VAMP 257
Feeder and motor manager
Operation and configuration
VAMP Ltd
42
VAMP 24h support phone +358 (0)20 753 3264
VM257.EN002
2 Settings for protection stages
Protection stage
Parameter
Setting
Overcurrent stage I>
I>
1.20 x In
Type
DT
t>
0.30
s
k> (NI, VI, EI,
LTI)
1.00
k> is valid only for inverse time.
Overcurrent stage I>>
I>>
2.50 x In
t>
0.20
s
Unbalance stage I2>
I2>
20 %
t>
10.0
s
Earth fault stage Io>
Io>
20 %
Type
DT
t>
1.00
s
k> (NI, VI, EI,
LTI)
1.00
k> is valid only for inverse time.
Directional Earth fault
Io
ϕ
>
0.20 pu
stage Io
ϕ
>
t> 1.00
s
Uo>
10
%
Offset
0
°
ChCtrl
DI13
See section 2.3.4 from technical description.
Earth fault stage Uo >
Uo >
10 %
t>
2.0
s
Thermal stage T>
T>
1.06 x In
Alarm
90
%
Tau
60
min
Auto reclose
ReclT
10.0 s
PulseL
0.20
s
ReadyT
10.0
s
2. Harmonics stage
2. Harm
10 %
3 Blocking matrix
The required blockings are made by using the VAMPSET
software.
4 Configuration of output relays
The required groupings of the output relays and output signals
are configured in the DO menu, see chapter 5.4 on page 32.