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Smart Manufacturing
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Project
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Dry-type power transformer SCB10(11)-10 / SCB18-XX/10-NX1
Hengxuan Electric is committed to providing customers with research and development, production, sales, and installation (repair, testing) of complete electrical equipment and comprehensive supporting services.
Keywords: High and Low Voltage Complete Sets | Box-type Substation | Power Transformer
- Description
- Technical Specifications
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Product Introduction
The SCB series epoxy resin cast dry-type power transformer uses epoxy resin insulation casting and sealing for both high and low voltage windings. It selects insulation materials such as epoxy resin combined with glass fiber, featuring self-extinguishing properties, good thermal conductivity, and flame retardancy. The low voltage winding is wound in a double-layer cylindrical or copper foil style, while the high voltage winding adopts a segmented cylindrical structure. For larger capacity windings, cooling air channels are set in the middle of the winding to reduce winding temperature and expand the heat dissipation area. The windings are degassed and cast/dried in a vacuum state, forming a solid cylindrical whole after curing, ensuring insulation performance, uniform ampere-turn distribution, strong short-circuit resistance, and high lightning impulse withstand level. It does not produce arcs due to short circuits, is crack-resistant, high-temperature resistant, and the resin does not emit toxic or harmful gases at high temperatures. It is flame retardant, explosion-proof, environmentally friendly, enhances mechanical and electrical strength, and extends product service life. The new product is widely used in urban and rural power grid construction and renovation projects, high-rise buildings, commercial centers, hotels, residential communities, tourist attractions, theaters, ports, airports, subways, and box-type substations in power transmission and distribution systems. It is especially suitable for environments with high fire and explosion prevention requirements, large load fluctuations, and harsh or special conditions such as pollution and humidity. It can operate safely and reliably under 100% humidity or normal working voltage for a long time, reducing losses and troubles caused by power outages and maintenance. The new product compensates for the shortcomings of oil-immersed distribution transformers.
Model and Meaning
Product Structure
The new product has advanced performance levels, selecting the "11" type technical indicators. Compared with the GB/T10228-2008 standard, no-load loss is reduced by an average of 20%, no-load current by 70%, load loss by 10%, and noise level measurement is reduced by an average of 10dB. It is energy-saving and environmentally friendly, complying with national industrial and technical policies.
The new product is flame retardant, explosion-proof/corrosion-resistant, pollution-free, and can be installed at the load center. It has good moisture resistance and can operate safely and reliably at 100% humidity. It also has strong overload capacity; forced air cooling can increase the rated capacity by 20–40%.
High/low voltage windings are vacuum cast with epoxy resin and gel cured to be crack-resistant, high-temperature resistant, and mechanically strong. The ampere-turn distribution of high/low voltage windings is uniform, with strong short-circuit resistance and high lightning impulse withstand level.
The new product has a partial discharge amount ≤10pC, good insulation performance, high electrical strength, and extends product service life.
The new product features automatic temperature monitoring and protection functions, can provide different levels of protective enclosures (IP20, IP30) as needed, preventing human and accidental incidents, and is convenient for indoor use.
The new product is compact, lightweight, easy to install, and maintenance-free.
The ordering party should provide the following data related to the product when placing an order with our company.
1. Model Specification
2. Rated Capacity
3. Number of Phases
4. Frequency
5. Voltage Combination/Tap Range
6. Connection Group Mark
7. Short-circuit Impedance
8. Cooling Method
9. Enclosure Protection Level
10. Other Special Requirements/Operating Conditions
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Model Specification
Capacity kVA
Voltage Combination Voltage Combination
Connection Group Number
No-load Loss (W)
Load Loss (W)
No-load Current %
Short-circuit Impedance %
High Voltage kV
Tap Range %
Low Voltage kV
SC11-30/10
30
6 6.3 10 10.5 11
±5% or ±2×2.5%
0.4 Yyn0 Or Dyn11
168
664
2.30
4.0
SC11-50/10
50
238
936
2.20
SC11-80/10
80
322
1296
1.70
SC11-100/10
100
350
1480
1.70
SC11-125/10
125
413
1736
1.50
SC11-160/10
160
476
2000
1.50
SC11-200/10
200
546
2376
1.30
SC11-250/10
250
630
2592
1.30
SCB11-315/10
315
770
3264
1.10
SCB11-400/10
400
854
3752
1.10
SCB11-500/10
500
1015
4592
1.10
SCB11-630/10
630
1176
5528
0.90
SCB11-630/10
630
1134
5608
0.90
6.0
SCB11-800/10
800
1330
6544
0.90
SCB11-1000/10
1000
1547
7648
0.90
SCB11-1250/10
1250
1827
9120
0.90
SCB11-1600/10
1600
2142
11040
0.90
SCB11-2000/10
2000
2905
13600
0.70
SCB11-2500/10
2500
3500
16160
0.70
Model Specification
Capacity kVA
Voltage Combination
Connection Group Number
No-load Loss (W)
Load Loss (W)
No-load Current %
Short-circuit Impedance %
High Voltage kV
Tap Range %
Low Voltage kV
SC11-50/20
50
20
22
24
±5 %
or
±2×2.5 %0.4
Yyn0
or
Dyn11300
1230
2.20
6.0
SC11-100/20
100
470
1980
1.70
SC11-160/20
160
580
2460
1.50
SC11-200/20
200
640
2930
1.30
SC11-250/20
250
730
3400
1.30
SCB11-315/20
315
840
4060
1.10
SCB11-400/20
400
1000
4820
1.10
SCB11-500/20
500
1170
5760
1.10
SCB11-630/20
630
1320
6800
0.90
SCB11-800/20
800
1520
8220
0.90
SCB11-1000/20
1000
1790
9730
0.90
SCB11-1250/20
1250
2060
11480
0.90
SCB11-1600/20
1600
2410
13790
0.90
SCB11-2000/20
2000
2800
16290
0.70
SCB11-2500/20
2500
3340
19270
0.70
Application Industries
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