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  • S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer

  • S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer

  • S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer

S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer

The products implement the National Standard GB1094-2013 Power Transformer and GB / T6451-2015 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements, and are recommended as the major equipment products for the national urban and rural power grid construction and retrofit by the State Economic and Trade Commission.

Product Description

The products implement the National Standard GB1094-2013 Power Transformer and GB / T6451-2015 Three-phase Oil-immersed Power Transformer Technical Parameters and Requirements, and are recommended as the major equipment products for the national urban and rural power grid construction and retrofit by the State Economic and Trade Commission.

S11 series transformer adopts high quality material for copper winding, especially applying the new technology and new material for the coil insulation and active parts, thus the no-load and the load loss are obviously reduced, the performance and structure are more reliable and superior.


Product Features

Good Economic Performance

The no-load loss for S11 series products decreased 10.3% averagely, no-load current decreased 22.4% based on S9 series.

● Long Service Life

Transformer tank adopts hermetical structure, tank and tank cover can be connected by bolts or welded firmly, the transformer oil won’t contact with air, so that extend the service life effectively.

● High Operation Reliability

Improve the relevant sealing parts for the tank, increase the reliability and advance the technical level to ensure the reliability of the seal.

● Small Installation Area

S11-M series transformer tank uses the corrugated plate radiator. When the oil temperature changes, the corrugated plate will proceed thermal expansion, which can replace the role of the oil conservator. the corrugated plate tank has beautiful appearance, less occupied area.



Model and Meaning

S11 Series 6kV-35kV power Transformer With Off Circuit Tap Changer

Table 1: 6Kv, 10kV & 30kVA-2500kVA Power Transformer With Off Circuit Tap Changer

Rated Capacity (kVA)Voltage CombinationConnection Group SymbolNo-load Loss R(W)Load Loss R(W)75℃Impedance Voltage (%)No-load Current(%)Length L(mm)Width W (mm)Height H(mm)Gauge Horizontal*Vertical(mm)Active parts Weight(Kg)Oil Weight(Kg)Total Weight(Kg)
(KV) High VoltageTapping Range of High Voltage(KV)Low Voltage
3066.31010.5±5%±2×2.5%0.4Dyn11Yzn11Yyn0100630/6004.02.89807351145400*40017878355
50130910/8702.510177581205450*40024092415
631501090/10402.410357851285450*400285105505
801801310/12502.210658001290450*400330110540
1002001580/15002.110728201305450*400345116590
1252401890/18002.0115511051310450*550415135705
1602802310/22001.912358501535550*550485155835
2003402730/26001.812828601557550*550582168965
2504003200/30501.713109401605550*5506952101135
3154803830/36501.6146511201915660*6508552551520
4005704520/43001.5144011651725660*6609502951590
5006805410/51501.4151012501845660*65011503201905
63081062001.3165011401920660*65015004352015
80098075004.51.2212511752315820*82019107603510
10001150103001.1215013802570820*82021258803850
12501360120001.0235514852570820*82026059604610
16001640145000.9238517502630820*820312511505420
20001940183005.00.4194014001700820*82024207804200
25002290212000.4205014801800820*82025608804680

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

2. For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.


Technical Parameter for S11 Series 20kV Power Transformer With Off Circuit Tap Changer

Rated capacity(KVA)Voltage CombinationConnection Group SymbolNo-load Loss(W)Load Loss (W)75℃No-load Current (%)Short-circuit Impedance(%)
High Voltage (KV)Tapping ranges of High VoltageLow Voltage(KV)
3020±5% ±2×2.5%0.4Dyn11Yzn11Yyn0100690/6602.15.5
501301010/9602.0
631501200/11501.9
801801440/13701.8
1002001730/16501.6
1252402080/19801.5
1602902540/24201.4
2003403000/28601.3
2504003520/33501.2
3154804210/40101.1
4005704970/47301.0
5006805940/56601.0
63081068200.96.0
80098082500.8
10001150113300.7
12501380132000.7
16001660159500.6
20001950191400.6
25002340222200.5

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

2. For the transformer of rated capacity up to 500kVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11 or Yzn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.

