Oil Immersed Electrical Power Distribution Transformer 50kVA 100kVA 150kVA 200kVA

Product Description

The three-phase oil immersed distribution transformer produced by our company adopts a new insulation structure, which improves the ability to withstand short circuit. The core is made of high quality cold-rolled silicon-steel sheet. High quality oxygen free copper wire is used in the high voltage winding as the material and it adopts multilayered drum type structure. All fasteners have been processed with special treatment to prevent them from loosening.
As high-tech product that promoted by the country, the product has many advantages such as high efficiency, low loss.Its social benefits are remarkable that it will save much of electricity consumption and operating cost.
S9 series products reduce the no-load loss,load loss, no-load current, compared with the S7 series decreased by10%, 24%,46%.respectively. thus reducing operating costs by 19%.
S11 series products on the basis of S9 series. the no-load loss is reduced by an average of 30%; the no-load current drops by 70-85% compared to S9; the average temperature rise is reduced by10K, the service life of the product has more than doubled. Even under 20% overloads, it can still run for a long time and thenoise of the product is reduced by 2-4 decibels.
The 'M' in S11(M)R- indicates that the tank is fully sealed, and the fully enclosed distribution transformer eliminates the oil tank in the case of a conventional oil immersed transformer.
The wave fins of the tank instead of the tubing are cold. But the radiating elements, made of high quality cold-rolled sheet comugated tank in a special production line. wave fin with transformer oil volume expansion and shrinkage, so that the transformer is separated from the atmosphere to prevent and slow down oil deterioration and insulation damp. All these ensure the reliability of operation and without maintenance.
The surface of corrugated oil tank is coated with three-proof paint after degreasing, rust removing and phosphating treatment. It is suitable for use in metallurgy, petrochemical industry, mining and other environments.
S11(M) R- R stands for ribbon-wound core. It applies low-loss cold-steel plate of high-quality. It has high degree of mechanization and it is not necessary to shear and punch which eliminate horizontal and longitudinal power connetion of traditional iron core.
1.To obtain lower no-load current, so that the transformer reactive power loss level is lower.
2.To achieve lower noise levels, so that transformers more environmentally friendly.
3.The integral core clamping device is mainly clamping coil, thus further strengthening the coil's ability to withstand short circuit current.

Reliable Structure
Our company in the traditional structure and mature technology based on a lot of improvements, such as the use of:
1.With longitudinal oil path spiral coil, interior cooling effect better;
2.Improved the effectual support of the loop's terminal face to strengthen the anti-short circuit electricity capability;
3.The new hoisting structure and body positioning structure are adopted to ensure more reliable in long distance transportation and operation;
4.We have many unique and reliable structures to serve you;
5.When you choose higher performance level transformers, you will enjoy greater technique intensity.
Excellent Materials
1.We Choose oxygen free copper wires with lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
2.We use high quality silicon steel sheet,with the improvement of performance level, use lower unit loss of silicon steel sheet , so that the transformer no-load loss is lower.
3.We use high-quality laminate insulation, no cracking, even under the effect of short circuit current. wensibudong.
4.We use deep filtered transformer oil, lower water content, gas content, impurity levels, transformer work more reliable.
5.We use high quality rubber sealing materia, which can prevent the transformers from aging or leakage.
6.All raw materials through the quality inspection, and all the raw materials factories has pass through the national standard ISO9000 inspection.

Enforce The Standard:

GB 1094.1-1996

GB 1094.2-1996

JB/T 10088-2004

GB 1094.3-2003

GB 1094.5-2003

GB/T 10237-1988

GB/T 6451-1999

GB/T 7595-1987

JB/T3837-1998

Product model description:
XX X - X - X / X X
1 2 3 4 5 6

1.Product model letters ( D-, single phase, S- three-phase, F- air-cooled, Z- on load voltage regulation)

2.Performance level codes (9, 10, 11, 12)

3.Special or special construction code (M-,hermetically sealed, R- coil core)

4.Rated capacity kVA

5.Voltage level kV

6.Special use environment code(GY-plateau,WF-corrosion protection, TA- dry tropical, TH warm tropical)

Technical Parameters:

S11,SZ11 Series 10kv power transformer

(30kva-2500kva 3-phase duplex winding non-excited tap-changing distribution transformer)

