Siemens Argus 7SR21, Installation Manual

Page 1: ...sult of negligence or any other cause Any and all such liability is disclaimed 2010 Siemens Protection Devices Limited Chapter 5 Page 1 of 22 7SR21 Non Directional 7SR22 Directional Overcurrent Relay Document Release History This document is issue 2010 05 The list of revisions up to and including this issue is 2010 05 Additional Comms modules option of RS485 IRIG B and RS232 IRIG B and typographic...

Page 2: ...8 Case 10 4 3 E8 Case 11 Section 5 Connection Wiring Diagrams 12 5 1 Wiring Diagram 7SR21 OC EF Relay 12 5 2 Wiring Diagram 7SR22 Directional OC EF Relay 13 Section 6 Data Comms Connections 14 6 1 Standard RS485 Connections 14 6 2 IRIG B Connections 14 6 3 Additional Optional Fibre Optic Connections 15 6 4 Additional Optional RS485 Connections 16 6 5 Additional Optional RS232 Connections 16 Sectio...

Page 3: ...e 4 3 1 E8 Standard Additional Comms IRIG B RS485 See Note 2 11 Figure 4 3 2 E8 Standard Additional Comms IRIG B RS232 11 Figure 5 1 1 Connection Diagram for 7SR21 Relay 12 Figure 5 2 1 Connection Diagram for 7SR22 Relay 13 Figure 6 1 1 RS485 Data Comms Connections Between Relays 14 Figure 6 3 1 Data Comms to Multiple Devices Using 7SG24 and F O Star Network 15 Figure 6 3 2 Data Comms to Multiple ...

Page 4: ...he relay uses a liquid crystal display LCD which is used in the programming and for operation The LCD has a vertical viewing angle of 30 and is back lit However the best viewing position is at eye level and this is particularly important given its control features The relay should be mounted on the circuit breaker or protection panel to allow the operator the best access to the relay functions 1 3...

Page 5: ...tted to relays these may present a danger of electric shock or burns if touched 2 3 Fibre Optic Communication Where fibre optic communication devices are fitted these should not be viewed directly Optical power meters should be used to determine the operation or signal level of the device 2 4 Front Cover The front cover provides additional securing of the relay element within the case The relay co...

Page 6: ...e E6 or E8 The following drawing is available which gives panel cut out and mounting details Figure 3 1 1 Overall Dimensions mm and panel Drilling for Size E6 Epsilon case Typically 4 2 kg Figure 3 1 2 Overall Dimensions mm and Panel Drilling for Size E8 Epsilon Case Typically 5 3 kg 2010 Siemens Protection Devices Limited Chapter 5 Page 6 of 22 ...

Page 7: ...crimps with 90 bend are recommended 3 2 2 Panel Fixings Typical mounting screw kit per Relay Consists of 4 off M4x10mm Screws 4 off M4 Nuts 4 off M4 Lock Washer Typical rear terminal block fixing kit 1kit per terminal block fitted to relay Consists of 28 x M4 8mm Screws 28 x M4 Lock Washer 3 2 3 Fibre Optic Connectors The relay has Fibre Optic ST TM BFOC 2 5 bayonet connectors fitted when specifie...

Page 8: ...ST Connectors Notes 1 Recommended terminations are pre insulated must be crimped using approved tooling 2 RS485 block B terms 14 16 18 20 connections to this communication facility is by screened twisted pair cable On site when wiring other facilities ensure that these terminals are not obscured by other wiring runs Cable should be RS485 compliant 2010 Siemens Protection Devices Limited Chapter 5 ...

Page 9: ...22 Argus Installation Guide Figure 4 1 3 E6 Standard Additional Comms IRIG B RS485 See Note 2 Figure 4 1 4 E6 Standard Additional Comms IRIG B RS232 2010 Siemens Protection Devices Limited Chapter 5 Page 9 of 22 ...

Page 10: ...2 2 E8 Standard Additional Comms IRIG B 2 x F O ST Connectors Notes 1 Recommended terminations are pre insulated must be crimped using approved tooling 2 RS485 block B terms 14 16 18 20 connections to this communication facility is by screened twisted pair cable On site when wiring other facilities ensure that these terminals are not obscured by other wiring runs Cable should be RS485 compliant ...

Page 11: ...ended terminations are pre insulated must be crimped using approved tooling 2 RS485 block B terms 14 16 18 20 connections to this communication facility is by screened twisted pair cable On site when wiring other facilities ensure that these terminals are not obscured by other wiring runs Cable should be RS485 compliant 2010 Siemens Protection Devices Limited Chapter 5 Page 11 of 22 ...

Page 12: ...2 Argus Installation Guide Section 5 Connection Wiring Diagrams 5 1 Wiring Diagram 7SR21 OC EF Relay Figure 5 1 1 Connection Diagram for 7SR21 Relay 2010 Siemens Protection Devices Limited Chapter 5 Page 12 of 22 ...

