VAMP 257
Feeder and motor manager
Technical description
VAMP Ltd
16
VAMP 24h support phone : +358 (0)20 753 3264
VM257.EN002
Curve family:
IEEE
Parameters:
A, B, C
⎥
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎢
⎣
⎡
+
−
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
=
B
I
I
A
k
t
C
pickup
1
Standard
delays
A B C
LTI
Long time inverse
0.086
0.185
0.02
LTVI
Long time very inverse
28.55
0.712
2
LTEI
Long time extremely inverse
64.07
0.250
2
MI Moderately
inverse
0.015 0.1140 0.02
VI Very
inverse
19.61 0.491
2
EI Extremely
inverse
28.2 0.1217 2
STI
Short time inverse
0.16758
0.11858
0.02
STEI
Short time extremely inverse
1.281
0.005
2
Curve family:
IEEE2
Parameters:
A … E
⎥
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎢
⎣
⎡
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+
=
3
2
C
I
I
E
C
I
I
D
C
I
I
B
A
k
t
pickup
pickup
pickup
Standard delays
A
B
C
D
E
MI Moderately
inverse
0.1735 0.6791 0.8 -0.08 0.1271
NI Normally
inverse
0.0274 2.2614 0.3 -4.1899
9.1272
VI Very
inverse
0.0615
0.7989 0.34 -0.284
4.0505
EI Extremely
inverse
0.0399
0.2294 0.5 3.0094
0.7222
Curve/delay:
RI/RI
Parameters:
None
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
=
pickup
I
I
k
t
236
.
0
339
.
0
Curve/delay:
RI/RXIDG
Parameters:
None
pickup
I
k
I
t
ln
35
.
1
8
.
5
−
=
