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10/20/24kV grade SC(B)13/14/18 epoxy resin cast dry-type transformer, which can be used as a replacement product for oil-immersed distribution transformers. It is the best-performing product among all types of dry-type transformers, especially suitable for urban areas. Power grids, high-rise buildings, business centers, theaters, hospitals, hotels, tunnels, subways, stations, docks, airports, underground power stations, test rooms, combined substations and other important places.
Overview
As a leading high-voltage electrical equipment supplier, Chuanli Electric delivers the 10kV/20kV/24kV SC(B)13, SC(B)14, and SC(B)18 epoxy cast resin dry-type transformers. Engineered for high-density urban power grids, data centers, and heavy industrial facilities, these units serve as the ideal eco-friendly alternative to traditional oil-immersed distribution transformers. Whether you are an EPC contractor or an industrial utility manager, our cast resin transformers guarantee peak operational reliability, meeting strict international IEC standards for high-voltage distribution networks.
Model Meaning
| S | C | (B) | □ | – | □ | / | □ |
| ↓ | ↓ | ↓ | ↓ | ↓ | ↓ | ||
| Three Phase | Resin insulation | Low-voltage foil winding | Performance Level Code-Name | Rated capacity (KVA) | Voltage grade (KV) |
Characteristics Of The Product
The 10/20/24kV SC(B)13/14/18 power transformers produced by our factory are dry type transformers with low-noise and low-loss resin wound coil with product type certificate. Due to advanced design, high quality materials, scientific formulation, strict process and high standard of testing, the products have the following characteristics:
The high voltage winding of copper wire, low voltage winding wound of copper wire or copper foil, glass fiber mat is filled with wrapping, vacuum packing of the epoxy used without casting, curing to form a solid cylindrical overall, mechanical high strength, partial discharge of small, high reliability.
Antiflaming. anti-explosion will not pollute the environment. Glass fibre Coil winding coil such with self-extinguishing properties. and will not produce electric arc for short-circuit, does not produce toxic or harmful gases in high temperature condition.
The coil does not absorb moisture, core clamps have a speaal corrosion protection layer, 100% relative humidity and other harsh environment. Interrupt driving need not remove tide treatment.
Short circuit resistant and high level oflightning impulse.
The resin inside and outside the coil is thin, heat dispersion is good. Cooling air is used air cool in nature (AN). For any degree of protection transformer, equip with air-cooled system (AF), in order to improve overload capacity of short-term, and ensure safe operation.
Lower consumption, energy-saving. Running for a savings, can be maintenance-free.
Small volume, light weight, small area, lower installation costs, not need to consider oil tank, rire protection andbackup power, stand-by UPS.
Because there was no fire and explosion danger, installed in the load center can be distributed and fully close to the power point, thus reduang the line low cost and save the expensive facilities costs.
SC (B) 13 Dry Type Transformer
| Type | Rated Capacity (KVA) | Voltage combinations and tap range | Connection group symbol | No-load loss (W) | Load loss 75℃ (W) | No-load current (%) | Short-circuit impedance (%) | |||
| High pressure (kV) | High pressure tap range(%) | Low pressure (kV) | ||||||||
| SC(B)13-30 | 30 | 24 20 10 6.3 6 | ±5% ±2×2.5 / ×2.5 +3 -1 | 0.4 | Yyn0 / Dyn11 | 135 | 640 | 2.0 | 4.0 | |
| SC(B)13-50 | 50 | 195 | 900 | 2.0 | ||||||
| SC(B)13-80 | 80 | 265 | 1240 | 1.5 | ||||||
| SC(B)13-100 | 100 | 290 | 1410 | 1.5 | ||||||
| SC(B)13-125 | 125 | 340 | 1660 | 1.3 | ||||||
| SC(B)13-160 | 160 | 385 | 1910 | 1.3 | ||||||
| SC(B)13-200 | 200 | 445 | 2270 | 1.1 | ||||||
| SC(B)13-250 | 250 | 515 | 2480 | 1.1 | ||||||
| SC(B)13-315 | 315 | 635 | 3120 | 1.0 | ||||||
| SC(B)13-400 | 400 | 705 | 3590 | 1.0 | ||||||
| SC(B)13-500 | 500 | 835 | 4390 | 1.0 | ||||||
| SC(B)13-630 | 630 | 965 | 5290 | 0.85 | ||||||
| SC(B)13-630 | 630 | 935 | 5360 | 0.85 | 6.0 | |||||
| SC(B)13-800 | 800 | 1090 | 6260 | 0.85 | ||||||
| SC(B)13-1000 | 1000 | 1270 | 7310 | 0.85 | ||||||
| SC(B)13-1250 | 1250 | 1500 | 8720 | 0.85 | ||||||
| SC(B)13-1600 | 1600 | 1760 | 10500 | 0.85 | ||||||
| SC(B)13-2000 | 2000 | 2190 | 13000 | 0.7 | ||||||
| SC(B)13-2500 | 2500 | 2590 | 15400 | 0.7 | ||||||
SCB14 Dry Change Level 2 Energy Efficiency
| Rated Capacity (kVA) | No-load loss (W | Load loss(W) | No-load current (%) | Dimensions(mm) |
| 30 | 130 | 640 | 2.0% | 700*360*675 |
| 50 | 180 | 900 | 2.0% | 770*460*710 |
| 80 | 250 | 1240 | 1.5% | 770*460*770 |
| 100 | 270 | 1415 | 1.3% | 790*460*730 |
| 125 | 320 | 1665 | 1.3% | 870*460*845 |
| 160 | 365 | 1915 | 1.1% | 860*460*805 |
| 200 | 420 | 2275 | 1.1% | 940*920*806 |
