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General| Brand | GE |
|---|---|
| Model | P444 |
| Category | Protection Device |
| Language | English |
Provides comprehensive information on safe handling, commissioning, and testing of equipment, including safety symbols and label markings.
Details procedures for installation, commissioning, and servicing, emphasizing correct working procedures for safety.
Describes the patented high-speed algorithm using superimposed current and voltage values for phase selection and directional decision.
Explains the tripping logic for distance protection, including three tripping modes and zone time delays.
Explains how to set line characteristics and protection zones for the relay.
Details channel-aided distance tripping schemes like Standard, PUP, POP, and BOP, and their requirements.
Explains power swing detection and blocking, including characteristics and conditions for detection.
Details inverse time characteristics, application of timer hold facility, directional overcurrent protection, and setting guidelines.
Explains directional earth fault protection, including methods for directional polarizing.
Details CB Fail status, timer settings, and reset mechanisms for undercurrent protection.
Covers CB condition monitoring features, including operations, fault current, operate time, and reset options.
Details options for control of a single circuit breaker, including local, remote, and opto-isolated inputs.
Details communication settings for various protocols like Courier, IEC 60870-5-103, Modbus, DNP3.0, and Ethernet.
Details confirming power supply voltage and signal magnitudes, and connecting external power.
Explains the menu structure's access levels (3 or 4) controlled by passwords, determining which settings can be changed.
Details system data settings including language, password, description, model/serial number, frequency, and comms level.
Details various protection functions including distance, power swing, overcurrent, negative sequence, earth fault, thermal overload, etc.
Explains distance and resistance measurement, 'Delta' and 'Conventional' algorithms, fault modeling, and phase selection.
Details fault distance characteristics, line and zone settings, fault locator, and channel-aided distance schemes.
Covers application of protection functions like Power Swing, Load Blinding, Overcurrent, Negative Sequence, Earth Fault, Broken Conductor.
Explains the relay software structure, including real-time operating system, system services, platform, and protection & control software.
Details self-monitoring functions for hardware and software, including start-up and continuous self-testing.
Provides an overview of commissioning, emphasizes safety, and explains verification methods for hardware and settings.
Covers pre-commissioning checks for physical damage, correct functioning, and measurement accuracy.
Details functional tests for distance protection, including start control, characteristic limits, and measurements.
Details cyber security measures implemented at the IED level (access, password, port disablement) and externally (antivirus, patching).
Guides on selecting appropriate cable and connector types for terminals, including recommendations for wire size and insulation.
Details functionality checks, including alarms, opto-isolators, output relays, and measurement accuracy.
Describes methods for repairing faults, including PCB replacement and advice on identifying faulty PCBs.
Details the procedure for replacing PCBs, including removing the front panel and handling components safely.
Details procedures to determine if power-up issues are due to external wiring, fuse, power supply, or front panel.
Explains how to interpret error messages displayed during power-up and subsequent actions.
Addresses potential mal-operations during testing, including output contacts, opto-isolated inputs, and analog signals.
Explains the IEC 61850 standard for Ethernet communication in substations and its implementation in MiCOM relays.
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