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Single-Phase and Three phase Isolation Transformer

4900.00 - 5500.00 USD ($)

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Product Details:

High Voltage Up to 33 kV
Load Loss Low, as per IS/IEC standards
Cooling Type Air cooled / Oil cooled
Operating Temperature -25C to +55C
Rated Voltage 110V/220V/415V or as specified
Coil Material Electrolytic Grade Copper
Dimension (L*W*H) As per model/capacity (customized)
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Single-Phase and Three phase Isolation Transformer Price And Quantity

Price Range 4900.00 - 5500.00 USD ($)
Minimum Order Quantity 1 Unit

Insulation Resistance > 1000 M
Winding Technique Double wound with insulation barrier
Mounting Type Floor / Pad / Wall Mounted
Noise Level <= 55 dB at 1 meter distance
No-Load Loss 1.5% of rated power
Tap Changer Optional, Off-circuit or On-load
Color RAL 7035 / Custom
Cooling Method Natural Air / Forced Air / Oil Immersed
Humidity Tolerance 95% RH (non-condensing)
Enclosure Type IP21 / IP23 / IP54 available
Short Circuit Withstand Duration Up to 3 seconds
Applicable Standards IS 2026, IEC 60076, CE Certified
Insulation Class Class F / H
Dielectric Strength 2.5kV to 5kV for 1 minute

Single-Phase and Three phase Isolation Transformer Product Specifications

Phase Single-Phase / Three-Phase
Coil Number 2 (Primary and Secondary)
Coil Material Electrolytic Grade Copper
Load Loss Low, as per IS/IEC standards
Usage Electrical isolation, noise reduction, and protection in sensitive equipment
Cooling Type Air cooled / Oil cooled
Coil Structure Toroidal / Wound core
Frequency (MHz) 50/60 Hz
Output As per rated output voltage
Dimension (L*W*H) As per model/capacity (customized)
High Voltage Up to 33 kV
Material Copper windings, CRGO laminated silicon steel core
Product Type Isolation Transformer
Efficiency 95% - 98%
Rated Voltage 110V/220V/415V or as specified
Weight Varies with capacity (Approx. 25kg - 1200kg)
Power Scope 1 kVA - 500 kVA
Low Voltage 110V/220V/415V
Capacity 1 kVA to 500 kVA
Operating Temperature -25C to +55C

Insulation Resistance > 1000 M
Winding Technique Double wound with insulation barrier
Mounting Type Floor / Pad / Wall Mounted
Noise Level <= 55 dB at 1 meter distance
No-Load Loss 1.5% of rated power
Tap Changer Optional, Off-circuit or On-load
Color RAL 7035 / Custom
Cooling Method Natural Air / Forced Air / Oil Immersed
Humidity Tolerance 95% RH (non-condensing)
Enclosure Type IP21 / IP23 / IP54 available
Short Circuit Withstand Duration Up to 3 seconds
Applicable Standards IS 2026, IEC 60076, CE Certified
Insulation Class Class F / H
Dielectric Strength 2.5kV to 5kV for 1 minute

Single-Phase and Three phase Isolation Transformer Trade Information

Supply Ability 6000 Unit Per Month
Delivery Time 7 Days

Product Description

Single-Phase and Three phase Isolation Transformer
We're MANUFACTURER and specialize in electrical field for several years,also export products with good quality and right price in China. We can customize according to your requirements
SANDI tarnsformer accept all kinds of input and output voltage, and all kinds of power capacities.
Dry-type,Isolation,Control,Power,CE certification
DG and SG series single - phase and three - phase dry type transformer adopts high quality material and advanced technology , it has advantages of damp - proof and convenient maintenance, it can be applied to such power transmission and distribution places like underground railway , high building, airport, station, wharf, enterprise, tunnel, etc. It is mainly used in power supply occasions of AC 50 60Hz and voltage less than 500V. All the input and output voltage , connection group and capacity of tapped winding can be designed and produced according to users requirements.
Working conditions

Ambient temperature: -15 C +40 C
Altitude: <1000m
Relative humidity: <90%
Environment exists without gas, steam, chemical deposition, dust or dirt that will affect transformers insulation seriously, also explosive or corrosive medium is not allowed
If any special working conditions that are not in line with the above stipulations, user shall negotiate with us

Main technical characters

Input voltage: 380V 3phase 50HZrated voltage 10%
2.Output voltage:125V 1phase 50HZ rated voltage +5% (no load)
Efficiency: 95%
.Waveform distortion: no additional waveform distortion
Function: indication of input voltage, output voltage and current.
Protection: over-current protection
Can operate itself without anybody attending for a long term
Insulation resistance: 50M
Electric strength: no breakdown or flash over phenomenon under power frequency sine voltage of 2000V for 1min
Overload capability: for 1min under two times of rated current

Engineered for Safety and Performance

These isolation transformers are constructed with double-wound windings and insulation barriers, providing exceptional electrical separation. The advanced winding and core design, combined with high insulation resistance (>1000 M) and a short-circuit withstand duration of up to 3 seconds, ensure dependable operational safety.

Versatile Mounting and Protection Options

Available in floor, pad, or wall-mounted configurations, these transformers offer flexibility for on-site installation. They come in multiple enclosure ratings (IP21, IP23, IP54), ensuring resilience against dust, water, and environmental factors for reliable indoor and outdoor use.

Optimized for Efficiency and Durability

With high-quality copper windings and CRGO laminated cores, the transformers support low no-load loss (1.5% of rated power) and operate quietly (55 dB at 1 meter). Versatile cooling methodsfrom air to oilhelp maintain steady performance and extend product lifespan even in humid or high-temperature environments.

FAQs of Single-Phase and Three phase Isolation Transformer:

Q: How does an isolation transformer ensure electrical safety in sensitive equipment?

A: Isolation transformers provide galvanic separation between input and output circuits, using double-wound copper windings and insulation barriers. This prevents unwanted current flow and suppresses electrical noise, offering robust safety for voltage-sensitive or sensitive equipment.

Q: What power capacities and voltage options are available?

A: These transformers are available in capacities from 1 kVA up to 500 kVA, with rated and output voltage options such as 110V, 220V, or 415V, and high voltage up to 33 kV. Each model can be tailored to meet specific voltage and capacity requirements.

Q: When should I choose air-cooled versus oil-immersed cooling methods?

A: Air-cooled transformers (natural or forced air) are ideal when ambient temperatures are moderate, while oil-immersed cooling is recommended for higher capacity or environments with higher temperature and humidity levels, ensuring prolonged and reliable performance.

Q: Where can these transformers be installed and what mounting options exist?

A: They can be installed both indoors and outdoors, thanks to enclosure options like IP21, IP23, and IP54. Mounting choices include floor, pad, or wall, supporting installation in factories, commercial buildings, and specialized facilities.

Q: What standards and certifications do these transformers comply with?

A: They conform to both Indian (IS 2026) and international (IEC 60076, CE certification) standards, ensuring safety, quality, and reliability in various operational environments worldwide.

Q: How does the tap changer feature benefit transformer operation?

A: The optional tap changer, available off-circuit or on-load, allows for voltage adjustment according to load demands or fluctuations. This helps optimize equipment performance and maintains voltage stability.

Q: What are the main benefits of using double-wound isolation transformers with high insulation resistance?

A: Double-wound transformers with insulation resistance greater than 1000 M offer excellent protection against electrical shocks, minimize leakage current, help with noise reduction, and safeguard sensitive equipment from transient voltage and surges.

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