Parameters
Such a Switch-OnTo-Fault application can easily be realized using the
Adaptive Parameter
features above
mentioned: The standard time overcurrent protection element (e.g. 51P) normally works with an inverse curve
type (e.g. ANSI Type A), while in case of
SOTF
condition, it should trip instantaneously. If the
SOTF
logic
function »SOTF
ENABLED
« is detecting a manual circuit breaker close condition the relay switches to
AdaptiveSet1
if the signal »SOTF.
ENABLED
« is assigned to
AdaptiveSet1
. The corresponding
AdaptiveSet1
will
become active and that means e.g. »
curve type = DEFT«
and »
t = 0«
sec.
The screen shot above shows the adaptive setting configurations following applications based on only one
simple overcurrent protection element:
1.
Standard Set: Default settings;
2.
Adaptive Set 1:
SOTF
application (Switch-Onto-Fault);
3.
Adaptive Set 2:
CLPU
application (Cold Load Pickup);
4.
Adaptive Set 3: Voltage-Controlled time overcurrent protection (ANSI 51V); and
5.
Adaptive Set 4: Negative- Phase- Sequence- Voltage-Controlled time overcurrent protection.
EN MRM4 01/11
Page 217
Summary of Contents for MRM4
Page 1: ...MRM4 HighPROTEC Motor Protection Device Manual DOK HB MRM4E...
Page 3: ...Order Code EN MRM4 01 11 Page 3...
Page 18: ...Important Definitions Page 18 EN MRM4 01 11 41 SG Prot ON 42 SG ON Cmd SG Prot ON SG ON Cmd...
Page 115: ...Navigation Operation Navigation Operation EN MRM4 01 11 Page 115 1 2 3 5 7 6 8 10 9...
Page 162: ...Recorder Name Description I 2 TripCmd Signal Trip Command Page 162 EN MRM4 01 11...
