Alstom MiCOM P846, Technical Manual

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Introduction P846/EN IT/D
MiCOM P846
(IT) 1-3
IT
1. MICOM DOCUMENTATION STRUCTURE
The manual provides a functional and technical description of the MiCOM protection relay
and a comprehensive set of instructions for the relay’s use and application.
The section contents are summarized below:
P846/EN IT Introduction
A guide to the MiCOM range of relays and the documentation structure. General safety
aspects of handling Electronic Equipment is discussed with particular reference to relay
safety symbols. Also a general functional overview of the relay and brief application
summary is given.
P846/EN TD Technical Data
Technical data including setting ranges, accuracy limits, recommended operating conditions,
ratings and performance data. Compliance with norms and international standards is quoted
where appropriate.
P846/EN GS Getting Started
A guide to the different user interfaces of the protection relay describing how to start using it.
This section provides detailed information regarding the communication interfaces of the
relay, including a detailed description of how to access the settings database stored within
the relay.
P846/EN ST Settings
List of all relay settings, including ranges, step sizes and defaults, together with a brief
explanation of each setting.
P846/EN OP Operation
A comprehensive and detailed functional description of all protection and non-protection
functions.
P846/EN AP Application Notes
This section includes a description of common power system applications of the relay,
calculation of suitable settings, some typical worked examples, and how to apply the settings
to the relay.
P846/EN PL Programmable Logic
Overview of the programmable scheme logic and a description of each logical node. This
section includes the factory default (PSL) and an explanation of typical applications.
P846/EN MR Measurements and Recording
Detailed description of the relays recording and measurements functions including the
configuration of the event and disturbance recorder and measurement functions.
P846/EN FD Firmware Design
Overview of the operation of the relay’s hardware and software. This section includes
information on the self-checking features and diagnostics of the relay.
P846/EN CM Commissioning
Instructions on how to commission the relay, comprising checks on the calibration and
functionality of the relay.
P846/EN MT Maintenance
A general maintenance policy for the relay is outlined.
P846/EN TS Troubleshooting
Advice on how to recognize failure modes and the recommended course of action. Includes
guidance on whom within Alstom Grid to contact for advice.