Table of Contents
Overview of 3 Phase Dry Type Transformers
3 phase dry type transformers are essential components in electrical systems, designed to transform voltage levels between circuits. Unlike oil-filled transformers, these units are insulated with air or resin, which allows for efficient heat dissipation and eliminates the risk of oil leaks. This makes them suitable for indoor installations and environments where safety is a primary concern.
These transformers are commonly used in commercial and industrial applications, providing reliable power distribution for various equipment. Their robust construction and maintenance-free operation contribute to their long lifespan, making them an ideal choice for facilities that require a dependable power source.
| 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 |
Enclosure Ratings: IP 20, 21, 23, 30, 31
The enclosure protection ratings of 3 phase dry type transformers, such as IP 20, 21, 23, 30, and 31, indicate their ability to withstand environmental factors. An IP (Ingress Protection) rating consists of two digits; the first digit represents solid particle protection while the second indicates moisture protection. For instance, an IP 20 rating means that the transformer is protected against solid objects larger than 12.5mm but has no protection against water.
Higher IP ratings, like IP 30 and 31, provide increased protection against dust and moisture, making these transformers suitable for harsher environments. Understanding these ratings is crucial for selecting the right transformer for specific applications, ensuring optimal performance and longevity.
Choosing a Manufacturer
Selecting a reputable manufacturer for 3 phase dry type transformers is critical to ensure quality and reliability. Leading manufacturers typically adhere to international standards and have certifications that guarantee their products meet safety and performance benchmarks. It’s important to review the company’s experience, customer feedback, and technical support capabilities.
Additionally, many manufacturers offer customization options to cater to specific project requirements, including varying enclosure types and configurations. Evaluating these aspects will help in choosing a manufacturer who can provide not only high-quality products but also excellent after-sales support, enhancing the overall investment.
