Schweitzer Engineering Laboratories SEL-751 - Page 15

Date Code 20170927 Instruction Manual SEL-751 Relay
List of Figures
R.Instruct ion Manual
Figure 1.1 SEL-751 Feeder Protection Relay Applied Throughout the Power System .......................... 1.8
Figure 1.2 Typical Current Connections.................................................................................................. 1.9
Figure 1.3 Response Header.................................................................................................................. 1.10
Figure 1.4 STA Command Response—No Communications Card or EIA-232/EIA-485
Communications Card ...................................................................................................... 1.11
Figure 1.5 STA Command Response—Communications Card/DeviceNet Protocol............................ 1.11
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......................................... 2.17
Figure 2.4 JMP1 Through JMP4 Locations on 4 AI/4 AO Board......................................................... 2.17
Figure 2.5 Current Output Jumpers ....................................................................................................... 2.17
Figure 2.6 Voltage Output Jumpers ....................................................................................................... 2.17
Figure 2.7 Pins for Password, Breaker Control, and SEL
BOOT Jumper................................................ 2.18
Figure 2.8 Dual Fiber Ethernet With 2 AVI/4 AFDI Voltage Option With Arc-Flash
Detector Inputs, DeviceNet Card, and Fast Hybrid 4 DI/4 DO Card
(Relay MOT 751501AA3CA70850830) .......................................................................... 2.19
Figure 2.9 Single Copper Ethernet, EIA-485 Communication, 8 DO (Form A) Card,
4 AI/4 AO Card, and 2 AVI/4 AFDI Voltage Option With Arc-Flash Detector Inputs
(Relay MOT 751201A2A6X70810320)........................................................................... 2.20
Figure 2.10 Single Copper Ethernet With EIA-232 Communication, 10 RTD Card, 4 DI/4 DO Card
and 2 AVI/4 AFDI Voltage Option Card With Arc-Flash Detector Inputs
(Relay MOT 751501A1A9X70850230)........................................................................... 2.20
Figure 2.11 No Ethernet, EIA-232 Serial Communications, EIA-232/EIA-485 Communications
Card, 8 DI Card, and 8 DO Card (Form A) (Relay MOT 751401AA03A2A850000)..... 2.21
Figure 2.12 Dual Copper Ethernet, 4 DI/4 DO Card, 14 DI Card, 8 AFDI With Arc-Flash Detector
Inputs, 4 ACI/3 AVI Card With 5 A Phase, 200 mA Neutral, and Three-Phase
AC Voltage Inputs (300 Vac) (Relay MOT 7515S1A1A4A77870671) ........................... 2.21
Figure 2.13 Dual Copper Ethernet, 14 DI Card, 8 DO (Form B) Card, 2 AVI/4 AFDI Card
With LEA Vsync, Vbat Inputs, and 4 Arc-Flash Detection Inputs, 4 ACI/3 AVI Card
With 5 A Phase, 200 mA Neutral, and Three-Phase LEA Voltage Inputs (8 Vac)
(Relay MOT 751501A4A2BL0L70671) .......................................................................... 2.22
Figure 2.14 Dual 10/100 Base-T Ethernet, EIA-232 Rear Port, Without Single Multimode
ST Fiber-Optic Serial Port Rear, With DeviceNet Card, Fast Hybrid 4 DI/4 DO Card,
8 DI Card and 4 ACI Card (No Voltage Inputs)
(Relay MOT 751001AA3CA3AA50F30) ........................................................................ 2.22
Figure 2.15 Control I/O Connections—4 AI/4 AO Option in Slot D and Fiber-Optic Port in Slot B..... 2.25
Figure 2.16 Control I/O Connections—Internal RTD Option in Slot D.................................................. 2.25
Figure 2.17 Analog Output Wiring Example........................................................................................... 2.26
Figure 2.18 Output OUT103 Relay Output Contact Configuration ........................................................ 2.26
Figure 2.19 OUT103 Contact Fail-Safe and Nonfail-Safe Options......................................................... 2.27
Figure 2.20 Single-Phase Voltage Connections....................................................................................... 2.28
Figure 2.21 Voltage Connections............................................................................................................. 2.29
Figure 2.22 Typical Current Connections................................................................................................ 2.31
Figure 2.23 SEL-751 Provides Overcurrent Protection and Reclosing for a Distribution Feeder
(Includes Fast Bus Trip Scheme) (Delta-Connected PTs)................................................ 2.32
Figure 2.24 SEL-751 Provides Overcurrent Protection for a Distribution Bus
(Includes Fast Bus Trip Scheme) (Wye-Connected PTs) ................................................. 2.33
Figure 2.25 Transmission Line Directional Overcurrent Protection and Reclosing
With Current-Polarization Source Connected to Channel IN (Wye-Connected PTs)...... 2.34
Figure 2.26 SEL-751 Provides Overcurrent Protection for a Delta-Wye Transformer Bank
(Wye-Connected PTs)....................................................................................................... 2.35