Those who have obtained the Class III testing qualification for electric power facility installation (repair, testing) can engage in testing activities for electric power facilities with voltage levels below 110 kV. Applicants shall meet the following conditions: 1. Legal person status and a sound organizational structure; 2. Registered capital and net assets of more than 12 million yuan; 3. More than 3 consecutive years of experience in testing activities for lines and substation facilities above 10 kV; 4. The technical director and safety director shall have more than 5 years of experience in managing electric power facility testing and hold intermediate or above technical qualifications in electric power related majors; 5. More than 20 professional technical and economic management personnel, including more than 15 engineering and technical personnel in electric power related majors; 6. More than 10 electricians with grid operation permits, including more than 3 high-voltage electricians and more than 6 special electricians; 7. A sound and effective safety production organization and system, carrying out safety training in accordance with the law, with more than 3 full-time safety supervision personnel; 8. A fixed business site with a total area of more than 600 square meters, various professional testing laboratories and testing equipment for electric power facilities with voltage levels above 110 kV; 9. A sound technical file management system.

Application for Class III testing qualification test equipment configuration table







































































































































































































































No. Equipment Name Unit Quantity Specification Model
1 High Voltage Generation Equipment
1 DC High Voltage Generator Set 1 DC: 200kV/3mA ZGF-200kV/3mA
Set 1 DC: 120kV/2mA ZGF-120kV/2mA
2 Power Frequency Withstand Voltage Test Device Set 1 AC: 10kVA/100kV GTB-10kVA/100kV
Set 1 AC: 5kVA/50kV YDJ-5kVA/50kV
3 Variable Frequency Series Resonance Test Device Set 1 500kVA/000kV/2.5A

　　30～300Hz		 HTXZ-500kVA/200kV
4 Induction Withstand Voltage Test Device Set 1 5kVA/360V

　　150Hz		 SBF-5kVA/500V
2 Electrical Measuring Instruments
1 High Voltage Dielectric Loss Tester Unit 2 1. Dielectric measurement accuracy: 1%

　　2. Capacitance accuracy: 0.5%

　　3. Anti-interference frequency conversion		 HTJS-V
2 Loop Resistance Tester Unit 2 DC: ≥100A HTHL-100A
3 Transformer Volt-Ampere Characteristic Tester Unit 1 1100V/5A HTFA-103
4 Ground Resistance Tester Unit 1 Heterodyne method HTDW-5A
5 Capacitance and Inductance Tester Unit 1   HTRG-H
6 Ground Continuity Tester Unit 1 DC: 1A HTDT-10A
7 Transformer DC Resistance Tester Unit 2 DC: ≥10A HTZZ-10A
8 Transformer Turns Ratio Tester Unit 1 Digital, 0.5 class HTBC-H
9 Transformer Winding Deformation Tester Unit 1 Frequency response method HTBX-H
10 On-load Tap Changer Tester Unit 1 I≧1A HTBYC-3000
11 Circuit Breaker Characteristic Tester Unit 2   HTGK-III
12 Zinc Oxide Arrester Resistive Current Tester Unit 1   HTYB-3H
13 Three-phase Relay Protection Tester Unit 2 Three-phase voltage and current each 2 groups HT-1200
14 Lightning Counter Calibrator Piece 1   HTFZ-III
15 Insulation Resistance Tester Unit 2 DC: 0～5000V 200G(Ω)

　　Short circuit current ≥3mA		 GM-5kV
3 Oil and Gas Testing Instruments
1 SF6 Leak Detector Unit 1 Sensitivity 1ppmv XP-1A
2 SF6 Gas Moisture Tester Unit 1   HTWS-V
4 Common Instruments and Meters
1 Megohmmeter Piece 1 DC: 2500V HT2671
2 Megohmmeter Piece 1 DC: 500V HT2670
3 Digital Dual-clamp Phase Volt-ammeter Piece 1 Measuring current 1mA～5A SMG2000B