11
MMRG Series
Chassis
drives should be fused for protection. Use fast acting fuses rated
for 250 VAC or higher and 150% of maximum armature current. Fuse HOT
L1 only when the line voltage is 115 VAC. Fuse both L1 and L2 when the
line fuse is 230 VAC. Table 1 lists the recommended fuse sizes.
Line Fusing
90 VDC
Motor
Horsepower
180 VDC
Motor
Horsepower
Maximum DC
Armature Current
(amps)
AC Line
Fuse Size
(amps)
1/20
1/15
1/8
1/6
1/10
1/8
1/4
1/3
0.5
0.8
1.5
1.7
1
1.5
3
3
1/4
1/2
2.5
5
1/3
1/2
3/4
1
3/4
1
1 1/2
2
3.5
5.0
7.5
10
8
10
15
15
Minarik Drives offers fuse kits. See Section 9: Accessories and
Replacement Parts for fuse kit part numbers.
Table 1. Recommended Line Fuse Sizes