35 KV Oil-immersed Power Transformer Made in China - Suppliers and Manufacturers

Product Description

1.Product Introduction of 35 KV Oil-immersed Power Transformer

Type and Rating
Capacity range: 50-50000KVA.
Secondary voltage: 415V, 400V etc.
Frequency: 50Hz, 60Hz.
Type: Single phase ,three phase.
No-load tap changer and on-load tap changer.
ONAN and ONAF
Set-up and set-down type.

2. Product Parameter (Specification) of 35 KV Oil-immersed Power Transformer

S11 series 220kV Three-phase Two-winding Off-circuit Tap-changing Power Transformer

S9 series 35kV three phase Off-load tap changer power transformer

Capacity KVA	Voltage and tap range			Connection	No-load loss (kW)	Load loss (KW)	NO-load current (%)	Impedance (%)	Dimensions (mm) LxWxH
Capacity KVA	HV (kV)	MV (kV)	LV (kV)	Connection	No-load loss (kW)	Load loss (KW)	NO-load current (%)	Impedance (%)	Dimensions (mm) LxWxH
50	35	± 5	0.4	Dyn11 Yyn0	0.21	1.27/1.21	2.00	6.5	1100x845x1715
100					0.29	2.12/2.02	1.80		1190x915x1780
125					0.34	2.50/2.38	1.70		1220x1040x1780
160					0.36	2.97/2.83	1.60		1240x1070x1810
200					0.43	3.50/3.33	1.50		1380x780x1875
250					0.51	4.16/3.96	1.40		1540x880x1820
315					0.61	5.01/4.77	1.40		1440x800x1975
400					0.73	6.05/5.76	1.30		1660x825x1995
500					0.86	7.28/6.93	1.20		1710x865x2030
630					1.04	8.28	1.10		1630x1235x2070
800					1.23	9.90	1.00		1655x1415x2120
1000					1.44	12.15	1.00		1860x1435x2220
1250					1.76	14.67	0.90		1890x1640x2260
1600					2.12	17.55	0.80		2050x1720x2390
630			3.15 6.3 10.5	Yd11	1.04	8.28	1.10		1630x1235x2070
800					1.23	9.90	1.00		1655x1415x2120
1000					1.44	12.15	1.00		1860x1435x2220
1250					1.76	14.67	0.90		1890x1640x2260
1600					2.12	17.55	0.80		2050x1720x2390
2000					2.72	19.35	0.70		2400x1900x2410
2500					3.20	20.70	0.60		2500x1930x2700
3150	35~ 38.5	± 5	3.15 6.3 10.5		3.80	24.30	0.56	7.0	2600x2100x2800
4000					4.52	28.80	0.56		2830 x2350x2855
5000					5.40	33.03	0.48		2930x2480x2930
6300					6.56	36.90	0.48	7.5	3150x2330x3220
8000		± 2 x 2.5	3.15 3.3 6.3 6.6 10.5 11	YNd11	9.00	40.50	0.42		3295x3110x3345
10000					10.88	47.70	0.42		3450x3210x3440
12500					12.60	56.70	0.40	8.0	3620x3255x3500
16000					15.20	69.30	0.40		3980x3420x3650
20000					18.00	83.70	0.40		4030x3470x3690
25000					21.28	99.00	0.32		5050x4640x3930
31500					25.28	118.8	0.32		5120x4800x4030

S9 series 35kV three phase on-load tap changer power transformer

Type	Voltage compose and Tapping range (kV)		Connection	No-load Loss (kW)	Load loss (kW)	No- load current (I%)	Impedance voltage (%)	Transport weight (t)	Gross weight (t)	Dimensions L×W×H (mm)
Type	HV	LV	Connection	No-load Loss (kW)	Load loss (kW)	No- load current (I%)	Impedance voltage (%)	Transport weight (t)	Gross weight (t)	Dimensions L×W×H (mm)
SZ9-2000/35	35 ±3×2.5%	6.3 10.5	Yd11	2.88	18.7	1.00	6.5	4.93	5.97	3010×2070×2540
SZ9-2500/35				3.40	21.7	1.00	6.5	5.68	6.95	3040×2270×2610
SZ9-3150/35				4.04	26.0	0.90	7.0	6.08	7.90	3160×2300×2640
SZ9-4000/35	35 38.5 ±3×2.5%	6.3 10.5		4.84	30.7	0.90	7.0	7.10	9.11	3300×2330×2890
SZ9-5000/35				5.80	36.0	0.85	7.0	8.47	10.86	3350×2520×3000
SZ9-6300/35				7.04	38.7	0.85	7.5	9.87	12.30	3680×2650×3050
SZ9-8000/35				9.84	42.8	0.75	7.5	12.55	15.30	4190×2930×3280
SZ9-10000/35	35 38.5 ±3×2.5%	6.3 6.6 10.5 11	Ynd11	11.6	50.6	0.75	7.5	14.70	17.86	4620×3160×3400
SZ9-12500/35				13.7	60.0	0.70	8.0	17.35	20.05	4740×3200×3540
SZ9-16000/35				16.0	73.0	0.70	8.0	19.45	23.74	4810×3360×3790
SZ9-20000/35				18.9	88.3	0.70	8.0	27.50	34.95	4880×3540×4150
SZ9-25000/35				22.4	104.4	0.65	8.0	32.51	40.22	4920×3920×4200
SZ9-31500/35				26.6	125.3	0.65	8.0	37.73	45.53	5010×4270×4460

3. Conditions of service for 35 KV Oil-immersed Power Transformer

(1) Altitude: Up to 1,000m above sea level.
(2) Ambient temperature:
Max: +40ºC.
Average (daily, Max.): +30ºC.
Average (yearly, Max.): +20ºC.
Min: -45ºC.
(3) Environment: Outdoor.
(4) Special conditions:
It may be consulted between manufacturer and customer.

4. Structural Features of 35 KV Oil-immersed Power Transformer

(1) Iron core
The iron core is made of cold rolled grain oriented silicon steel sheet. Laminations are cut to length on GEORG cut to- length line with step lap cut and automatic stacking functions.
The multistep lamination structure can reduce the loss and noise .
The steel sheet in the core limbs and yokes are clamped together by glass-epoxy bonds.
(2) Winding
High quality enameled or paper covered copper is used as conductor, the winding was made as drum type, spiral type, improved spiral type, continuous type and interleaved type to ensure the insulation strength. Standard tapings are ±2*2.5%of the HV winding.
(3) Tank
The tank, cover and the conservator are made by corrugated steel plate .For the small transformers, we use a deep tank and a cover, but for larger transformers, we manufacture bell type .The corrugated construction are a effective way for oil cooling.
(4) Insulation oil
The tanks are filled with high quality grade mineral oil as per IEC296 and it is PCB and PCT free.
The oil is used to help cooling the transformer. It is also used provide part of the electrical insulation between internal live parts.
(5) Tap changer
Tap changers are used to regulate the output voltage of the transformers to required levels .
We achieve this by changing the ratios of the transformer on the system by altering the number of turns in the HV winding .Tap changers can be on load (OLTC) or off load(OCTC).
(6) Assembly
The core and the windings assembled together from the active part of the transformer.
The active body assembled with multi-windings and identical pressure dry method adopted, effectively improved the electrical strength and the ability to short circuit withstanding.