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IRZ-200 series switchboards for ESP

Operation, control and protection of submersible electric motors (SEM) with capacity from 3 to 250 kW.


  • small size, low weight
  • easy for use and service
  • easy to connect
  • four-line display
  • reading history on USB memory card
  • compliant to standards of LUKOIL, ROSNEFT, SURGUTNEFTEGAS, GASPROMNEFT and GOST R 51321.1-2007 standard
  • bus design of power systems in control station versions with current rating over 250 A


  • motor control in manual or automatic mode
  • continuous control of supply voltage, order of phase sequence, currents in three phases and isolation resistance of the “pump transformer — power cable — motor” link
  • calculation of voltages and currents unbalance, power factor, SEM load factor, consumed power, operation time
  • connection to ground acquisition units produced by IRZ TEK and other manufacturers
  • record of controlled parameters and causes of SEM switch-offs in real time and saving of the records during power supply interruptions
  • protection of equipment against emergency modes caused by failures in electric mains and submersible system

After actuation of the protection system, the station automatically restarts when parameters return to the working range.

The control station

  • allows for connection of appliances with 220 V rated voltage and up to 10 A consumption current to a female connector on the operator’s panel of the station
  • can be integrated into oilfield telemechanics (normally closed and normally open contacts)
  • can be connected to a SCADA-system via RS-232 or RS-485 interfaces using the Modbus-RTU communications protocol
  • has a GPRS-modem to transmit data via Internet

Upon request, the control station may include a power metering system registered in the State Register of Measuring Devices.

Supply voltage, V 190…520
Power of connected motor, kW 3…250
Control of motor operating current, A (performed based on the primary winding of the pump transformer with computation into the actual motor operating current) 0…2000
Control of insulation resistance of the “transformer — power cable — motor” link, kOhm 0…10000
Control of turbine rotation frequency, Hz 1…50
Error of current, voltage, rotation frequency and time setting control, % 2
Error of insulation resistance control, % 5
Enclosure protection class IP43
Operating temperature, °С -60…+50


DesignationRated current of control station, АOverall dimensions, mmWeight, kg
IRZ–200–25 25 1685х765х635 180*
IRZ–201–250 250 130
IRZ–202–400 400 140
IRZ–203–630 630 150

* — with built-in output isolation transformer

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