Preface
iv PRS-7910
Documentation Structure
The manual provides a functional and technical description of this relay and a comprehensive set
of instructions for the relay’s use and application.
All contents provided by this manual are summarized as below:
1 Introduction
Briefly introduce the application, functions and features about this relay.
2 Technical Data
Introduce the technical data about this relay, such as electrical specifications, mechanical
specifications, ambient temperature and humidity range, communication port parameters, type
tests, setting ranges and accuracy limits and the certifications that our products have passed.
3 Operation Theory
Introduce a comprehensive and detailed functional description of all protective elements.
4 Supervision
Introduce the automatic self-supervision function of this relay.
5 Management
Introduce the management function (measurement and recording) of this relay.
6 Hardware
Introduce the main function carried out by each module of this relay and providing the definition of
pins of each module.
7 Settings
List of all the settings and their ranges and step sizes, together with a brief explanation of each
setting and some notes about the setting application.
8 Configurable Function
Introduce the configurable function (such as protection function configuration, LED configuration,
binary input configuration and binary output configuration etc.) of this relay.
9 Communication
Introduce the communication port and protocol which this relay can support, IEC60970-5-103 and
IEC61850 protocols are introduced in details.
10 Installation
Introduce the recommendations on unpacking, handling, inspection and storage of this relay. A
guide to the mechanical and electrical installation of this relay is also provided, incorporating
earthing recommendations. A typical wiring connection to this relay is indicated.
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