Monitoring, control and protection of 3—250 kW downhole electrical motors.

Advantages

• small overall sizes and weight
• easy operation and maintenance
• easy connection
• 4-line display
• logs downloading to USB drive
• software updating without submersible electric motor operation interruption
• compliance with LUKOIL, ROSNEFT, SURGUTNEFTEGAS, GASPROMNEFT companies requirements and GOST R51321.1-2007 standard
• bus-type power systems (applicable for drives with current rating above 250 A)

IRZ-200 ensures

• 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, load factor, consumed power, operation time
• connection to IRZ’s or another manufacturer’s Surface Readout Unit
• record of controlled parameters and causes of SEM motor switch offs in real time and saving of the records during power supply interruptions
• equipment preservation in emergencies caused by the failures of power system or downhole equipment

With protection system activated, the station automatically restarts when parameters return back to the operating range.

Switchboard

• enables connection of 220V 10A devices via female connector on operator’s panel of the station
• can be integrated into oilfield telemechanics (normally closed and normally open contacts)
• connecting to SCADA-system through RS232 or RS485 interfaces with Modbus-RTU communications protocol
• uploading data on the Internet through GPRS-modem

The switchboard can be equipped with a power metering system registered in the State Register of Measuring Devices (Russia) upon request.

Technical characteristics

Parameter	Value
Supply voltage, V	190…520
Motor power, kW	3…250
Control of motor operating current, A (performed based on the primary winding of the pump transformer with re-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

Modifications

Designation	Rated current, A	Overall dimensions, mm	Weight, 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

Catalogues and documents

Direct-on-line start control stations IRZ-200 series