address:No.10, Lane 669, Min Ta Road, Songjiang District, Shanghai, China
phone:189-1713-2726
email:qianghaibin@sh-yhcd.com
Auto-transformer is used for infrequent step-down starting of AC 50Hz rated voltage 380V power 11~315 (kW) three-phase squirrel cage induction motor to improve the impact on the power transmission network when the motor is started.
功率范圍 Power Range: | 160-800kVA |
輸入電壓 Input Voltage | Rated Input Voltage≤ 1000V ± 10% Δ/Y |
輸出電壓 Output Voltage | Rated Output Voltage < 1000V+5%(no Load) Δ/Y |
效率 Efficiency | ≥95% |
波形失真 Waveform Distortion | No additional waveform distortion |
功能 Function | With input voltage, output voltage, current indication |
保護 Protect | Overcurrent protection |
絕緣電阻 Insulation Resistance | 1000VDC, ≥100MΩ |
電氣強度 Dielectric strength | Core-winding, winding-winding 3000VAC/50H/60s no electric arc or electric breakdown |
過載能力 Max Current | 2 x rated current, 60s |
Work under 2000m Ambient temperature -25 ~ +45℃, relatively humidity not over 90% | |
Adopt F and H class insulation system to maintain excellent electrical and mechanical properties throughout the service life of the auto-transformer. F, H class materials are not easy to age, resistant to shrinkage and compression, so they can ensure that the transformer remains structurally tight after several years of use and can withstand the pressure of short circuits. The entire auto-transformer is impregnated with H-class impregnating paint under vacuum pressure (VPI), and then cured at high temperature in an oven.
VDE0550、IEC439、JB5555、GB5226
