English

Low Voltage Dry Transformer

Home> Products>Dry Type Transformer>Low Voltage Dry Transformer>SG Series Three Phase Low Voltage Dry Isolation Transformer Optional IP20 Protective Cabinet

SG Series Three Phase Low Voltage Dry Isolation Transformer Optional IP20 Protective Cabinet

SG Series Three Phase Low Voltage Dry Isolation Transformer Optional IP20 Protective Cabinet

SG Series Open Type Three Phase Low Voltage Dry Isolation Transformer is a classic open type low voltage dry transformer. It adopts vacuum varnish insulated winding without epoxy casting. Optional IP20 metal protective cabinet is available for dust prevention and touch safety. With strong anti interference capability stable voltage output and convenient inspection and maintenance. It is widely used for industrial power isolation voltage transformation and harmonic suppression, ideal supporting power equipment for automation medical precision machinery and exported complete production lines.

Inquire Now

Basic Info.

SG Series Open Type Three Phase Low Voltage Dry Isolation Transformer is low voltage class dry transformer with both primary and secondary voltage below 1kV. It uses high purity copper wire wound coils with vacuum impregnation insulation, fixed by blue metal clamping frame and tension bolts. Natural air cooling design enables easy visual inspection of winding status and simple maintenance. IP20 metal enclosure is an optional upgrade for onsite safety protection and dust resistance. Target Regions Mainly supplied to Europe Middle East Southeast Asia and Africa, widely matched with complete equipment export projects. Suitable for factories and system integrators who need local voltage conversion and power isolation.

Typical Applications

· Automation production lines CNC machine tools and robotic equipment power isolation

· Medical equipment laboratory and precision instrument anti interference power supply

· Industrial workshop voltage conversion for different standard voltage systems

· Complete machinery export supporting power transformation

· Data center auxiliary power and low voltage harmonic suppression

· Indoor factory and equipment room installation (IP20 cabinet recommended for site safety) Core Advantages

· Open varnished winding structure, no epoxy casting, easy inspection and maintenance

· High purity copper winding, low loss stable output and strong overload resistance

· Excellent isolation performance, effectively block interference and harmonic transmission

· Optional IP20 protective cabinet for dust proof and accidental touch protection

· Simple and robust mechanical structure, low vibration low noise and long service life

· Flexible voltage customization, adapt to various global low voltage standards

· Air natural cooling, safe operation without risk of oil leakage

Performance parameters for reference

Core Material	High permeability grain oriented silicon steel
Rated Capacity	3kVA ~ 2000kVA or customized
Rated Voltage	≤1kV common 400V 208V 230V 440V 660V
Frequency	50Hz / 60Hz
Vector Group	Dyn11, Yyn0
Insulation Class	F Class / H Class optional
Cooling Method	AN Air Natural Cooling, cooling fan optional for heavy load

Quality Assurance: Certifications, Testing, & Global Shipments

We strictly adhere to international manufacturing standards to guarantee that every unit delivered to your site meets precise performance thresholds.

International Certifications:

Our facility and products operate under ISO9001 Quality Management, ISO14001 Environmental Management, CE, and international IEEE/IEC standards.

100% Factory Routine & Type Testing:

Every unit undergoes rigorous routine testing before dispatch, including Partial Discharge (PD) measurement (≤5pC), Induced Overvoltage Withstand Test, Temperature Rise Testing, and Insulation Resistance verification.

Dispatch & Packaging Integrity:

Enclosures feature heavy-duty anti-corrosion outdoor coatings and oil-level protection locks, anchored inside reinforced shipping frames for ocean transit.

Second, the core advantages and characteristics of the product

Why Choose Us

stable isolation and voltage conversion solution for global industrial equipment and complete machine export projects, with optional IP20 protective cabinet for site safety.

· Open Varnished Winding Design: Adopts vacuum impregnated copper coil without epoxy encapsulation. Winding condition can be checked directly, simpler maintenance compared with cast resin dry transformers.

· Reliable Isolation & Anti interference: Effective electrical isolation reduces harmonic and surge interference, protecting precision CNC medical and automation equipment from grid disturbance.

·Optional IP20 Safety Cabinet: Metal protective enclosure can be equipped on request, preventing accidental contact and dust accumulation for safer indoor installation.

· Flexible Voltage Customization: Support various low voltage ratio matching for Europe Middle East and Africa different local grid requirements, fit complete machinery export.

·Solid Mechanical Structure: Reinforced blue clamping frame and tension bolts reduce vibration and noise, suitable for continuous long time operation in factory environment.

· Safe Oil Free Dry Type Design: No flammable insulating oil, higher safety for indoor workshop and equipment room installation.

·Strict Factory Test: Every unit passes full routine test before delivery, stable quality and low failure rate.

FAQ

Q1 What is SG open type low voltage dry isolation transformer？

A1 It is low voltage class dry transformer with both winding voltage under 1kV. It uses open vacuum varnish coil instead of epoxy casting, mainly used for power isolation and low voltage conversion. IP20 protective cabinet is optional.

Q2 What is the difference between SG model and SCB cast resin dry transformer？

A2 SG is low voltage open varnished type for isolation and voltage conversion, both sides ≤1kV. SCB is medium voltage epoxy cast transformer with 10kV or higher primary side, used for power grid distribution. They belong to two different product categories.

Q3 Can this SG transformer be fitted with protective cabinet？

A3 Yes. IP20 metal enclosure is available as optional upgrade for dust prevention and safety protection for site installation.

Q4 What voltage ratios are commonly available ？

A4 Common ratios include 400V to 400V, 400V to 208V, 400V to 230V, 440V and 660V. Custom voltage ratios are supported.

Q5 Is this transformer suitable for exporting complete machinery？

A5 Yes. It is widely matched with CNC automation and industrial equipment exported to Europe Middle East Southeast Asia and Africa.

Q6 What cooling method does it adopt？

A6 Standard is air natural cooling AN. Cooling fan can be added optionally for heavy duty working condition.

Q7 When to choose the IP20 cabinet version？

A7 IP20 cabinet is recommended for workshop public area, equipment room and occasions requiring protection against accidental touch and dust. Open type is more suitable for installation inside closed machine cabinet.

Leave your Message

* Upload the technical sheet of the transformer