Nantong Dazheng Electric Transformer Factory

Nantong Dazheng Electric Co., Ltd. is located in Nantong City, Jiangsu Province. Founded in 2005, Dazheng Electric is a professional high-tech manufacturing enterprise integrating R&D, manufacturing, sales and service. It mainly produces various types of oil-immersed power transformers, dry-type transformers, European box transformers, American box transformers and other transformers. We use modern scientific management, advanced production testing equipment and complete product after-sales service to ensure that the transformer production process complies with the international ISO9001 quality management system and ISO40001 environmental management system certification.

Nantong Dazheng Electric insists on being customer-centric and providing customers with high-quality, competitively priced products to achieve a win-win situation. With advanced management, first-class technology, reliable quality and perfect service, we provide high-quality power transmission and distribution equipment to global customers.

People also ask

What are the series of dry-type transformers in Dazheng?

1  SCB10 series resin insulated dry-type transformer

Transformer dimensions

standard:

Capacity range: 30~2500kVA

Voltage level 0~35kV

Voltage regulation mode: non-excitation voltage regulation or on-load voltage regulation

Tap range: ±5%, ±2×2.5%, ±4×2.5%

Frequency: 50Hz or 60Hz

Number of phases: three-phase or single-phase

Connection group label: Yyn0, Dyn11 or others

Short circuit impedance: standard impedance

When the altitude is less than 1,000 meters and the ambient temperature is lower than 40°C. When the above usage conditions are exceeded, corresponding quota adjustments should be made according to the standards.

Maximum temperature rise: 100k

Cooling method: self-cooling (AN) or air-cooling (AF)

Protection level: IP00, IP20, IP23

Insulation level: F level

Characteristics of dry-type transformers

1. The high voltage winding is made of enameled copper wire or double glass fiber wrapped flat copper wire, and the low voltage winding is made of copper foil. The high-voltage winding is filled with glass fiber mat, and imported epoxy resin without filler is cast in a vacuum state. After curing, it forms a solid whole with good mechanical strength, small partial discharge and high reliability.
2. It is flame retardant, explosion-proof, does not pollute the environment, and can be installed in load centers.
3. The coil does not absorb moisture, and the core and clamps have been treated with special processes to operate in 100% relative humidity and other harsh environments. Intermittent operation does not require dehumidification treatment.
4. High resistance to short circuit and lightning impact.
5. The resin insulation layer inside and outside the coil is thin and has good heat dissipation performance. The cooling method generally adopts air natural cooling (AN). An air cooling system (AF) can be configured for transformers of any protection level.
6. Low loss, good power saving effect, economical operation and maintenance-free.
7. Small size, light weight, small footprint and easy installation.

2  SC(B)12 type dry type transformer

Low loss: The no-load loss of the product is more than 20% lower than that of the SCB10 model, with excellent energy saving effect and maintenance-free.

Low noise: The product noise level is more than 10-15 decibels lower than the current professional standards.

Low partial discharge: can be controlled below 5PC. The coil cast body has a tight solidified structure, is flame retardant and explosion-proof, and does not pollute the environment.

High mechanical strength: can withstand sudden short-circuit electric force without damage.

Main performance parameters

Model	Rated capacity	Connection group label	Voltage combination			No-load loss (w)	Load loss (w)	No-load current (%)	Short-circuit resistance (%))
			HV	tap range	LV
SCB12-30	30	Yyn0 0r Dyn11	10 6.3 6	±5% ±2×2.5%	0.4	150	710	2.4	4.0
SCB12-50	50					215	1000	2.4
SCB12-80	80					295	1380	1.8
SCB12-100	100					320	1570	1.8
SCB12-125	125					375	1850	1.8
SCB12-160	160					430	2130	1.6
SCB12-200	200					495	2530	1.6
SCB12-250	250					575	2760	1.4
SCB12-315	315					705	3470	1.4
SCB12-400	400					785	3990	1.2
SCB12-500	500					930	4880	1.2
SCB12-630	630					1070	5880	1.0
SCB12-800	800					1215	6960	1.0	6.0
SCB12-1000	1000					1415	8130	1.0
SCB12-1250	1250					170	9690	1.0
SCB12-1600	1600					160	11730	1.0
SCB12-2000	2000					2440	14450	0.8
SCB12-2500	2500					2880	17170	0.8

3  SCB(13) dry type transformer

Low loss: The no-load loss of the product is more than 30% lower than that of the SCB10 model. It has excellent energy saving effect and is maintenance-free.

