Scope application

The electronic load limiting automatic controller (hereinafter referred to as the controller) is suitable for control circuits with an AC frequency of 50Hz and a working voltage of AC220V, and is powered according to the rated electrical power. When the electrical load exceeds the specified range value, the controller automatically cuts off the load power supply to achieve automatic control.

The main occasions for using control are in industrial and mining areas, enterprise employee dormitories, and construction site worker dormitories, to control the illegal use of electricity by employees and workers and achieve the goal of safe electricity use. The product has a compact structure and beautiful appearance, and is installed in parallel with DZ47 (C45).

Advantage

1. Fast action speed and quick response time;

2. Can be automatically triggered in case of power system failure; Can reduce short-circuit current by more than half;

3. After the fault line is disconnected by the circuit breaker, it can quickly and automatically reset and act multiple times within a few seconds to cooperate with reclosing;

4. During normal operation, the power consumption should be close to zero, and the maximum should not exceed 0.25% of the transmitted power;

5. The reliability should be higher than that of the circuit breaker operating simultaneously.

Main Technical Data

1. Working voltage: AC220 50Hz

2. Protection action current: 0.5A, 1A, 2A, 3A, 4A, 5A, 6A, 7A, 8A. 9A, 10A, 11A, 12A, 14A, 15A, 20A, 25A, 32A (other specifications can be customized).

3. Protection work delay time: 5s (1.2 times) with inverse time limit characteristics

4Automatic reset time: 30s+5s

5. Protection action current error: ± 10%

6. Power consumption: ≤ 1W

7. Electrical lifespan: 1x104

8. Mechanical lifespan: 1x104

9. Dimensions: 77x36x65mm (length x width x height)

10. Installation method: 35mm guide rail installation

Normal working conditions

1. The surrounding air humidity is -35 ℃~+75 ℃, and its average value within 24 hours does not exceed+25 ℃. The altitude does not exceed 2000m.

3. The relative humidity of the air at the installation site under atmospheric conditions shall not exceed 50% at a maximum temperature of+30 ℃; Higher relative humidity is allowed at lower temperatures, with the average lowest temperature of the wettest month not exceeding+20 ℃ and the average maximum relative humidity of that month not exceeding 90%. And taking into account the condensation that occurs on the surface of the product due to temperature changes.

4. Pollution level: Level 2.

5. Installation category: CategoryII

6. Installation method: Adopting international standard guide rails.

7. Control mode: automatic control

Product instructions

1. Connect the input terminal (IN) and output terminal (OUT) correctly according to the product identification. The load current should be less than the protection current value of the product.

2. The dual color LED on the panel indicates the status; When the indicator light turns green, the load power supply is connected and in operation; When the light turns red, the protection function is activated and the load power is cut off.

3. The load limit (current) protection action of the controller has inverse time limit characteristics: the greater the load exceeds the protection current value of the product, the shorter the protection action time of the product, and vice versa.

precautions

1. Before connecting the power supply, please carefully check whether the wiring is correct, whether the load size matches the product's current protection value, and whether the wiring screws are tightened, otherwise the product will be damaged.

2. After the product is powered on, do not touch live parts to avoid electric shock.

3. Due to the lack of short-circuit protection function in the product, when there is a short circuit at the input or load end, the load limiting protection function will not be activated and the product will be damaged.

4. Due to the automatic reset function of the product, after the product is protected and activated, the load (electrical appliance) should be immediately removed and the circuit should be checked. Otherwise, the product will frequently connect and disconnect the load, and eventually burn out the product or electrical circuit due to long-term frequent overload connection and disconnection.

Product wiring diagram

It is recommended to use the wiring diagram in Figure 2 for the assembly and use of protectors and circuit breakers

Outline and Dimensional Installation Diagram

When placing an order, it is necessary to specify the product model and quantity, for example: YJA3 5A 60 units; If there are special requirements, they should be noted separately.

For electrical maintenance and installation, it is necessary to ensure that the operator holds the qualification for electrical work and takes necessary power-off and insulation protection measures.