Application and review of the license for installation (repair, testing) of electric power facilities (third-level testing complete device set),
These conditions are formulated in accordance with the "Measures for the Administration of Licenses for Installation (Repair, Testing) of Electric Power Facilities" (Order No. 28 of the State Electricity Regulatory Commission) and relevant standards of the electric power industry, combined with the actual management of installation (repair, testing) electric power facility licenses and the electric power construction market.
Article 2 These conditions apply to the application, change, renewal and other licensing matters of installation (repair, testing) electric power facility licenses nationwide. During the construction and operation process, installation (repair, testing) electric power facility enterprises shall, in accordance with national standards, electric power safety production and other regulatory requirements, be equipped with machinery and equipment suitable for the construction and operation activities according to the actual needs of the project.
Article 3 The conditions for construction machinery and equipment required for installation (repair, testing) electric power facility licenses at all levels include transportation tools, tower assembly and wire laying equipment, insulating oil and gas construction equipment, crimping, welding and cutting equipment, and measurement, testing and power equipment. (See Appendix 1 for details: Third-level testing complete device set)
Article 4 The conditions for construction machinery and equipment required for repair (installation, testing) electric power facility licenses at all levels include transportation tools, line maintenance construction equipment, insulating oil and gas construction equipment, crimping, welding and cutting equipment, and measurement, testing and power equipment. (See Appendix 2 for details)
Article 5 The conditions for construction machinery and equipment required for testing (installation, repair) electric power facility licenses at all levels include high-voltage generation equipment, electrical measuring instruments, insulating oil and gas testing instruments, and common instruments and meters.
Hubei Yitiancheng Electric Power Equipment Co., Ltd. specializes in the R&D and production of testing qualification equipment. The 2017 national general version of the third-level testing equipment list is as follows:
| No. | Equipment Name | Quantity | Model | Main Technical Parameters |
| 1 | DC High Voltage Generator | 1 set | YTCZG-200kV/3mA | Output voltage: 200kV Output current: 3A Voltage measurement accuracy: digital display ±(1.0% reading ±0.2kV) Current measurement accuracy: digital display ±(1.0% reading ±2) 0.75UDC1mA function button, convenient for zinc oxide arrester test |
| 1 set | YTCZG-120kV/2mA | Output voltage: 120kV Output current: 2A Voltage measurement accuracy: digital display ±(1.0% reading ±0.2kV) Current measurement accuracy: digital display ±(1.0% reading ±2) 0.75UDC1mA function button, convenient for zinc oxide arrester test |
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| 2 | Power Frequency Withstand Voltage Test Device | 1 set | YD-J-10kVA/100kV | AC, capacity: 10kVA, output voltage: 100kV |
| 1 set | YD-J-5kVA/50kV | AC, capacity: 5kVA, output voltage: 50kV | ||
| 3 | Variable Frequency Series Resonance Test Complete Device Set | 1 set | YTC850-500kVA/200kV | YTC850-500kVA/200kV variable frequency series resonance test complete device set can complete the following tests: 1. AC withstand voltage test of 110kV/63000kVA main transformer 2. AC withstand voltage test of 110kV/300mm2 cable 0.8km 3. AC withstand voltage test of 110kV high-voltage switchgear and GIS The configuration of YTC850-500kVA/200kV variable frequency series resonance test complete device set is as follows: 1 Excitation transformer JLB-18kVA/2.5/5/10kV/0.4kV 1 unit 2 Variable frequency power supply YTC850-18kW/220/380V 1 unit 3 High-voltage reactor DK-83.3kVA/45kV 6 units 4 Capacitive voltage divider FRC-200kV/750pF 1 set |
| Induction Withstand Voltage Test Device | 1 set | YTC1102-5kVA | 1. Input voltage: three-phase 380V 50Hz sine wave 2. Output voltage: 0-500V 150Hz waveform distortion ≤5% 3. Output capacity: 5kVA 4. No-load operation time: ≤5 minutes 5. Load operation time: 40~60S |
