VAMP Ltd
Feeder and motor manager
Technical description
VAMP 257
VM257.EN002
VAMP 24h support phone : +358 (0)20 753 3264
71
&
t
&
&
Im1
Im2
Im3
MA
X
2ndHarm
t
s
t
r
>
Start
T
ri
p
Re
g
ister
event
Re
g
ister
event
Settin
g
2
.
Harm
B
lock
Delay
E
nable events
Figure 2.3.23-1. Block diagram of the second harmonic stage.
Setting parameters of second harmonic blocking:
2.Ha (68)
Parameter Value
Unit Default Description
If2>
10 … 100
%
10
Setting value If2/Ifund
t_f2
0.05 … 300.0
s
0.05
Definite operating time
S_On
Enabled;
Disabled
- Enabled Start
on
event
S_Off
Enabled;
Disabled
-
Enabled Start off event
T_On
Enabled;
Disabled
- Enabled Trip
on
event
T_Off
Enabled;
Disabled
-
Enabled Trip off event
Measured and recorded values of second harm. blocking:
2.Ha (68)
Parameter Value Unit Description
IL1H2.
%
2. harmonic of IL1, proportional
to the fundamental value of IL1
IL2H2.
%
2. harmonic of IL2
Measured
values
IL3H2.
%
2. harmonic of IL3
Flt
%
The max. fault value
Recorded
values
EDly
%
Elapsed time as compared to the
set operating time; 100% =
tripping
