Seg MRN3 Mains Decoupling Relay Manuals

Seg MRN3 Mains Decoupling Relay Manuals

Manuals and User Guides for Seg MRN3 Mains Decoupling Relay. We have 1 Seg MRN3 Mains Decoupling Relay manual available for free PDF download: Manual

Seg MRN3 Manual

Seg MRN3 Manual (40 pages)

Mains decoupling relay

Brand: Seg | Category: Relays | Size: 1 MB

Table of Contents

Table of Contents
2
Introduction and Application
4
Features and Characteristics
4
Design
5
Connections
5
Analog Input Circuits
5
Blocking Input
5
Reset Input
5
Output Relays
5
Fault Recorder
6
Parameter Settings
7
Leds
8
Front Plate
8
Working Principle
9
Analog Circuits
9
Digital Circuits
9
Voltage Supervision
9
Selection of Star or Delta Connection
10
Principle of Frequency Supervision
10
Measuring of Frequency Gradient (MRN3-2)
10
Vector Surge Supervision (MRN3-1)
11
Measuring Principle of Vector Surge Supervision
12
Voltage Threshold Value for Frequency
15
Blocking Function
15
Operation and Setting
16
Display
16
Setting Procedure
18
Systemparameter
18
Display of Residual Voltage U
18
As Primary
18
Prim Sec
18
Y - Switch over
18
Setting of Nominal Frequency
19
Display of the Activation Storage (FLSH/NOFL)
20
Parameterswitch/External Trigger for the Fault Recorder
20
Protection Parameters
21
Parameter Setting of Over- and Undervoltage Supervision
21
Number of Measuring Repetitions (T) for Frequency Functions
21
Threshold of Frequency Supervision
21
Tripping Delays for the Frequency Elements
21
Parameter Setting of Vector Surge Supervision (MRN3-1)
22
Relay Testing and Commissioning
28
Testing the Output Relays
28
Checking the Set Values
28
Secondary Injection Test
29
Test Equipment
29
Example of Test Circuit
29
Checking the Input Circuits and Measuring Functions
30
Checking the Relay Operating Time of the Over/Undervoltage Functions
30
Checking the Relay Operating Time of the Over/Underfrequency Functions
31
Checking the Vector Surge Function
31
Checking the External Blocking and Reset Functions
32
Primary Injection Test
32
Maintenance
32
Technical Data
33
Measuring Input Circuits
33
Common Data
33
Setting Ranges and Steps
34
Interface Parameter
35
Parameters for the Fault Recorder
35
Output Relays
35
Order Form
36

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