Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 137)

Chapter 6
Installation
6-13
Power Wiring It is recommended that an Allen-Bradley DC Loop Contactor Lug Kit be
ordered for proper wire terminations. Table 6.E provides a listing and
description of the available lug kits.
Table 6.E
Allen-Bradley Armature DC Loop Contactor Lug Kits
Rated Motor
Arm. Current
1
A DC
40
52
56
68
92
104
110
120
140
160
180
204
228
248
268
280
DC Contactor
Rating
A DC
56
56
56
110
110
110
110
180
180
180
180
280
280
280
280
280
Armature
Conductor Size
2
AWG
8
6
4
4
2
1
1/0
1/0
2/0
3/0
4/0
250MCM
300MCM
350MCM
400MCM
500MCM
DB Conductor
Size
3
AWG
8
8
8
8
6
6
4
4
2
2
2
1
1/0
2/0
2/0
3/0
Arm. Conductor
Crimp Lug
Hole Size
#10
#10
#10
1/4”
1/4”
1/4”
1/4”
5/16”
5/16”
5/16”
5/16”
1/2”
1/2”
1/2”
1/2”
1/2”
DB Conductor
Crimp Lug
Hole Size
#10
#10
#10
1/4”
1/4”
1/4”
1/4”
5/16”
5/16”
5/16”
5/16”
3/8”
3/8”
3/8”
3/8”
3/8”
Lug Kit Cata-
log Number
1370-LG40
1370-LG52
1370-LG56
1370-LG68
1370-LG92
1370-LG104
1370-LG110
1370-LG120
1370-LG140
1370-LG160
1370-LG180
1370-LG204
1370-LG228
1370-LG248
1370-LG268
1370-LG280
1 The Rated Motor Armature Current is taken directly from the motor nameplate or motor data. The current listed in the table (column 1) is the maximum current allowed for
the Armature Conductor Size (column 3) and the DC Contactor Rating (column 2).
2 The armature conductors are sized by multiplying the Rated Armature Current by 1.25 as provided for in NEC 430-22 (1987). The DC lug ratings are determined from
NEC Table 310-16 (1987) for copper conductors, insulation temperature rated at 75
°
C (167
°
F) at an ambient temperature of 30
°
C (86
°
F). If conditions are other than
shown in NEC Table 310-16 then refer to applicable codes.
3 The dynamic braking (DB) conductors are sized as in Note 2, but at half ampacity due to the short time duration of current flow in these conductors, and has been sized to
satisfy NEMA Standard ICS 3-302.62 – Dynamic Braking. If the load inertia is larger than that of the motor, calculations must be made to determine correct conductor
sizing and DB resistor wattage per NEMA Standard ICS 3-302.62. If the wire size of the DB conductor does not fit on the DB grid connection, install a terminal block near
the DB resistors and use multiple wire runs between the resistors and the terminal block.