Operating instructions
Operation with only one supply frequency inverter
MICROMASTER 420 / 440 – DC link coupling between several
Frequency inverters
A&D SD Page 11/32
Copyright © Siemens AG 2005 All rights reserved
Power
Rated input
current
Rated
output
current
Rated DC
link current
Power
Rated input
current
Rated
output
current
Rated DC
link current
kW A A A Order No. A kW A A A Order No. A
0,37
1,1 1,3 1,6 3NC1402 2 - - - - - -
0,5
5
1,4 1,7 2,0 3NC1404 4 - - - - - -
0,7
5
1,9 2,2 2,6 3NC1405 5 - - - - - -
1,1 2,8 3,1 3,7 3NC1405 5 - - - - - -
1,
5
3,9 4,1 4,9 3NC1406 6 - - - - - -
2,2
5,0 5,9 7,1 3NC1410 10 - - - - - -
3
6,7 7,7 9,2 3NC1415 15 - - - - - -
4
8,5 10,2 12,2 3NC1415 15 - - - - - -
5,
5
11,6 13,2 15,8 3NC1420 20 7,
5
16,0 19,0 22,8 3NC1430 30
7,
5
15,4 19,0 22,8 3NC1430 30 11 22,5 26,0 31,2 3NC1440 40
11
22,5 26,0 31,2 3NC1440 40
1
5
30,5 32,0 38,4 3NC1450 50
1
5
30,0 32,0 38,4 3NC1450 50
18,
5
37,2 38,0 45,6 3NE8018-1 63
18,
5
36,6 38,0 45,6 3NE8018-1 63
22
43,3 45,0 54,0 3NE8020-1 80
22
43,1 45,0 54,0 3NE8020-1 80
30
59,3 62,0 74,4 3NE8021-1 100
30 58,7 62,0 74,4 3NE8021-1 100 37 71,7 75,0 90,0 3NE8021-1 100
37 71,2 75,0 90,0 3NE8021-1 100 4
5
86,6 90,0 108,0 3NE8022-1 125
4
5
85,6 90,0 108,0 3NE8022-1 125
5
5
103,6 110,0 132,0 3NE8024-1 160
5
5
103,6 110,0 132,0 3NE8024-1 160
7
5
138,5 145,0 174,0 2x3NE8021-1 2x100
7
5
138,5 145,0 174,0 2x3NE8021-1 2x100
90
168,5 178,0 213,6 2x3NE8022-1 2x125
Required DC link fuses
2x per converter are
required
Required DC link fuses
2x per converter are
required
Line supply voltage, 3-ph. 380V to 480V AC
Rated currents and recommended DC link fuses of the MICROMASTER 420/440 drive converters, versions
without/with filter
CT (Constant Torque) VT (Variable Torque)
Table 2-2: Rated currents and required DC link fuses of the MICROMASTER420 and
MICROMASTER440 frequency inverters with a line supply voltage
3-ph. 380-480V AC.
Possible fuse disconnectors:
for fuses 3NC14.. : 3NC1492
for fuses 3NE80.. : 3NP40
Note: The fused disconnectors may only be switched when
in a no-current condition. Used in compliance with
degree of pollution 2.