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| 4 | High Voltage Dielectric Loss Tester | 2 units | YTC309 | Capacitance range: Internal high voltage: 3pF～60000pF/10kV 60pF～1μF/0.5kV External high voltage: 3pF～1.5μF/10kV 60pF～30μF/0.5kV Resolution: up to 0.001pF, 4 significant digits Test current range: 10μA～ CVT self-excitation method low voltage output: output voltage 3～50V, output current 3～30A |
| Loop Resistance Tester | 2 units | YTC5501-100 | 1. Measurement range: 1～1999μΩ 2. Resolution: 1μΩ 3. Test current: DC 100A 4. Measurement accuracy: 0.5% 5. Display: current: three and a half digit LCD resistance: three and a half digit LCD 6. Working power supply: AC220V±10% 50Hz 7. Working environment: temperature -10℃～40℃ humidity: ≤80 %RH |
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| 5 | Transformer Volt-Ampere Characteristic Tester | 1 unit | YTC8750B | 1. Working power supply: 220Vac±10%/50Hz 2. Voltage output: 0～1000Vac (1 peak) 3. Ratio test current output: 0～600A 4. Volt-ampere test current output: 0～20A 5. Ratio detection: range 10000/1, accuracy ±0.5% 6. Working temperature: -10℃～40℃ 7. Ambient humidity: ≤90% 8. Altitude: ≤1000m 9. Dimensions: 400mm×300mm×260mm 10. Weight: ≤18kg |
| Ground Resistance Tester | 1 unit | YTC2571 | 1. Operating conditions Ambient temperature: 0℃～+45℃ Relative humidity: ≤85%RH 2. Measurement range and constant current value (effective value) Resistance: 0～2Ω(10mA), 2～20Ω(10mA), 20～200Ω(1mA) Voltage: AC 0～20V 3. Measurement accuracy and resolution Accuracy: 0～0.2Ω≤±3%±1d 0.2Ω～200Ω≤±1.5%±1d 1～20V≤±3%±1d Resolution: 0.001Ω, 0.01Ω, 0.1Ω, 0.01V 4. Measurement error caused by auxiliary ground resistance and ground voltage Allowable auxiliary ground resistance RC (between C1 and C2) <1.8KΩ; RP (between P1 and P2) <40KΩ error ≤±5% Allowable ground voltage ≤5V (power frequency effective value) error ≤±5% 5. Power supply and power consumption Maximum power loss ≤2W DC: 8×1.5V (AA, R6) battery AC: 220V/50Hz Dimensions: 220mm×200mm×105mm Weight: ≤1.4kg |
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| 6 | Capacitance and Inductance Tester | 1 unit | YTC720 | 1. Capacitance range: 0.2μF～2,000μF; Capacity range: 5～20,000 kvar; Measurement accuracy: 0.2μF～2μF ±1% reading ±0.02μF; 2μF～2,000μF ±1% reading ±2 digits; 2. Inductance range: 1mH～9.99H; measurement accuracy: ±1.5% reading ±2 digits 3. Output measurement voltage: AC 26V/500VA; 50Hz; 4. Display: large screen LCD full Chinese output, TPμp-40 panel thermal printer 5. Dimensions / weight: 370×370×220 mm / 16 kg 6. Working conditions a. Ambient temperature: 0℃ ～ +40℃, relative humidity: ≤90% b. Power supply: AC 220V±10%; 50Hz; |
| Ground Continuity Tester | 1 unit | YTC2885-10A | Measurement current: 10A, 1A Measurement range: 1A 10mΩ～20Ω 1μΩ～4Ω 10A 1μΩ～2Ω Accuracy: ±0.2% (full scale) ±2 digits |
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| 7 | Transformer DC Resistance Tester | 2 units | YTC316-10 | Measurement range: 0.01A: 1μΩ～2kΩ 1A: 1μΩ～20Ω : 1μΩ～4Ω 10A: 1μΩ～2Ω Measurement error: ±0.2% |
| Transformer Turns Ratio Tester | 1 unit | YTC3317 | 1. Turns ratio measurement range: 1—10000 2. Group: 1—12 points 3. Accuracy: 1-1000 0.2 class 1000-10000 0.5 class 4. Power supply: AC220V ±10%, 50HZ 5. Operating ambient temperature: -5℃ ─ 40℃ 6. Operating ambient humidity: ＜85% |
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| 8 | Transformer Winding Deformation Tester | 1 unit | YTC3223 | Through testing, faults such as winding distortion, bulging, displacement, tilting, inter-turn short circuit deformation and phase-to-phase contact short circuit can be accurately diagnosed The instrument has dual measurement systems: linear sweep measurement and segmented sweep measurement Amplitude measurement range: (-100dB)–(+20dB) Amplitude measurement accuracy: 0.1dB Sweep frequency accuracy: less than 0.01% Signal input impedance: 1MΩ Signal output impedance: 50Ω Same-phase test repeatability: 99.5% |
| On-load Tap Changer Tester | 1 unit | YTC3993 | Voltage output: >20V Working power supply: AC220V±10%, 50Hz Current output: ≥1A Power: 180W Resistance measurement range: 0.3~40Ω Resistance measurement accuracy: 0.1Ω~1Ω±0.1Ω, 1Ω~40Ω±5%±0.1Ω (excluding 1Ω) Time measurement range: 1ms~256ms Time measurement accuracy: 1ms~100ms±0.1ms
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