Table of Contents
Understanding Electrical Transformers

| Type | Rated capacity (KVA) | No-load losses(W) | Voltage combination (KV) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| S11-M-30 | 30 | 100 | 6,6.3,10,10.5,11/0.4 | 600 | 2.3 | 4.0 |
| S11-M-50 | 50 | 130 | 6,6.3,10,10.5,11/0.4 | 870 | 2.0 | 4.0 |
| S11-M-63 | 63 | 150 | 6,6.3,10,10.5,11/0.4 | 1040 | 1.9 | 4.0 |
| S11-M-80 | 80 | 180 | 6,6.3,10,10.5,11/0.4 | 1250 | 1.9 | 4.0 |
| S11-M-100 | 100 | 200 | 6,6.3,10,10.5,11/0.4 | 1500 | 1.8 | 4.0 |
| S11-M-125 | 125 | 240 | 6,6.3,10,10.5,11/0.4 | 1800 | 1.7 | 4.0 |
| S11-M-160 | 160 | 280 | 6,6.3,10,10.5,11/0.4 | 2200 | 1.6 | 4.0 |
| S11-M-200 | 200 | 340 | 6,6.3,10,10.5,11/0.4 | 2600 | 1.5 | 4.0 |
| S11-M-250 | 250 | 400 | 6,6.3,10,10.5,11/0.4 | 3050 | 1.4 | 4.0 |
| S11-M-315 | 315 | 480 | 6,6.3,10,10.5,11/0.4 | 3650 | 1.4 | 4.0 |
| S11-M-400 | 400 | 570 | 6,6.3,10,10.5,11/0.4 | 4300 | 1.3 | 4.0 |
| S11-M-500 | 500 | 680 | 6,6.3,10,10.5,11/0.4 | 5100 | 1.2 | 4.0 |
| S11-M-630 | 630 | 810 | 6,6.3,10,10.5,11/0.4 | 6200 | 1.1 | 4.5 |
| S11-M-800 | 800 | 980 | 6,6.3,10,10.5,11/0.4 | 7500 | 1.0 | 4.5 |
| S11-M-1000 | 1000 | 1150 | 6,6.3,10,10.5,11/0.4 | 10300 | 1.0 | 4.5 |
| S11-M-1250 | 1250 | 1360 | 6,6.3,10,10.5,11/0.4 | 12800 | 0.9 | 4.5 |
| S11-M-1600 | 1600 | 1640 | 6,6.3,10,10.5,11/0.4 | 14500 | 0.8 | 4.5 |
| S11-M-2000 | 2000 | 2280 | 6,6.3,10,10.5,11/0.4 | 17820 | 0.6 | 5.0 |
| S11-M-2500 | 2500 | 2700 | 6,6.3,10,10.5,11/0.4 | 20700 | 0.6 | 5.0 |
| S11-M-30- | 30 | 90 | 20,22/0.4 | 660 | 2.1 | 5.5 |
| S11-M-50- | 50 | 130 | 20,22/0.4 | 960 | 2 | 5.5 |
| S11-M-63- | 63 | 150 | 20,22/0.4 | 1145 | 1.9 | 5.5 |
| S11-M-80- | 80 | 180 | 20,22/0.4 | 1370 | 1.8 | 5.5 |
| S11-M-100- | 100 | 200 | 20,22/0.4 | 1650 | 1.6 | 5.5 |
| S11-M-125- | 125 | 240 | 20,22/0.4 | 1980 | 1.5 | 5.5 |
| S11-M-160- | 160 | 290 | 20,22/0.4 | 2420 | 1.4 | 5.5 |
| S11-M-200- | 200 | 330 | 20,22/0.4 | 2860 | 1.3 | 5.5 |
| S11-M-250- | 250 | 400 | 20,22/0.4 | 3350 | 1.2 | 5.5 |
| S11-M-315- | 315 | 480 | 20,22/0.4 | 4010 | 1.1 | 5.5 |
| S11-M-400- | 400 | 570 | 20,22/0.4 | 4730 | 1 | 5.5 |
| S11-M-500 | 500 | 680 | 20,22/0.4 | 5660 | 1 | 5.5 |
| S11-M-630 | 630 | 810 | 20,22/0.4 | 6820 | 0.9 | 6 |
| S11-M-800 | 800 | 980 | 20,22/0.4 | 8250 | 1.8 | 6 |
| S11-M-1000 | 1000 | 1150 | 20,22/0.4 | 11330 | 0.7 | 6 |
| S11-M-1250 | 1250 | 1350 | 20,22/0.4 | 13200 | 0.7 | 6 |
| S11-M-1600 | 1600 | 1630 | 20,22/0.4 | 15950 | 0.6 | 6 |
Electrical transformers are crucial devices in power distribution systems, designed to transfer electrical energy between two or more circuits through electromagnetic induction. They play a vital role in adjusting voltage levels to ensure the efficient transmission of electricity over long distances. By stepping up or stepping down voltage, transformers minimize energy loss and enhance the reliability of electrical supply.
