Siemens Argus 7SR12 User Manual

7SR11 & 7SR12 Description Of Operation
©2012 Siemens Protection Devices Limited Chapter 1 Page 8 of 76
Table 1-1 7SR11 Ordering Options
Nondirectional O/C Relay 7
S
R
1
1
0
□
-
□
□
A
1
2 - □
□
A
0
▲
▲
▲
▲
▲
▲
▲
▲ ▲
Overcurrent
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and earth fault
protection
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relay Protection Product
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Overcurrent – Non Directional
1
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Case I/O and Fascia
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E4 case, 1 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 1
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| | C |
E4 case, 4 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 2
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E4 case, 4 CT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs 3
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| | C/D
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Measuring Input
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1/5 A, 50/60Hz
1)
1
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1/5 A, 50/60Hz with SEF Input
2)
3
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| | C/D
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Auxiliary voltage
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80 to 250V DC, 115V RMS AC, binary input threshold 19V DC
6)
G
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80 to 250V DC, binary input threshold 88V DC
H
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24 to 60V DC, binary input threshold 19V DC
J
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Communication Interface
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Standard version – included in all models, USB front port,
RS485 rear port
1
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Protocol
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IEC 60870-5-103 and Modbus RTU and DNP3 (user selectable setting) 2 | | |
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Relay Cover
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Standard Version – No Push Buttons
1 | |
Push Buttons – Down and Right Arrows
2 | |
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Protection Function Packages
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Basic version
5)
– included in all models
46BC
3)
Broken conductor/load unbalance
50
3)
Instantaneous phase fault overcurrent
50BF
3)
Circuit breaker fail
50G/50N Instantaneous earth fault
51
3)
Time delayed phase fault overcurrent
51G/51N Time delayed earth fault/SEF
60CTS-1
3)
CT Supervision
64H High Impedance REF
74T/CC Trip/Close circuit supervision
86 Hand reset contacts
A
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Standard version – as basic plus
37 Undercurrent
46NPS
3)
Negative phase sequence overcurrent
49
3)
Thermal overload
50SEF
2)
Instantaneous sensitive earth fault
51SEF
2)
Time delayed sensitive earth fault
81HBL2
4)
2
nd
Harmonic Block/Inrush Restraint
51c
3)
Cold load pickup
Programmable logic
C
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Standard version – plus
79 Autoreclose
D |
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Additional Functionality
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No Additional Functionality
A
1) 4CT is configured as 3PF + EF.
2) 4CT is configured as 3PF + SEF.
3) Functions only available in 4CT relay
4) Not available on single-pole SEF variant
5) Protection function package ordering option A is only available on hardware variant 7SR1102-1xA12-xAA0 – 4CT 3BI 5BO
6) AC Auxiliary voltage option not available on hardware versions earlier than /CC

Siemens Argus 7SR12 Specifications

General

Brand	Siemens
Model	Argus 7SR12
Category	Relays
Language	English