Auto-Reclose; Instrumentation; Communication Interface; Real Time Clock - Siemens 7SG11 Manual

Attribute
Operating time
Repeatability
Overshoot time
Disengaging time
1.4.6

Auto-reclose

Integrated with the Overcurrent, Low Set, Delay and High Set 1 and High Set 2 elements.
Attribute
Number of reclose shots
Timers
Timer ranges
Time accuracy, all timers
Repeatability
1.4.7

Instrumentation

Voltage, power and power factor instruments are available on Argus 2 type II models only.
Instrument Value
I Current
V Voltage
Power, real and apparent
pf Power factor
1.4.8

Communication Interface

Attribute
Physical layer
Connectors
Recommended fibre
Launch power (into recommended fibre)
Receiver sensitivity
Protocol
'ST' is the registered trade mark of AT&T Co.
1.4.9

Real Time Clock

Attribute
Accuracy
1.5

Environmental Performance

1.5.1

General

1.5.1.1 Temperature
IEC 60068-2-1/2
©2013 Siemens Protection Devices Limited
Value
retrip
t
CBF1
backtrip t
CBF1
1 %
< 40 ms
< 42 ms
Value
up to 4(separate for phase-fault, earth-fault, SEF and external)
Reclose DTL 1, 2, 3, 4; Reclaim time
(separate for phase-fault, earth-fault, SEF and external)
0.20, 0.21...2.0, 2.1...20, 21...300, 360...
3600, 3900...14400 s
setting
1 %
Reference
I 0.1 xIn
V 0.8 xVn
V = Vn, I 0.1 xIn, pf
V = Vn, I 0.1 xIn, pf
Value
Fibre-optic (option EIA RS-485)
ST
62.5/125 m glass fibre with ST
-16 dBm
-24 dBm
IEC 60870-5-103 or MODBUS RTU
Value
50 ppm (equivalent to
, 1 % or 10 ms
+ t , 1 % or 10 ms
CBF2
10 ms
1 % or 10 ms
Typical accuracy
1 % In
1 % Vn
0.8
0.8
TM
(BFOC/2.5) (RS-485 electrical 4mm terminal)
180 ms per hour)
7SG11 Argus Technical Reference
Claimed accuracy
3 % In
3 % Vn
3 % Pn, where Pn =
Vn x In
0.05
TM
connector
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