The hottest spot check Zhejiang Jianshen Electric

Spot check: unqualified list of plastic case circuit breakers produced by Zhejiang Jianshen Electric Co., Ltd., Shanghai dada Electric Co., Ltd.

spot check: unqualified list of plastic case circuit breakers produced by Zhejiang Jianshen Electric Co., Ltd., Shanghai dada Electric Co., Ltd.

spot check: Zhejiang Jianshen Electric Co., Ltd Shanghai dada Electric Co., Ltd. and other enterprises produced plastic case circuit breakers on the unqualified list

16:12:48

China Quality

China Quality News on March 30, 2020, the Shanghai municipal market supervision and Administration Bureau announced the results of 2019 Shanghai plastic case circuit breaker product quality supervision and random inspection. This time, 20 batches of products were sampled, and 4 batches were unqualified after inspection

this supervision and random inspection is based on gb/t 14048 According to the standard requirements of "low voltage switchgear or careless scratching of sheet metal and control equipment Part 2: circuit breakers", the following items are tested: tripping limit and characteristics, dielectric performance, rated operating short-circuit breaking capacity, verification of operating performance, verification of dielectric withstand capacity, verification of temperature rise, verification of overload release

this spot check found that four batches of products did not meet the standard requirements, and the manufacturing enterprises (nominal) involved Zhejiang Jianshen Electric Appliance Co., Ltd., Shanghai dada Electric Co., Ltd., Guangdong Zhujiang switchgear Co., Ltd. and Shanghai Jingyi switchgear Co., Ltd

the unqualified items involved are: tripping limit and characteristics, rated operating short-circuit breaking capacity, verification of dielectric withstand capacity, and verification of temperature rise. Unqualified tripping limit and characteristics will cause the wrong action of the product in case of overcurrent, resulting in unnecessary property losses. In addition, the product cannot play the role of overcurrent protection in case of overload. It can also be used in the compression test of non-metallic materials such as cement and concrete. If the product does not act, it will cause damage to the equipment used. The export of the extruder fell by 7.3% in the first 10 months of this year There are potential safety hazards. Products with unqualified rated short-circuit breaking capacity cannot protect the faulty circuit; Verifying the dielectric withstand capacity is to verify the product's withstand capacity to overvoltage. If the project is unqualified, the insulation between conductive parts and between conductive parts and the ground and the operation of operators cannot be guaranteed; Verifying that the temperature can be controlled accurately at any rate within a certain range is to assess the working temperature of the product under the rated current. Temperature rise is an important test to ensure the service life and safe operation of the product. If the temperature rise is too high, the aging of insulating materials will be accelerated, resulting in the shortening of the service life of the product

Shanghai market supervision and Administration Bureau said that the unqualified products found in this spot check will be handed over to the local market supervision department for disposal according to law

2019 Shanghai plastic shell circuit breaker product quality supervision and random inspection unqualified products

serial number product name (nominal) trademark (nominal) specification model production date/batch number (nominal) manufacturer (nominal) Purchase place or channel main unqualified items 1 plastic shell circuit breaker nulldz20y-225//Zhejiang Jianshen Electric Appliance Co., Ltd. Shanghai Jingxi electronic and electrical appliance complete set Co., Ltd. rated operating short-circuit breaking capacity 2 plastic shell circuit breaker nulldam1n-250 200A ac400/415v 3P//Shanghai dada Electric Co., Ltd. Shanghai dada Electric Co., Ltd. verification of temperature rise 3 plastic shell circuit breaker nulldz20y-100 3P 100A//Guangdong Zhujiang switchgear Co., Ltd. Shanghai JD caiao e-commerce Co., Ltd. (store 1) tripping limit and characteristics, rated operating short-circuit breaking capacity 4 plastic shell circuit breaker nulljkm1s-250 ac690v/200a 3P//Shanghai Jingyi switchgear Co., Ltd. Shanghai Jingyi switchgear Co., Ltd. tripping limit and characteristics, verification of dielectric withstand capacity