Channel International Ltd.
sales@ehearttransformer.com
Products
Power Transformer (35kV)
Power Transformer (35kV) Power Transformer (35kV) Power Transformer (35kV) Power Transformer (35kV)
Power Transformer (35kV) Power Transformer (35kV) Power Transformer (35kV) Power Transformer (35kV)

Power Transformer (35kV)

Product Introduction

Products structure and technical features


The oil-immersed transformer produced by our factory have these advantages: low loss, low noise, high short circuit strength and good appearance. We company create these prefect products of that each parameter has reached to advanced level among domestic similar products by combining advanced manufacture equipments and technology.


Structure features:

Core and main body: it is used iron core cutting line ,all inclined ladder joints and improving flux trend to eliminate flux saturation phenomenon of iron core in joints . By doing these, it reduces the no-load loss, no-load current and noise of transformers. Adopting pulling-plank structure, in order to strengthen the ability of withstanding short-circuit, we put many nails around pressing planks and bracing plates are used as support between H.V and L.V yoke, make the iron core be a whole. The iron core sheet are coated by glue which are specialized for silicon steel , so that all silicon steels can be bonded together to make the iron core be  integral one, this effectively enhances mechanical strength and plays a positive role in the core anti-rust. The low part of the body and the oil tank are supported through bracing plates adopt" high intensity electric laminated" technology, to guarantee the low part of oil-immersed transformer's body safe and reliable.


Coil: The high-voltage(HV) coil adopts an interleaved-continuous structure, The low-voltage(LV) coil adopts an interleaved-continuous or spiral structure, are independently provided with voltage-regulating winding to balance the ampere turn of each winding-up, effectively lower the mechanical force to minimal level. In the transformer winding, there is a zigzag oil guide structure so as to fully cool all areas inside the winding, lower the temperature rise of the winding and the hot points of the winding and prolong the service life of insulation.


Oil tank: the tank's structure of oil-immersed transformer is bell jar type or suspended type, have a good looking and high mechanical strength. It adopts" flanged joint" technology in every key point (such as annular tubes, pressure valves, switches,etc.), which effectively avoid leaking oil.


Technical Parameter and features

Technical specification

1,voltage:35kV

2,voltage regulation: on load tap regulation ,off circuit tap regulation

3,capacity range:<31500kVA

4,frequency: 50Hz

5,phase: 3-phase

6,vectorgroup:Yd11,YNd11,Dy11,Dyn11,YNyn1

7,short circuit impedance: according to customer requirements or national standard

8,operation environment: according to customer requirements or national standard

9,cooling method: ONAN/ONAF

10,Insulation level: power frequency withstand AC-85kV, impulse withstand voltage LI-200kV


Buyer reading

When you make order, pls provide below:

1, model  2, rated capacity  3,voltage combination  4,voltage regulation range

5,frequency  6,vector group  7,short circuit impedance 8,others: special requirements need be remarked


Introduction of products model

Power Transformer.jpg


Technical Parameter


Sheet 1, Basic performance parameter of S11 type 35kV double winding without excitation voltage regulating distribution transformer

Rated
capacity(kVA)
Rated voltage(kV)Vector
group
No-load
current(%)
Loss(W)Short
circuit
impedance
Outline dimensions(mm)Weight(kg)Gage
horizontal*
vertical
H.V.tapping
range
L.V.No loadNo loadWith loadLWHbody weightoil weighttotal
5035±5%
or
±2*2.5%
0.4Yyn0
Dyn11
1.617011506.511958951825300330860660
1001.42301920120093519354703851130660
1251.42702260123594019555504651335660
1601.32902690128599519605804851475660
2001.234031601310109019856805951755660
2501.140037601450115020108606502000820
3151.148045301930115520209807652290820
4001.0580547018501065211511708852725820
5001.0680658020401205241513409603090820
6300.9830787021401240251515508952815820
8000.89809400230515402685199010304510820
10000.8115011540254515902590228013054920820
12500.8140013940249516152675241514755055820
16000.7169016670268020102970260014905450820
63035
or
38.5
±5%
or
±2*2.5%
3.15

3.3

6

6.3
10
10.5
11
Yd110.683078706.521401050222015809253275820
8000.99809400227513302400187011154085820
10000.811501154024501670247018059703705820
12500.8141013940256517702615202010104030820
16000.7170016670268017802685236510904545820
20000.62180183802800189027552745120052151070
25000.62560196702830198028203320133060801070
31500.53040230907.02850216529603850152070501070
40000.453620273602855225031004600175084901070
50000.454320313803000236531555525195089751070
63000.45250350607.53075253032506770232011490
8000YNd110.472003848031302645371080932500141201475
100000.3587004532035652750383069832850164801475
125000.3510080538608.0415027853950109323250183451475
160000.31216065830448028604720133303750223071475
200000.31440079510456032254865170354365299751475
250000.31702094050461034904910213105280353701475
315000.2520220112860476037505100253106650298001475



Sheet 2, Basic performance parameter of SZ11 type 35kV three-phase voltage regulation transformer

Rated
capacity(kVA)
Rated voltage(kV)Vector
group
No-load
current(%)
Loss(W)Short
circuit
impedance
Outline
dimensions(mm)
Weight(kg)Gage
horizontal*
vertical
H.V.tapping
range
L.V.No loadNo loadWith loadLWHbody weightoil weighttotal
200035±3*2.5%
or
±4*2.5%
6.3
10
10.5
Yd110.652300192406.53110220028102775156059651070*1070
25000.652720206403110254029853300175069501070*1070
31500.63230247107.03225273028453770197079001070*1070
40000.63870291603315292030754520226091101070*1070
50000.5546403420034853025315054802475108551070*1070
630038.50.555630367707.535952910321568102620123001475*1475
8000YNd110.578704061040753055360080663330153001475*1475
100000.592804805041102800366097053750178581475*1475
125000.4510940568608.0457530153845109634215200421475*1475
160000.41317070320524033004620131404900237401475*1475
200000.41557082780536534204665156535700281861475*1475



The transformer with load voltage regulating tap switches called on load regulating transformer. Under the condition of not cutting load current, though tap switch, numbers of sub-joints will be led out from the transformer winding to change the sub-joint position and change its effective turn. That is, gain the purpose of no change of output voltage through changing voltage ratio of the transformer. In the process of changing and sub-jointing, cycling current is absorbed and limited by transitional resistance.


Above data and outline dimensions are just for reference, final data based on real products.



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