Environmental Production 30-2500kVA 10kv Three Phase Isolation Current Frequency Dry Type Transformer

• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Core: Core-type Transformer
• Model NO.: S9/S11/S12
• Cooling Method: Dry-type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Leicheng
• Name: Transformer
• Other Name: Tri-Coherent Transformer
• Use: Power Transformer, Distribution Transformer
• Packaging Details: Export Worthy Packing
• Product Productivity: 6000PCS/Year
• Project Design Support: Available
• Online Project Support: Available
• Impedance: 4%-6%
• Rated Voltage-Secondary: 0.4kv and Other
• Winding Material: Copper
• Transport Package: Wooden Case Packing, Container Shipping
• Specification: 2030*1015*1968mm
• Trademark: LEICHENG
• Origin: China
• HS Code: 8504340000
• Production Capacity: 100000t

Product Description

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Product Description

Basic Information.

This product conforms to the national standard GB10941-2013 (IEC 60076) power transformer and GB/T6451-2015 indoor dry transformer technical parameters and requirements. Epoxy resin cast transformer is a kind of solid insulated encapsulated winding power transformer. Epoxy resin dry type transformer adopts epoxy resin as insulation material, high and low voltage winding adopts copper strip (foil), pouring epoxy resin vacuum curing, forming high-strength FRP body. Insulation grades are F and h. Epoxy resin dry type transformer has the characteristics of good electrical performance, strong lightning impact resistance, strong short-circuit resistance, small size, light weight and so on. The temperature display controller can be installed to display and control the working temperature of the transformer winding to ensure the normal service life of the transformer.

Product Details.

 

Structure characteristics of dry-type isolation transformer:
Iron core adopts high quality cold rolled grain oriented silicon steel sheet, iron core silicon steel sheet adopts 45 degree full oblique connection, so that the magnetic flux passes along the direction of joining silicon steel sheet.
There are four winding forms, respectively, winding, epoxy resin with quartz sand filling and casting, glass fiber reinforced epoxy resin casting column (i.e., thin insulation structure) and multi-strand glass fiber impregnated epoxy resin winding.
The third type of glass fiber reinforced epoxy resin casting is generally used, because it can effectively prevent the casting of resin cracking and improve the reliability of the equipment.

 

Product Parameters.

10kV SC(10) Epoxy Resin Cast Dry-Type Transformer
Rated Capacity (KVA)	Voltage Combination (kV)			Connection Symbol	No-Load Current (%)	Impedance Voltage (%)	No-Load Loss (W)	Load Loss (W) (120)	Weight (KG)	Sound Level LPA
	High Voltage (kV)	Tapping
100	10	±5% ±2*2.5%	0.4	Yyn0 Dyn11	1.3	4.0	370	1580	650	44
125					1.3		430	1850	730	45
160					1.1		540	2120	890	45
200					1.1		620	2520	1260	46
250					1.0		720	2750	1290	46
315					1.0		880	3460	1480	47
400					0.9		970	3980	1820	47
500					0.9		1160	4880	2340	48
630					0.8	6.0	1290	5950	2530	50
800					0.8		1520	6950	2780	50
1000					0.7		1770	8120	3310	51
1250					0.7		2090	9690	3680	51
1600					0.6		2450	11720	4480	52
2000					0.6		3320	14450	5050	53
2500					0.5		4000	17160	6210	54

 

20kV SC(B)10 Epoxy Resin Cast Dry-Type Transformer
Rated Capacity (KVA)	Voltage Combination (kV)			Connection Symbol	No-load Current (%)	Impedance Voltage (%)	No-load Loss (W)	Load Loss (W) (120)	Weight (kg)	Sound Level LPA
	High Voltage (kV)	Tapping
100	20	±5% ±2*2.5%	0.4	Yyn0 Dyn11	1.0	6.0	540	1990	710	45
160					0.9		670	2470	980	46
200					0.9		730	2940	1380	47
250					0.8		840	3420	1400	47
315					0.7		960	4060	1600	48
400					0.6		1140	4820	2000	48
500					0.6		1330	5760	2500	49
630					0.5		1510	6800	2700	51
800					0.5		1730	8220	3000	51
1000					0.5		2040	9730	3580	52
1250					0.5		2360	11480	3920	52
1600					0.5		2760	13790	4800	53
2000					0.5		3200	16280	5400	54
2500					0.4		3820	19270	6780	55

