HV AC Dielectric test transformer

General Conditions:

- Altitude: ≤1000m

- Ambient Temperature: -10^oC～45^oC

- 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

Product Description

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.