Medium voltage dry type transformer, IEC standard, China manufacturer

Understanding Medium Voltage Dry Type Transformers

Medium voltage dry type transformers are essential components in electrical distribution systems. They are designed to operate at voltage levels ranging from 1 kV to 36 kV. Unlike oil-filled transformers, dry type transformers use air or resin insulation, making them safer and more environmentally friendly. Their application spans various sectors, including commercial buildings, industrial facilities, and renewable energy installations. One of the key advantages of dry type transformers is their ability to operate in confined spaces without the risk of leakage or fire hazards associated with liquid insulation. This feature makes them ideal for urban environments and applications where safety is a primary concern. Additionally, they require less maintenance compared to traditional transformers, leading to cost savings over time.

Type	Rated capacity （KVA）	Voltage combination（KV）	No-load losses（W）	Load losses（W）	No-load current （%）	Short-circuit impedance （%）
SCH15-30	30	6,6.3,6.6,10,11/0.4	70	710	1.6	4.0
SCH15-50	50	6,6.3,6.6,10,11/0.4	90	1000	1.4	4.0
SCH15-80	80	6,6.3,6.6,10,11/0.4	120	1380	1.3	4.0
SCH15-100	100	6,6.3,6.6,10,11/0.4	130	1570	1.2	4.0
SCH15-125	125	6,6.3,6.6,10,11/0.4	150	1850	1.1	4.0
SC(B)H15-160	160	6,6.3,6.6,10,11/0.4	170	2130	1.1	4.0
SC(B)H15-200	200	6,6.3,6.6,10,11/0.4	200	2530	1.0	4.0
SC(B)H15-250	250	6,6.3,6.6,10,11/0.4	230	2760	1.0	4.0
SC(B)H15-315	315	6,6.3,6.6,10,11/0.4	280	3470	0.9	4.0
SC(B)H15-400	400	6,6.3,6.6,10,11/0.4	310	3990	0.8	4.0
SC(B)H15-500	500	6,6.3,6.6,10,11/0.4	360	4880	0.8	4.0
SC(B)H15-630	630	6,6.3,6.6,10,11/0.4	420	5880	0.7	4.0
SC(B)H15-630	630	6,6.3,6.6,10,11/0.4	410	5960	0.7	6.0
SC(B)H15-800	800	6,6.3,6.6,10,11/0.4	480	6960	0.7	6.0
SC(B)H15-1000	1000	6,6.3,6.6,10,11/0.4	550	8130	0.6	6.0
SC(B)H15-1250	1250	6,6.3,6.6,10,11/0.4	650	9690	0.6	6.0
SC(B)H15-1600	1600	6,6.3,6.6,10,11/0.4	780	11730	0.6	6.0
SC(B)H15-2000	2000	6,6.3,6.6,10,11/0.4	1000	14450	0.5	6.0
SC(B)H15-2500	2500	6,6.3,6.6,10,11/0.4	1200	17170	0.5	6.0

IEC Standards for Dry Type Transformers

The International Electrotechnical Commission (IEC) has established specific standards for dry type transformers to ensure safety, performance, and reliability. These standards cover various aspects, including temperature rise, dielectric properties, and short-circuit strength. Compliance with IEC standards is critical for manufacturers to guarantee quality and performance in their products. For instance, IEC 60076-11 outlines the requirements for dry type transformers, focusing on their design, testing, and operational guidelines. Adhering to these standards not only enhances the transformer’s longevity but also ensures that it meets international safety criteria. Manufacturers who comply with IEC standards can provide assurance to customers regarding the reliability and effectiveness of their products.

Choosing a Manufacturer in China

China is home to a vast number of manufacturers specializing in medium voltage dry type transformers. When selecting a manufacturer, it is crucial to consider their experience, certifications, and adherence to international standards like IEC. Reputable manufacturers often have extensive experience in the industry and can provide a range of customization options to meet specific project requirements.

Many Chinese manufacturers also invest heavily in modern production techniques and technologies, ensuring that their products are competitive in terms of quality and efficiency. Furthermore, potential buyers should look for manufacturers that offer robust after-sales support and warranty options, as these factors can significantly impact the overall value and reliability of the transformer installation.