Packaging & Delivery

Package Size 150.00cm * 150.00cm * 200.00cm Package Gross Weight 2000.000kg

Product Description

ntent="" style="background-color:#f2f2f2;border-radius:3px;padding:0 10px;display:inline-block;line-height:36px;">Product Description

On load tap changer transformer plays an important role in power system.It can not only stabilize the load center voltage, but also connect the power grid, adjust load current, improve reactive power distribution etc.Its basic principle is to lead out several taps from the coil on one side of the transformer, and switch from one tap to another through OLTC, without cutting off the load current.So as to change the effective number of turns and achieve the purpose of voltage regulation.

On load voltage regulation technology of transformer is widely used in distribution system, and also in step-up transformer of power plant. At present, almost all the large capacity transformers in the power system adopt on load voltage regulators,It is also equipped with a perfect low-voltage distribution network structure and sufficient reactive power compensation capacity to ensure  the safe operation of the power grid and meet the requirements of customers for power quality.

Product features
1.No load voltage regulating transformer need to adjust the tap of high-voltage side only when the power is cut off, 
so as to change the ratio of the transformer to regulate the voltage at the low-voltage side.Its regulation range is small, generally within ± 5%, It can only be adjusted once or twice a year.Most transformers in power system are no-load tap transformers. 2.The on load tap changing transformer has a special switch, which can change the tap position without power off (with load).Its voltage regulation range is large, generally more than 15% or even up to 30%, and it can be adjusted  automatically for several times a day.
3.No excitation voltage regulation refers to no-load voltage regulation,which can be adjusted only when the transformer is off.On load tap chaning transformer can change the voltage by changing the tap position when it is on running.

4.OLTC switch has the advantages of frequent on-off, no spark and long service life.The traditional trigger circuit of power electronic switch has the 
problem of electrical isolation.The application of optical fiber communication technology to the medium and high voltage trigger control system
 can effectively solve the problem of high and low voltage electrical isolation.
 

1. Low noise: compact design structure, application of new materials and new technology, reduce noise, no oil storage tank, lower height than similar products.
2. Reliable long-term service life: The fully sealed power transformer case cover and the tank rim are bolted welded to isolate the contact between oil and air.
3. Small size and beautiful appearance: oil transformer series of transformer oil tanks use corrugated plate fins. When the oil temperature changes, the change in oil volume is adjusted and compensated by the elastic expansion and contraction of the corrugated sheets. The corrugated fuel tank is beautiful in appearance and small in size, with a small footprint.
4. Maintenance-free: Oil immersed Outdoor Distribution Transformer,the fully sealed transformer does not require maintenance.

sz11 three phase oil immersed transformer series parameters  

Rated capacity(kVA)	High voltage(kV)	High voltage  tapping range(%)	Low voltage(kV)	Vector Group symbol	No-load Loss (kW)	On-load Loss (kW)	No-load Loss (kW)	On-load Loss (kW)	Short-circuit resistance (%)	No-load Current (%)
					Model 11		Model 18
3150	35 38.5	±2 × 2.5 ±3 × 2.5 ±4 × 2.5	6.3 10.5	Yd11	3.04	23.08	2.4	21.9	7	0.72
4000					3.62	27.36	2.9	25.9		0.72
5000					4.32	31.35	3.5	29.7		0.68
6300					5.25	35.06	4.2	33.3	8	0.68
8000					7.2	38.48	5.8	36.5		0.6
10000					8.7	45.32	7.0	43		0.6
12500					10.08	53.87	8.0	51.1		0.56
16000					12.16	65.84	9.7	62.5		0.54
20000					14.4	79.52	11.5	75.5		0.54
25000					17.02	94.05	13.6	89.6	10	0.45
31500					20.22	112.86	16.2	106.4		0.4

  ntent="" style="background-color:#b4c6e7;border-radius:3px;padding:0px 10px;display:inline-block;line-height:36px;box-sizing:border-box;text-align:left;">Product Parameters

When placing order, please provide the following technical parameters

1. kV rated voltage: 2. rated voltage; 3. Combination of three levels, accurate phase and accurate; 4. rated output, and the corresponding accurate level (VA).

 

Model number	Rated capacity(kVA)	Join group label	Voltage combination>(kV)			No-load loss(W)	Load loss(W)	No-load current(%)	Short circuit impedance(%)	Dimensions(mm)			Weight(kg)		Gauge(mm)
			High tension	Tapping range	Low pressure					L	W	H	Oil	Weight
S11-M-30	30	Yyn0 or Dyn11	6 6.5 10 10.5 11 20 30	±5% or ±2×2.5%	0.4	90	600	2.3	4	740	665	875	74	283	400*500
S11-M-50	50					120	870	2		770	675	965	88	362	400*500
S11-M-63	63					140	1040	1.9		820	700	1020	112	442	450*500
S11-M-80	80					180	1250	1.9		835	705	1040	117	481	450*500
S11-M-100	100					200	1500	1.8		850	715	1055	122	520	450*500
S11-M-125	125					240	1800	1.7		1180	740	1115	154	667	500*500
S11-M-160	160					280	2200	1.6		1225	775	1175	176	788	500*500
S11-M-200	200					340	2600	1.5		1245	790	1195	193	898	500*500
S11-M-250	250					400	3050	1.4		1340	880	1230	209	1027	550*500
S11-M-315	315					470	3650	1.4		1425	935	1260	234	1177	550*500
S11-M-400	400					560	4300	1.3		1470	955	1330	265	1399	550*600
S11-M-500	500					680	5100	1.2		1490	960	1405	283	1576	550*600
S11-M-630	630					840	6200	0.9	4.5	1585	1030	1370	317	1771	660*660
S11-M-800	800					980	7500	0.8		1675	1090	1480	366	2128	660*820
S11-M-1000	1000					1150	10300	0.7		1775	1175	1530	402	2379	660*820
S11-M-1250	1250					1360	12800	0.6		1965	1155	1700	542	3023	820*820
S11-M-1600	1600					1640	14500	0.6		2055	1210	1800	616	3591	820*820
S11-M-2000	2000					1950	18500	0.5	5.5	2090	1280	1930	950	2830

Applicable Environment

1. High ambient temperature: +40ºC
2. Low ambient temperature: -25ºC
3. Altitude: <1000m
4. Monthly average relative humidity: 90% (20ºC)
5. Installation location: used in chemical plants, factories, remote places and harsh environment.

1. Are you manufacturers ?  We are a professional factory with 10 years experience in the field of High and low Voltage switch-gears, Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.

2. Do you accept customized serveice ? We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provice a satisfied project according to your drawing and parameters

3. What is your terms of payment ? T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and pack-ages before you pay the balance.

4. Can your product be customerized ? Considering differences in voltage. frequency and other speciality of transformer product in different countries and regions,our product can be customerized according to your requirements.

5. How do you solve quality problems? Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make asatisfied soluton within 1 days .

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