Manual 37353A
MFR 13 Packages - Protection Relay
Page 6/91
© Woodward
Illustrations and Tables
Illustrations
Figure 3-1: Wiring diagram ..................................................................................................................................................... 11
Figure 3-2: Power supply......................................................................................................................................................... 12
Figure 3-3: Wide range power supply...................................................................................................................................... 12
Figure 3-4: Measuring inputs - voltages .................................................................................................................................. 13
Figure 3-5: Measuring inputs - synchronizing voltage ............................................................................................................ 13
Figure 3-6: Measuring inputs - current .................................................................................................................................... 14
Figure 3-7: Discrete inputs....................................................................................................................................................... 15
Figure 3-8: Relay outputs ........................................................................................................................................................ 16
Figure 3-9: Pulse output........................................................................................................................................................... 16
Figure 3-10: Analog outputs .................................................................................................................................................... 17
Figure 3-11: Interfaces............................................................................................................................................................. 18
Figure 4-1: Direction of power ................................................................................................................................................ 22
Figure 5-1: Front panel ............................................................................................................................................................ 26
Figure 6-1: Diagram for independent time-overcurrent monitoring ........................................................................................ 47
Figure 6-2: Inverse time-overcurrent - characteristic "normal inverse" ................................................................................... 50
Figure 6-3: Inverse time-overcurrent - characteristic "very inverse" ....................................................................................... 51
Figure 6-4: Inverse time-overcurrent - characteristic "extremely inverse" .............................................................................. 51
Figure 7-1: Dimensions............................................................................................................................................................ 70
Figure 7-2: Interface, power factor scaling .............................................................................................................................. 78
Figure 7–3: Interface - Modbus connection ............................................................................................................................. 79
Tables
Table 3-1: Conversion chart - wire size ................................................................................................................................... 12
Table 4-1: Alarm messages...................................................................................................................................................... 25
Table 5-1: Alarm messages...................................................................................................................................................... 30
Table 6-1: Release delay of the relays ..................................................................................................................................... 60
Table 6-2: Protective function output to relay ......................................................................................................................... 62
Table 6-3: Analog outputs, table of values .............................................................................................................................. 64
Table 7-1: Analog outputs, table of values .............................................................................................................................. 85