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MRN3-2
Woodward MRN3-2 Manuals
Manuals and User Guides for Woodward MRN3-2. We have
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Woodward MRN3-2 manual available for free PDF download: Manual
Woodward MRN3-2 Manual (50 pages)
Mains decoupling relay
Brand:
Woodward
| Category:
Relays
| Size: 0 MB
Table of Contents
Table of Contents
3
1 Introduction and Application
5
2 Features and Characteristics
6
3 Design
7
Connections
7
Analog Input Circuits
7
Blocking Input
7
Reset Input
7
Output Relays
8
Fault Recorder
8
Parameter Settings
10
Leds
11
Front Plate
12
4 Working Principle
13
Analog Circuits
13
Digital Circuits
13
Voltage Supervision
13
Selection of Star or Delta Connection
14
Principle of Frequency Supervision
15
Measuring of Frequency Gradient (MRN3-2)
15
Vector Surge Supervision (MRN3-1)
16
Measuring Principle of Vector Surge Supervision
17
Voltage Threshold Value for Frequency Measuring
21
Blocking Function
21
5 Operation and Setting
22
Display
22
Setting Procedure
23
System Parameter
24
E as Primary Quantity
24
Display of Residual Voltage U as Primary Quantity
24
Prim /U Sec )
24
Setting of Nominal Frequency
24
Display of the Activation Storage (FLSH/NOFL)
25
Parameter Switch/External Trigger for the Fault Recorder
25
Protection Parameters
27
Parameter Setting of Over- and under Voltage Supervision
27
Number of Measuring Repetitions (T) for Frequency Functions
27
Threshold of Frequency Supervision
27
Tripping Delays for the Frequency Elements
28
Parameter Setting of Vector Surge Supervision (MRN3-1)
28
Parameter Setting of Frequency Gradient (MRN3-2)
29
Voltage Threshold Value for Frequency and Vector Surge Measuring (Df/Dt at MRN3-2)
29
Adjustment of the Slave Address
29
Setting of Baud-Rate (Applies for Modbus Protocol Only)
29
Setting of Parity (Applies for Modbus Protocol Only)
29
Adjustment of the Fault Recorder
30
Number of the Fault Recordings
30
Adjustment of Trigger Occurrences
30
Pre-Trigger Time (T )
30
Adjustment of the Clock
30
Additional Functions
31
Setting Procedure for Blocking the Protection Functions
31
Indication of Measuring Values
33
Measuring Indication
33
Min./Max.- Values
33
Unit of the Measuring Values Displayed
34
Indication of Fault Data
34
Fault Memory
34
Reset
35
Erasure of Fault Storage
35
6 Relay Testing and Commissioning
36
Power-On
36
Testing the Output Relays
36
Checking the Set Values
37
Secondary Injection Test
37
Test Equipment
37
Example of Test Circuit
38
Checking the Input Circuits and Measuring Functions
39
Checking the Operating and Resetting Values of the Over/Under Voltage Functions
39
Checking the Relay Operating Time of the Over/Undervoltage Functions
39
Checking the Operating and Resetting Values of the Over/Under Frequency Functions
40
Checking the Relay Operating Time of the Over/Underfrequency Functions
40
Checking the Vector Surge Function
40
Checking the External Blocking and Reset Functions
41
Primary Injection Test
42
Maintenance
42
7 Technical Data
43
Measuring Input Circuits
43
Common Data
43
Setting Ranges and Steps
44
Interface Parameter
45
Parameters for the Fault Recorder
45
Output Relays
45
8 Order Form
46
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