Allen-Bradley 1407-CGCM, Руководство пользователя, Страница: 171 / 252

Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
Time Over-current Characteristic Curves !PPENDIX !
4IME$IAL3ETTING#ROSSREFERENCE
Although the time characteristic curve shapes have been optimized for each relay,
time dial settings of the CGCM unit are not identical to the settings of
electromechanical induction disk over-current relays.
The Characteristic Curve Cross-reference table on page 172 helps you convert
the time dial settings of induction disk relays to the equivalent setting for the
CGCM unit.
5SING4ABLE
Cross-reference table values were obtained by inspection of published
electromechanical time current characteristic curves. The time delay for a current
of five times tap was entered into the time dial calculator function for each time
dial setting. The equivalent CGCM unit time dial setting was then entered into
the cross-reference table.
If your electromechanical relay time dial setting is between the values provided in
the table, it will be necessary to interpolate (estimate the correct intermediate
value) between the electromechanical setting and the factory setting.
4ABLE#HARACTERISTIC#URVE#ROSS2EFERENCE
#URVE #URVE.AME 0AGE 3IMILAR4O
1 S, Short Inverse 173 ABB CO-2
2 S2, Short Inverse 174 GE IAC-55
3 L, L1, Long Inverse 175 ABB CO-5
4 L2, Long Inverse 176 GE IAC-66
5 D, Definite Time 177 ABB CO-6
6 M, Moderately Inverse 178 ABB CO-7
7 I, I1 Inverse Time 179 ABB CO-8
8 I2 Inverse Time 180 GE IAC-51
9 V, V1 Very Inverse 181 ABB CO-9
10 V2, Very Inverse 182 GE IAC-53
11 E, E1 Extremely Inverse 183 ABB CO-11
12 E2, Extremely Inverse 184 GE IAC-77
13 A Standard Inverse 185 BS, IEC Standard Inverse
14 B, Very Inverse (It) 186
BS, IEC Very Inverse (I
2
t)
15
Extremely Inverse (I
2
t)
187
BS, IEC Extremely Inverse (I
2
t)
16 Long Time Inverse 188 BS, IEC Long Time Inverse
17 Fixed Time N/A N/A