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QYBP Series Variable Frequency Drive (VFD) switchboard for Electric Submersible Pump (ESP) Unit, developed by Dongying Orientsun Electric Co. Ltd., adopts imported low voltage VFD as well as a wideband step-up transformer which boosts the input voltage to ESP working voltage. This is the international control mode for ESP unit, in the domestic commonly known as high-low-high (HLH) control mode. The switchboard has two working modes of variable frequency and fixed frequency.
1.The switchboard reliability is improved by using imported low voltage VFD;
2.The lifetime of motor and cable is prolonged, because the output wave shape of VFD is like the sine wave after reformed by the filter and the wideband step-up transformer.
1.Input voltage: 380~480V;
2.Output voltage: 800~4000V;
4.Output frequency: 0~60Hz;
5.Dimension: L* W* H= 1200mm* 850(+460 ventilator) *2020 (mm);
6.Weight: 355kg (90kw)
1.Altitude: ≦2000 m;
2.Temperature range: -30 ºC ~ +50 ºC (as requested);
3.Relative humidity: 20% ~ 90% RH, non-condensing;
4.Shell protection level: IP 20 (as requested);
5.No explosive and flammable materials, no corrosive gas, conducting dust and violent vibration.
Technical Parameters of Transformer:
Input voltage: 380~480V;
Output voltage: 800~1500V, 1500~2500V, 2500~4000V;
2.Working frequency: 15~60Hz;
4.Insulation grade: A level.
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