7SR11 & 7SR12 Description Of Operation
ยฉ2017 Siemens Protection Devices Limited Chapter 1 Page 9 of 88
Table 1-1 7SR11 Ordering Options
Nondirectional O/C Relay (Argus)
Overcurrent and earth fault
Overcurrent โ
Non Directional
1 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs
4 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs
4 CT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs
4 CT, 4 Binary Inputs / 8 Binary Outputs, 10 LEDs
8)
1/5 A, 50/60Hz with SEF Input
2)
PSU Rated: 80-250V DC / 115V AC
6)
. Binary input threshold 19V DC (Rated: 24-250V DC / 115V AC)
PSU Rated: 80-250V DC. Binary input threshold 88V DC (Rated: 110-250V DC)
PSU Rated: 24-60V DC. Binary input threshold 19V DC (Rated: 24
-250V DC)
PSU Rated: 24
-250V DC / 100
-230V AC. BI threshold 19V DC (Rated: 24-250V DC / 100-120V AC)
PSU Rated: 24-250V DC / 100-230V AC. BI threshold 88V DC (Rated: 110-250V DC)
Standard version
โ included in all models, USB front port, RS485 rear port (E4 Case)
Standard version โ plus additional rear electrical Ethernet RJ45 (x2), E6 Case
7)
Standard version
โ plus additional rear optical Ethernet duplex (x2), E6 Case
7 )
IEC 60870-5-103 Modbus RTU and DNP3 (user selectable)
IEC 60870-5-103 Modbus RTU, DNP3 and IEC 61850 (user selectable settings)
7)
Standard Version โ No Push Buttons
Push Buttons โ Down and Right Arrows
Protection Function Packages
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
74T&C Trip & Close circuit supervision
46BC
3)
Broken conductor/load unbalance
46NPS
3)
Negative phase sequence overcurrent
50
3)
Instantaneous phase fault overcurrent
50AFD
Arc Flash Detection
50BF
3)
Circuit breaker fail
50G/50N Instantaneous earth fault
50SEF
2)
Instantaneous sensitive earth fault
51
3)
Time delayed phase fault overcurrent
51G/51N Time delayed earth fault
51SEF
2)
Time delayed sensitive earth fault
74T/CC Trip and Close circuit supervision
81HBL2
4)
2
nd
harmonic block/inrush restraint