3. The performance parameters in the table are also applicable for HV with dual voltage 20 (10)kV three-phase transformer.


Technical Parameter for S11 Series 35kV Power Transformer With Off Circuit Tap Changer

ModelVoltage CombinationConnection Group SymbolNo-load Loss (W)75℃Load Loss R(W)Impedance Voltage (%)No-load Current(%)Length L(mm)Width W(mm)Height H(mm)Gauge Horizontal*Vertical (mm)Active parts Weight(Kg)Oil Weight(Kg)Total Weight(Kg)
High Voltage (kV)Tapping Range of High Voltage %Low Voltage (kV)
503538.5±2×2.5%±5%0.4Dyn11/ Yyn01601200/11406.51.311959351825660*660300330860
1002302010/19101.112009951935660*6604703831130
1252702370/22601.112359401955660*6605504651335
1602802820/26801.012858951950660*6605804851475
2003403320/31601.0131011501985660*6606805951755
2504003950/37600.95145010902010660*6608606502000
3154804750/45300.95193010652320820*8209807652290
4005805740/54700.85185011652015820*82011708852725
5006806910/65800.85204512052415820*82013409603090
63083078600.65208512402515660*66015508953810
80098094000.65230516152685820*820199010304510
10001150115000.652545154025901070*1070241514755055
12501400139000.60249520102675820*820248014055290
16001690166000.60268021002770820*820260014905450
20001990197000.55279021802860820*820272015905600
25002360232000.552900229029801070*1070283017205760

Notes:

1. The Dimension and weight will be changed according to the requirements. These two data in the table will be subject to the factory documents.

2. For the transformer of rated capacity up to 500KVA, the value of load loss above the oblique line in the table is applicable to the connection group Dyn11. The value of load loss under the oblique line is applicable to the connection group Yyn0.


S11 Series 35kV 630kVA-31500kVA Three-phase Dual Winding Power Transformer With Off Circuit Tap Changer

ModelVoltage CombinationConnection Group SymbolNo-load Loss (W)Load Loss R(W)No-load Current(%)Short circuit impedance (%)Length L(mm)Width W(mm)Height H(mm)Gauge Horizontal*Vertical (mm)Active parts Weight(Kg)Oil Weight(Kg)Total Weight(Kg)
High Voltage (kV)Tapping Range of High Voltage %Low Voltage (kV)
63035±2×2.5%±5%3.156.310.5Yd1183078600.656.5240017002210820*82022109003250
80098094000.65250018502390820*820235010303500
1000115011500.65270019502510820*820249011803860
1250140013900.55290020502630820*820260013504350
1600169016600.45305021302750820*820281015804855
2000217018300.453105219528051070*1070280018005300
2500256019600.453150253529801070*1070352520607665
315035-38.5±2×2.5%±5%3.156.310.5304023000.457.03920272528401070*1070399522058565
4000361027300.453310291530701070*10704825256010115
5000432031300.453480302031451070*10705700263511305
6300524035000.458.03590290532101475*14757120324013510
800035-38.5±2×2.5%3.153.36.36.610.5YNd11720038400.354070305035951475*14758875384016690
10000870045300.354106279536552000*147510305360017690
12500100053800.304570301038401475*147512830431020990
16000121065800.305235329546152000*147516010665027660
20000144079500.305360341546602000*147518820760032170
25000170094000.2510.05830381048602000*147522360980042600
3150020201120000.256290429052602000*1475251101201049960

Note: 1.For the transformer of low voltage 10.5kV, the connection group symbol is applicable to Dyn11.

Note: 2.For the transformer of rated capacity 3150kVA or above, the -5% tapping position is for maximum current tap.

Note: 3.When the annual average load rate for the transformer is between 35% to 45%, the loss value in the table can obtain the highest operational efficiency.


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