Technical parameters of dry-type transformers
1. Frequency of use: 50 / 60HZ;
2. No-load current: < 4%;
3. Dielectric strength: 2000V/min without breakdown; test instrument: YZ1802 pressure tester (20mA);
4. Insulation grade: F grade (special grade can be customized);
5. Insulation resistance: ≥2M ohm test instrument: ZC25B-4 type megger <1000 V);
6. Connection mode: Y/Y, △/Y0, Yo/△, self-coupling (optional);
7. Allowable temperature rise of the coil: I00K;
8. Heat dissipation method: natural air cooling or temperature-controlled automatic heat dissipation;
9. Noise coefficient: ≤30dB
 

Product manufacturing process

Our dry-type transformers need to be designed before production, and when confirming the design of the transformer, we need to pay attention to the two aspects of the winding and insulation.
First of all, confirm that the drawings are consistent with the production of products, to confirm its capacity is correct and then look at the line gauge, find out the line gauge to confirm the number of turns. Secondly, to confirm what kind of wiring, high-voltage drawings to look at its tap out, count the number of turns out of the head, low-voltage look at what kind of winding, the length of the head, the position of the transposition, the winding of the inner and outer diameters, amplitude to the size and so on.
Secondly, according to the coil inside the warp calculate the length and width of the paper tube cardboard, and then from the drawing number to find out the length of the end of the insulation drawings, including oil channel pads and corrugated oil channel thickness, in turn, to find out the end of the circle and the upper and lower iron yoke insulation.
The second part is to start the side winding, insulation.
Third, semi-finished coil insulation test. Low-voltage coil winding is completed and winding process to use a multimeter to measure insulation, mainly to measure whether the turns are short-circuited.
Fourth, lead hot tin pre-assembly and welding. Including lead preparation, lead welding, lead overall assembly welding and insulation wrapping.
Fifth, labeling.
Sixth, coil set.
Seventh, semi-finished product testing.
Eighth, overall assembly.

Fields of application

Transformers have a wide range of applications and many types. According to the use of the classification of power transformer, electric furnace transformer, rectifier transformer, power frequency experiment transformer, voltage regulator, mining transformer and so on. When classified according to the structural form, it can be divided into single-phase and three-phase transformers. 

According to the cooling medium, there are dry transformers, oil-immersed transformers, inflatable transformers, etc., according to the cooling method, there are natural cooling type, air-cooled type, water-cooled type, forced oil circulation water-cooled type, forced oil circulation air-cooled type, water-cooled type, etc., and there are autotransformers, double-coil transformers, three-coil transformers, etc. When classified according to the voltage regulation method, it can be divided into on-load voltage regulation and no-load voltage regulation transformers, and when classified according to the neutral insulation level, it can be divided into fully insulated transformers (the neutral insulation level is the same as the starting insulation level) and semi-insulated transformers. According to the core type classification, can be divided into core type, shell type, radiation type and so on.

 

Dry transformers mainly rely on air convection for cooling, referring to the transformer whose iron core and winding are not impregnated in insulating oil, which is generally used for local lighting and electronic lines. Compared with oil-type transformers, dry transformers have no oil, and there is no fire, explosion, pollution and other problems. Moreover, the dry transformer is free from maintenance, occupies a small area, and does not need to make a separate transformer room. In addition, dry-type transformers have good impact resistance, good mechanical strength, good crack resistance and moisture resistance. Good heat dissipation and other advantages. Compared with the oil-immersed transformer, it suffers from low lightning voltage radiation value, and the probability of lightning strike is relatively small, which has been widely used in national key projects and major projects in our country, and its reliability is well won!
 

Work Environment

Hebei Leicheng Electric Power Technology Co., LTD is a technology-oriented enterprise specializing in R&D, production, sales and services of power transformers, HV/LV switch cabinets and related products.

Since its inception, our company has been committed to the path of professional development. By virtue of its strong technical force, domestic and foreign advanced equipment, innovative ideas and extensive manufacturing experience, it has been certified by ISO9000 and adopts CAD to provide customers with environment-friendly, energy-saving, low-carbon and high-quality products suitable for regional characteristics to meet the market and the basic requirements of different customers.

Currently the company mainly produces HV/LV power distribution cabinets, pre-fabricated substations, power distribution transformers, HV/LV switches and other products.

 Its products cover the national market of China. Also the products are exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.

Packaging & Shipping

 

Certificates

 

FAQ

Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.

Q: What's your warranty terms?
A: We offer 12 months warranty time.

Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.

Q: What's your payment terms?
A: Pay by T/T and  L/C is acceptable.

Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has  3C  certificate. If you need any other Certificate, we can help you to apply it.

Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.

 Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".

Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.

Related Porducts

         Our plants produce all types of transformers and related power equipment, including substations, capacitor cabinets, header cabinets, dry transformers and more. Related products can be found on our home page, or contact me directly, let me help you!

 

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