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 | |



