VAMP 257 - Page 74

VAMP 257 Feeder and motor manager
Technical description
VAMP Ltd
32
VAMP 24h support phone : +358 (0)20 753 3264
VM257.EN002
Curve family: IEEE Parameters:
A, B, C
⎥
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎢
⎣
⎡
+
−
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
= B
I
I
A
kt
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
⎥
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎢
⎣
⎡
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+
⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
−
+=
32
C
I
I
E
C
I
I
D
C
I
I
B
Akt
pickuppickup
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
Ik
I
t ln35.18.5 −=