Schweitzer Engineering Laboratories SEL-787 - Overview

Date Code 20081022 Instruction Manual SEL-787 Relay
List of Figures
Instructi on Manual
Figure 1.1 Response Header........................................................................................................................ 1.5
Figure 1.2 STA Command Response—No DeviceNet Communications Card or
With EIA-232/EIA-485 Communications Card.................................................................... 1.6
Figure 1.3 STA Command Response—With DeviceNet Communications Card ....................................... 1.6
Figure 2.1 Relay Panel-Mount Dimensions................................................................................................ 2.2
Figure 2.2 Slot Allocations for Different Cards.......................................................................................... 2.3
Figure 2.3 Circuit Board of Analog I/O Board, Showing Jumper Selection............................................... 2.9
Figure 2.4 JMP1 Through JMP4 Locations on 4 AI/4 AO Board............................................................. 2.10
Figure 2.5 Current Output Jumpers........................................................................................................... 2.10
Figure 2.6 Voltage Output Jumpers ........................................................................................................... 2.10
Figure 2.7 Pins for Password Jumper and SEL
BOOT Jumper ................................................................... 2.11
Figure 2.8 Rear-Panel Connections of Selected Cards ............................................................................. 2.12
Figure 2.9 Dual-Fiber, Ethernet, EIA-232 Communication, 3 DI/4 DO/1 AO,
and Current/Voltage (1 ACI/3 AVI) Option ........................................................................ 2.13
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
With REF (Restricted Earth Fault) Protection .................................................................... 2.22
Figure 2.21 SEL-787 Provides Two-Winding Transformer Differential Protection
With REF and Voltage-Based Protection ............................................................................ 2.23
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 Serial Port Communication Dialog Box .................................................................................... 3.2
Figure 3.2 Serial Port Communication Parameters Dialog Box ................................................................. 3.2
Figure 3.3 Network Communication Parameters Dialog Box .................................................................... 3.3
Figure 3.4 Tools Menu ................................................................................................................................ 3.3
Figure 3.5 Device Response to the ID Command ....................................................................................... 3.4
Figure 3.6 Selection of Drivers ................................................................................................................... 3.7
Figure 3.7 Update Part Number .................................................................................................................. 3.7
Figure 3.8 New Setting Screen.................................................................................................................... 3.8
Figure 3.9 Expressions Created With Expression Builder .......................................................................... 3.9
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 Percentage Restraint Differential Characteristic........................................................................ 4.6
Figure 4.2 Winding 1 Compensated Currents............................................................................................. 4.7
Figure 4.3 Differential Element (87-1) Quantities ...................................................................................... 4.7
Figure 4.4 Differential Element Decision Logic......................................................................................... 4.9
Figure 4.5 Differential Element Harmonic Blocking Logic ..................................................................... 4.10
Figure 4.6 Differential Current Alarm Logic Diagram ............................................................................. 4.11
Figure 4.7 Winding Connections, Phase Shifts, and Compensation Direction......................................... 4.16