一、 Scope of application
DLF7 type residual current operated circuit breaker (RCCB) without overcurrent protection meets GB16916.1, IEC61008, BS4293 and other standards, applicable to industrial and mining enterprises, commercial and home AC 50-60 Hz single-phase 240 (220V), three-phase 415 V (380 V), used for personal electric shock and equipment leakage protection, can also be used as an infrequent conversion of the line under normal conditions.
二、the product model and meaning
三、Features
1. Both sides of the dual-function terminal block, can be connected to the bus bar and single core wire at the same time.
2, with contact status indicator.
3, a variety of leakage current specifications, easy to achieve selective protection.
4, to prevent the malfunction caused by electronic equipment switching operation.
四、technical parameters
|
Type |
Un （V） |
Hz |
I△N |
Icn |
In（A） |
I△N (mA） |
I△No (mA） |
Maximum breaking time（s） |
||||
|
I△N |
2I△N |
5 I△N |
0.25A |
500A |
||||||||
|
DLF7 2P |
240 |
50-60 |
500A（In≤50A）（In＞50A） |
6000A |
6,10,16,25,32,40,50,63,80 |
30 |
15 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
|
50 |
25 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
||||||
|
75 |
40 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
||||||
|
100 |
50 |
0.2 |
0.1 |
0.04 |
- |
0.04 |
||||||
|
300 |
150 |
0.2 |
0.1 |
0.04 |
0.04 |
0.04 |
||||||
|
500 |
250 |
0.2 |
0.1 |
0.04 |
0.04 |
0.04 |
||||||
|
DLF7 4P |
425 |
50-60 |
500A（In≤50A）（In＞50A） |
6000A |
6,10,16,25,32,40,50,63,80 |
30 |
15 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
|
50 |
25 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
||||||
|
75 |
40 |
0.2 |
0.1 |
- |
0.04 |
0.04 |
||||||
|
100 |
50 |
0.2 |
0.1 |
0.04 |
- |
0.04 |
||||||
|
300 |
150 |
0.2 |
0.1 |
0.04 |
0.04 |
0.04 |
||||||
|
500 |
250 |
0.2 |
0.1 |
0.04 |
0.04 |
0.04 |
||||||
五、 Normal use conditions
1, the ambient air temperature: ambient air temperature -5 °C ~ 40 °C, 24 hours, the average does not exceed 35 °C.
2. Altitude: The altitude of the installation site does not exceed 2000 meters.
3. Atmospheric conditions: The relative humidity of the air at the installation site shall not exceed 50% at the maximum temperature of 40°C. When the average minimum temperature of the wettest month does not exceed 25°C, the relative humidity shall not exceed 90%.
4, installation categories: Installation category II, III.
5, installation of pollution levels: Pollution Level II.
6, the installation type: the use of standard rail installation.
7. Installation conditions: The external magnetic field of the installation site should not exceed 5 times of the geomagnetic field. RCCB should generally be installed vertically. The handle should be turned on to the power supply position. The installation site should have no significant impact and vibration.
8. Connection mode: Use screws to press the wiring or use busbar wiring.
六、 structure and working principle
DLF7 series leakage circuit breaker is mainly composed of sequence current transformer, trip unit, operating mechanism, contact system, extinguishing device, and insulation casing.
2, the working principle
When the line works normally, the residual current operated circuit breaker is in the closed position. When the line experiences electric leakage or electric shock, the signal output by the zero-sequence current transformer pushes the release action and cuts off the power within 0.1 seconds, thereby realizing the leakage protection function. .
七、the principle of work
八、installation dimensions
九、ordering instructions
1, product model, name; 2, pole number; 3, rated current; 4, rated residual operating current; 5, order quantity