Rated Capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No- load Current (%)	Impedance Voltage (%)	Weight(kg)			Boundary Dimension(mm) (L)x(W)x(H)		Gauge Vertical/ Horizontal(mm)
	HV (kV)	HVTap Range	LV (kV)		No- load	Load			Body	Oi	Total	Fully Sealed	Un-Fully Sealed
30	6 6.3 10 10.5 11	±5 ±2X2.5	0.4	Dyn11 Yzn11 Yyn0	0.10	0.63/0.60	2.3	4.0	150	750	340	730x780x930	950x720x1000	400/400
50					0.13	0.91/0.87	2.0		220	950	440	800x750x965	1020x700x1035	400/400
63					0.15	1.09/1.04	1.9		260	110	490	820x780x970	1140x740x1040	400/400
80					0.18	1.31/1.25	1.9		300	120	580	840x800x1000	1060x720x1070	400/400
100					0.20	1.58/1.50	1.8		350	120	660	850x840x1010	1105x760x1110	450/400
125					0.24	1.89/1.80	1.7		400	130	700	860x900x1080	1120x800x1150	550/550
160					0.28	2.31/2.20	1.6		480	160	840	1220x840x1100	1440x760x1290	550/550
200					0.34	2.73/2.60	1.5		560	170	920	1250x860x1150	1470x780x1350	550/550
250					0.40	3.20/3.05	1.4		640	180	1040	1260x850x1220	1480x780x1420	550/550
315					0.48	3.83/365	1.4		800	200	1220	1340x900x1200	1560x840x1400	550/550
400					0.57	4.52/4.30	1.3		980	240	1460	1380x900x1260	1600x840x1520	550/550
500					0.68	5.41/5.15	1.2		1130	280	1710	1520x1000x1330	1740x960x1590	660/660
630				Dyn11 Yyn0	0.81	6.20	1.1	4.5	1350	330	2050	1580x1040x1270	1900x1040x1600	660/660
800					0.98	7.50	1.0		1610	400	2460	1650x1160x1400	1970x1160x1730	820/820
1000					1.15	10.30	1.0		1690	450	3680	1750x1240x1460	2070x1240x1970	820/820
1250					1.36	12.00	0.9		1910	500	3050	1800x1240x1550	2100x1240x1870	820/820
1600					1.64	14.50	0.8		2330	590	3800	1830x1800x1930	1830x1800x1930	820/820
2000					1.96	17.80	0.6		2750	780	4660	1950x1900x2080	1950x1900x2080	820/820
2500					2.31	20.70	0.5		3350	920	5440	2060x1930x2130	2160x1930x2130	1070/1070

S11,SZ11 Series 10kv power transformer

630kva-6300kva 3-phase Duplex Winding Non-excited Tap-changing Power Transformer

Rated Capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No- load Current (%)	Impedance Voltage (%)	Weight(kg)			Gauge Vertical/ Horizontal(mm)
	HV (kV)	HVTap Range	LV (kV)		No- load	Load			Body	Oi	Total
630	6 6.3 10 10.5 11	±5 ±2X2.5	3 3.15 6.3	Yd11	0.84	6.93	1.1	5.5	1780	450	2710	750/660
800					1.02	8.46	1.0		2100	520	3310	850/660
1000					1.20	9.92	1.0		2580	600	3860	850/820
1250					1.42	11.80	0.9		2880	700	4370	850/820
1600					1.71	14.11	0.8		3400	780	4760	900/820
2000					2.04	16.93	0.8		3800	890	5570	900/820
2500					2.40	19.67	0.8		4350	960	6670	1070/1070
3150					2.84	23.09	0.7		4940	1180	8500	1070/1070
4000	10 10.5 11		3.15 6.3		3.48	27.36	0.7		5900	1580	9850	1070/1070
5000					4.16	31.38	0.7		6850	1760	11580	1070/1070
6300					4.96	35.06	0.6		7920	1910	13650	1070/1070

200kva~2500kva 3-phase duplex winding on-load tap-changing distribution transformer

Rated Capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss(kW)		No- load Current (%)	Impedance Voltage (%)	Weight(kg)			Gauge Vertical/ Horizontal(mm)
	HV (kV)	HVTap Range	LV (kV)		No- load	Load			Body	Oi	Total
200	6 6.3 10	±4×2.5	0.4	Dyn11 Yyn0	0.39	2.91	1.5	4.0	980	260	1530	650/550
250					0.45	3.42	1.4		1070	310	1740	650/550
315					0.54	4.10	1.4		1320	350	1980	650/550
400					0.65	4.96	1.3		1580	430	2270	750/550
500					0.77	5.90	1.2		1750	450	2500	750/660
630					0.97	7.27	1.1	4.5	1900	530	2920	750/660
800					1.13	8.89	1.0		2150	600	3320	850/660
1000					1.38	10.43	1.0		2480	680	3710	850/820
1250					1.58	12.40	0.9		2620	770	4200	850/520
1600					1.94	14.79	0.8		3100	880	4850	900/820
2000					2.27	18.69	0.6		3980	1080	5880	900/820
2500					2.52	21.74	0.6		3950	1300	6370	1070/1070

