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XRN2
Manual
Woodward XRN2 Manual
Mains decoupling relay
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Contents
Table of Contents
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Table of Contents
Table of Contents
1 Introduction and Application
2 Features and Characteristics
3 Design
Connections
Analog Input Circuits
Blocking Input
Reset Input
Output Relays
Power Supply
Data Communication
Front Plate
Indication- and Operation Elements
Display
Leds
Front Plate XRN2-1
Front Plate XRN2-2
Parameter Settings
4 Working Principle
Analog Circuits
Digital Circuits
Voltage Supervision
Selection of Star or Delta Connection
Principle of Frequency Supervision
Measuring of Frequency Gradient (XRN2-2)
Vector Surge Supervision (XRN2-1)
Measuring Principle of Vector Surge Supervision
Voltage Threshold Value for Frequency Measuring
Blocking Function
5 Operation and Setting
Push Buttons
Indication of Measuring Values and Fault Data
DIP Switches
Function of the Output Relays
Reset
Password
Password Programming
Using the Password
Relay Setting Principle
Setting of Default Parameters
Blocking the Protection Functions
Display of Software Version and Test-TRIP
Low/High Range of Functions Blocking and Reset
6 Special Settings
Adjustable Parameters
Setting Procedure
Parameter Setting of Over- and Undervoltage Supervision
Setting of Nominal Frequency
Number of Measuring Repetitions (T) for Frequency Functions
Threshold of Frequency Supervision
Tripping Delays for the Frequency Elements
Parameter Setting of Vector Surge Supervision (XRN2-1)
Parameter Setting of Frequency Gradient (XRN2-2)
Voltage Threshold Value for Frequency and Vector Surge Measuring (Df/Dt at XRN2-2)
Adjustment of the Slave Address
Setting Procedure for Blocking the Protection Functions
Indication of Measuring Values
Min./Max.- Values
Reset
7 Relay Testing and Commissioning
Power-On
Testing the Output Relays
Checking the Set Values
Secondary Injection Test
Test Equipment
Example of Test Circuit
Checking the Input Circuits and Measuring Functions
Checking the Operating and Reset-Ting Values of the Over/Undervoltage Functions
Checking the Relay Operating Time of the Over/Undervoltage Functions
Checking the Operating and Reset-Ting Values of the Over/Underfrequency Functions
Checking the Relay Operating Time of the Over/Underfrequency Functions
Checking the Vector Surge Function
Checking the External Blocking and Reset Functions
Primary Injection Test
Maintenance
8 Technical Data
Measuring Input Circuits
Common Data
Setting Ranges and Steps
Output Relays
Power Supply
Inputs, Blockage and Reset
System Data and Test Specifications
Relay Case
9 Order Form
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XRN2 – Mains decoupling relay
Manual XRN2 (Revision D)
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