Low noise: The product noise level is more than 10-15 decibels lower than the current professional standards.

Low partial discharge: can be controlled below 5PC. The coil cast body has a tight solidified structure, is flame retardant and explosion-proof, and does not pollute the environment.

High mechanical strength: can withstand sudden short-circuit electric force without damage.

Data Sheet

Model	Rated capacity	Connection group label	Voltage combination			No-load loss (w)	Load loss (w)	No-load current (%)	Short-circuit resistance (%))
			HV	tap range	LV
SCB13-30	30	Yyn0 Or Dyn11	11 10.5 10 6.6 6	±5% ±2×2.5%	0.4	135	710	2.3	4.0
SCB13-50	50					190	1000	2.2
SCB13-80	80					260	1380	1.7
SCB13-100	100					290	1570	1.7
SCB13-125	125					340	1850	1.5
SCB13-160	160					385	2130	1.5
SCB13-200	200					445	2530	1.3
SCB13-250	250					515	2760	1.3
SCB13-315	315					635	3470	1.1
SCB13-400	400					705	3990	1.1
SCB13-500	500					835	4880	1.1
SCB13-630	630					935	5880	0.9
SCB13-800	800					1095	6960	0.9	6.0
SCB13-1000	1000					1275	8130	0.9
SCB13-1250	1250					1505	9690	0.9
SCB13-1600	1600					1765	11730	0.9
SCB13-2000	2000					2195	14450	0.7
SCB13-2500	2500					2590	17170	0.7

4  SCB14 dry type transformer features:

1. The SCB14 dry-type transformer has the characteristics of strong short-circuit resistance, small maintenance workload, high operating efficiency, small size, and low noise. It is often used in places with high performance requirements such as fire protection and explosion-proof. It is safe, fire-proof, non-polluting and can be directly run on high-load electricity.
2. Adopting the best domestic technology, it has high mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, high reliability and long service life.
3. Low loss, low noise, obvious energy saving effect, maintenance-free
4. Good heat dissipation performance, strong overload capability, and can operate at over capacity for a short time under forced air cooling.
5. It has certain moisture-proof performance and can operate in harsh environments with high humidity.
6. Dry-type transformers can be equipped with complete temperature detection and protection systems.
   

   Model	Rated capacity	Connection group label	Voltage combination			No-load loss (w)	Load loss (w)	Short-circuit resistance (%))
   			HV	tap range	LV
   SCB14-30-NX2	30	Yyn0 or Dyn11	11 10.5 10 6.6 6	±5% ±2×2.5%	0.4	150	670	4.0
   SCB14-50-NX2	50					215	940
   SCB14-80-NX2	80					295	1480
   SCB14-100-NX2	100					375	1740
   SCB14-125-NX2	125					430	2000
   SCB14-160-NX2	160					495	2370
   SCB14-200-NX2	200					575	2590
   SCB14-250-NX2	250					705	3270
   SCB14-315-NX2	315					785	3750
   SCB14-400-NX2	400					930	4590
   SCB14-500-NX2	500					1070	5530
   SCB14-630-NX2	630					1040	5610
   SCB14-800-NX2	800					1215	6550	6.0
   SCB14-1000-NX2	1000					1415	7650
   SCB14-1250-NX2	1250					1670	9100
   SCB14-1600-NX2	1600					1960	11050

   5  Summary of SCB18 dry type transformer characteristics:

   Low loss, small partial discharge, low noise, strong heat dissipation ability

   Safe, flame retardant and fireproof, no pollution, can be installed directly in the load center

   Maintenance-free, easy installation, low overall operating cost

   45° fully oblique stepping seam core

   Multi-layer segmented cylindrical high voltage coil

   Longitudinal air channel foil structure low voltage coil

   Sturdy and beautiful protective case

   Complete temperature protection control device