VAMP 150 - Page 40

VAMP 150 Motor protection relay
Technical Description
VAMP Ltd
12
Vamp 24h support phone : +358 (0)20 753 3264 VM150.EN005
&
t
³1
&
&
>
ts
tr
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:
I
II
I
st
stst
st
> (48)
> (48)> (48)
> (48)
Parameter
ParameterParameter
Parameter Value/unit
Value/unitValue/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