7SG11 Argus Technical Reference
©2013 Siemens Protection Devices Limited
P20007 Page 9 of 71
The status inputs with nominal voltage of 30 V to 54 V meet the requirements of ESI 48-4 ESI 1.
Low Burden Status Inputs
Optionally, low burden status inputs are available directly rated for 110/125Vd.c. or 220/250Vd.c. without dropper
resistors. These inputs do not meet the ESI 48-4 ESI 1 requirements. Where necessary a single external dropper
resistor in parallel can be fitted to meet ESI 48-4 ESI 1 requirements.
Low Burden Status Input performance
Nominal
Operating Range
Typical burden
110, 125
87.5 to 137.5 V DC
1.75 mA to 3.0 mA
220, 250
175 to 280 V DC
1.75 mA to 3.0 mA
110/125 V minimum pick-up voltage typically 50 – 60 V d.c.
220/250 V minimum pick-up voltage typically 100 – 120 V d.c.
1.3 Output Contacts
Contact rating to IEC 60255-0-20
Attribute
Value
Carry continuously
5 A AC or DC
for 0.5 s
20 A AC or DC
Make and carry
(L/R 40 ms and V 300 V)
for 0.2 s
30 A AC or DC
AC resistive
1250 VA
AC inductive
250 VA at p.f. 0.4
DC
resistive
75
W
Break
( 5 A and 300 V)
DC inductive
30 W at L/R 40ms
50 W at L/R 10ms
Minimum number of operations
1000 at maximum load
Minimum recommended load
0.5 W at minimum of 10mA or 5V
1.4 Functional Performance
1.4.1 Phase-fault Overcurrent Protection
A time-delayed characteristic (IDMTL, DTL) and 3 instantaneous/DTL characteristics (Lowset, Highset 1 and
Highset 2) are provided.
1.4.1.1
Time Delayed Characteristic
Operate Level
Attribute
Value
Is
Setting range
0.05, 0.1…2.50 x
In
I
op
Operate level
105 %
Is
, 4% or 1 % In
Reset level
95 %
I
op
5% or 1 % In
Repeatability
5 %
-10 °C to +55 °C
5 %
Variation
47 Hz to 52 Hz
57 Hz to 62 Hz
harmonics to 550 Hz
5 %
Operate Time
Attribute
Value
Starter operate time
See Figure 1.5-2, 5 ms
char
Characteristic setting range
NI (IEC type A), VI (IEC type B), EI (IEC type C), LTI, DTL