S11 Series 20kv distribution transformer

30kva~2500kva 3-phase duplex winding non-excited tap-changing distribution transformer

Rated Capacity (kVA)	Voltage Combination and Tap range			Vector Group Symbo	No-load Loss(kW)	Load Loss(kW)	No-load current(%)	Short-circult Impedance Voitage(%)
	HV(kV)	HVTap Range	LV(KV)
30	20	±5	0.4	Dyn11 Yzn11 Yyn0	0.10	0.69/0.66	2.1	5.5
50					0.13	1.01/0.96	2.0
63					0.15	1.20/1.15	1.9
80					0.18	1.44/1.37	1.8
100					0.20	1.73/1.65	1.6
125					0.24	2.08/1.98	1.5
160					0.29	2.54/2.42	1.4
200					0.34	3.00/2.86	1.3
250					0.40	3.52/3.35	1.2
315					0.48	4.21/4.01	1.1
400					0.57	4.97/4.73	1.0
500					0.68	5.94/5.66	1.0
630					0.81	6.82	0.9	6.0
800					0.98	8.25	0.8
1000					1.15	11.33	0.7
1250					1.38	13.20	0.7
1600					1.66	15.95	0.6
2000					1.95	19.14	0.6
2500					2.34	22.22	0.5

S13 Series 10kv distribution transformer

30kva~2500kva 3-phase duplex winding non-excited tap-changing distribution transformer

Rated Capacity(kVA)	Voltage Combination and Tap range			Vector Group Symbol	Loss (kW)		No- load current (%)	Impedance Voltage (%)	Weight(kg)			BoundaryDimension(mm) (L)x(W)x(H)		Gauge vertical/horizonta (mm)
	HV (kV)	HVTap Range(%)	LV (kV)		No-load	Load			Body	Oi	Total	Fully sealed	Un-Fully sealed
30	6 6.3 10 10.5 11	±5 ±2X2.5	0.4	Dyn11 Yzn11 Yyn0	0.08	0.63/0.60	2.3	4.0	130	700	300	710x710x930	930x580x1000	400/400
50					0.10	0.91/0.87	2.0		200	800	400	730x710x1010	950x600x1080	400/400
63					0.11	1.09/1.04	1.9		240	900	450	750x730x1040	970x630x1100	400/400
80					0.13	1.31/1.25	1.9		280	100	520	760x740x1060	980x640x1120	400/400
100					0.15	1.58/1.50	1.8		310	100	550	770x750x1130	1000x650x1200	450/400
125					0.17	1.89/1.80	1.7		370	120	640	800x770x1150	1030x670x1220	550/550
160					0.20	2.31/2.20	1.6		440	130	740	820x780x1240	1050x680x1310	550/550
200					0.24	2.73/2.60	1.5		500	140	810	840x810x1260	1070x700x1330	550/550
250					0.29	3.20/3.05	1.4		610	160	970	870x850x1300	1100x750x1370	550/550
315					0.34	3.83/365	1.4		750	200	1200	1180x820x1390	1400x720x1460	550/550
400					0.41	4.52/4.30	1.3		900	240	1420	1260x840x1450	1480x760x1520	550/550
500					0.48	5.41/5.15	1.2		1050	250	1620	1300x860x1500	1560x800x1600	660/660
630				Dyn11 Yyn0	0.57	6.20	1.1	4.5	1240	280	1860	1370x890x1470	1630x930x1680	660/660
800					0.70	7.50	1.0		1510	340	2250	1430x930x1580	1960x930x1680	820/820
1000					0.83	10.30	1.0		1560	360	2410	1600x1100x1610	1860x1100x1720	820/820
1250					0.97	12.00	0.9		1.91	420	2930	1690x1140x1750	1950x1140x1860	820/820
1600					1.17	14.50	0.8		2320	520	3630	1820x1650x2060	1820x1650x2060	820/820
2000					1.26	17.80	0.6		2820	660	4550	1920x1750x2160	1920x1750x2160	820/820
2500					1.49	20.70	0.5		3550	760	5470	2020x1910x2260	2020x1910x2260	1070/1070

S13 Series 20kv distribution transformer

30kva~2500kva 3-phase duplex winding non-excited tap-changing distribution transformer

