Chapter 1) 7SR158 Description of Operation
Chapter 1) Page 4 of 38 ©2014 Siemens Protection Devices Limited
List of Figures
Figure 1-1 VT Connections ................................................................................................................................ 9
Figure 1-2 Connections Diagram for 7SR158 Relay .......................................................................................... 10
Figure 2-1 Relay shown withdrawn .................................................................................................................. 11
Figure 2-2 Rear view of Relay .......................................................................................................................... 12
Figure 2-3 Relay with standard transparent cover ............................................................................................. 12
Figure 2-4 Relay with transparent cover and push buttons ................................................................................ 13
Figure 2-5 Relay with Transparent cover removed ............................................................................................ 14
Figure 2-6 Close up of Relay Label .................................................................................................................. 14
Figure 2-7 Close up of Relay Identifier ............................................................................................................. 15
Figure 2-8 LED Indication Label ....................................................................................................................... 16
Figure 2-9 Binary Input Logic ........................................................................................................................... 17
Figure 2-10 Binary Output Logic ...................................................................................................................... 19
Figure 2-11 Start-up Counter Meter ................................................................................................................. 20
Figure 2-12 Unexpected Restarts Lockout Text ................................................................................................ 20
Figure 2-13 Start-up Events ............................................................................................................................. 21
Figure 3-1 Logic Diagram: Under/Over Voltage Elements (27/59) ..................................................................... 22
Figure 3-2 Logic Diagram: NPS Overvoltage Protection (47) ............................................................................. 23
Figure 3-3 Logic Diagram: Neutral Overvoltage Element (59N) ......................................................................... 24
Figure 3-4 Logic Diagram: Vector Shift (78) ...................................................................................................... 25
Figure 3-5
Logic Diagram: Under/Over Frequency Detector (81) .................................................................. 26
Figure 3-6 Logic Diagram: Rate of Change of Frequency (81R) ........................................................................ 27
Figure 4-1 Sequence Diagram: Quick Logic PU/DO Timers (Counter Reset Mode Off) ...................................... 31
Figure 4-2 Logic Diagram: Trip Circuit Supervision Feature (74TCS) ................................................................. 32
Figure 4-3 Logic Diagram: Close Circuit Supervision Feature (74CCS) ............................................................. 32
List of Tables
Table 1-1
7SR158 Ordering Options ............................................................................................................ 8
Table 2-1
Summary of 7SR158 Relay Configurations ................................................................................. 11
Table 4-1
Operating Mode ......................................................................................................................... 36
Summary of Contents for 7SR158 Argus
Page 1: ...Answers for energy 7SR158 Argus Voltage and Frequency Relay Reyrolle Protection Devices ...
Page 2: ......
Page 4: ...7SR158 Argus Contents ...
Page 211: ......