{PDF} Areva MiCOM P241-P243 – Rotating Machine Management Relays. Short Technical Description

Areva, Electronic Edition, 2004. ? 8 pages.
Publication L3-P24x-BR-05.04-0389-GB.
?? ?????????? ?????.MiCOM P24x relays:
– Provide comprehensive protection for both induction and synchronous machines.
– Offer machines differential function (87).
– Optimize the machines thermal image monitoring.
– Facilitate and provide an aid to maintenance.
– Improve monitoring conditions.
– Save wiring cost.
– Reduce the addition of transducers and measurement devices.
The MiCOM P24x are more than a conventional protection relay. They offer numerous additional functions suitable and crucial for a wide range of applications, which involve:
– Protection.
– Monitoring.
– Diagnosis.
– Fault analysis tools.
– Aid to maintenance.
Compact, specially developed and designed for rotating machine, the MiCOM P24x relays perform an essential role in many industrial processes and generations where the following requirements must be achieved:
– Medium sized and large rotating machines.
– High inertia.
– Differential protection.
– Large range of starting and stalling currents and times.
– Large range of thermal withstand under balanced or unbalanced conditions.Table of Contents:Customer Benefits.
Application.
Main Functions.
Functional Overview.
Protection Functions.
Short-Circuit (50/51).
Stator Protection (50N, 51N, 67N).
Circuit Breaker Failure Protection (50BF).
Number of Starts – Time between Starts (66).
Under Power / Loss of Load (37).
Negative Sequence Overcurrent (46).
Reverse Power (32R) Synchronous Machines.
Reverse Phase Sequence Detection (47).
Thermal Overload (49).
Stator Differential (87) (P243 Only).
Under/Overvoltage (27/59).
Residual Overvoltage (59N).
Underfrequency (81U) Synchronous Machines.
Start / Stall Protection (48/51LR).
Emergency Restart.
Reacceleration Authorisation.
Out-of-Step / Power Factor (55) Synchronous Machines.
Resistive Temperature Detectors (26).
Analog Inputs.
Control Functions.
Independent Protection Setting Groups.
Programmable Scheme Logic.
Circuit Breaker Control.
Measurements and Recording Facilities.
Measurements.
Motor Specific.
Specific P243.
Event Records.
Fault Records.
Disturbance Records.
Local and Remote Communications.
Remote Communications.
Local Communications.
Software Support.
Hardware Description.
Case.
Weight.