The offered cheap price isolation transformer is single phase for 50/ 60Hz AC circuit, with 8 kVA power rating, primary voltage of 120V, it also provides a secondary voltage of 120V, isolating the powered device from the power source, usually for safety reasons.
8 kVA Isolation Transformer Specifications
||120V AC (optional: 110V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
||120V AC (optional: 24V/ 36V/ 48V/ 110V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
||50Hz / 60Hz
||Aluminium/Copper wire (Optional)
||2000V AC/1 min
||≤35dB (1 meter)
||Grade B (130℃), Grade F (155℃), Grade H (180℃)
||Natural or air cooling
||Allow more than 1.2 times rated load to work for up to 1 hour
||≤90%RH, without condensation
||<2000m, non corrosive gas and conductive dust
||290*245*305 mm (open type);
440*395*455 mm (protected type)
||About 68 kg (open type);
About 75 kg (protected type)
Transformer can only convert voltage and CANNOT convert frequency.
Transformer CANNOT convert single phase voltage to 3 phase voltage.
Support voltage customization, various specifications customization.
Single Phase Isolation Transformer Schematic Diagram
8 kVA Isolation Transformer Dimension
Basic principle of gas protection
Gas protection shows the gas quantity and oil flow velocity in a fault. When the transformer internal fault occurs, the local high temperature at the fault point increases the oil temperature of the transformer and expands the volume, air in the oil is discharged to form an ascending gas. If an arc is generated at the fault point, the transformer oil and insulation materials will decompose large quantities of gas, which flow from the tank to the oil conservator. The more serious the fault is, the more gas it produces, and the faster flowing speed of the oil to the oil conservator. The gas quantity and oil flow velocity can directly reflect the character and severity of transformer faults, so light gas acts on the signal when the gas quantity and oil flow velocity are small. When the fault is rather serious, the oil flow velocity is fast and heavy gas protection acts immediately on a tripping operation.