Types of Transformers: Dry Type vs. Oil Filled

Transformers are essential components in electrical systems, and they come in various types, each designed for specific applications. Among these, dry type transformers and oil filled transformers are the most commonly used.

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TypeRated capacity (KVA)Voltage combination(KV)No-load losses(W)Load losses(W)No-load current (%)Short-circuit impedance (%)
SC13-30306,6.3,6.6,10,11/0.41507102.34.0
SC13-50506,6.3,6.6,10,11/0.421510002.24.0
SC13-80806,6.3,6.6,10,11/0.429513801.74.0
SC13-1001006,6.3,6.6,10,11/0.432015701.74.0
SC13-1251256,6.3,6.6,10,11/0.437518501.54.0
SCB13-1601606,6.3,6.6,10,11/0.443021301.54.0
SCB13-2002006,6.3,6.6,10,11/0.449525301.34.0
SCB13-2502506,6.3,6.6,10,11/0.457527601.34.0
SCB13-3153156,6.3,6.6,10,11/0.470534701.14.0
SCB13-4004006,6.3,6.6,10,11/0.478539901.14.0
SCB13-5005006,6.3,6.6,10,11/0.493048801.14.0
SCB13-6306306,6.3,6.6,10,11/0.4107058800.94.0
SCB13-6306306,6.3,6.6,10,11/0.4104059600.96.0
SCB13-8008006,6.3,6.6,10,11/0.4121069600.96.0
SCB13-100010006,6.3,6.6,10,11/0.4141081300.96.0
SCB13-125012506,6.3,6.6,10,11/0.4167096900.96.0
SCB13-160016006,6.3,6.6,10,11/0.41960117000.96.0
SCB13-200020006,6.3,6.6,10,11/0.42440144000.76.0
SCB13-250025006,6.3,6.6,10,11/0.42880171000.76.0

Dry type transformers utilize air for cooling and insulation, making them ideal for indoor installations where safety and environmental conditions are a concern. They are often employed in commercial buildings and industrial applications due to their low maintenance requirements and enhanced safety features.

On the other hand, oil filled transformers use oil as a cooling and insulating medium. This design allows for higher power ratings and is typically used in outdoor applications. The oil helps dissipate heat efficiently, which is crucial in high-load situations. However, they require more maintenance and careful monitoring to prevent leaks or environmental contamination.

Ground Mounted Transformers

Ground mounted transformers are designed for outdoor use, typically installed directly on the ground or on a concrete pad. These transformers are essential in distributing electricity from transmission lines to various substations and facilities.

One of the major advantages of ground mounted transformers is their space efficiency. Since they are placed on the ground, they can be installed in areas where overhead power lines would not be practical. This makes them a popular choice in urban environments where space is limited.

Additionally, ground mounted transformers are often easier to access for maintenance purposes. Technicians can perform routine checks and repairs without the need for extensive scaffolding or aerial work platforms, reducing downtime and ensuring continuous operation.

Choosing a Reliable Transformer Manufacturer in China

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When it comes to sourcing transformers, China has become a well-known hub for manufacturing high-quality electrical equipment. Many manufacturers in China specialize in producing both dry type and oil filled transformers, catering to a wide range of industries.

A famous Chinese manufacturer may offer an array of products designed to meet international standards. These companies often invest in advanced technology and quality control processes to ensure their transformers perform effectively and safely. Videos showcasing their manufacturing processes and product testing can provide potential buyers with confidence in their quality.

TypeRated capacity (KVA)Voltage combination(KV)No-load losses(W)Load losses(W)No-load current (%)Short-circuit impedance (%)
SZ11-2000200033,35/6.3,6.6,10.5,112300192400.806.5
SZ11-2500250033,35/6.3,6.6,10.5,112720206400.806.5
SZ11-3150315033,35/6.3,6.6,10.5,113230247100.727.0
SZ11-4000400033,35/6.3,6.6,10.5,113870291600.727.0
SZ11-5000500033,35/6.3,6.6,10.5,114640342000.687.0
SZ11-6300630033,35/6.3,6.6,10.5,115630368000.687.5
SZ11-8000800033,35/6.3,6.6,10.5,117870406000.607.5
SZ11-100001000033,35/6.3,6.6,10.5,119280481000.607.5
SZ11-125001250033,35/6.3,6.6,10.5,1110940569000.568.0
SZ11-160001600033,35/6.3,6.6,10.5,1113170703000.548.0
SZ11-200002000033,35/6.3,6.6,10.5,1115570828000.548.0

Finding a reputable manufacturer is critical, as it directly impacts the reliability and performance of the transformer. Prospective buyers should look for certifications, customer reviews, and detailed product specifications when considering a supplier.