750VA isolation transformer with three phase comes with primary voltage 690V AC and secondary voltages 230V AC, 50Hz/60Hz frequency, H-class vacuum impregnated insulation. Other voltages can be custom-made for your needs. Dry type isolation transformer to step down voltage for protecting against electric shock, transfering power in industry.
|Winding Material*||Enameled copper wire or enameled aluminum wire (Optional)|
|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...(Customized)|
|Withstand Voltage Test||Primary to secondary AC 10KV/min; Primary to safety ground AC 10KV/min; Secondary to safety ground AC 3.0KV/min. (Customized: 100% tested with 4000 VRMS Hipot)|
|Insulation Resistance||Primary to secondary 2500V>100 megohm; Primary to safety ground 2500V>100 megohm; Secondary to safety ground 1500V>100 megohm.
|Frequency*||50 / 60Hz||Insulation Class||F/H|
||Ynyn0, Yd11, Dyn11, Dd0, Dyn5, Dzn0 (Optional)
||Enclosure Protection Grade
|Induction Withstand Voltage Test||125Hz/ 800V/60s||Ground Resistance||25A<100 milliohm|
|Cooling Method||Natural or air cooling||Transformation Ratio||<3%|
|Air Carrying Current||<3%||Impedance Voltage||About 4.5%|
|Total Losses / Efficiency||4% / ≥ 80%~99%||Operating/Storage Temperature
||-15℃~40℃ (40℃, 93% RH, 56 days)|
||F≤100K, H≤125K||Noise||≤ 60dB (A) (within 1 m)
|Certificate||CE||Designed Life / Warranty||30 years / 1 year|
Note: * denotes optional and customized parameters and you can select every parameter in drop-down lists to complete your order.
- Silicon Steel Sheet: New cold rolled silicon steel sheet, 0.27mm, 0.30mm, 0.35mm of thickness, 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, high temperature resistance, not easy to burn out the equipment when short circuit happens.
- Enameled Wires: H class enamelled copper/aluminum wires, temperature resistance180℃, winded tightly and uniformly, no insulating layer, high heat dissipation, service life ≥35 years.
- Bobbin: Made of nylon, high temperature resistance, great flame retardancy. The high power transformer with frameless design has ventilation slots between the coils for smooth air flows which reduce temperature of coils.
- Insulation Process: The whole dry type isolation transformer adopts H-class vacuum impregnated insulation, temperature resistance of 180°C, lower noise, better insulation and is anti-rust and anti-corrosion.