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Current position: PRODUCTS / TRANSFORMERS / Oil Immersion Transformers /

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S11 Series Low loss energy-saving power transformer

Product Description Interior of the transformer is isolated from air, so the transformer oil can not absorb outer moisture and oxygen since change of transformer's volume could be fixed with flexibility of corrugated tank structure. Then aging s

Published in2018-08-04

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Detailed description

Product Description

Interior of the transformer is isolated from air, so the transformer oil can not absorb outer moisture and oxygen since change of transformer's volume could be fixed with flexibility of corrugated tank structure. Then aging speed of insulated material will be decreased. Before being put into operation, suspension of core is not necessary to be checked. Clients could also be free from later maintenance and reparation. Reliability is visibly upgraded. the transformer is designed with PC CAD, Its characters are conformed to IEC 60076 and GB 1094, and qualification of ISO 9001.

General

Rated capacity: 10-4000kVA
High voltage: 11kv, 10.5kv, 10kv,6.3kv, 6kv
Low voltage: 0.4kV
Low loss and noisy
Compared with normal oil immersed power transformer has no oil storage box and adopts the corrugations on the oil tank as its heat-radiation parts
Oil tank is made by fine cold-rolled steel on an exclusive production-line
Corrugations can expand or contract according to the change of oil volume
Thus the inner space of transformer can be isolated from the air
which can reduce the aging speed of oil and prevent the insulation materials from damping
Oil-immersed transformer possesses a reliable operation and is free from maintenance

S11-M series hermetically sealed oil-immersed power transformer of class 20-10KV with dual-winding off-circuit-tap-changing

Model meaning

Overview & features

S11 Series of three-phase oil-immersed distribution transformer adopts new type insulation structure in its whole body, quitely improving its short-circuit resistant capacity; its core is made of high quality cold-rolled steel sheet; all HV. windings are made of oxygen-free copper, and constructed in multi-layer barrel type structure; all fasteners have treated with special tightening treatment.
Having many good features such as high efficiency, low loss, the transformer can save much electric energy and running cost, having had significant social benefits, It is a real high-new-tech product which has been popularized by many nations.

Reliable structure

Depending on mature technologies, we made a lot of improvements on the basis of traditional structure:
>>Spiral winding with longitudinal oil duct that enjoys good inner heat dissipation;
>>Effective support at winding end surface that further improve the short-circuit resistant capacity of winding;
>>Adoption of new hoisting structure and body positioning structure that guarantee safety in long-distance transport and in service;
>>More unique and reliable structures for your option;
>>Adoption of transformers with more excellent performances to improve the technical content.

Excellent materials

>>Because we use oxygen-free copper wires of lower resistivity, which will become smoother and burr-free after a series of surface treatment, so the load loss of our transformer is lower and the electric performance is better.
>>We use high-quality silicon-steel sheets which are of lower specific loss, so the no-load loss of the transformers is lower.
>>We use high quality wooden laminating insulation pieces, which won't split or move even under the influence of short circuit current.
>>We use thoroughly filtrated transformer oil containing less water, gas or impurities, which makes our transformers work better.
>>We use high quality rubber sealing material, which can prevent the transformers from aging or leakage effectively.
>>All raw materials have passed the quality testing, and all the raw material factories have passed the national standard IS09000 inspection.

Good technology and economic performance

Improved from S9 series product, S11 series product reduces the no-load loss by 31%; no-load current by 75-90%; average temperature-rise by 10k; noise level by 3-5 db; and double the products' service life. Even under 20% overloads, it can also work for a long period of time.

Hermetically sealed

The "M" in S11 (M) stands for omniseal structure that the oil tank employed. Compared with common oil-immersed transformer, omniseal oil-immersed transformer discards the oil conservator but adopts wing-like corrugation for replacing oil tube as component of heat dispersion. The corrugated oil tank which is made of high-quality cold-rolled sheets is produced on the special production lines. The wing-like corrugation will expand and compress as that the volume of transformer dose, so that the transformer is separated from the atmosphere and can prevent or slower deterioration of oil and breathing of insulation. All these ensure the reliability of operation and without maintenance.

After the treatment of deoiling, derusting and parkerizing, the surface of corrugated oil tank is coated with paint which provides three-proofing function. It is suitable for the use in the environment such as metallurgy, petrochemical industry and mining, etc.

Service conditions

>>Installation height: altitude shall not exceed 1000m
>>Ambient temperature: -40oC~40oC

Dimension & SchematicTechnical parameters

Rated capacity	Installation dimension
(KVA)	L	W	H	C1	C2
30	980	870	1230	550	550
50	1010	900	1280	550	550
63	1030	920	1310	550	550
80	1050	930	1370	550	550
100	1070	970	1420	550	550
125	1090	990	1430	550	550
160	1130	990	1470	660	660
200	1150	1010	1520	660	660
250	1200	1080	1570	660	660
315	1210	1100	1620	660	660
400	1420	900	1730	660	660
500	1450	920	1790	820	820
630	1550	1000	1950	820	820
800	1700	1040	1990	820	820
1000	1780	1130	2050	820	820
1250	1880	1230	2100	820	820
1600	2040	1380	2260	820	820
2000	2350	1180	2600	1070	1070
2500	2450	1220	2720	1070	1070

Rated capacity	Voltage combination			Connection group	Loss (KW)		No-load current	Short-circuit impedance	Weight (kg)
kVA	HV kV	High-voltage tapping range	LV kV	symbol	No-load	On-load	%	%	Oil weight	Gross weight
30	20/10	±5×2.5% ±2×2.5%	0.4	Dyn11	0.09	0.66	2.1	5.5	260	640
50					0.13	0.96	2.0		280	720
63					0.15	1.145	1.9		290	760
80					0.18	1.37	1.8		310	830
100					0.2	1.65	1.6		330	920
125					0.24	1.98	1.5		340	990
160					0.29	2.42	1.4		360	1090
200					0.33	2.86	1.3		390	1230
250					0.4	3.35	1.2		430	1380
315					0.48	4.01	1.1		470	1610
400					0.57	4.73	1.0		500	1740
500					0.68	5.66	1.0		540	1960
630					0.81	6.82	0.9	6.0	660	2500
800					0.98	8.25	0.8		740	2900
1000					1.15	11.33	0.7		820	3310
1250					1.35	13.2	0.7		890	3780
1600					1.63	15.95	0.6		1000	4500
2000					1.95	19.14	0.6		1060	5180
2500					2.34	22.22	0.5		1130	5850

Note:

1. High-voltage tapping range of ±5×2.5% or ±2×2.5% is available on request.

2. Performance parameters of other capacity specifications can be determined by both users and manufacturer through negotiation.

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