35KV Oil Immersed Transformer

General introduction of 35KV Oil Immersed Transformer

Item:35KV Oil Immersed Transformer
①Vacuum filter filling of transformer oil
②Stable electrical performance
③High dynamic stability
④Good thermal stability
⑤High overload capacity
⑥Long service life

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Products

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- 35KV Oil Immersed Transformer
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- 315 KVA 3.3KV To 400V VPI Open Winding Dry Type Transformer
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Transformer Substation
- YB-12/0.4 Outdoor Box-type Substation
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High and Low Voltage Switchgears
- XL21 power distribution cabinet
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Liquid-cooled Energy Storage Cabinet
- Cabinet energy storage
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Introduction
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35KV oil immersed transformer has strong short-circuit resistance, beautiful appearance, reliable operation, low loss and low noise, reaching the advanced level of similar foreign products. The SZ11- -8000 / 35 transformer prototype produced by our company has passed the sudden short-circuit test conducted by the National Transformer Heat Testing Center at one time. Longitudinal oil passages for the high and low voltage coils are conducive to heat dissipation, which can greatly reduce the temperature difference between copper oil and the internal coil. Hottest spot temperature rise.

Oil Immersed Transformer

Model Description

35KV oil immersed transformer

S:Three phase

▢:"F" means air-cooled self-cooling without code

▢:"Z" means on-load voltage regulation without action,with magnetic load regulation and voltage regulation without code

▢:Performance level code

▢:Rated Capacity(kVA)

▢:Voltage class(kV)

Working Environment：

● Installation altitude: no more than 1000m above sea level

● Ambient temperature: -40℃~+40℃

Main Technical Parameters

■ 800KVA-31500KVA Three-phase double-winding non-excitation voltage regulating power transformer:
Model	Rated capacity (KVA)	Link group label	Voltage combination (KV)	No-load loss (W)	Load loss (W)	No-load current(%)	Short circuit impedance (%)	Tap range	Low pressure
Model	Rated capacity (KVA)	Link group label	high pressure	No-load loss (W)	Load loss (W)	No-load current(%)	Short circuit impedance (%)	Tap range	Low pressure
S11-630	630	Yd11	35	±5%	3.15 6.3 10.5	830	7870	1.10	6.5
S11-800	800					980	9410	1.00
S11-1000	1000					1150	11540	1.00
S11-1250	1250					1410	13940	0.90
S11-1600	1600					1700	16670	0.80
S11-2000	2000					2180	18380	0.70
S11-2500	2500					2560	19670	0.60
S11-3150	3150		35 ~ 38.5	±5%	3.15 6.3 10.5	3040	23090	0.56	7.0
S11-4000	4000					3620	27360	0.56
S11-5000	5000					4320	31380	0.48
S11-6300	6300					5250	35060	0.48	7.5
S11-8000	8000	YNd11	35 ~ 38.5	± 5%	3.15 3.3 6.3 6.6 10.5 11	7200	38500	0.42
S11-10000	10000					8700	45300	0.42
S11-12500	12500					10080	53900	0.40	8.0
S11-16000	16000					12160	65800	0.40
S11-20000	20000					14400	79500	0.40
S11-25000	25000					17020	94100	0.32
S11-31500	31500					20220	112900	0.32
Note 1: Transformers with a rated capacity of 6300KVA and below can provide products with a high-voltage tap range of +2x2.5%.
Note 2: For transformers with lower voltages of 10.5KV and 11KV, products with connection group designation Dyn11 can be provided.
Note 3: For transformers with rated capacity of 3150KVA and above, the -5% tap position is the maximum current tap.

■ 2000KVA-20000KVA Three-phase double-winding on-load voltage regulating power transformer:
Model	Rated capacity (KVA)	Link group label	Voltage combination (KV)			No-load loss (W)	Load loss (W)	No-load current(%)	Short circuit impedance (%)
Model	Rated capacity (KVA)	Link group label	high pressure	Tap range	Low pressure	No-load loss (W)	Load loss (W)	No-load current(%)	Short circuit impedance (%)
SZ11-2000	2000	Yd11	35	±3x2 5%	6.3	2300	19240	0.80	7
SZ11-2500	2500		35	±3x2 5%	10.5	2720	20640	0.80
SZ11-3150	3150			±3x2 5%		3230	24710	0.72
SZ11-4000	4000		35 ~ 38.5		6.3	3870	29160	0.72	7.0
SZ11-5000	5000		35 ~ 38.5		10.5	4640	34200	0.68
SZ11-6300	6300					5630	36800	0.68
SZ11-8000	8000	YNd11		±3x2.5%	6.3	7870	40600	0.60	7.5
SZ11-10000	10000				6.6	9280	48100	0.60
SZ11-12500	12500		35 ~ 38.5		10.5	10940	56900	0.56
SZ11-16000	16000				11	13170	70300	0.54	8.0
SZ11-20000	20000					15570	82800	0.54
Note 1: For transformers with low voltage voltages of 10.5KV and 11KV, products with connection group designation Dyn11 can be provided.
Note 2: Maximum current tap is -7.5% tap position.