60 kVA 3 Phase Isolation Transformer, 480V to 208V
- Stock: In Stock
- Model: PEACO-SG-60KVA
- SKU: PEACO-SG-60KVA
$7,568.67
Ex Tax: $7,568.67
Three phase isolation transformer with 60 kVA capacity is a dry type isolation transformer used to transform electrical power from a source and protect against electric shocks. Primary voltage of 480V to secondary voltage of 208V, delta connection or star connaction, heat dissipation, overload protection available.
60 kVA Isolation Transformer Specification
| Model | PEACO-SG-60KVA | ||
| Winding Material* | Enameled copper wire or enameled aluminum wire (Optional) | ||
| Capacity* | 60 kVA (Customized) | ||
| 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/ 480V690V...(Customized) | ||
| Withstand Voltage Test | 100% tested. Primary to secondary AC 2.5KV/min; Primary to safety ground AC 2.5KV/min; Secondary to safety ground AC 2.5KV/min. (Customized: with 4000 VRMS Hipot) |
||
| Insulation Resistance | Primary to secondary >100 megohm; Primary to safety ground >100 megohm; Secondary to safety ground >100 megohm. |
||
| Frequency* | 50 / 60Hz | Insulation Class | F/ H |
| Connection Type |
Ynyn0, Yd11, Dyn11, Dd0, Dyn5, Dzn0 (Optional) |
Enclosure Protection Grade |
IP20 (Customized) |
| Induction Withstand Voltage Test | 125Hz/ 760V/60s | Ground Resistance | 25A<100 milliohm |
| Cooling Method | Natural or air cooling | Transformation Ratio | <3% |
| No-load Current | <1% | Impedance Voltage | About 4 % |
| Total Losses / Efficiency | About 3% / ≥ 97% | Operating/Storage Temperature |
-25℃~40℃ (40℃, 93% RH, 56 days) |
| Temperature Rise |
F≤100K, H≤125K |
Noise | ≤ 60dB (A) (within 1 m) |
| Certificate | CE, ISO | 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.
60 kVA Isolation Transformer Features
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 ransformer provides a ratio of 1 to 1 between the primary and secondary windings, is widely used to protect secondary circuits and individuals from electrical shocks between energized conductors and earth ground. Additionally, the 1 to 1 isolation transformer has the function of anti-harmonic interference caused by ground loops and 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.
- 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 resistance 180℃, 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 20 kVA isolation transformer adopts H-class vacuum impregnated insulation, temperature resistance of 180°C, lower noise, better insulation and is anti-rust and anti-corrosion.
60 kVA Isolation Transformer Dimension (Unit:mm)
| Types | Dimension | Weight | |||
| Open Type (A*B*C) | Mounting Size (D*E) | Enclosed Type (A*B*C) | Open Type | Enclosed Type | |
| Aluminium Wire Transformer | 560*330*550mm | 380*190mm | 550*950*930mm | 225kg | 280kg |
| Copper Wire Transformer | 560*360*530mm | 380*210mm | 550*950*930mm | 275kg | 345kg |
Isolation Transformer Schematic Diagram
KNOWLEDGE BASE --- Why should the iron core of the isolation transformer be grounded?
When the power isolation transformer is working normally, the iron core must be grounded reliably. If there is no grounding, the floating voltage of the iron core to the ground will intermittently cause breakdown discharge of the iron core to the ground. After the iron core is grounded at one point, the possibility of forming the floating potential of the iron core will be eliminated. However, when the core is grounded at more than two points, the uneven potential between the cores will form a circulation between the ground points and cause the heating fault of the core due to multi-point grounding.
The ground fault of the iron core of the isolation transformer will cause local overheating of the iron core. In some severe cases, the local temperature rise of the iron core will increase, light gas will act and even a tripping operation will hanppen due to heavy gas action. The fused partial iron core forms a short-circuit fault, which increases the iron loss and seriously affects the performance and normal operation of the isolation transformer and even the iron core silicon steel sheet has to be replaced. Therefore, the isolation transformer does not allow multi-point grounding and can only have one point grounding.
