15
Fuses shall not be installed between the drive and the motor.
In PM motor applications where the drive input current can be lower than the
output current, it is allowed to use a protection device with a lower current rating
thus being able to optimize line side wiring and ancillary components.
If the controller / elevator drive is supplied through an individual isolation
transformer, the maximum fuse amp rating shall not be greater than 125% of the
secondary current rating of the transformer per NFPA70 and CSA 22.1. This
value may be signi cantly lower than the values in the preceding tables.
1.5.5 Line Chokes
A line choke with minimum 3% impedance is required for all 230 V inverters 50hp
(size 20) and greater. A line choke with minimum 3% impedance is required for
all 480V inverters 100hp (size 23) and greater.
Table 1.5.4.2 - 480V Units
* Semiconductor fuses are manufactured by Siba Fuse Inc. When using this type
of fuse, this is the model number of the fuse is the fuse that must be used.
SCCR UL 248 Semiconductor UL 489
Unit Size /
Housing
[kA]
rms
Class J
Rating [A]
Fuse Number* /
Rating [A]
MCCB [A] /
Siemens Cat. No.
13 / E 10 25
50 140 06 40 / 40
14 / E 10 30
50 140 06 50 / 50
14 / G 10 30
50 140 06 80 / 80
15 / E 10 40
50 140 06 80 / 80
15 / G, H 10, 18 40
50 140 06 40 / 40
16 / G, H 10, 18 50
50 140 06 63 / 63
17 / G, H 10, 18 60
50 140 06 80 / 80
18 / H 18 70
50 140 06 80 / 80
19 / H 18 90
50 140 06 100 / 100
19 / R 100 90 - - 150A / DG-frame 3VL 150 UL
20 / H 18 100 - -
20 / R 100 100 - - 150A / DG-frame 3VL 150 UL
21 / R 100 150 - - 150A / DG-frame 3VL 150 UL
22 / R 100 175 - - 150A / DG-frame 3VL 150 UL
23 / R,U 100 200 - - 250A / FG-frame 3VL 250 UL
24 / R,U 100 225 - - 250A / FG-frame 3VL 250 UL
25 / U 100 275 - - 400A / JG-frame 3VL 400 UL
26 / U 100 300 - - 400A / JG-frame 3VL 400 UL
27 / U 100 350 - - 400A / JG-frame 3VL 400 UL
28 / U 100 400 - - 400A / JG-frame 3VL 400 UL
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