Year1
- 1：
- DZ15LE-100/490
- 2：
- DZ15LE-40/490
- 3：
- DZ15LE-50/490
Series leakage circuit breaker (hereinafter referred to as circuit breaker) is a neutral-to-ground leakage protection device, suitable for AC leakage protection in circuits with rated voltage and rated current of up to. It can also be used for leakage protection. It prevents fire hazards caused by equipment insulation damage and ground fault current, and can be used to protect lines and motors from overload and short circuit. It can also be used for infrequent switching of lines and infrequent starting of motors. It is an electronic leakage protection appliance.
This product complies with, and is accurate.
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Normal working conditions
Normal working conditions and installation conditions
The altitude of the installation site does not exceed.
Ambient air temperature
The upper limit value does not exceed + ℃
The lower limit value does not exceed ℃
The average temperature within an hour does not exceed + ℃.
Atmospheric conditions
The relative humidity of the atmosphere is The maximum ambient temperature + ℃ does not exceed the maximum relative humidity that can be achieved at lower temperatures. The average maximum relative humidity of the wettest month does not exceed. At the same time, the monthly average minimum temperature of the month
Not exceeding +℃, taking into account the temperature changes that occur on the surface of the product, frost condensation occurs.
Installation conditions
Vertical installation, tilt in all directions does not exceed ℃.
Installation category
Circuit breaker The installation category is Category III
The pollution level is Class III.
The external magnetic field in Fujian where the earth leakage circuit breaker is installed shall not exceed times of the geomagnetic field in any direction.
Model and its meaning
Note: The code name of the overcurrent release for distribution protection is: The code name of the overcurrent release for motor protection is.
Classification
According to the number of poles of the circuit breaker, it is divided into two-pole, three-pole, Four-pole, three-pole and four-wire.
According to the purpose of the circuit breaker, it is divided into power distribution and motor protection (only applicable to three-pole).
Product specifications and parameters
Basic specifications and parameters
The maximum breaking time of the leakage circuit breaker is shown in the table
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The basic specifications and parameters are shown in the table
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Main technical parameters
The rated short-circuit breaking capacity should not be low According to the provisions of the table
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The rated residual making and breaking capacity should comply with the provisions of the table
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The overcurrent limit value in the main current that does not cause malfunction. The leakage circuit breaker is in The overcurrent limit value that does not cause malfunction when the multi-phase circuit is unbalanced load or balanced load is.
The number of operating cycles and test parameters should comply with the requirements in the table
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Overcurrent release Protection characteristics
Protection performance of leakage circuit breaker and over-current release for distribution protection (see table)
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Protection performance of leakage circuit breaker and over-current release for motor protection (see table) )
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Note
The leakage circuit breaker with a frame rated current of , has an agreed non-trip time of .
If the leakage circuit breaker surges current to the return time, and then the test current is reduced to the rated current, the leakage circuit breaker shall not trip.
Characteristic curve diagram (as shown in the figure)
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Structure and working principle
This series of leakage circuit breakers is an electronic leakage circuit breaker, mainly controlled electronically by a zero-sequence current transformer It consists of a leakage release and a circuit breaker with overload and short-circuit protection. All parts are installed in a plastic shell, and its structural principle is as shown in the figure. When there is leakage in the protected circuit or personal electric shock, as long as the leakage current reaches the operating current value, the secondary winding of the zero-sequence current transformer will output a signal and cause the circuit breaker to operate through the leakage release. Thereby cutting off the power supply provides protection against leakage and electric shock. Current value, zero sequence current
Appearance and installation dimensions
The appearance and installation dimensions of the leakage circuit breaker should comply with the requirements of the drawings and tables
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