MiCOM Alstom P24x relays offer advanced protection, control and monitoring. Their versatility provides comprehensive protection for both induction and synchronous machines.

Basic description:

• Advanced motor protection/control/monitoring relays for both synchronous and induction motors with up to 10 RTD inputs 

• Enhanced diagnostics and fault analysis 

• Optimised machine thermal image monitoring 

• Customised thermal curve to match more closely with the machine withstand limits 

Key customer benefits:

• Programmable Scheme Logic to allow easy customisation of the protection and control functions Comprehensive communication including IEC 61850 Reacceleration (27LV) / low voltage ride through auto restart feature Advanced post fault analysis Wide choice of communication protocols (IEC 61850, IEC 60870-5- 103, Modbus &Courier)

Main characteristics:

• User programmable operate/reset curves for thermal, overcurrent and earth fault protection 

• Loss of field and out of step, anti backspin and loss of load, 3 phase volt check, phase reversal, VTS and CTS. Comprehensive start sequence and re-acceleration scheme 

• RTD and CLIO (current-loop I/O) available as hardware options 

• 2 independent setting groups 

• Option of up to 10 RTD inputs, with a selection of different RTD types

Overall differentiation factors:

• Current loop analogue inputs and analogue outputs for remote monitoring 

• Harsh Environment Protection extends the life of the product 

• Redundant IEC61850 Ethernet 

• Binary inputs offer programmable pickup voltage thresholds and programmable filtering - truly universal application 

• ATEX certified for hazardous areas

Models available:

• P241 Motor Management IED

• P242 Motor Management IED with Extended I/O

• P243 High-speed differential protection for large motors - protects your investment