20kV, SC(B) series epoxy resin casting dry-type transformer
Classification:
Key Words:
10kV, 20kV, SC(B) series epoxy resin casting dry-type transformer
500kva dry type transformer company
china epoxy resin casting dry-type transformer
dry type transformers

Product Model Meaning
model number | S | C | (B) | - | □ | □ | / | □ |
number meaning | three-phase (physics) | Epoxy resin casting type | Foil coils are available for low voltage |
| Performance Level Designator | Rated capacity (kVA) |
| Voltage level (kV) |
Product Overview
20kV, SC(B) series dry-type transformers can be used as the upgrading products of oil-immersed distribution transformers, and are the products with the best performance among all kinds of dry-type transformers, especially suitable for urban power grids, high-rise buildings, business centers, theaters, hospitals, hotels, tunnels, subways, stations, docks, airports, underground power stations, laboratories, combined substations and other important places.
Product Features
1.All-copper winding structure: High-voltage/low-voltage are made of copper (copper wire or copper foil), glass fiber reinforced epoxy resin vacuum casting, forming a high-strength cylinder, excellent mechanical properties, low local discharge electrode, excellent reliability.
2.safety and environmental protection: Flame retardant and explosion-proof design, self-extinguishing insulating materials do not produce toxic gases, no risk of environmental pollution, short circuit without arc potential.
3.Strong weather resistance: Coil moisture resistance and corrosion resistance, special anti-corrosion treatment of the iron core, adapting to 100% humidity and harsh environments, intermittent operation without maintenance.
4.High reliability: Excellent performance of short-circuit and lightning impact resistance, to ensure the stability of the power grid.
5.Efficient heat dissipation: Thin resin layer optimizes heat dissipation, standard natural air cooling (AN), optional air cooling system (AF) to enhance overload capacity.
6.Economic and efficient: Low-loss design, energy-saving and maintenance-free operation, low life cycle cost.
7.Compact and flexible: Small size, light weight, installation without oil tank/fire fighting facilities, saving space and infrastructure costs.
8.Nearby deployment: Can be dispersed in the load center, shorten the low-voltage lines, reduce the comprehensive investment.
Product Certificate
Transformer Workshop

Dry type transformers are advanced electrical power equipment designed for safe and efficient voltage conversion without the use of liquid insulating oil. Instead, they rely on air or solid insulation materials such as epoxy resin to ensure reliable operation. These transformers are widely used in commercial buildings, industrial facilities, hospitals, schools, data centers, and urban power distribution systems where safety and environmental protection are critical.
One of the main advantages of dry type transformers is their high safety performance. Since they do not use flammable insulating oil, the risk of fire is significantly reduced. This makes them especially suitable for indoor installations and environments with strict fire safety regulations.
Dry type transformers also offer excellent environmental protection and low maintenance requirements. They do not require oil testing or leakage management, which reduces operational costs. In addition, they provide stable performance, strong insulation, and efficient heat dissipation, ensuring long service life and reliable power distribution.
| 20kV, SC(B)10 dry-type transformer | ||||||||||
