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Date Code 20081022
Instruction Manual
SEL-787 Relay
List of Figures
STA Command Response—No DeviceNet Communications Card or
STA Command Response—With DeviceNet Communications Card ....................................... 1.6
Pins for Password Jumper and SEL
BOOT
Jumper ................................................................... 2.11
Dual-Fiber, Ethernet, EIA-232 Communication, 3 DI /4 DO/1 AO,
Figure 2.10 Single Copper Ethernet, 8 DI, RTD, and 4 AI/4 AO Option .................................................. 2.14
Figure 2.11 DeviceNet, Fast Hybrid 4 DI/4 DO, and Current/Voltage Option .......................................... 2.14
Figure 2.12 Control I/O Connections—4 AI/4 AO Option in Slot D and Fiber-Optic Port in Slot B........ 2.16
Figure 2.13 Control I/O Connections—Internal RTD Option .................................................................... 2.16
Figure 2.14 Output OUT103 Relay Output Contact Configuration ............................................................ 2.17
Figure 2.15 OUT103 Contact Fail-Safe and Nonfail-Safe Options ............................................................ 2.17
Figure 2.16 Single-Phase Voltage Connections .......................................................................................... 2.18
Figure 2.17 Voltage Connections ................................................................................................................ 2.19
Figure 2.18 Typical Current Connections ................................................................................................... 2.20
Figure 2.19 SEL-787 Provides Basic Two-Winding Transformer Differential Protection......................... 2.21
Figure 2.20 SEL-787 Provides Two-Winding Transformer Differential Protection
Figure 2.21 SEL-787 Provides Two-Winding Transformer Differential Protection
Figure 2.22 SEL-787 Provides Autotransformer Differential Protection, including REF Protection ........ 2.24
Figure 2.23 Example DC Connections ....................................................................................................... 2.25
Figure 3.1
Figure 3.10 Composite Screens for Retrieving Events ............................................................................... 3.11
Figure 3.11 Saving the Retrieved Event ...................................................................................................... 3.12
Figure 3.12 Device Overview Screen.......................................................................................................... 3.13
Figure 3.13 Control Screen ......................................................................................................................... 3.14
Figure 3.14 Remote Operation Selection .................................................................................................... 3.14
Figure 4.1
Summary of Contents for SEL-787
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