Circuit Breaker Fail - Siemens 7SG11 Manual

Operate Angle
Attribute
Angle setting
s
Characteristic
CA angle (I with
respect to V)
Operating angle
Variation in
characteristic
angle
Note. Some models are available in which the -65 setting is replaced by a -90 setting.
Operate Threshold
Attribute
Minimum levels for
operation
Operate Time
Attribute
Operate time
Reset time
See Figure 1.5-7.
1.4.5

Circuit Breaker Fail

Operate Level
Attribute
Is Phase Fault setting
Is Earth Fault Setting
Is SEF Setting
Iop Operate Level
Reset Level
Repeatability
Variation
Operate Time
Attribute
t ,
CBF1
Delay setting (retrip, backtrip)
t
CBF2
©2013 Siemens Protection Devices Limited
Value
type I:
Phase-fault
type II: -90, -89...0, +1...+90
type I:
Earth-fault
type II: -90, -89...0, +1...+90
type I at 50 Hz,
,
s
type II
Phase-fault: +25
type I at 60 Hz
Earth-fault:
forward CA - 87.5
reverse (CA - 180 ) - 87.5
10°C to +55°C 5
47 Hz to 52 Hz type I:
57 Hz to 62 Hz
type II:
Value
I > 5 % In
V (p/f) > 2 V
V (e/f) > 3.3 V
Value
type I:
type II: typically 40 ms at characteristic angle
type I:
type II: typically 40 ms at characteristic angle
Value
Off, 0.05, 0.1 ... 1.0 xIn
Off, 0.05, 0.1 ... 1.0 xIn
Off, 0.05, 0.1 ... 1.0 xIn
100 % Is
95 % I
1 %
47 Hz to 52 Hz
57 Hz to 62 Hz
5 %
harmonics to 550 Hz
Value
0.00, 0.01...20.00, 20.5 ...100, 101 ... 300 s
7SG11 Argus Technical Reference
+30, +45
(see note below)
0, -15, -45, -65
5
5 or +40
0 5 , -13 5 ,-46
5 to
5 to
2.5 per 5 Hz variation
2.5
typically 20 ms at characteristic angle
typically 20 ms at characteristic angle
5% or 1 % In
5% or 1 % In
op,
5
5 or -67 5
CA + 87.5 5
(CA - 180 ) + 87.5 5
P20007 Page 12 of 71