Control stations of the SU ChR AV Etalon series
Purpose and scope of application
The control station of the SU CR AV ETALON series, a frequency converter with an active rectifier, is designed for frequency control, operation optimization and protection of submersible electric pumps equipped with an asynchronous electric motor of the PAD series. This SU series fully provides all the properties and characteristics of the SU CR ETALON series. A distinctive feature of this series is the presence of an active input rectifier, which provides a low coefficient of input current (and therefore voltage) harmonic distortion of the network.
Functional capabilities
The control system of the ChR ensures the operation of the pumping unit in the following modes:
- manual or automatic control of the PED rotation speed
- acceleration, smooth braking, reversal of rotation of the PED with a variable U/F characteristic for various types of loads
- modes of forcing the starting torque of an asynchronous motor (inching mode and wedging of the pumping unit)
- operation in the mode of programmatic change of output frequency over a specified period of time
- operation in the mode of maintaining a technological parameter (pressure, current, analog signal)
Main Features
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Supply voltage, V
380 ±30%
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Nominal current of the power circuit, A
250 400 630 800
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Temperature range, °C
-60...+50
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Output frequency change range, Hz
1...80
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Efficiency with built-in LC filter, not less than, %
95
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Degree of protection
lр43
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Output voltage and current sinusoidal distortion coefficient, no more than, %
5
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Input current sinusoidal distortion coefficient, no more than, %
5
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Total harmonic distortion coefficient
3
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Overall dimensions, mm, no more than
1590x1140x2075
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Weight, no more than, kg
750
Distinctive Features
- a power inverter manufactured by Semikron, which offers increased reliability under difficult operating conditions, has a built-in VFD controller and power switch protection
- compliance with international electricity quality standards
- built-in sine filter, providing low harmonic distortion at the output of the control system
- Consumption of only active current from the network due to the properties of the active rectifier
- The input power factor from the grid side in the load range of 40...100% is within the range of 0.97...0.99
- the possibility of energy recovery back into the grid
- The active rectifier not only does not introduce distortion into the power supply network, but also helps to improve the sinusoidal shape of the supply voltage waveform, and the efficiency directly depends on the load of the control system
- Possibility of additional installation of a SET-4TM commercial electricity meter with integration of readings into the controller and output of information to an external RS-485 interface
- the mode of picking up the forward rotation of the PED and intercepting the reverse rotation with subsequent stopping and smooth starting in the forward direction
- Transferring an archive using a standard industrial USB flash drive (allows you to transfer data to a computer without additional devices)
- TMS panel for installation without modification of ground units from various manufacturers
Optional
12/18-pulse version of the rectifier SU
Works with various types of TMS both via a serial digital port and via analog inputs.
