and drive the electromagnetic tripping device to force the circuit breaker to trip.

It stands to reason that the short circuit of the line is burned, and the switch has not been turned off, indicating that it can no longer play a protective role.

There is a T-shaped experimental button on the leakage switch, you press it when you are energized, and see if the switch trips, if it trips, it means that the leakage protection function is still normal.

After using it for a few years, I really don't feel at ease to change the switch, and it's only 40 or 50 yuan.

The current of a washing machine with 500w is 500 220= so the line is sufficient.

The square line can withstand about 10a, that is, the line of 10*220=2200w can withstand about 2kw.

DZ47 represents the miniature circuit breaker, LE means with leakage, C63 indicates that the frame level current of the circuit breaker is 63A, the setting value can be within 63A, 230V represents the rated working voltage, 50Hz represents the rated working frequency, and 3KA indicates the breaking capacity of the circuit breaker.

DZ47LE-F63 series leakage circuit breaker.

Hereinafter referred to as the leakage circuit breaker) is suitable for AC 50Hz, rated voltage.

to 400V, rated current.

Leakage and overload protection for commercial and similar purposes in lines up to 50A to prevent fire or personnel accidents due to line leakage or electric shock.

It can also be used to protect against excessive voltage increases caused by grid faults.

DZ47LE-63 series leakage circuit breaker is a current action type electronic leakage circuit breaker, which consists of DZ47 circuit breaker and leakage tripper.

combined. When there is leakage in the protected circuit or personal shock, only the leakage current is required.

When the action current value is reached, the circuit breaker will act immediately to cut off the power supply, so as to play the role of leakage and electric shock protection, and the leakage circuit breaker can also play a protective role in the overload and short circuit in the circuit.

DZ47 series miniature circuit breaker is mainly suitable for AC 50Hz 60Hz, rated working voltage of 240V 415V and below, rated current to 60A circuit, the circuit breaker is mainly used for overload and short circuit protection of electrical circuits and equipment in modern buildings, and is also suitable for infrequent operation and isolation of lines.

DZ47LE 63 series leakage circuit breaker is suitable for AC 50Hz rated voltage 380V and below, rated current to 63A in the line, for leakage protection. When someone is electrocuted or the leakage current of the circuit exceeds the specified value, the leakage circuit breaker can automatically cut off the power supply to ensure personal safety and prevent accidents caused by leakage current in the equipment.

The leakage circuit breaker has the function of overload and short circuit protection, which can be used to protect the overload and short circuit of the line, and can also be used as the infrequent conversion of the line under normal circumstances.

The electromagnetic leakage protection switch is mainly used for leakage, electric shock, overload and short circuit protection of AC 50Hz and voltage 250V lines, and the product has the characteristics of reliable work, beautiful appearance and easy to use.

The electronic leakage protection switch is suitable for AC 50Hz or 60Hz, rated voltage 400V, rated current to 63A line, when the person is electrocuted or the leakage current of the power grid exceeds the specified value, the leakage protection switch can quickly cut off the fault power supply in a very short time, protect the safety of people and electrical equipment, and can also be used as an infrequent conversion of the line and infrequent start of the motor.

The model of the circuit breaker is DZ47 type, LE means with leakage protection function, the rated current is 63A, the voltage is 230V, the frequency is 50Hz, and the short-circuit current is 3KA for reference.

dz stands for Plastic Case Circuit Breaker.

47 Manufacturer's design code.

LE Electronic Leakage Circuit Breaker.

63 Current Rating 63 Amps.

LE means with leakage protection, product model.

DZ47 is a general model of domestic small air circuit breaker (also called micro breaker), which belongs to the same category of products as Schneider's C65 and ABB's S200

LE is the meaning of leakage, and the general suffix le is to indicate that there is a leakage protection function 63 indicates the frame current, that is, the maximum working current of this micro-break is 63A;

1N is this kind of micro-break belongs to the 1P+N type, and there are two pile heads in and out of the line, but there is no protective element at the N pole, which needs to be distinguished from the 2P micro-break. It is generally used at home, which not only satisfies the simultaneous disconnection of the line in the event of an accident, but also saves investment.

Leakage circuit breaker DZ15LE-100 490, the meaning of each letter and value:

1. DZ stands for plastic shell circuit breaker.

It's a design codename.

3. LE stands for electronic leakage circuit breaker.

Indicates the current of the shell level in amperes (a).

Represents the series, and 4 is the four poles.

Indicates a hydraulic-magnetic tripper.

7. The leakage circuit breaker is a switch that can automatically act when the leakage current in the circuit exceeds a predetermined value. Commonly used leakage circuit breakers are divided into two types: voltage type and current type, and current type is divided into electromagnetic type and electronic type. Leakage circuit breakers are used to prevent electric shock to people, and should be selected according to the different requirements of direct contact and indirect contact protection.

This is a circuit breaker, not leakage, the general household leakage circuit breaker model is DZ47LE-63 2 C40. The model you are talking about can only jump if the leakage current reaches 40A or more and lasts for a long time.

Circuit breaker (English name: circuit-breaker, circuit breaker) refers to a switchgear that can close, carry and break the current under normal circuit conditions, and can close, carry and break the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use, and the division of high and low voltage boundaries is relatively blurred, and generally more than 3kV is called high-voltage electrical appliances.

The circuit breaker can be used to distribute electric energy, start the asynchronous motor infrequently, protect the power supply line and the motor, and automatically cut off the circuit when they have serious overload or short circuit and undervoltage and other faults, and its function is equivalent to the combination of fuse switch and over/underheat relay. In addition, it is generally not necessary to change the parts after the fault current is switched off. At present, it has been widely used.

When the leakage current reaches 30 mA, it will trip, and some are 10 mA, you have to look carefully at the nameplate above.

dz47-63 c40 ln=30ma lno=15

Rated 63A action: 40A leakage action current 30mA leakage no action 15mA

The maximum leakage current is 30mA and the non-operating current is 15mA

In China, it is generally 30, and there are good 10 points.