欧美国产日韩在线播放_欧亚日韩在线_欧洲成人午夜精品无码区久久_在线免费亚洲无码视频_国产成人精品区在线观看_亚洲av麻豆天堂_亚洲所有免费观看视频_国产av永久网_亚洲国产一区日韩欧美_亚洲AV日韩AV天堂影片精品一

01  KYauthentication,The certification of general electrical equipment for mining refers to the safety certification of electrical equipment (excluding cables and wires) used in coal mine areas without gas, coal dust and explosive hazards, as well as other similar underground industrial production departments such as non coal mines.

02  Common products that apply for KY certification include:Electric control cabinet, motor, etc

03 Obtained KY certificationElectrical equipment should have nameplates, warning signs, and permanent markings "KY" firmly placed in prominent locations on the equipment

The validity period of the general qualification certificate for mining is generally 5 years

05 Applicable standard: GB/T 12173-2008 General Electrical Equipment for Mining

Applying for KY certification does not require factory inspection, which is different from applying for MA/KA certification.

The required documents for applying for KY certification in 07:

---Product manual

---Enterprise standards

---Product drawings (circuit diagrams, PCB diagrams, assembly drawings, etc.)

---Sample