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BECKWITH ELECTRIC M-3425A - User Manual

BECKWITH ELECTRIC M-3425A
482 pages
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Instruction Book
M-3425A
Generator Protection

Table of Contents

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Summary

Chapter 1 Introduction

1.1 Instruction Book Contents

Provides a review of manual contents and installation considerations.

1.2 M-3425 A Generator Protection Relay

Describes the microprocessor-based unit for generator protection.

1.3 Accessories

Lists optional modules and accessories for the M-3425A relay.

Chapter 2 Operation

2.1 Front Panel Controls and Indicators

Explains the layout and function of front panel indicators and controls.

2.2 Operation (HMI;PC)

Details operation using HMI or IPScom software via serial port.

Chapter 3 IPScom

3.1 IPScom Functional Description

Provides an overview of IPScom features and functions.

Chapter 4 System Setup and Setpoints

4.1 Unit Setup

Covers general unit setup, communications, and oscillograph settings.

4.2 Setup System

Defines common information like CT/VT ratios and nominal values.

4.3 System Diagrams

Provides functional and connection diagrams for typical applications.

4.4 System Setpoints

Describes enabling functions, setpoints, and I/O assignments.

Chapter 5 Installation

5.1 General Information

Provides a review of manual contents and installation considerations.

5.2 Mechanical;Physical Dimensions

Contains physical dimensions for mounting the unit on a rack.

5.3 External Connections

Details terminal connections, power supply, and grounding.

5.4 Commissioning Checkout

Outlines a checkout procedure for external CT and VT connections.

5.5 Circuit Board Switches and Jumpers

Details access to circuit board switches and jumpers.

5.6 Low Frequency Signal Injection Equipment

Represents typical connections for low frequency signal injection.

5.8 Activating Initial Local Communications

Explains steps for establishing initial local communications.

5.9 Initial Setup Procedure

Provides a suggested procedure for entering relay settings.

Chapter 6 Testing

6.1 Equipment;Test Setup

Lists equipment and setup procedures for testing.

6.2 Functional Test Procedures

Details test quantities, inputs, and procedures for each function.

6.3 Diagnostic Test Procedures

Details diagnostic tests for relay components.

6.4 Auto-Calibration

Describes the auto-calibration procedure.

Appendix A Configuration Record Forms

A.1 System Communication Setup

Sets up communication parameters for COM ports and Ethernet.

A.2 Setup System (page 1 of 2)

Configures system parameters like nominal voltage and CT/VT ratios.

A.3 System Setpoints and Settings (page 1 of 38)

Details setpoints for Phase Distance functions.

Appendix B-Communications

Serial Ports

Describes the relay's RS-232 and RS-485 serial ports.

Optional Ethernet Port

Details Ethernet port capabilities for network access.

Appendix C-Self-test Error Codes

Table C‑1 Self-Test Error Codes

Lists and describes self-test error codes.

Table C-2 IPScom Error Messages

Lists and describes IPScom error messages.

Appendix D-Inverse Time Curves

Expression for Time Delay Setting

Defines operating time calculation based on IEC and ANSI/IEEE.

Setting Time Delay on Overcurrent Relays ANSI;IEEE and IEC Constants for Overcurrent Relays

Provides constants for overcurrent relay time delay settings.

Appendix E - Layup and Storage

Storage Requirements (Environment)

Specifies recommended ambient temperature and humidity for storage.

Storage Requirements (Periodic Surveillance During Storage)

Recommends periodic power application to prevent capacitor drying.

Layup Configuration

Details steps to verify system clock status is stopped.

Appendix F - HMI Menu Flow

F.1 HMI Menu Overview

Provides an overview of the HMI menu structure and navigation.

F.2 HMI Menu Flow

Illustrates the HMI menu flow for various relay functions.

Appendix G- Index

Appendix H-Declaration of Conformity

BECKWITH ELECTRIC M-3425A Specifications

General IconGeneral
Frequency50/60 Hz
EnclosurePanel Mount
OscillographyYes
Event RecordingYes
TypeProtection Relay
Current Rating1A or 5A AC
Protection FeaturesOvercurrent, Thermal Overload
CommunicationModbus
MeteringVoltage, Current, Power, Energy, Frequency

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