Table of Contents
Understanding Step Down Transformers

Step down transformers play a crucial role in electrical systems, particularly in reducing voltage levels for various applications. These devices are designed to decrease the incoming voltage from a high level to a lower level, making them essential for safely powering residential and commercial equipment. The primary winding of a step down transformer receives high voltage input, while the secondary winding delivers a reduced voltage output.
| Type | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| S11-630 | 630 | 33,35/6.3,6.6,10.5,11 | 830 | 7870 | 1.10 | 6.5 |
| S11-800 | 800 | 33,35/6.3,6.6,10.5,11 | 980 | 9410 | 1.00 | 6.5 |
| S11-1000 | 1000 | 33,35/6.3,6.6,10.5,11 | 1150 | 11540 | 1.00 | 6.5 |
| S11-1250 | 1250 | 33,35/6.3,6.6,10.5,11 | 1410 | 13940 | 0.90 | 6.5 |
| S11-1600 | 1600 | 33,35/6.3,6.6,10.5,11 | 1700 | 16670 | 0.80 | 6.5 |
| S11-2000 | 2000 | 33,35/6.3,6.6,10.5,11 | 2180 | 18380 | 0.70 | 6.5 |
| S11-2500 | 2500 | 33,35/6.3,6.6,10.5,11 | 2560 | 19670 | 0.60 | 6.5 |
| S11-3150 | 3150 | 33,35/6.3,6.6,10.5,11 | 3040 | 23090 | 0.56 | 7.0 |
| S11-4000 | 4000 | 33,35/6.3,6.6,10.5,11 | 3620 | 27360 | 0.56 | 7.0 |
| S11-5000 | 5000 | 33,35/6.3,6.6,10.5,11 | 4320 | 31380 | 0.48 | 7.0 |
| S11-6300 | 6300 | 33,35/6.3,6.6,10.5,11 | 5250 | 35060 | 0.48 | 7.5 |
| S11-8000 | 8000 | 33,35/6.3,6.6,10.5,11 | 7200 | 38500 | 0.42 | 7.5 |
| S11-10000 | 10000 | 33,35/6.3,6.6,10.5,11 | 8700 | 45300 | 0.42 | 7.5 |
| S11-12500 | 12500 | 33,35/6.3,6.6,10.5,11 | 10080 | 53900 | 0.40 | 8.0 |
| S11-16000 | 16000 | 33,35/6.3,6.6,10.5,11 | 12160 | 65800 | 0.40 | 8.0 |
| S11-20000 | 20000 | 33,35/6.3,6.6,10.5,11 | 14400 | 79500 | 0.40 | 8.0 |
| S11-25000 | 25000 | 33,35/6.3,6.6,10.5,11 | 17020 | 94100 | 0.32 | 8.0 |
| S11-31500 | 31500 | 33,35/6.3,6.6,10.5,11 | 20220 | 112900 | 0.32 | 8.0 |
The operation of a step down transformer is based on the principle of electromagnetic induction. When an alternating current flows through the primary coil, it generates a magnetic field that induces a current in the secondary coil. This process allows for efficient energy transfer while maintaining the desired voltage levels. Understanding this technology is vital for industries that rely on consistent and safe electrical power.
200 kVA Transformer Specifications
The 200 kVA transformer is a popular choice for medium-scale industrial applications. Its capacity allows it to handle significant loads, making it suitable for factories, large office buildings, and other facilities where consistent power supply is essential. This type of transformer often features robust construction and advanced cooling systems to manage heat dissipation effectively.
When considering a 200 kVA transformer, it’s essential to evaluate factors such as efficiency, durability, and maintenance requirements. Many suppliers offer models that are designed to minimize energy losses, ensuring that users can benefit from cost-effective operation over time. Additionally, modern designs often incorporate safety features to protect against overloads and short circuits, enhancing the reliability of the power supply.
Choosing a Cost-Effective China Supplier
China has emerged as a leading supplier of electrical equipment, including step down transformers. Many manufacturers in the region offer competitive pricing without compromising on quality. By sourcing a transformer directly from a Chinese supplier, businesses can significantly reduce their capital expenditures while still obtaining reliable equipment for their operations.
When selecting a supplier, it’s important to consider their reputation and customer service. Look for companies that have a proven track record of delivering high-quality products and support. Reading reviews and testimonials can provide valuable insights into the experiences of other customers. Additionally, ensure that the supplier offers comprehensive warranties and after-sales services to address any potential issues that may arise during operation.

