Bosch Rexroth IndraDrive HMV01.1E-W0030, Project Planning Manual, Page: 113 / 132

Rexroth IndraDrive Appendix
13-13
DOK-INDRV*-HMV-*******-PR01-EN-P
Fusing with Direct Mains Supply
Fusing the mains supply can implement, with power circuit breakers or
slow-blow fuses of the gL/gG type:
HMV01.1E- Fusing
[A]
Power Circuit Breaker
Setting [A]
Wire cross
section
[mm²]
W0030 63 50 16
W0075 160 125 50
W0120 250 200 120
HMV01.1R- Fusing
[A]
Power Circuit Breaker
Setting [A]
Wire cross
section
[mm²]
W0018 35 30 6
W0045 80 70 25
W0065 125 100 50
Fig. 13-13: Fusing with direct mains supply
13.4 Grounding the Power Supply System
HMV01.1E and HMV01.1R can be operated from three-phase systems
with grounded neutral points or phases without control-to-load isolation.
With ungrounded mains (IT mains) there is the increased danger that
unacceptably high overvoltages could occur between the phase and the
housing. Both the HMV01.1E and HMV01.1R can be protected against
unacceptable overvoltages,
•
if they are connected via an isolating transformer (the star point of
the output side and the PE connection of the power supply unit are
connected over one grounding rail)
- or -
•
if the unit is protected by over voltage suppressers.
Note: Connecting the HMV01.1E and HMV01.1R via an isolating
transformer offers the best protection against overvoltage and
the greatest operating safety.
Grounded three-phase mains
Ungrounded three-phase mains