Transformers come in various sizes and capacities, with the 31500 kVA transformer being one of the most significant in industrial applications. This type of transformer is typically used in large-scale operations such as manufacturing plants, mining, and other heavy industries where substantial amounts of energy are required. Its robust design and high efficiency make it an ideal choice for demanding environments.
High-Quality Transformers from China Suppliers
When it comes to sourcing high-quality electrical transformers, China has established itself as a leading supplier in the global market. Many Chinese manufacturers adhere to international standards, ensuring that their products meet rigorous quality controls and performance specifications. These suppliers often invest in advanced technology and materials to produce durable and efficient transformers.
One of the benefits of purchasing from Chinese suppliers is the competitive pricing without compromising on quality. Many companies offer a range of transformers, including the 31500 kVA model, tailored to meet specific customer needs. In addition, working with reputable suppliers can provide access to comprehensive after-sales support, which is essential for maintaining the longevity and performance of the transformer.
Key Features of 31500 kVA Transformers
| Type | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| SC13-30 | 30 | 6,6.3,6.6,10,11/0.4 | 150 | 710 | 2.3 | 4.0 |
| SC13-50 | 50 | 6,6.3,6.6,10,11/0.4 | 215 | 1000 | 2.2 | 4.0 |
| SC13-80 | 80 | 6,6.3,6.6,10,11/0.4 | 295 | 1380 | 1.7 | 4.0 |
| SC13-100 | 100 | 6,6.3,6.6,10,11/0.4 | 320 | 1570 | 1.7 | 4.0 |
| SC13-125 | 125 | 6,6.3,6.6,10,11/0.4 | 375 | 1850 | 1.5 | 4.0 |
| SCB13-160 | 160 | 6,6.3,6.6,10,11/0.4 | 430 | 2130 | 1.5 | 4.0 |
| SCB13-200 | 200 | 6,6.3,6.6,10,11/0.4 | 495 | 2530 | 1.3 | 4.0 |
| SCB13-250 | 250 | 6,6.3,6.6,10,11/0.4 | 575 | 2760 | 1.3 | 4.0 |
| SCB13-315 | 315 | 6,6.3,6.6,10,11/0.4 | 705 | 3470 | 1.1 | 4.0 |
| SCB13-400 | 400 | 6,6.3,6.6,10,11/0.4 | 785 | 3990 | 1.1 | 4.0 |
| SCB13-500 | 500 | 6,6.3,6.6,10,11/0.4 | 930 | 4880 | 1.1 | 4.0 |
| SCB13-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1070 | 5880 | 0.9 | 4.0 |
| SCB13-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1040 | 5960 | 0.9 | 6.0 |
| SCB13-800 | 800 | 6,6.3,6.6,10,11/0.4 | 1210 | 6960 | 0.9 | 6.0 |
| SCB13-1000 | 1000 | 6,6.3,6.6,10,11/0.4 | 1410 | 8130 | 0.9 | 6.0 |
| SCB13-1250 | 1250 | 6,6.3,6.6,10,11/0.4 | 1670 | 9690 | 0.9 | 6.0 |
| SCB13-1600 | 1600 | 6,6.3,6.6,10,11/0.4 | 1960 | 11700 | 0.9 | 6.0 |
| SCB13-2000 | 2000 | 6,6.3,6.6,10,11/0.4 | 2440 | 14400 | 0.7 | 6.0 |
| SCB13-2500 | 2500 | 6,6.3,6.6,10,11/0.4 | 2880 | 17100 | 0.7 | 6.0 |
The 31500 kVA transformer is engineered to handle high load capacities, making it suitable for various applications in industrial settings. These transformers are typically equipped with features such as oil-immersed cooling systems, which help to regulate operating temperatures and improve efficiency. The robust construction ensures that they can withstand harsh environmental conditions while delivering reliable power.

Moreover, the advanced technology used in the manufacturing of these transformers allows for enhanced safety features. This includes protection against overloads and short circuits, which are crucial for preventing damage and ensuring continuous operation. Investing in a high-quality 31500 kVA transformer from a reputable supplier ensures that businesses can maintain optimal performance and reliability in their energy systems, even when facing unexpected challenges.