Page 13: ...BO 7 3 1 BO 8 7 5 BO 9 11 9 BI 7 ve 12 BI 8 ve 14 BI 9 ve ve 16 18 BI 10 20 BI 11 ve 22 BI 12 ve 24 BI 13 ve ve 26 28 ve BO 10 15 13 21 19 17 BO 11 BO 12 27 25 23 BO 13 BO 14 1A 5A 1A 5A IL2 IB 1A 5A IL3 IC 1A 5A I4 IG 15 16 11 12 1A 5A I5 ISEF 3 4 7 8 A Analogue B PSU C Optional I O 1 2 27 28 1 2 1 2 27 28 27 28 Data Comms Optional Rear View Arrangement of terminals and modules B C A Screen B Ter...

Page 14: ...85 bus The RS485 data communications link with a particular relay will be broken if the relay element is withdrawn from the case all other relays will still communicate A RS485 Screen B Term 14 16 18 20 RS 485 Twisted pair screened Cable To Control System To Control System 14 16 18 20 RS485 Screened twisted pair Rear terminals 14 16 18 14 16 18 RS485 Screened twisted pair Rear terminals Ext Wire l...

Page 15: ...s bend radii comply with the recommended minimum for the fibre used typically 50mm is acceptable Figure 6 3 1 Data Comms to Multiple Devices Using 7SG24 and F O Star Network Figure 6 3 2 Data Comms to Multiple Devices Using 7SG24 and F O Ring Network The F O data communications link with a particular relay will be broken if the relay element is withdrawn from the case all other relays will still c...

Page 16: ...air screened Cable To Control System To Control System 14 16 18 20 RS485 Screened twisted pair Rear terminals 14 16 18 14 16 18 RS485 Screened twisted pair Rear terminals Ext Wire loop to Include line terminating Res A RS485 Screen B Term 14 16 18 20 A RS485 Screen B Term 14 16 18 20 Figure 6 4 1 RS485 Data Comms Connections Between Relays 6 5 Additional Optional RS232 Connections The additional o...

Page 17: ... Installation Guide Section 7 Connection Diagrams 7 1 Typical Connection 7SR22 Directional OC EF and REF Figure 7 1 1 7SR22 Applied to Transformer Incomer 2010 Siemens Protection Devices Limited Chapter 5 Page 17 of 22 ...

Page 18: ...s Installation Guide 7 2 Typical Connection 7SR22 Directional OC EF and NVD Figure 7 2 1 7SR22 Applied to Transformer Incomer Including HV NVD Protection 2010 Siemens Protection Devices Limited Chapter 5 Page 18 of 22 ...

Page 19: ...nnections are typical only 3 Application shows use of V4 as an NVD input 4 Star Connected VT Phase Voltage Config Van Vbn Vcn IL1 IA 1 2 5 6 9 10 13 14 A 17 18 19 20 21 22 23 24 25 26 27 28 1A 5A 1A 5A 1A 5A 1A 5A 15 16 11 12 1A 5A 3 4 7 8 B C V4 VX VL3 VC VL2 VB VL1 VA IL2 IB IL3 IC I4 IG I5 ISEF Figure 7 3 1 7SR22 Applied to Feeder Including NVD Protection 2010 Siemens Protection Devices Limited...

Page 20: ... 26 27 28 1A 5A 1A 5A 1A 5A 1A 5A 15 16 11 12 1A 5A 3 4 7 8 B C V4 VX VL3 VC VL2 VB VL1 VA IL2 IB IL3 IC I4 IG I5 ISEF NOTES 1 CT circuits are shown connected to 1A tap use alternative tap for 5A rated CTs 2 CT and Earth connections are typical only 3 Voltage Config Vab Vbc 3V0 Figure 7 4 1 7SR22 Applied to Feeder 2010 Siemens Protection Devices Limited Chapter 5 Page 20 of 22 ...

Page 21: ... V4 VX VL3 VC VL2 VB VL1 VA IL2 IB IL3 IC I4 IG I5 ISEF NOTES 1 CT circuits are shown connected to 1A tap use alternative tap for 5A rated CTs 2 CT and Earth connections are typical only 3 Vee Connected VT Phase Voltage Config VA VB VC 4 DEF elements must be NPS polarised Vo polarising not applicable Figure 7 5 1 7SR22 Applied to Feeder No Zero Sequence Voltage Source 2010 Siemens Protection Devic...

Page 22: ...L2 VB VL1 VA IL2 IB IL3 IC I4 IG I5 ISEF NOTES 1 CT circuits are shown connected to 1A tap use alternative tap for 5A rated CTs 2 CT and Earth connections are typical only 3 Vee Connected VT Phase Voltage Config Va Vb Vc 4 DEF elements must be NPS polarised Vo polarising not applicable 5 V4 used for NVD input Capacitor Cones Adaptor Unit Figure 7 6 1 7SR22 Applied to Feeder with Capacitor Cones Fi...