Rev. 07
34/138
4.15. IEC60255-151 Curves
The SIA-B relay complies with the curves shown in standard IEC60255-151:
•
Inverse Curve
•
Very Inverse Curve
•
Extremely Inverse Curve
•
Long time inverse
There is a general mathematical equation that defines the time in seconds as a function of the current:
K
D
B
Q
V
D
A
t
P
+
+
−
=
adjusted
I
I
V
=
Parameters
A
P
Q
B
K
Long Time Inverse
120
1
1
0
0
Ext. Inverse
80
2
1
0
0
Very Inverse
13,5
1
1
0
0
Inverse
0,14
0,02
1
0
0
The curve can mode from its axis using the D time selection device, which the user can adjust.
I
adjusted
is the initial operating current, set by the user.
Summary of Contents for SIA-B Series
Page 8: ...www fanox com Rev 07 8 138 Cut out pattern 2 3 Striker dimensions 2 3 1 PRT 15...
Page 9: ...www fanox com Rev 07 9 138 2 3 2 PRT A 44 5 B 49 5 C 56 5 D 64 5 E 42 5...
Page 10: ...www fanox com Rev 07 10 138 2 4 Connection diagram NOTE STRIKER 6 24 Vdc 0 135 W s...
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