20 kVA Isolation Transformer, 3 Phase, 480V to 240V
- Stock: In Stock
- Model: PEACO-SGG-15KVA/PEACO-SGG-20KVA
- SKU: PEACO-SGG-15KVA/PEACO-SGG-20KVA
$3,799.67
Ex Tax: $3,799.67
20 kVA isolation transformer has the function of anti-harmonic interference, is a 1 to 1 isolation transformer. The 3 phase isolation transformer has a primary & secondary voltage rating of 120V/480V/690V AC, other voltages can be cutomized. Aluminum/ copper windings, open and enclosed type transformers are optional. High performance and cost-effective dry type isolation transformer for medical equipment, robot devices, etc.
Technical Parameters
- Model : PEACO-SGG-15KVA/PEACO-SGG-20KVA
- Capacity* : 15 kVA/20 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 : B/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 requriements.
- 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).
- 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)
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
Note: * denotes optional and customized parameters and you can select every parameter in drop-down lists to complete your order.
Features and Benefits
- 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 20 kVA isolation transformer adopts H-class vacuum impregnated insulation, temperature resistance of 200°C, lower noise, better insulation and is anti-rust and anti-corrosion.
20 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 | 440*310*430mm | 300*165mm | 420*610*610mm | 113kg | 140kg |
| Copper Wire | 440*310*420mm | 300*165mm | 420*610*610mm | 123kg | 148kg |
Isolation Transformer Schematic Diagram
KNOWLEDGE BASE --- Isolation Transformer Function
The principle of isolation transformer is the same as that of ordinary transformer, which is based on the principle of electromagnetic induction. Isolation transformers generally refer to 1:1 transformers (1 to 1 isolation transformer). Because the secondary is not connected to ground. There is no potential difference between any of the secondary wires and ground. Therefore, it is safe to use, frequently used as a maintenance power supply.
Not all isolation transformers are 1:1 transformers. The power supply for the control transformer and valve equipment, power supplies, such as tube amplifiers, tube radios, oscilloscopes and lathe control transformers are all isolation transformers, which has the function of anti-harmonic interference and is commonly used in medical equipment, audio equipment and robot device for safe maintenance.
Peaco Support provides a wide selection of isolation transformers, including 480v to 480v isolation transformer, 240v to 240v isolation transformer, 120v to 120v isolation transformer, 220v to 220v isolation transformer, 240V to 110V isolation transformer, 110V to 110V isolation transformer, etc. which have high quality with CE certification. The isolation transformer price is competitive.
