VAMP 150
Motor protection relay
Technical Description
VAMP Ltd
12
Vamp 24h support phone : +358 (0)20 753 3264
VM150.EN005
&
t
³1
&
&
>
t
s
t
r
MAX
Istlohko
Motor nom.
start current
Delay
Definite / inverse
time
Enable events
Inverse delay
Start
Trip
Register
event
Register
event
Im1
Im2
Im3
Block
Figure 2.2.2-2. Block diagram of the stall protection stage I
st
>.
Parameters of the stall protection stage:
IIII
st
st
st
st
> (48)
> (48)
> (48)
> (48)
Parameter
Parameter
Parameter
Parameter
Value/unit
Value/unit
Value/unit
Value/unit
ImotSt
xImot
Nominal motor starting
current
Ist>
%Imot
Start detect current. Must be
less than initial motor starting
current.
DT
Operation charact./ definite
time
Type
Inv
Operation charact./ inverse
time
tDT>
s
Operation time [s]
Setting
values
tInv>
s
Time multiplier at inverse
time
SCntr
Start counter (Start) reading
TCntr
Trip counter (Trip) reading
Flt
xImot
Max. value of fault.
Recorded
values
EDly
%
Elapsed time as compared to
the set operate time, 100% =
tripping