Areva, Electronic Edition, 2008. — 46 pages.
Publication P24x/EN TDS/I42.
Software Version: 51.
Hardware Suffix: J (P241), K (P242/3).
На английском языке.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).
Wattmetric Earth Fault (32N/64N).
Circuit Breaker Failure Protection (50BF).
Current Transformer Supervision.
Number of Starts - Time between Starts (66).
Loss of Field (40).
Under Power / Loss of Load (37).
Negative Sequence Overcurrent (46).
Reverse Power (32R) Synchronous Machines.
Reverse Phase Sequence Detection (47).
Phase Reversal.
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.
Anti-Backspin (27ABS).
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.
Control Inputs.
Function Keys (P242 and P243 only).
Indication.
Technical Data.
Mechanical Specifications.
Terminals.
Ratings.
Power Supply.
Output Contacts.
Environmental Conditions.
Type Tests.
Electromagnetic Compatibility (EMC).
EU Directives.
Mechanical Robustness.
P24x third Party Compliances Underwriters Laboratory (UL).
Protection Functions.
Thermal Overload.
4-Stage Non-directional Short-Circuit Protection.
Sensitive Directional Earth Fault.
2-stage Negative Phase Sequence over Current.
3 Phase Voltage Check.
2 Stage Directional/Non-directional Derived Earth Fault.
Stall Protection.
Motor Differential Protection.
Neutral Displacement/Residual over Voltage.
Loss of Load.
Out of Step.
Anti-backspin.
Reverse Power.
Field Failure.
Undervoltage Protection.
Overvoltage Protection.
Underfrequency.
Resistive Temperature Detectors.
CB Fail.
CB State Monitoring Control and Condition Monitoring.
Programmable Scheme Logic.
Measurements and Recording Facilities.
Measurements.
IRIG-B and Real Time Clock.
Current Loop Input and Outputs.
Disturbance Records.
Event, Fault & Maintenance Records.
Settings, Measurements and Records List.
Settings List.
Protection Functions.
Supervisory Functions.
Plant Supervision.
Measurements List.
Case Dimensions.
P241 Case Dimensions (40TE Case).
P242 Case Dimensions (60TE Case).
P243 Case Dimensions (80TE Case).
Connection Diagrams.
P241 External Connection Diagram – 3VTS Connection + RTD Option.
P241 External Connection Diagram – 2VTS and Residual Connection + RTD Option.
P241 External Connection Diagram – RTD Option.
P241 External Connection Diagram – 3VTS Connection + CLIO Option.
P241 External Connection Diagram – CLIO Option.
P242 External Connection Diagram – 3VTS Connection + RTD + CLIO Options.
P242 External Connection Diagram – 3VTS Connection + RTD + CLIO Options.
P243 External Connection Diagram – 3VTS Connection + RTD + CLIO Options – Biased Differential (87M).
P243 External Connection Diagram – 3VTS Connection + RTD + CLIO – High Impedance Differential (87M).
P243 External Connection Diagram – 3VTS Connection + RTD + CLIO Options.
Ordering Information.
P241 Motor Protection Relay.
P242 Motor Protection Relay.
P243 Motor Protection Relay.
Software Support.
Hardware Description.
Case.
Weight.
