VAMP 257 - Page 113

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
MAX
2ndHarm
ts
tr
>
Start
Trip
Register
event
Register
event
Setting
2.Harm
Block
Delay
Enable 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