ISA T1000 PLUS - Page 144

DOC. MIE91093 Rev. 1.34 Page 144 of 145
B) Parameter t (I>)
The Time Current Curves are calculated with the following
equation:
 
)(tIF
1
I
I
A
st
R











a
where:
 
1
110
A
F











 B
a
t(I>) = Set time delay at 10 times the Pick-up Current.
In this instance, parameters are summarised in the following
table.