User Manuals: Seg MRF3 Frequency Relay

User Manuals: Seg MRF3 Frequency Relay

Manuals and User Guides for Seg MRF3 Frequency Relay. We have 1 Seg MRF3 Frequency Relay manual available for free PDF download: Manual

Seg MRF3 Manual

Seg MRF3 Manual (32 pages)

Brand: Seg | Category: Relays | Size: 0 MB

Table of Contents

Table of Contents
2
Introduction and Application
3
Features and Characteristics
3
Design
4
Connections
4
Analog Input Circuits
5
Output Relays
5
Blocking Input
5
External Reset Input
5
Fault Recorder
6
Parameter Settings
7
Leds
8
Working Principle
9
Analog Circuits
9
Digital Part
9
Principle of Frequency Supervision
9
Measurement of the Frequency Gradient
10
Load Shedding
10
Operation and Settings
12
Display
12
Setting Procedure
14
System Parameter
14
Display of Voltage U as Primary Quantity
14
Prim Sek
14
Setting of Nominal Frequency
14
Display of the Activation Storage (FLSH/NOFL)
14
Protection Parameters
14
Parameter Switch
14
Number of Measuring Repetitions(T)
15
Threshold of Frequency Supervision
15
Tripping Delays for the Frequency Elements
15
Disengaging Value for the Frequency Stages
15
Reclaim Time Upon Mains Stabilisation
15
Parameter for Frequency Gradient Supervision Df/Dt at Load Shedding
16
Parameters for Frequency Gradient
16
Blocking for Frequency Measuring
16
Voltage Threshold for Frequency Measurement
16
Adjustment of the Slave Address
16
Setting of Baud-Rate (Applies for Modbus Protocol Only)
16
Setting of Parity (Applies for Modbus Protocol Only)
17
Parameter for the Fault Recorder
17
Adjustment of the Fault Recorder
17
Type of Fault Recorder
17
Number of the Fault Recordings
17
Adjustment of Trigger Occurences
17
Pre-Trigger Time
17
Date and Time
17
Adjustment of the Clock
17
Additional Functions
18
Setting Procedure for Blocking the Protection Functions
18
Measuring Values
20
Instantaneous Values
20
Tripping Memory
20
Display of Measuring Values
20
Unit of the Measuring Values Displayed
20
Minimum and Maximum Values
20
Fault Memory
20
Reset
21
Dynamic Behaviour of the Relay Functions
22
Relay Testing and Commissioning
23
Power-On
23
Testing the Output Relays
23
Checking the Set Values
23
Secondary Injection Test
24
Test Equipment
24
Test Circuit
24
Checking the Input Circuits and Measuring Values
25
Checking of Operating- and Resetting
25
Values of the Over-/Underfrequency Func
25
Values of the Df/Dt Elements
25
Checking the Tripping Delays
25
Checking the Reclaim Time of the Frequency Stages
25
Checking the External Blocking- and Reset
25
Primary Injection Test
26
Maintenance
26
Technical Data
27
Measuring Input Circuits
27
Common Data
27
Setting Ranges and Steps
28
Order Form
29

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