What are the technical specifications of SC(B) Series Marine Transformer?

Jan 02, 2026

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Hey there! As a supplier of SC(B) Series Marine Transformers, I'm super excited to give you the lowdown on their technical specs. These transformers are pretty awesome, and I'm gonna break down all the details for you.

1. General Overview

SC(B) Series Marine Transformers are designed to meet the specific needs of the marine environment. They are used in various marine applications, from small vessels to large commercial ships. These transformers are built tough to withstand the harsh conditions at sea, including humidity, salt - air corrosion, and vibrations.

2. Power Rating

The power rating of SC(B) Series Marine Transformers can vary widely. We typically offer models with power ratings ranging from a few kilovolt - amperes (kVA) to several hundred kVA. For smaller boats or auxiliary systems on larger vessels, lower - power transformers in the 5 - 50 kVA range might be sufficient. On the other hand, for main power distribution on big commercial or military ships, we have transformers with ratings up to 500 kVA or even more. This wide range of power ratings allows us to provide the right solution for different marine applications.

3. Voltage Levels

In terms of voltage, these transformers can handle different input and output voltage combinations. The input voltage usually comes from the ship's main power source, which could be a generator. Common input voltages for our SC(B) Series Marine Transformers are in the medium - voltage range, such as 3.3 kV, 6.6 kV, or 11 kV.

As for the output voltage, it's tailored to the needs of the equipment on the ship. For many general - purpose electrical systems on board, the output voltage might be 400 V or 440 V, which is suitable for powering motors, lighting, and other common electrical devices. For some specialized equipment, we can also provide custom - output voltage levels to ensure seamless integration.

4. Insulation Class

The insulation class of a transformer is crucial as it determines its ability to handle heat. Our SC(B) Series Marine Transformers typically have an insulation class of F or H.

An insulation class F transformer can withstand a maximum temperature of around 155°C. This is quite good as it allows the transformer to operate reliably even when there's a certain amount of heat generated during normal operation.

On the other hand, insulation class H transformers can handle even higher temperatures, up to about 180°C. This higher - temperature tolerance makes them ideal for more demanding applications where the ambient temperature on the ship might be relatively high, or where the transformer is expected to operate at a high load for extended periods.

5. Cooling Method

These transformers use an air - cooled method, which is not only effective but also suitable for the marine environment. Air - cooling has several advantages. First of all, it's relatively simple and reliable. There are no complex cooling liquids or systems that could potentially leak or malfunction.

The air - cooled design also allows for better ventilation. In the marine setting, where space can be limited, the transformers can be easily installed in areas with proper air circulation. The fans used in the air - cooling system are designed to be robust and able to withstand the vibrations and shocks common on ships.

If you're interested in more details about air - cooled marine transformers, you can check out our Marine Air - cooled Resin Cast Rectifier Transformer page.

6. Resin Cast Design

One of the key features of the SC(B) Series Marine Transformers is their resin cast design. The windings of the transformer are encapsulated in a special resin. This resin provides excellent electrical insulation and protection against moisture and dust.

In the marine environment, where humidity is high, the resin cast design helps to prevent corrosion of the windings. It also makes the transformer more resistant to mechanical stress, such as vibrations and shocks. This is especially important as ships are constantly in motion and can experience rough seas.

Resin Cast Transformer For OffshoreMarine Air-cooled Resin Cast Rectifier Transformer

For those looking for resin - cast transformers for offshore applications, you can visit our Resin Cast Transformer for Offshore page.

7. Short - Circuit Resistance

Marine transformers need to be able to withstand short - circuits. Our SC(B) Series Marine Transformers are designed with high short - circuit resistance. This means that in the event of a short - circuit in the electrical system on the ship, the transformer can maintain its integrity and continue to function safely after the short - circuit is cleared.

The short - circuit resistance is achieved through careful design of the windings and the overall structure of the transformer. We use high - quality materials and advanced manufacturing techniques to ensure that the transformer can handle short - circuit currents without being damaged.

8. Protective Enclosure

The transformers come with a protective enclosure that is specifically designed for the marine environment. The enclosure is made of corrosion - resistant materials, such as stainless steel or coated steel. It provides physical protection to the transformer against impacts, as well as environmental protection against salt - air, water splashes, and dust.

The enclosure is also designed to meet certain IP (Ingress Protection) ratings. For example, many of our transformers have an IP rating of at least IP23, which means they are protected against solid objects larger than 12.5 mm (such as fingers) and water spray from any angle up to 60° from the vertical. Higher - end models can have even higher IP ratings, up to IP54 or more, providing a greater level of protection.

9. Medium - Voltage Capabilities

As mentioned earlier, our SC(B) Series includes medium - voltage models. These medium - voltage marine transformers are used for power distribution on larger ships. They are designed to handle the medium - voltage levels safely and efficiently.

The design of the medium - voltage transformers takes into account factors such as electrical insulation, voltage regulation, and fault protection. If you're interested in medium - voltage marine transformers, you can head over to our Medium Voltage Marine Transformer page.

Let's Talk

If you're in the market for a high - quality SC(B) Series Marine Transformer, I'd love to chat with you. Whether you need help determining the right power rating, voltage levels, or other technical specifications for your specific marine application, I'm here to assist. Don't hesitate to reach out for a quote or to discuss your requirements further. We're committed to providing the best transformers and excellent customer service.

References

  • Electrical Engineering textbooks on power transformers.
  • Industry standards for marine transformers.