Overview

20-750-I1B-C770D740 is a replacement inverter of the PowerFlex 750 series. It is suitable for three-phase AC power. It has an output current of 770A under 400VAC and 50Hz operating conditions and an output current of 740A under 480VAC and 60Hz operating conditions. The voltage and frequency adaptation characteristics can match the industrial power grid standards in different regions.

FAQ:

1.What is the motor power range that 20-750-I1B-C770D740 is suitable for? Can it drive industrial motors above 200kW?

20-750-I1B-C770D740 has an adaptable power of about 460kW (400V)/530kW (480V) and can drive motors above 200kW. The actual motor load and parameter debugging need to be matched.

However, it should be noted that during actual adaptation, it is necessary to combine the load type (constant torque/constant power, etc.) and operating conditions of the motor to complete the matching and debugging of motor parameter identification and module parameters to ensure operational stability.

2.20-750-I1B-C770D740 What are the specific requirements for the heat dissipation conditions and installation space of the control cabinet?

1. Heat dissipation: The temperature inside the cabinet is 0-50°C, and the humidity is 5%-95%. High power requires forced air cooling/cabinet air conditioning. Keep away from heat sources and ensure smooth air ducts;
2. Installation: vertical installation, leaving a gap of ≥100mm above and below, suitable for No. 8 base cabinet, multiple units can be installed side by side.

3.What are the rated powers of 20-750-I1B-C770D740 under 400V/50Hz and 480V/60Hz operating conditions?

1. 400V/50Hz working condition: Its rated output current is 770A. Calculated according to the three-phase asynchronous motor power formula P≈√3×U×I×power factor × efficiency (power factor and efficiency are usually 0.85 in industrial scenarios), the power is approximately √3×400V×770A×0.85×0.85≈460kW;
2. 480V/60Hz working condition: The rated output current is 740A. Estimated similarly, the power is about √3×480V×740A×0.85×0.85≈530kW.