JDQXF-35/66/110/220
Adopting mature cascade insulation structure and high-purity insulating oil, the JDQXF series transformer delivers reliable multi-level high-voltage insulation and stable heat dissipation performance. Equipped with low-loss silicon steel core, it maintains accurate transformation ratio and high measuring precision, effectively resisting electromagnetic interference and voltage fluctuation in complex power grid environments.
Featured with fully sealed integrated structure and top metal expander, the JDQXF series effectively prevents oil leakage, moisture and dust intrusion. The high-strength anti-fouling porcelain sleeve with multi-layer anti-corrosion treatment enables stable all-weather operation in harsh environments, including high altitude, low temperature and coastal salt fog areas.
Optimized with balanced insulation and standardized winding layout, these 35kV-220kV voltage transformers have strong overload capacity and low operating noise. Featuring long service life and maintenance-free operation, they significantly reduce daily operation and maintenance costs for various power grid construction and upgrading projects.
Covering full medium and high voltage specifications, JDQXF series voltage transformers are versatile core equipment for power engineering. We provide factory direct supply, customized specifications, complete certification documents and professional after-sales service for global power projects.
Product Details
JDQXF-35/66/110/220
SF 6 gas insulated voltage transformer
□Introduction
□This series of product is of single phase and outdoortype,is applicable to AC power systems of rated voltage of 35,66,110 and 220kV and rated frequency is 50Hz,used for voltage measuring,relaying protection and automatic monitoring.Earthing mode of running system of transformers of 35 and 66KVis neutral point ineffective earthing system;earthing mode of running systemof transformers of 110 and 220kV i neutralpont effective earthing system.
□Characteristic of structure
□The product has advantages of reasonable design and explosion-proof functon.
□ Good sealing performance.
□Low partial discharge level.
□The product shows capacitance,low magnetic flux density and antiresonance.
□ Low dielectric dissipation factor,strong weatherproof capability.
□ Strong seismic intensity.
□Characteristic
□The product adopts box type structure,is composed of primary terminal board,wire leading pipe,high-voltage insulated bushing,shell,machine body, junction box and density relay and so on(see table 2 for outline installation dimension).
□Transformer winding adopts single-stage structure,the composite insulation layer combined with SF6 gas and diamond dotted glue polyester film enables the product to withstand high voltage.Machine body isfixed in the shall,lead-out wire of secondary winding is led in the junction box through secondary terminal board,there are terminals in the junction box fr user connection.The shell not only can be usedfor placing machine body,has functions of installation and fixing,but also can be used forsttingthe SF6 density relay and SF6gas charge valve.The high-voltage insulated bushing adopts high-strength porcelain bushing or silicon rubber composite bushing,it is able to withstand large pressure without be damaged,it onnects the shell with primary terminal board firmly through the upper and lower flanges of bushing.The shell also is equipped with earth plate.
□Technical data
|
Type |
JDQX-35W2 |
JDQXF-66W2 |
JDQXF-110W2 |
JDQXF-220W2 |
|
Rated primary voltage |
35/3 |
66/3 |
110/ √3 |
220/3 |
|
Rated frequency |
50 |
50 |
50 |
50 |
|
Max working voltage |
40.5 |
72.5 |
126 |
252 |
|
Rated secondary voltage |
100/3 |
100K3 |
100/ √3 |
100/V3 |
|
Rated voltageof residual votage winding |
100/3 |
100/3 |
100 |
100 |
|
Accuracy class(combination) |
0.2/3P |
0.2/0.5/3P |
0.2/0.5/3P |
0.2/0.5/3P |
|
Rated output(corresponding to) |
50/100 |
100/100/100 |
150/150/300 |
100/150/300 |
|
Rated voltage factor/time |
1.9/8h |
1.9/8h |
1.5/30s |
1.5/30s |
|
Eathtermina witstn votag ofprinaywinding |
5 |
5 |
5 |
5 |
|
Inductive withstand voltage of primary winding |
95 |
160 |
230 |
460 |
|
Lightning full-wave impulse withstand voltage(peak) |
200 |
350 |
480 |
950 |
|
Lighitning chopped wave impulse withstand voltage(peak) |
220 |
360 |
530 |
1050 |
|
Null meter withstand voltage |
30.4 |
55 |
95 |
190 |
|
Woring gspresuresplementay gaspresure |
0.4/0.35 |
0.4/0.35 |
0.4/0.35 |
0.4/0.35 |
|
Partial discharge level |
≤5 |
≤5 |
≤5 |
≤5 |
|
Rated thermal imit output |
500 |
1000 |
2000 |
1500 |
|
Annual gas leakage rate |
≤0.5% |
≤0.5% |
≤0.5% |
≤0.5% |
□Working environment
□Ambient temperature:-25℃~+40℃;daily mean temperature not exceeds+30℃ .
□Altitude:not exceed 1000m.The ones exceed 1000m shall be designed separately
□Relative humidity of air:less than 95%(at20℃).
□Capability of withstanding seismic intensity:Ms8.
□Wind velocity:notexceed 35m/s.
□Atmospheric condition:no serous pollution,class of pollution:ⅢI.
□Outline dimension
|
1 |
Type |
JDQX-35W2 |
JDQXF-66W2 |
JDQXF-110W2 |
JDQXF-220W2 |
|
2 |
Product dimensions
|
A×B×H |
A×B×H |
A×B×H |
A×B×H |
|
|
Length * Width * Height |
590×517×1081 |
670×655×1930 |
698×710×1920 |
840×830×3392 |
|
3 |
Installation dimensions |
315×315 |
300×320 |
450×450 |
340×320 |
|
4 |
Installation hole diameter |
4-φ22 |
4-φ18 |
4-φ20 |
4-φ18 |
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