At present, most of the 10 kV distribution transformer metering boxes are installed on the transformer low and bad secondary casings, so as to eliminate the occurrence of electric power. To use this metering box well, pay attention to the following aspects:
First, in the monthly meter reading or irregular out of the box check box, transformers, wiring points, one or two wire contact and operation.
Second, because the metering box has been exposed to the sun and rain for a long time, check whether there is stripping, door lock rust, etc. If the box part is rusted, there will be small holes, and the thunderstorm will easily leak into the box, and the burning table will appear. Problems such as meters and transformers.
The third is to check whether the window glass is in good condition in front of the box. If it is damaged, it should be replaced immediately to prevent the animal from entering the power failure. When I read the meter, I found that there are sparrows in the metering box.
The fourth is to empty the secondary conductor of the distribution transformer into the corresponding plastic pipe, because the meter reading personnel are too close to the wire when observing the table code, and the wire is exposed to the outside wind for a long time, and the black skin sheath insulation layer is easily damaged and broken. The wire is emptied into the tube to prevent the occurrence of electricity.
KNBL1-32 Residual Current Circuit Breaker With Over Load Protection
KNBL1-32 TWO FUNCTION : MCB AND RCCB FUNCTIONS
leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
leakage breaker can protect against overload and short-circuit. It can be used to protect the line from being overloaded and short-circuited as wellas infrequent changeover of the line in normal situation. It complies with standard of IEC/EN61009-1 and GB16917.1.
KNBL1-32 Residual Current Circuit Breaker,Residual Current Circuit Breaker with Over Load Protection 1p,Residual Current Circuit Breaker with Over Load Protection 2p
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjthermalrelay.com