Rated Capacity (kVA)	VoltageCombination and Tap range			Vector Group Symbo	No-load Loss(kW)	Load Loss(kW)	No-load curent(%)	Short-circult Impedance Voltage(%)
	HV (kV)	HVTap Range(%)	LV (kV)
30	20	±5	0.4	Dyn11 Yzn11 Yyn0	0.08	0.66/0.63	2.1	5.5
50					0.10	0.96/0.91	2.0
63					0.11	1.14/1.09	1.9
80					0.13	1.38/1.31	1.8
100					0.15	1.66/1.58	1.6
125					0.17	1.98/1.89	1.5
160					0.20	2.43/2.31	1.4
200					0.24	2.87/2.73	1.3
250					0.29	3.36/3.20	1.2
315					0.34	4.02/3.83	1.1
400					0.41	4.77/4.51	1.0
500					0.48	5.68/5.40	1.0
630					0.57	6.51	0.9	6.0
800					0.70	7.88	0.8
1000					0.83	10.81	0.7
1250					0.97	12.60	0.7
1600					1.17	15.22	0.6
2000					1.26	19.74	0.6
2500					1.49	21.73	0.5

*The above table data does not represent the parameter configuration of all models, please contact us for more information.

Detailed Photos








Wenzhou Naisite Electric Co., Ltd is a technology oriented transmission and distribution equipment manufacturing enterprises, since its establishment in 2011, focus on transmission and distribution equipment technology progress, advocating technological innovation, introduce new energy prefabricated, a secondary fusion ring cage, environmental protection cabinet,Transformers, cable branch box, box type substation such as intelligent high and low voltage transmission and distribution equipment. Applicable to electric power, railway, petrochemical, subway, municipal construction, steel, coal and other industries. The company's products have achieved a number of technological breakthroughs in environmental protection, miniaturization, intelligence, maintenance free and other aspects. The headquarters of Wenzhou Naisi Electric Co., Ltd is located in the core area of Wenzhou Yueqing Economic Development Zone, "the capital of Electrical appliances in China". Has an excellent domestic intelligent distribution network products assembly line.
The company has a vacuum box helium leak detection system, local discharge test laboratory and other advanced inspection and test equipment system. With the basic experimental facilities and research environment needed for advanced technology development and scientific research, the products are tested according to the international IEC standards. The enterprise has passed the IS09001 quality system certification, IS014001 environmental system certification and OHSAS18001 occupational health and safety management system certification, the products have been obtained the CNAS national accreditation laboratory certification report.

Q: Are you a trading company or manufacturer ?

A: We are a professional factory with 10 years experience in the field of High and Low voltage switchgears,Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.Our factory is the excellent supplier of State Grid Corporation of China .

Q: Do you accept customized serveice ?

A: 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 .

Q: What is your MOQ?

A: Our MOQ is 1 piece .

Q:How long is your delivery lead time ?

A: It depends on your product requirement and quantity . Generally , 5~10 working days is available .

Q: How do you solve quality problems?

A: Please porvide detailed photoes of quality problems. our technical and quality testing department will analyse.we will make a satisfied soluton within 2 days.

Q: What is your payment terms ?

A: 30%T/T in advance,70% before shipment . West union , L/C are also acceptable .

---

>> Automatic Flour Bagging Machine with Packing Belt and Sewing
>> Awning window handle/aluminum glass sliding windows
>> PP PE Plastic Extruded Plastic Geonet Rigid Flat Garden Net Machine
>> Tricycle Motorcycle National Standard ABS off-Road Vehicle Half Face Helmet
>> Livestock Equipment Hot DIP Galvanized Cow Cattle Headlocks
>> SUNLINE dragon coil black snapper 50M fluorocarbon fishing line Power Fishing Line Strong strength
>> Grain Spice Beans Pepper Coffee Grinding Nut Grinder Machine
>> AAA Quality Attractive Price Disposable Baby Diaper Manufacturer From China
>> High Speed C U V Stud and Track Cold Roll Forming Machine
>> PLC Dali 0-10V Dimmable 150W LED Street Lamp for Outdoor Garden Schoolyard Sidewalk Main Road Industrial Park Lighting with Photoecell Intellgent System
>> High Quality EU US UK Plug Charger Usb 20W PD Wall Type-c Fast Charging USB charger Adapter for iPhone 12
>> Smart Control, Vivid Illumination, High Performance RGBW 10W LED Wall Washer
>> 100% Silk Scarves Printing Square Custom Logo High Quality Scarf
>> Ccs CCATv Cable Semi Finish Coaxial Cabl Rg6 For Tv Catv Satellite
>> Custom PVC Zipper Pouch Bag Travel Waterproof Transparent Cosmetics Pouch
>> Alsafe Lightweight Carbon Composite Paintball Bottle Pressure
>> Quality Primacy High Speed Automatic Textile Spool Paper Machinery
>> New 3D LED Pixel Corn Matrix Curtain Light for Ceiling Wall Decor Screen Background
>> Hot Selling Lace up Casual Shoes for Girls &Boys Vulcanized Shoes
>> TCA 100-3000kg/H Fully Automatic Potato Making Machine Frozen French Fries Fryer Machinery Production Line Processing Equipment Trade Plant Price