Connection Of Motor Modules To A Common Dc Busbar; Direct Connection To The Dc Busbar - Siemens SINAMICS G130 Engineering Manual

SINAMICS S120
Engineering Information

6.7 Connection of Motor Modules to a common DC busbar

6.7.1

Direct connection to the DC busbar

With this connection method, a continuous direct connection between the Motor Modules and the DC busbar is made
without separable contact points using bar conductors, cables or fuses.
Direct connection of a Motor Module to the DC busbar
Each Motor Module must be provided with separate fuse protection.
Air-cooled S120 Motor Modules in Chassis format are equipped as standard for this purpose with integrated, fast
semiconductor fuses in both the positive and negative paths. These disconnect the Motor Module quickly, reliably
and completely from the DC busbar in the event of an internal short circuit, which means that these Motor Modules
can be bolted directly onto the DC busbar by means of short bar conductors or cables.
Liquid-cooled S120 Motor Modules in Chassis format do not feature integrated fuses. They must therefore be
connected to the DC busbar via externally mounted, fast semiconductor fuses. The fuse types recommended for the
direct connection method are listed in the table below.
Output power IEC semiconductor fuses
at (number per Motor Module)
400 V / 690 V
[kW] Number x Order No.
DC link voltage 510 V – 720 V DC
110 2 x 3NE3 230-0B
132 2 x 3NE3 232-0B
160 2 x 3NE3 233
250 2 x 3NE3 336
315 2 x 3NE3 338-8
1)
400 4 x 3NE3 334-0B
450 4 x 3NE3 335
560 4 x 3NE3 336
1)
710 4 x 3NE3 340-8
800 4 x 3NE3 340-8
DC link voltage 675 V – 1035 V DC
90 2 x 3NE3 224
132 2 x 3NE3 225
200 2 x 3NE3 230-0B
315 2 x 3NE3 233
1)
450 2 x 3NE3 336
560 4 x 3NE3 232-0B
1)
710 4 x 3NE3 335
800 4 x 3NE3 335
1000 4 x 3NE3 337-8
1200 4 x 3NE3 340-8
1)
1500 6 x 3NE3 337-8
1) The IEC fuses specified for these units are not UL-approved
Fuses recommended for direct connection of liquid-cooled S120 Motor Modules in Chassis format to a DC busbar
Note:
The IEC fuses listed in the table above are identical to the fuses integrated in the air-cooled SINAMICS S120 Motor
Modules of the same power rating.
SINAMICS Engineering Manual – November 2015
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Ó Siemens AG
Class aR
I
rated
[A]
315
400
450
630
800
500
560
630
900
900
160
200
315
450
630
400
560
560
710
900
710
UL fuses
Power (number per Motor
loss Module)
Size [W] Number x Order No.
1 2 x 65 2 x 3NB1 231-4KK11
1 2 x 85 2 x 3NB1 234-4KK11
1 2 x 95 2 x 3NB1 337-4KK11
2 2 x 100 2 x 3NB1 345-4KK11
2 2 x 130 2 x 3NB2 345-4KK16
2 4 x 90 2 x 3NB2 350-4KK16
2 4 x 95 2 x 3NB2 350-4KK16
2 4 x 100 2 x 3NB2 355-4KK16
2 4 x 165 2 x 3NB2 364-4KK17
2 4 x 165 2 x 3NB2 364-4KK17
1 2 x 42 2 x 3NB1126-4KK11
1 2 x 42 2 x 3NB1128-4KK11
1 2 x 65 2 x 3NB1231-4KK11
1 2 x 95 2 x 3NB1337-4KK11
2 2 x 100 2 x 3NB1345-4KK11
1 4 x 85 2 x 3NB2345-4KK16
2 4 x 95 2 x 3NB2350-4KK16
2 4 x 95 2 x 3NB2350-4KK16
2 4 x 105 2 x 3NB2357-4KK16
2 4 x 165 2 x 3NB2364-4KK17
2 6 x 105 2 x 3NB2366-4KK17
I
rated
[A] Size
315 2L
400 2L
500 3L
800 3L
800 2x2L
1000 2x3L
1000 2x3L
1400 2x3L
2100 3x3L
2100 3x3L
200 1L
250 1L
315 2L
500 3L
800 3L
800 2x2L
1000 2x3L
1000 2x3L
1600 2x3L
2100 3x3L
2400 3x3L