Manual WIP1 GB
Woodward
DOK-TD-WIP1 Rev.F
3
Contents
1.
Comments on the manual ........................................................................................ 5
1.1
Information Concerning Liability and Warranty.................................................................................. 5
1.2
IMPORTANT DEFINITIONS .............................................................................................................. 6
1.3
Electrostatic Discharge Awareness ................................................................................................... 7
2.
General ...................................................................................................................... 8
3.
Characteristics and Features ................................................................................... 9
4.
Design ...................................................................................................................... 10
4.1
Connections ..................................................................................................................................... 10
4.1.1
Connecting the serial Interface .................................................................................................... 14
4.1.2
Analog inputs ............................................................................................................................... 15
4.1.3
Control inputs ............................................................................................................................... 15
4.1.4
Operation outputs ........................................................................................................................ 16
4.1.5
Battery .......................................................................................................................................... 17
4.1.6
Trip indication .............................................................................................................................. 17
4.1.7
Serial Interface ............................................................................................................................. 17
5.
Working Principle ................................................................................................... 18
5.1
Analog circuits ................................................................................................................................. 18
5.2
Digital circuits ................................................................................................................................... 18
5.3
Battery buffer ................................................................................................................................... 19
5.3.1
Additional power part ................................................................................................................... 19
5.3.2
Transformer Power Supply .......................................................................................................... 19
5.3.3
Important note for the battery function ......................................................................................... 19
5.4
Indicating and operating elements ................................................................................................... 20
5.4.1
Front plate .................................................................................................................................... 20
5.4.2
Display ......................................................................................................................................... 20
5.4.3
LED .............................................................................................................................................. 20
5.5
Function push buttons ..................................................................................................................... 20
5.6
Opening the front cover ................................................................................................................... 21
5.7
Requirements for the main C.T.s ..................................................................................................... 22
5.7.1
Determining the maximum coil resistance ................................................................................... 22
5.7.2
Characteristics of the current transformers ................................................................................. 23
5.7.3
Overloading of the WIP1 .............................................................................................................. 25
5.7.4
Dimensioning example ................................................................................................................ 26
6.
Operations and settings ......................................................................................... 28
6.1
Function of push buttons ................................................................................................................. 29
6.1.1
Measuring value and fault indication ........................................................................................... 29
6.1.2
Display ......................................................................................................................................... 30
6.1.3
Setting procedure ........................................................................................................................ 30
6.1.4
Parameter setting by using the password ................................................................................... 30
6.2
Display of measuring values ............................................................................................................ 31
6.3
Displaying the pickup phase ............................................................................................................ 32
6.4
Display of tripping values ................................................................................................................. 32
6.5
Protection parameters ..................................................................................................................... 34
6.5.1
Pickup value for phase overcurrent element ............................................................................... 34
6.5.2
Time current characteristics for phase overcurrent element ....................................................... 34
6.5.3
Trip delay or time multiplier for phase overcurrent element ........................................................ 34
6.5.4
Reset mode for inverse time tripping characteristics for phase overcurrent element ................. 35
6.5.5
Minimal time ................................................................................................................................. 35
6.5.6
Current setting for high set element ............................................................................................ 35
6.5.7
Trip delay for high set element .................................................................................................... 35
6.5.8
Pickup value for earth fault current element ................................................................................ 36
6.5.9
Tripping characteristic for earth fault current element ................................................................. 36
6.5.10
Trip delay or time multiplier for earth fault overcurrent element .............................................. 36
6.5.11
Reset mode for normal inverse time tripping characteristics for earth fault element .............. 36
6.5.12
Minimum tripping time (earth fault element) ............................................................................ 36
6.5.13
Current setting for earth fault high set element ....................................................................... 36
