The SG Three Phase Dry Type Transformer is designed for AC 50Hz-60Hz power supply applications with voltage below 500V. It uses dry type transformer construction with damp-proof characteristics and convenient maintenance for power transmission and distribution locations such as underground railway, high buildings, airports, stations, wharfs, enterprises and tunnels.
Working Environment
Ambient temperature: -15C to +40C.
Altitude: <1000m.
Relative humidity: <90%.
Use in environments without gas, steam, chemical deposits, dust, dirt, explosive medium or corrosive medium that may affect insulation.
Technical Characters
Input voltage: rated voltage ±10%.
Output voltage: rated voltage +5% with no load.
Efficiency: ≥95%.
No additional waveform distortion.
Input voltage, output voltage and current indication.
Over-current protection.
Insulation resistance: ≥50MOhm.
Electric strength: no breakdown or flashover under 2000V power frequency sine voltage for 1 minute.
Model Implication
SG dry type transformer model code identifying the three-phase format and rated capacity.
