SG 3 Phase Dry-Type Isolation Transformer

SG 3 Phase Dry-Type Isolation Transformer

Beyond its core voltage conversion capability, this transformer excels at isolating the power grid's third harmonic. This key feature helps extend the operational lifespan of connected equipment. It is widely applicable to various imported devices and diverse voltage transformation needs (such as 380V to 220V, 380V to other voltages, and 220V to other voltages), with available capacities spanning

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Parameter information

Basic parameters	Product Name	Three - phase dry - type transformer
	Product Phase	Three - phase
	Input Voltage	660V, 400V, 380V, 220V (customizable voltage)
	Output Voltage	380V, 220V, 200V, 110V; 1140V, 690V, 660V, 440V, 415V, 400V (customizable voltage)
Technical parameters	Voltage Accuracy	±1%
	Voltage Fluctuation Rate	≤1.5%
	Waveform Distortion	No distortion
	Insulation Class	Class F, resistant to high temperature up to 150℃
	Insulation Resistance	≥150MΩ
	Working Efficiency	Inductive type (autotransformer type) ≥99%
	Dielectric Strength	3000VAC/1min
	Overload Capacity	Can operate at over 1.2 times the rated load
	Cooling Method	Dry - type air cooling
	Connection Method	Y/YynO, D,y11, D,d0 optional
	Safety Standards	Complies with ISO9001, CE, GB226 and other regular certifications
	Stock Status	Standard models with 380V, 220V, 200V, and 10 - 1000KVA all in stock; all specifications produced according to standards

Advantages of SG Three - phase Dry - type Isolation Transformers

1. High - quality Voltage Regulation

The SG three - phase dry - type isolation transformer offers excellent voltage regulation capabilities. It can maintain the output voltage within a very narrow range, with a voltage accuracy of ±1% and a voltage fluctuation rate of ≤1.5%. This ensures stable power supply for electrical equipment, preventing damage caused by voltage fluctuations, and is particularly suitable for applications that require precise voltage control, such as precision machinery and electronic devices.

2. Excellent Insulation Performance

With an insulation class of F, it can withstand high temperatures up to 150℃. The insulation resistance is ≥150MΩ, which provides reliable electrical insulation. This high - level insulation not only enhances the safety of the transformer during operation but also extends its service life by reducing the risk of electrical breakdowns and short - circuits.

Application Scope of SG Three-Phase Dry-Type Isolation Transformer

Suitable for power supply systems in industrial and mining enterprises, shopping malls, high-rise buildings, residential quarters, and other places that require electrical isolation and voltage conversion.
Applicable to occasions with strict requirements on fire safety and environmental protection, such as hospitals, schools, data centers, and clean workshops, due to its dry-type structure (no flammable insulating oil).
Used in equipment or production lines that are sensitive to power quality, such as precision machine tools, electronic instruments, communication equipment, and variable frequency drives (VFDs), to reduce voltage fluctuations, harmonics, and electromagnetic interference.
Suitable for power grids with unstable voltage or harsh working environments (e.g., high temperature, high humidity, or dusty conditions) where reliable isolation and stable power supply are needed.
Applied in renewable energy systems (such as solar photovoltaic and wind power) to isolate the inverter side from the grid side and ensure safe and efficient power transmission.