Table of Contents
Understanding Step Down Transformers
| Type | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| SC12-30 | 30 | 6,6.3,6.6,10,11/0.4 | 150 | 710 | 2.0 | 4.0 |
| SC12-50 | 50 | 6,6.3,6.6,10,11/0.4 | 215 | 1000 | 2.0 | 4.0 |
| SC12-80 | 80 | 6,6.3,6.6,10,11/0.4 | 295 | 1380 | 1.5 | 4.0 |
| SC12-100 | 100 | 6,6.3,6.6,10,11/0.4 | 320 | 1570 | 1.5 | 4.0 |
| SC12-125 | 125 | 6,6.3,6.6,10,11/0.4 | 375 | 1850 | 1.3 | 4.0 |
| SCB12-160 | 160 | 6,6.3,6.6,10,11/0.4 | 430 | 2130 | 1.3 | 4.0 |
| SCB12-200 | 200 | 6,6.3,6.6,10,11/0.4 | 495 | 2530 | 1.1 | 4.0 |
| SCB12-250 | 250 | 6,6.3,6.6,10,11/0.4 | 575 | 2760 | 1.1 | 4.0 |
| SCB12-315 | 315 | 6,6.3,6.6,10,11/0.4 | 705 | 3470 | 1.0 | 4.0 |
| SCB12-400 | 400 | 6,6.3,6.6,10,11/0.4 | 785 | 3990 | 1.0 | 4.0 |
| SCB12-500 | 500 | 6,6.3,6.6,10,11/0.4 | 930 | 4880 | 1.0 | 4.0 |
| SCB12-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1070 | 5880 | 0.85 | 4.0 |
| SCB12-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1040 | 5960 | 0.85 | 6.0 |
| SCB12-800 | 800 | 6,6.3,6.6,10,11/0.4 | 1210 | 6960 | 0.85 | 6.0 |
| SCB12-1000 | 1000 | 6,6.3,6.6,10,11/0.4 | 1410 | 8130 | 0.85 | 6.0 |
| SCB12-1250 | 1250 | 6,6.3,6.6,10,11/0.4 | 1670 | 9690 | 0.85 | 6.0 |
| SCB12-1600 | 1600 | 6,6.3,6.6,10,11/0.4 | 1960 | 11700 | 0.85 | 6.0 |
| SCB12-2000 | 2000 | 6,6.3,6.6,10,11/0.4 | 2440 | 14400 | 0.7 | 6.0 |
| SCB12-2500 | 2500 | 6,6.3,6.6,10,11/0.4 | 2880 | 17100 | 0.7 | 6.0 |
Step down transformers are electrical devices designed to reduce voltage levels while increasing current. These transformers play an essential role in power distribution, allowing high voltage electricity to be converted into a lower voltage suitable for residential and commercial use. They operate based on the principle of electromagnetic induction, where the primary winding receives high voltage input, and the secondary winding outputs a lower voltage.

The design of step down transformers is crucial for ensuring efficiency and safety in electrical systems. In many cases, these transformers are utilized in conjunction with renewable energy sources, such as solar panels, to effectively manage power output. By using a step down transformer, users can optimize their energy consumption and reduce potential wastages, making them a valuable asset in modern energy management systems.
The 400 kVA Transformer
A 400 kVA transformer is a specific type of step down transformer that is capable of handling substantial power loads. This rating indicates its ability to manage 400 kilovolt-amperes, making it suitable for medium to large-scale operations. Industries such as manufacturing and construction often rely on 400 kVA transformers for their robust performance and reliability under demanding conditions.
What sets the 400 kVA transformer apart from smaller units is its capacity to deliver consistent power without significant loss. This efficiency is particularly advantageous for businesses looking to minimize operational costs associated with electricity. Furthermore, the transformer’s design allows for easy integration into existing electrical systems, providing flexibility for future upgrades or expansions.
High Cost Performance in Chinese Factories
| SC(B)10 | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| SC10-30 | 30 | 6,6.3,6.6,10,11/0.4 | 190 | 710 | 2.4 | 4.0 |
| SC10-50 | 50 | 6,6.3,6.6,10,11/0.4 | 270 | 1000 | 2.4 | 4.0 |
| SC10-80 | 80 | 6,6.3,6.6,10,11/0.4 | 370 | 1380 | 1.8 | 4.0 |
| SC10-100 | 100 | 6,6.3,6.6,10,11/0.4 | 400 | 1570 | 1.8 | 4.0 |
| SC10-125 | 125 | 6,6.3,6.6,10,11/0.4 | 470 | 1850 | 1.6 | 4.0 |
| SCB10-160 | 160 | 6,6.3,6.6,10,11/0.4 | 550 | 2130 | 1.6 | 4.0 |
| SCB10-200 | 200 | 6,6.3,6.6,10,11/0.4 | 630 | 2530 | 1.4 | 4.0 |
| SCB10-250 | 250 | 6,6.3,6.6,10,11/0.4 | 720 | 2760 | 1.4 | 4.0 |
| SCB10-315 | 315 | 6,6.3,6.6,10,11/0.4 | 880 | 3470 | 1.2 | 4.0 |
| SCB10-400 | 400 | 6,6.3,6.6,10,11/0.4 | 980 | 3990 | 1.2 | 4.0 |
| SCB10-500 | 500 | 6,6.3,6.6,10,11/0.4 | 1160 | 4880 | 1.2 | 4.0 |
| SCB10-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1350 | 5880 | 1.0 | 4.0 |
| SCB10-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1300 | 5960 | 1.0 | 6.0 |
| SCB10-800 | 800 | 6,6.3,6.6,10,11/0.4 | 1520 | 6960 | 1.0 | 6.0 |
| SCB10-1000 | 1000 | 6,6.3,6.6,10,11/0.4 | 1770 | 8130 | 1.0 | 6.0 |
| SCB10-1250 | 1250 | 6,6.3,6.6,10,11/0.4 | 2090 | 9690 | 1.0 | 6.0 |
| SCB10-1600 | 1600 | 6,6.3,6.6,10,11/0.4 | 2450 | 11730 | 1.0 | 6.0 |
| SCB10-2000 | 2000 | 6,6.3,6.6,10,11/0.4 | 3050 | 14450 | 0.8 | 6.0 |
| SCB10-2500 | 2500 | 6,6.3,6.6,10,11/0.4 | 3600 | 17170 | 0.8 | 6.0 |
Chinese factories specializing in transformers have gained a reputation for producing high-quality step down transformers at competitive prices. Manufacturers leverage advanced technology and efficient production processes to ensure that their products meet international standards while still being cost-effective. This combination of quality and affordability makes Chinese transformers appealing to both domestic and international buyers.

Investing in a transformer from a Chinese factory often results in significant savings without compromising on performance. Companies can benefit from reduced initial costs, as well as lower maintenance expenses due to the durability and reliability of these machines. Additionally, the high cost performance of these transformers enables businesses to allocate resources more effectively, ultimately contributing to their overall profitability in the competitive market.

