8 | Connection STOBER
62
12/2018 | ID 442537.05
Size Type I
1N,PU
(4kHz)
[A]
I
1maxPU
(4 kHz)
[A]
Fuse selection
Miniature circuit breakers Safety fuse
1 SD6A14 12 21.6 EATON
Type: FAZ-Z20/3,
Manufacturer No. 278928
Triggering characteristics:
Z20A
SIBA
Type: URZ,
Item No. 50 140 06.32
Triggering
characteristics: gR32A
SD6A16 19.2 34.6
2 SD6A24 26.4 47.5 EATON
Type: FAZ-Z40/3,
Manufacturer No. 278931
Triggering characteristics:
Z40A
SIBA
Type: URZ,
Item No. 50 140 06.80
Triggering
characteristics: gR80A
SD6A26 38.4 69.1
3 SD6A34 45.3 81.5 EATON
Type: FAZ-B63/3,
Manufacturer No. 278853
Triggering characteristics:
B63A
3
Siemens
Type: SIRUS,
Item No. 3RV 1041-4KA10
Triggering characteristics:
57A–75A
4
SIBA
Type: URZ,
Item No. 50 140 06.100
Triggering
characteristics: gR100A
SD6A36 76 136.8
SD6A38 76 136.8
Tab. 49: Recommended line fuse in parallel connection
Maximum number of drive controllers
Multiple drive controllers of the same rating can be connected via a common fuse combination.
The fuses and the resulting maximum line input current correspond to that of a single drive
controller.
In order to prevent gradual damage to the safety fuse, the maximum number of possible drive
controllers on one fuse combination is limited as follows:
§ Size 0: Maximum of 4 drive controllers
§ Size 1: Maximum of 2 drive controllers
§ Size 2: Maximum of 5 drive controllers
§ Size 3: Maximum of 2 drive controllers
ATTENTION!
Damage due to overload!
In order to ensure an even distribution of charging current on all AC-supplied drive controllers,
all circuit breakers must be closed when engaging the power supply.
▪ In order that the input rectifier is not overloaded in the event of a possible fuse failure in the
group, evaluation of the grid monitoring for AC-supplied drive controllers must lead to
deactivation of the entire DC link group.
3
The input current is reduced from 73A to 63A and the output power is lowered as a result; however, reli-
able rectifier protection is still guaranteed.
4
Miniature circuit breaker size S3, CLASS 10, adjustable current range: 57A – 75A, electromagnetic trig-
gering: 975 A. The rectifier diodes are not protected in the range of 2x to 13x the nominal current.