澳门六开彩天天开奖结果生肖卡_久久精品国产99精品亚洲_久久国产精品二国产精品_日日摸日日碰人妻无码老牲_18禁无翼乌口工全彩大全_少妇疯狂迎合欲仙欲死_√天堂中文官网在线_亚洲日韩一区二区色欲久久_日本中文字幕爱丝袜

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