The dedicated control cabinet for screw pumps consists of a cabinet body, electrical components, instruments, frequency converters, and central control modules. It can be remotely controlled, protected, and tuned through specific means, and is a centralized control, protection, and monitoring upper computer device.
Technical performance
The rated voltage is 380/660V, and a step-up transformer needs to be installed in the 660V control cabinet;
Adopting long-distance position free encoder vector control technology, it can adapt to cable lengths ≥ 2000m;
The speed control accuracy of long-distance vector control without position encoder is ± 0.2%;
Long distance non position encoder vector control speed fluctuation ± 0.3%;
The control cabinet is equipped with a screw pump with anti dry pumping function;
The control cabinet is equipped with permanent magnet synchronous motor anti demagnetization control technology, which effectively improves the service life of the motor;
The control cabinet is equipped with an electric submersible screw permanent magnet drive system with runaway protection function;
The installation and wiring of control cabinet components should be firm, upright, and correct, and all connecting wires should have clear, secure, and complete markings and labels;
All components in the control cabinet meet the performance requirements of relevant product standards for each component;
The electrical clearance, creepage distance, dielectric performance, temperature rise limit, and short-circuit protection inside the control cabinet comply with GB/T3797 regulations.
Technical Parameter
model | PMMLIFT-C-380-22-O | |
power input | rated voltage（ V） | 3 phases: 380V~480V； Continuous voltage fluctuation ± 10%, brief fluctuation -15%~+10% |
input current（ A） | 46.5 | |
Rated frequency（ Hz） | 50Hz/60Hz，Range±5% | |
power output | Standard applicable motor（ KW） | 15 |
Rated current（ A） | 45 | |
Output voltage（ V） | Output 3-phase under rated input conditions, 0~rated input voltage, with an error of less than ± 3% | |
OUTPUT FREQUENCY（ Hz） | 5~30Hz | |
control characteristics | control mode | Encoder free magnetic flux vector control |
Speed control accuracy | Encoder free magnetic flux vector control: ± 0.2% | |
Speed fluctuation | Encoder free magnetic flux vector control: ± 0.3% | |
Output filtering device | Built in filtering device for long cable applications | |
Anti dry pumping model | The control cabinet has built-in screw pump anti dry pumping function | |
data interface | Underground data acquisition device data interface; RS485 and other standard industrial communication ports. | |
model | PMMLIFT-C-660-37-O | |
power input | rated voltage（ V） | 3-phase: 520V~690V; The voltage fluctuates continuously by ± 10% and briefly by -15%~+10%, i.e. 422V~759V; Voltage imbalance rate<3% |
Rated frequency（ Hz） | 50Hz/60Hz, fluctuation range ± 5% | |
power output | Standard applicable motor（ KW） | ≤37 |
Output voltage（ V） | Output 3-phase under rated input conditions, 0~rated input voltage, with an error of less than ± 3% | |
OUTPUT FREQUENCY（ Hz） | Vector control 0~650Hz | |
control characteristics | control mode | Long distance positionless encoder vector control technology |
Speed control accuracy | Long distance positionless encoder vector control technology: ± 0.2% | |
Speed fluctuation | Long distance positionless encoder vector control technology: ± 0.3% | |
Output filtering device | Built in filtering device for long cable applications | |
data interface | Underground data acquisition device data interface; RS485 and other standard industrial communication ports. | |
Anti dry pumping model | The control cabinet has built-in screw pump anti dry pumping function | |