Rated Capacity | Linkage group labeling | voltage combination | No-load current | Load Losses at Different Insulation Thermal Ratings | No-load loss | Short Circuit Impedance | ||||
High voltage | High-voltage tap range | Low Voltage | B | F | H | |||||
50 | Yyn0 | 20 | ±5 | 0.4 | 2.2 | 1160 | 1230 | 1320 | 340 | 6.0 |
100 | 2.0 | 1880 | 1990 | 2130 | 540 | |||||
160 | 1.6 | 2340 | 2470 | 2660 | 675 | |||||
200 | 1.6 | 2800 | 2940 | 3140 | 740 | |||||
250 | 1.4 | 3260 | 3420 | 3710 | 840 | |||||
315 | 1.4 | 3890 | 4080 | 4370 | 970 | |||||
400 | 1.2 | 4650 | 4840 | 5180 | 1150 | |||||
500 | 1.2 | 5510 | 5790 | 6170 | 1350 | |||||
630 | 1.0 | 6530 | 6840 | 7360 | 1530 | |||||
800 | 1.0 | 7810 | 8260 | 8830 | 1750 | |||||
1000 | 0.8 | 9230 | 9780 | 10450 | 2070 | |||||
1250 | 0.8 | 10920 | 11540 | 12350 | 2380 | |||||
1600 | 0.8 | 13090 | 13870 | 14860 | 2790 | |||||
2000 | 0.6 | 15480 | 16380 | 17570 | 3240 | |||||
2500 | 0.6 | 18380 | 19380 | 20710 | 3870 | |||||
2000 | 0.6 | 16910 | 17860 | 19000 | 3240 | 8.0 | ||||
2500 | 0.6 | 20230 | 21280 | 22700 | 3870 | |||||
| Note: The above data is only for reference when designing and selecting, and the final data is subject to the real thing. | ||||||||||
| 20kV, SC(B)11 dry-type transformer | ||||||||||
Rated Capacity | High voltage | High-voltage tap range | Low Voltage | Linkage group labeling | No-load loss | Load Loss(W) | No-load current | Short Circuit Impedance | ||
B | F | H | ||||||||
50 | 20 | ±2.5 | 0.4 | Dyn11 | 305 | 1160 | 1230 | 1310 | 1.80 | 6 |
100 | 485 | 1870 | 1990 | 2130 | 1.60 | |||||
160 | 600 | 2330 | 2470 | 2640 | 1.40 | |||||
200 | ±2×2.5 | 655 | 2770 | 2940 | 3140 | 1.40 | ||||
250 | 755 | 3220 | 3420 | 3660 | 1.12 | |||||
315 | 870 | 3850 | 4080 | 4360 | 1.20 | |||||
400 | 1030 | 4650 | 4840 | 5180 | 1.00 | |||||
500 | 1210 | 5460 | 5790 | 6190 | 1.00 | |||||
630 | 1370 | 6450 | 6840 | 7320 | 0.90 | |||||
800 | 1570 | 7790 | 8260 | 8840 | 0.90 | |||||
1000 | 1860 | 9220 | 9780 | 10400 | 0.80 | |||||
1250 | 2140 | 10800 | 11500 | 12300 | 0.80 | |||||
1600 | 2510 | 13,000 | 13800 | 14800 | 0.80 | |||||
2000 | 2910 | 15400 | 16300 | 17500 | 0.60 | |||||
2500 | 2480 | 18200 | 19300 | 20700 | 0.60 | |||||
2000 | 2910 | 16800 | 17800 | 19100 | 0.60 | 8 | ||||
2500 | 3480 | 20000 | 21200 | 22700 | 0.60 | |||||
| Note: The above data is only for reference when designing and selecting, and the final data is subject to the real thing. | ||||||||||
| 20kV, SC(B)12 dry-type transformer | |||||||||
Rated Capacity | High voltage | High-voltage tap range | Low Voltage | Linkage group labeling | No-load loss | Load Loss | Short Circuit Impedance | ||
B | F | H | |||||||
50 | 20 | ±2.5 | 0.4 | Dyn11 | 275 | 1230 | 1310 | 1.80 | 6.0 |
100 | 440 | 1990 | 2130 | 1.60 | |||||
160 | 540 | 2470 | 2640 | 1.40 | |||||
200 | ±2×2.5 | 590 | 2940 | 3140 | 1.40 | ||||
250 | 680 | 3420 | 3660 | 1.12 | |||||
315 | 785 | 4080 | 4360 | 1.20 | |||||
400 | 930 | 4840 | 5180 | 1.00 | |||||
500 | 1090 | 5790 | 6190 | 1.00 | |||||
630 | 1235 | 6840 | 7320 | 0.90 | |||||
800 | 1415 | 8260 | 8440 | 0.90 | |||||
1000 | 1675 | 9780 | 10400 | 0.80 | |||||
1250 | 1930 | 11500 | 12300 | 0.80 | |||||
1600 | 2260 | 13800 | 14800 | 0.80 | |||||
2000 | 2620 | 16300 | 17500 | 0.60 | |||||
2500 | 3130 | 19300 | 20700 | 0.60 | |||||
2000 | 2620 | 17800 | 19100 | 0.60 | 8.0 | ||||
2500 | 3130 | 21200 | 22700 | 0.60 | |||||
| Note: The above data is only for reference when designing and selecting, and the final data is subject to the real thing. | |||||||||
Recommend Products
Consult
We will offer custom quotes and powerful solutions to meet your needs. Send us your details and we'll get back to you as soon as possible.









