POWER CIRCUITS
6.8 Fuse Selection for Type 2 Coordination
Type 2 coordination is achieved by using semiconductor fuses. These fuses must be able to carry motor start current and have a total
clearing I
2
t less than the I
2
t of the soft starter SCRs.
When selecting semiconductor fuses for EMX3, use the I
2
t values in the table.
For further information on selecting semiconductor fuses, contact your local distributor.
I
2
t values for Type 2 coordination
Model SCR I
2
t (A
2
s)
EMX3-0023B 1150
EMX3-0043B 8000
EMX3-0050B 10500
EMX3-0053B
15000
EMX3-0076B
EMX3-0097B 51200
EMX3-0100B 80000
EMX3-0105B
125000
EMX3-0145B
EMX3-0170B
320000
EMX3-0200B
EMX3-0220B
EMX3-0255B
EMX3-0350B 202000
EMX3-0425B
320000
EMX3-0500B
EMX3-0580B
781000
EMX3-0700B
EMX3-0820B 1200000
2530000
EMX3-0255C
320000
EMX3-0360C
EMX3-0380C
EMX3-0430C
EMX3-0620C
1200000
EMX3-0650C
EMX3-0790C 2530000
EMX3-0930C
4500000
EMX3-1200C
EMX3-1410C 6480000
EMX3-1600C 12500000
22 | User Manual (710-04840-00M)