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S11 Series Low loss energy-saving power transformer

S11 Series Low loss energy-saving power transformer

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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