How to Apply for Yunnan Grade 5 Power Installation, Repair, and Testing Qualification License



        If a power engineering company in Yunnan wants to engage in power installation, repair, and testing activities, it needs to apply for the corresponding qualification certificate first. The Grade 5 power testing qualification license allows for high-voltage power testing activities below 110kV. Although its value is not high, the application difficulty is low, making it very suitable for small and medium-sized power engineering companies to apply. So, specifically, how to apply for the Yunnan Grade 5 power installation, repair, and testing qualification license? This article provides a brief introduction for you.



        If a power engineering company in Yunnan wants to successfully apply for the Grade 5 power testing qualification license, it needs to prepare in four aspects: funds, equipment, technical personnel, and site. This article gives a brief introduction for everyone.



        The application requirements for Yunnan Grade 5 installation, repair, and testing qualification are as follows:

        1. Have legal person qualification and a sound organizational structure;

        2. Registered capital not less than 4 million yuan, with assets above 4.8 million yuan;

        3. The technical director has more than 3 years of experience in power facility testing management and holds a professional technical appointment qualification of engineer or above in the power specialty;

        4. Have no fewer than 10 technical and economic professionals (including technicians, senior technicians, and workers), among whom there are no fewer than 5 engineers, senior engineers, and engineering technicians in the power engineering specialty;

        5. Equipped with at least 1 safety management personnel, and the safety engineer holds a professional technical appointment qualification of engineer or above in the power specialty;

        6. Have a fixed business site with a total area of no less than 400 square meters, and have a professional testing laboratory and testing equipment capable of testing power transmission, power supply, and power receiving facilities at voltage levels below 10kV;

        7. Have a sound technical archive management system.



Equipment List for Grade 5 Power Testing Qualification
Equipment Category Equipment Name Unit Quantity Specification Model
I. High Voltage Generation Equipment DC High Voltage Generator Set 1 DC: 60kV/2mA YTCZG-60kV/2mA
Power Frequency Withstand Voltage Test Device Set 1 AC: 5kVA/50kV YD-J-5kVA/50kV
Variable Frequency Series Resonance Test Device Set 1 75kVA/75kV/1A   
30~300HZ
YTC850-75kVA/75kV
II. Electrical Measuring Instruments Loop Resistance Tester Unit 1 DC: ≥100A YTC5501-100
Three-phase Relay Protection Tester Unit 1 Three-phase voltage and current each 2 groups YTC1000
Transformer Volt-ampere Characteristic Tester Unit 1 500V/ YTC8750B
Ground Resistance Tester Unit 1   UT521
Transformer DC Resistance Tester Unit 1 DC: ≥10A YTC316-10
Transformer Turns Ratio Tester Unit 1 Digital 0.5 class YTC3317
Circuit Breaker Characteristic Tester Unit 1   YTC3980
III. Common Instruments and Meters Megohmmeter Piece 1 DC: 2500V YTC2671
Megohmmeter Piece 1 DC: 500V YTC2671
Digital Dual-clamp Phase Volt-ampere Meter Piece 1 Measuring current 1mA~ YTC2220