Oil-immersed/dry-type power transformers (oil-loaded/non-excitation tap-change)

S9 type double-winding non-excitation tap-changing oil immersed power transformer of 35KV(kVA) rated capacity800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500, 16000, 20000, 2500, 31500General InstructionThis kind of product is applied to power system of three-phase. 50Hz as well as 35KV and bellows.

Featured Products

S9 type double-winding non-excitation tap-changing oil immersed power transformer of 35KV

(kVA) rated capacity
800, 1000, 1250, 1600, 2000, 2500, 3150, 4000, 5000, 6300, 8000, 10000, 12500, 16000, 20000, 2500, 31500

General Instruction
This kind of product is applied to power system of three-phase. 50Hz as well as 35KV and bellows. It is the main transformer equipment of medium and small-sized transformer substation, supplies power distribution, power and illumination for the industry and agriculture.
The company introduces in domestic and overseas advanced technique, adopts the latest material and optimizes design, which enables the product structure more reasonable., and greatly improves the product has passed the short-circuit test prepared by Wuhan High Voltage Research institute and also the test prepared by National Center for Quality Supervision&Test of Transformer...

Structure Features
Iron core
The iron core is made of high quality cold rolled silicon steel sheet, adopts the kinds of types like full-bias multi-step seam, no punched hole, winding iron core, etc., besides, both stainless steel stay plate and epoxy glass belt are for clamping it.
Coil
High quality enameled wire that is made of oxygen free copper or paper wrapped flat copper wire is used as conductor, the coils is provided kinds of types such as drum type, spiral type, improved spiral type, continuous type and interleaved type.
Oil tank
The oil tank is of barrel type or shield type, the heat-sinking element is provide with corrugated plated radiator.
The transformer has not been equipped with trolley, but there is a base that accords with national standard rail gauge welded at the bottom of box for your convenience.
Safety protection device
According to national standard and users' requirements, the transformer may be equipped with following safety protection devices: Pressure relief valve, gas relay, signal thermometer, oil purifier, oil conservator, oil sampling valve, etc.

We can supply you all kinds of power transformers. Inculding oil immersed(No-excitation Tap-changing, On-load Tap-changing), dry type power transformer(SC(B)/SG(B))

Pls feel free to contact us for more details.
S9 type double-winding non-excitation tap-changing oil immersed power transformer of 35kv
Rated power kva Voltage Connection symbol Loss (kw) No-load current(%) Impedence voltage(%) Weight (kg)  
H. V    kv High voltagr tapping range L. V      kv No-load Load Oil weight overall weight
800 38.5    35 ± 5%                ± 2*2.5%  3.15  6.3            10.5        Yd11 1.25 9.9 1.05 6.5 790 3040
1000 1.48 12.2 1 850 3410
1250 1.76 14.7 0.9 950 3890
1600 2.13 17.6 0.85 1060 4620
2000 2.6 19.4 0.75 1195 5345
2500 3.15 20.7 0.75 1285 5960
3150 3.87 24.3 0.7 7 1470 6695
4000 4.64 28.8 0.7 1760 8350
5000 5.49 33 0.6 1850 9400
6300 6.57 36.9 0.6 7.5 2200 11300
8000 YNd11 9 40.5 0.55 2450 13240
10000 10.6 47.7 0.55 3230 16600
12500 12.6 56.7 0.5 8 3585 19400
16000 15.3 69.3 0.5 4420 23100
20000 18.09 84 0.5 6060 19700
25000 21.51 99 0.4 6490 38200
31500 25.65 119 0.4 6890 40300
 



























S9 type double-winding non-excitation tap-changing oil immersed distribution transformer of 35kv
Rated power kva Voltage Connection symbol Loss (kw) No-load current(%) Impedence voltage(%) Weight (kg)  
H. V    kv High voltagr tapping range L. V      kv No-load Load Oil weight overall weight
50 38.5    35 ± 5%                ± 2*2.5%  10.5 3.15  6.3            0.4        Dyn11 Yyn0  Yd11 0.22 1.22 2 6.5 265 3040
100 0.31 2.03 1.8 310 1150
125 0.34 2.39 1.75 320 1190
160 0.37 2.84 1.65 360 1230
200 0.43 3.33 1.65 390 1300
250 0.51 3.96 1.4 425 1480
315 0.61 4.77 1.4 460 1590
400 0.74 5.76 1.3 490 1760
500 0.87 6.93 1.3 540 2150
630 1.04 8.28 1.25 620 2380
800 1.25 9.9 1.05 780 1800
1000 1.49 12.2 1 910 3850
1250 1.76 14.7 0.85 1060 4600
1600 2.13 17.6 0.75 1210 5200

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours