Copper Winding Auto Transformer 400kVA 33kv 23kv 380V/220V 400V 660V 50Hz Oil or Dry Type with Bushings Enclosure

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Three
• Model NO.: QHS13 20kv
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC, ISO14001, ISO45001, CQC, CE, UL, Kema
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: EI
• Brand: Qinghao or Customized
• Transformador Fabricado En China: Kv kVA Mva Transmission Distribution-Transformer
• Prefabricated Transformer Substation: Two Three Winding Outdoor Liquid Filled
• Customized Transformer: China Manufacturer Factory Supplier Vendor
• Hot Selling Transformer: Pad Mounted, Pole Mounted, Tap Changer,
• Top 10 Popular Products: Single Phase, Prefabricated Substation, Switchgear
• Low Medium High Voltage: IEC60076 / GB1094/ANSI/IEEE Standard
• Connection Vector Groups: Wye-Delta, Dyn1/Dyn11/Yyn0/Ynd1/Ynd11
• Rated Voltage: 10/20/33/0.4kv, 33/10kv
• Low Frequency: 50/60Hz
• Warranty: 24 Months
• Insulating Medium: Mineral Oil / Vegetable Oil
• Insulation Class/Cooling Ways: a-Class, Onan, Onaf, Knan, Ofat, Odaf
• Tapping Range: +/-2 X 2.5%(Customized), Nltc/Oltc
• Winding Coil Material: Copper / Aluminium
• Core Material: Silicon Steel / CRGO
• Transport Package: Wooden Case or Pallet
• Specification: 11kv, 22kv, 35kv, 50kva-3150kva
• Trademark: Qinghaobiandian
• Origin: China
• HS Code: 8504220000
• Production Capacity: 10000PCS/Year

Product Description

Product Description

Qinghao is a leading professional power transmission and distribution manufacturer in electrical fields for over 20 years with a registered capital of USD8,000,000 (Eight Million Dollars). Except for ISO9001, ISO14001, ISO45001 certificates, we are also TUV audited suppliers with AAA enterprise and AAA products honors.  All products comply with GB and IEC related standards, which mainly include oil immersed distribution transformer, dry-type transformer, amorphous alloy transformers, combined transformer substations, cable branch box, high low voltage switchgear distribution equipment. 

Oil distribution transformer includes hermetically sealed, amorphous alloy, conservator type and on-load tap changer type, which is usually pole mounted or installed in distribution station for daily lighting and factory power whose LV output up to 0.4kV. Our distribution transformer rating is up to 2500kVA, and primary voltage up to 35kV. The corrugated tanks as thermal expansion and contraction component enable the transformer oil completely isolated with the atmosphere. Oil distribution transformer with primary voltage range of 6,10,10.5,11,20,22,24,33, 35,38.5kV can be manufactured according to customer requirements.

High efficiency, low loss, low noise, strong load resistance and long service life.

Main Characteristics:
1. Designed by patented technology and software with premium performance.
2. Core is made of high quality cold-rolled grain-oriented silicon steel sheet which produced in step-lap technology.
3. Winding is using high strength enameled wire or paper-insulated wire or copper belt, which offers uniform distribution of ampere-turns, reasonable insulation structure with high ability to withstand short-circuit.
4. Oil tank is corrugated type with high corrosion resistance. Tank surface pre-treatment liquid and coating powder adopts international top brands. The tank is degreasing, pickling, phosphorated, electrophoresis by automatic production lines, then power spray coating and heat-solidify.
5. The active part applies core free-hanging structure. The gasket is made of high-quality acrylate rubber which can inhibit ageing caused by sun and heat.

Advantages:
1. Low loss, low noise, low partial discharge, high reliability.
2. Safety with elegant appearance.
3. Convenient installation and simple maintenance.
4. Compact with small occupied area.

Applications
1. Building Infrastructure and Industrial: Airports, hospitals, factories, shopping malls, hotels, commercial and residential towers.
2. Utility: Generation, transmission, distribution substations, water and waste water treatment plants.
3. Oil and Gas: Oil and gas plants, petrochemical plants and refineries.

Service environment:
1. Ambient temperature: Maximum +40ºC, Minimum -40ºC
2. Altitude: less than 1000 meters.
3. Seismic level: less than 3m/s2 at horizontal direction and less than 1.5m/s2 at vertical direction.
4. Installation environment: No obvious and heavy pollution, no explosive and corrosive gas and dust, with good air ventilation and no severe vibration and shock.
(Note: If the application environment is different from the above standard conditions, please contact for customized designs.)

Please check below quick links for other product types. 

 

Product Parameters

The rated voltage 10kv 20kv 33kv can be customized as customers' requirements. For instant communication, please click .  
 

High Voltage:20(15,20,22)KV                                  Connection Symbol:D,yn11 or Y,yn0                           Rated Frequency:50Hz/60Hz               Low Voltage:0.4(0.415,0.433)KV                             Tapping Range of HV:±2x2.5%                                   Insulation Level:LI125 AC55/AC5
Rated power (KVA)	Short-Circuit Impedance(%)	S18 (W)			S13 (W)			S11 (W)			No-Load Curre   nt (%)	Sound pressure dB(A)	Weight (kg)	Overall Dimension(mm)
		No-Load Loss	On-Load Loss75ºC		No-Load Loss	On-Load Loss75ºC		No-Load Loss	On-Load Loss75ºC					L	W	H
			Dyn11	Yyn0		Dyn11	Yyn0		Dyn11	Yyn0
30	5.5	70	550	530	80	690	660	100	690	660	2.1	52	500	700	650	900
50		95	810	770	104	1010	960	130	1010	960	2.0	52	600	730	690	950
63		110	960	920	120	1200	1150	150	1200	1150	1.9	52	650	750	700	980
80		130	1155	1100	144	1440	1370	180	1440	1370	1.8	54	700	770	720	1000
100		145	1385	1320	160	1730	1650	200	1730	1650	1.6	54	750	810	760	1050
125		170	1660	1585	192	2080	1980	240	2080	1980	1.5	56	820	860	780	1100
160		210	2035	1940	232	2540	2420	290	2540	2420	1.4	56	860	910	810	1140
200		245	2400	2290	272	3000	2860	340	3000	2860	1.3	58	910	1220	820	1150
250		290	2820	2680	320	3520	3350	400	3520	3350	1.2	58	950	1270	860	1170
315		345	3370	3210	384	4210	4010	480	4210	4010	1.1	60	1280	1300	900	1200
400		410	3975	3785	456	4970	4730	570	4970	4730	1.0	60	1350	1490	990	1240
500		490	4755	4530	544	5940	5660	680	5940	5660	1.0	62	1560	1570	1040	1250
630	6.0	580	5460		648	6820		810	6820		0.9	62	1840	1600	1090	1260
800		705	6600		784	8250		980	8250		0.8	64	2180	1710	1200	1320
1000		825	9060		920	11330		1150	11330		0.7	64	2540	1820	1270	1430
1250		990	10560		1100	13200		1380	13200		0.7	67	3120	1880	1290	1630
1600		1195	12760		1330	15950		1660	15950		0.6	67	3790	1950	1310	1650
2000		1405	15310		1560	19140		1950	19140		0.6	67	4050	2050	1340	1900
2500		1685	17780		1870	22220		2340	22220		0.5	69	5500	2200	1450	2000
Note: The above parameters are only for designing and selecting  reference, and the final parameters are subject to the actual product.

 

Detailed Photos

Main Components:

1. Core: Typically made of laminated steel sheets.
2. Windings: Primary Winding and Secondary Winding.
3. Insulation: To prevent electrical conductivity between windings and the core, and turns of the windings.
4. Tank: To house magnetic core and windings. 
5. Cooling System: Natural air cooling, forced air cooling, oil cooling with radiators, oil cooling with fans or heat exchangers.
6. Bushing: Maintain electrical isolation. 
7. Tap Changer: Maintain voltage stability despite fluctuations in load or input voltage.
8. Breather: Regulate the intake of air when the oil level expands and contracts due to temperature changes for oil transformer.
9. Conservator: Also called expansion tank to ensure the oil level remains constant in the main tank.

Packaging & Shipping

 

Company Profile

Qinghao Transformer is a reliable and specialized power transmission and distribution equipment manufacturer for over 20 years with a registered capital of USD8,000,000.

Except for ISO9001, ISO14001, ISO45001 certificates, we are also TUV audited suppliers with AAA enterprise and AAA products honors.  All products comply with GB and IEC related standards, which mainly include oil immersed distribution transformer, dry-type transformer, amorphous alloy transformers, combined transformer substations, circuit breaker, cable branch box, high low voltage switchgear cabinet distribution equipment. 

With the concept of "World-class transformers, smart solutions", Qinghao Transformer is devoting to provide high-quality power for customers.

Let us cooperate with a brighter future!

 

FAQ

Q: Are you a Manufacturer or Trading company?   
A: We are the original factory with approved export license.

Q: What's your warranty terms?
A: We offer 24 months warranty time. 

Q: How long is the production time?
A: 25 to 45 days or depending on order requirements.

Q: What should provide to make custom transformer?
A: Technical drawing and specification documents are the best, or you can list key parameters for designing.

Q: How can I trust you?
A: We are TUV aduited supplier with many patent certificates, type test reports, CQC, CE, KEMA, ISO certificates. We can provide on site services for many areas like South America, Indonesia, etc.

 

Certificates

 

Business Partners