What is SG LowVoltage DryType Transformer？

Anyone who's bought imported equipment knows the problem: the nameplate says "220V," but your workshop only has "380V." Voltage mismatch means the equipment can't run.

The SG threephase lowvoltage drytype transformer is built to solve exactly that problem.

It's a threephase drytype isolation transformer. Feed it 380V input, and it can give you 220V, 200V, 110V, 36V — whatever voltage you need, it can deliver. At the same time, it completely isolates the input from the output — so grid noise, harmonics, and surges stop right there.

In plain language: it converts the voltage to what you need and keeps the interference out.

Where Does SG LowVoltage DryType Transformer Fit?

The SG series works in pretty much any lowvoltage threephase application that needs voltage conversion and electrical isolation.

Imported equipment – Your local grid voltage doesn't match what the machine needs? The SG converts it. 380V to 220V and 380V to 200V are the most common requests.

Machine tools and automation – CNC machines, machining centres, and all kinds of industrial equipment. One transformer handles both control and power circuits — simpler wiring, fewer parts.

Lighting and indicators – Local lighting in workshops, machine indicator lights.

Rectifier power supplies – Frontend power for electroplating, electrolysis, and DC drive equipment.

Critical facilities – Power plants, data centres, medical equipment, communication systems — anywhere power quality really matters.

Highrise buildings and public spaces – Office buildings, shopping centres, museums — indoor locations with strict fire safety requirements.

In short: wherever you need to change voltage or keep interference out of a lowvoltage threephase system, the SG fits.

What Makes SG LowVoltage DryType Transformer Different?

Drytype construction, no oil. No leaks, no fire risk. You can install it indoors, in a cabinet, right next to the equipment — without worrying about oil spills.

Isolation design. Primary and secondary windings are completely separate. Grid noise, harmonics, and surges stop at the transformer — they don't reach your equipment. Control circuits stay clean, equipment stays stable.

Pure copper windings, Class H insulation. Good conductivity, low heat generation, rated for 180°C. Runs all day without overheating.

Highpermeability silicon steel core. Low losses, low noise, high efficiency. Quiet enough that you barely notice it's there.

Customisable. Input/output voltage, connection group, tap positions, enclosure — all can be built to your requirements. Coils can be epoxycast for extra protection against moisture, oil, and water.

Protection ratings available. From IP00 (open) to IP23 (dripproof) — choose what fits your environment.

How to Pick the Right SG LowVoltage DryType Transformer

Three things matter most: capacity, voltage, and installation environment.

Capacity – Add up the total power of everything you're connecting, then leave about 30% margin. Motors and compressors draw high startup current — size generously. SG capacities range from a few hundred VA to several thousand kVA.

Voltage – Input voltage depends on your site supply: 380V, 400V, 415V, 660V, 690V — all available. Output voltage depends on what your equipment needs: 220V, 200V, 110V, 36V — you name it, we can build it.

Installation environment – Indoor installation, good ventilation. Ambient temperature -5°C to +40°C, altitude not exceeding 2000m. No corrosive gases, no heavy dust, no severe vibration.

Enclosure or not? If it's going inside a cabinet, no enclosure needed (IP00). If it's freestanding, add an enclosure (IP20 or higher).

Final Thoughts

The SG lowvoltage drytype transformer isn't flashy. It doesn't connect to WiFi, doesn't have a touchscreen, doesn't make headlines.

What it does is straightforward: it gets the voltage right and keeps the interference out.

But for factories, workshops, and laboratories that have been wrestling with voltage mismatches and equipment glitches, the difference is immediate. Equipment starts working. Interference disappears. Production doesn't stop.It's not the star of the show. It's the stage that makes the show possible.