General Conditions:
- Altitude: ≤1000m
- Ambient Temperature: -10oC~45oC
- Relative Humidity: <90% RH (at 25 oC)
- Max. Daily Temp. Difference: 20 oC
- Atmospheric Pressure: 0.1MPa
- Atmospheric Humidity: 11g/m3
- Anti-earthquake Degree: ≤7 Class
-Operating Site: Indoor
Special Conditions
- Without electric dust at site
- Without firing & explosion danger at site
- Not existed for corrosive metals & insulated gas
- Waveform of power supply voltage is sine actually, and the waveform distortion rate is <3%
- Set a reliable earthing section, and its earthing resistance is <0.5 ohm
The site background of Partial Discharge should less than 3 PC.
2. followed Technical Standard:
GB/311.1-1997 ‘Insulation of HV Transmission & Distribution Equipment ’
GB/T16927.1-1997 ‘HV Testing Technique, Part I – General Testing Conditions’
GB/16927.2-1997 ‘HV Testing Technique, Part II– Measuring System’
JB/T9641-1999 ‘Testing Transformers’
GB/T7354-1987 ‘Measurement of Partial Discharge’
GB2536-1990 《Transformer Oil》
JB/T8169-1999 《Coupling Capacitor and Capacitive Divide》
3. Main Equipment of the System:
No. | Item | Qty (set) |
1 | Type YDTW-250kVA/250kV Power frequency no Partial Discharge testing transformer | 1 |
2 | Regulator, Type TYDZ-100/0.38/0~0.65 | 1 |
3 | Capacitance Divider (double as Coupling Capacitor), TRF250-0.0005 | 1 |
4 | Protection Resistance, Type GWR250-2.5-1 | 1 |
5 | Switch Cabinet, Type PGL-1 | 1 |
6 | Compensating reactor YDGK-3*75/0.6 | 1 |
7 | manual control console Type AC-2010 | 1 |
8 | Measurement and Control Cable, earthing bar as the spare parts will be supplied by seller. |
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