25 kVA Isolation Transformer, 3 Phase, 440V to 220V

• Model: PEACO-SGG-25KVA
• Capacity*: 25 kVA (Customized)
• Frequency : 50Hz/60Hz
• Primary voltage (VAC)* : 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 440V/ 415V/ 460V/ 480V/690V...(Customized)
• Secondary voltage (VAC)* : 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 440V/ 415V/ 460V/ 480V/690V...(Customized)
• Withstand voltage test: 100% tested. Primary to secondary 2.5kV AC/min; Primary to safety ground 2.5kV AC/min; Secondary to safety ground 2.5kV AC/min. (does not have both puncture and break-down)
• Insulation resistance : >100MΩ / DC500V
• Insulation class: F/H
• Overload capability: 300% for 10 seconds, 150% for 120 seconds
• Efficiency : ≥98%
• Short circuit impedance: 4%
• Total Harmonic Distortion: ≤1%
• Power factor: 0.8
• Primary to secondary winding isolation voltage: 1000V~3000V
• Connection type*: standard Dyn11 and customized Ynyn0, Yd11, Dd0. Dyn5. Dzn0, etc, as per customer requirements.
• Temperature rise limit: 100K (actual temperature minus ambient temperature)
• Enclosure protection grade*: standard IP22 indoor ( contact us for customized electrostatic shield or IP54, IP65 outdoor).
• K factor: Standard K4 (contact us for customized)
• Cooling mode: Natural cooling/fan system cooling
• Display*: Analogue Display, digital display.
  

Transformer Material

• Material*: Transformer coil adopts 200-degree high-temperature copper or aluminum wire.
• Winding material: 100% copper or aluminum (Optional)
• Insulation Class: H Class

Working Environment

• Noise: ≤45dB (within 1m)
• Environment temperature : -20℃~+50℃, indoor enclosure, floor-mounted

Quality Assurance

• Standard : IEC60076-1, VDE0550, IEC439, JB5555, GB5226, etc.
• Certification: CE, RoHS, and ISO:9001
• Design Life: 30 years
• Warranty: 1 year

1. Isolation transformers prevent transmission of the DC component in signals from one circuit to the other but allow AC components in signals to pass. Such an isolation transformer provides a ratio of 1 to 1 between the primary and secondary windings. It is widely used to protect secondary circuits and individuals from electrical shocks between energized conductors and earth ground.
2. Additionally, the 1 to 1 isolation transformer has the function of anti-harmonic interference caused by ground loops and it comes with electrostatic shields so that such transformers are used for power supplies for sensitive equipment, such as computers, medical equipment, audio equipment, robot devices or laboratory instruments.
3. We provide custom isolation transformers with special input and output voltages. For example, 240V to 240V isolation transformers, 400V to 400V, 480V to 400V, 380V to 220V, 440V to 230V step-down transformers, 380V to 460V step-up transformers, etc can be customized. The three-phase isolation transformers in Peaco Support have the following features and benefits:

• Silicon Steel Sheet

A new cold-rolled silicon steel sheet, 0.27mm, 0.30mm, 0.35mm of thickness, an excellent performance.

• Terminal Block

High-quality terminal block, excellent temperature resistance, pressure resistance, and flame retardancy for small power. For high power, made of quality copper material, with good electrical conductivity, and high temperature resistance, hard to burn out the equipment when a short circuit happens.

• Enameled Wires

H class enameled copper or aluminum wires for options, temperature resistance 200℃, winded tightly and uniformly, no insulating layer, high heat dissipation, service life ≥35 years.

• Bobbin

The bobbin of the isolation transformer is made of nylon, with high-temperature resistance, and great flame retardancy. The high-power transformer with a frameless design has ventilation slots between the coils for smooth airflow, which reduces the temperature of the coils.

• Insulation Process

The 25 kVA isolation transformer adopts H-class vacuum-impregnated insulation, temperature resistance of 200°C, lower noise, better insulation, and anti-rust and anti-corrosion.