16
failure. If Source KVA exceeds 500 KVA, then installation of appropriate reactor is required. If
multiple inverters are used, installation of individual reactors is required - one reactor capable of
combined amperage is not recommended. (see Table 3.7) Drivecon also recommends the use of
line reactors in retrofit installations when the Crane Commander is driving an older vintage wound
rotor motor or NEMA design D motor. Please consult Drivecon if any questions exist.
CAUTION:
DO NOT connect output of inverter through bare copper wire, enclosed collectors or
any other sliding conductor system. It is recommended that festoon is used between motor and
inverter. Size festoon according to NEC standards based on inverter ampacity.
Table 3.7a Specification of reactor for constant torque use, 5% impedance *
Inverter Type
Current (Amps)
Inductance (mH)
Heat Loss (W)
Drivecon Model #
CC-204
3
7.4
11
KLR3ATB
CC-207
4
5.5
11
KLR4ATB
CC-215
8
3.7
38
KLR8ATB
CC-222
12
1.8
44
KLR12ATB
CC-237
16
1.4
44
KLR16ATB
CC-255
25
0.88
94
KLR25ATB
CC-275
35
0.63
112
KLR35ATB
CC-2110
55
0.4
138
KLR55ATB
CC-2150
80
0.28
206
KLR80ATB
CC-2220
110
0.2
338
KLR110ATB
CC-404
2
18.3
12
KLR2CTB
CC-407
3
12.2
12
KLR2CTB
CC-415
4
9.2
12
KLR4CTB
CC-422
6
6.1
23
KLR6CTB
CC-437
8
4.6
75
KLR8CTB
CC-455
12
3.1
88
KLR12CTB
CC-475
16
2.3
88
KLR16CTB
CC-4110
25
1.5
118
KLR25CTB
CC-4150
35
1.1
130
KLR35CTB
CC-4220
55
0.82
162
KLR55CTB
* Use 5% impedence for maximum benefit and inverter protection.
Figure 3.7