| 250 | 490 | 2485 | 1.0% | 960*920*906 |
| 315 | 600 | 3125 | 1.0% | 980*970*906 |
| 400 | 665 | 3590 | 1.0% | 1010*970*936 |
| 500 | 790 | 4390 | 1.0% | 1030*970*956 |
| 630 | 885 | 5360 | 0.9% | 1220*1120*906 |
| 800 | 1035 | 6265 | 0.9% | 1270*1170*946 |
| 1000 | 1205 | 7315 | 0.9% | 1300*117*1016 |
| 1250 | 1420 | 8720 | 0.9% | 1370*1220*1051 |
| 1600 | 1665 | 10555 | 0.9% | 1450*1270*1161 |
| 2000 | 2075 | 13005 | 0.7% | 1470*1270*1295 |
| 2500 | 2450 | 15445 | 0.7% | 1450*1320*1336 |
SCB18 Dry Change Level 1 Energy Efficiency
| Rated Capacity (kVA) | No-load loss(W) | Load loss(W) | No-load current (%) | Dimensions(mm) |
| 30 | 130 | 640 | 2.0% | 700*360*675 |
| 50 | 185 | 900 | 2.0% | 770*460*710 |
| 80 | 250 | 1240 | 1.5% | 770*460*770 |
| 100 | 270 | 1415 | 1.3% | 790*460*730 |
| 125 | 320 | 1665 | 1.3% | 870*460*845 |
| 160 | 365 | 1915 | 1.1% | 860*460*805 |
| 200 | 420 | 2275 | 1.1% | 940*920*806 |
| 250 | 490 | 2485 | 1.0% | 960*920*856 |
| 315 | 510 | 3125 | 1.0% | 980*970*906 |
| 400 | 570 | 3590 | 1.0% | 1010*970*936 |
| 500 | 670 | 4390 | 1.0% | 1030*970*956 |
| 630 | 750 | 5365 | 0.9% | 1220*1120*906 |
| 800 | 875 | 6265 | 0.9% | 1270*1170*946 |
| 1000 | 1020 | 7315 | 0.9% | 1300*1170*1016 |
| 1250 | 1205 | 8720 | 0.9% | 1370*1220*1051 |
| 1600 | 1415 | 10555 | 0.9% | 1450*1270*1161 |
| 2000 | 1760 | 13005 | 0.7% | 1475*1270*1295 |
| 2500 | 2080 | 15445 | 0.7% | 1450*1320*1356 |
Complete B2B Power Distribution Solutions
To ensure grid stability and compliance with global energy regulations, choosing between Tier 1 and Tier 2 energy efficiency is critical. For instance, our SCB18 series delivers Tier 1 eco-design efficiency, significantly lowering long-term operational costs in large-scale solar projects and infrastructure.
When designing a turnkey distribution substation, a dry-type transformer must operate seamlessly with upstream and downstream high-voltage protection devices:
1. Upstream Protection: Learn more about selecting the right grid breakers in our technical guide on Key Components Inside a Switchgear Cabinet.
2. Photovoltaic & Renewable Integration: If you are engineering for clean energy plants, discover How to Adapt Prefabricated Switchgear to the High-Voltage Distribution Requirements of 10kv Photovoltaic Power Plants.
3. System Maintenance: Avoid costly downtime by reviewing our professional guide on Power Transformer Repair: How to Identify Repairable vs Non-Repairable Faults.
FAQ about SC(B) 13/14/18 Dry-Type Transformers
1. What is the main difference between SCB13, SCB14, and SCB18 dry transformers?
The primary difference lies in their energy efficiency levels and core loss reduction. Our SCB18 series meets Level 1 energy efficiency standards, reducing no-load losses by up to 20-25% compared to the SCB13, which translates to massive long-term operational savings for your project.
2. Can your resin-insulated dry transformers operate in 100% humidity?
Yes, absolutely. Because our copper/foil windings are completely encapsulated in vacuum-cast epoxy resin, the coils do not absorb moisture. You can safely deploy them in 100% relative humidity and harsh environments without any pre-drying or “tide treatment” after idle periods.
3. Why should I choose a cast resin transformer over an oil-immersed transformer?
Cast resin transformers offer superior fire and explosion safety (self-extinguishing glass fiber insulation), making them ideal for high-density indoor spaces like subways, hospitals, and commercial centers. Additionally, you eliminate oil leakage risks, rendering them virtually maintenance-free.
4. What cooling options are available for your power transformers?
We provide two operational modes: Natural Air Cooling (AN) for standard, continuous load operations, and Forced Air Cooling (AF). With our integrated AF cooling system, you can increase the short-term overload capacity of your transformer by up to 40-50% for peak safety.
5. Do you provide custom voltage combinations and tap ranges?
Yes, we design for your specific grid matrix. Our standard line supports high voltage ratings of 6.3kV, 10kV, 20kV, and 24kV with tap ranges of ±5% or ±2×2.5%, stepping down to a low voltage of 0.4kV with standard Dyn11 or Yyn0 connection groups.
Further information or a personal consultation? Our products and know-how are there to provide solutions.
ZBW-12/0.4(F.R) Outdoor pre-installed substation (European), is a high-voltage switchgear distribution transformer and low-voltage distribution device, according to a certain wiring scheme arranged into one of the factory prefabricated indoor and outdoor compact distribution equipment, that is, high-voltage power, transformer, low-voltage distribution and other functions organically combined together. Installed in a moisture-proof, rust-proof, dust-proof, rat-proof, fi re-proof, anti-theft, spacer, fully enclosed, movable steel structure or non-metal box, mechatronics fully closed operation;
