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Risk of fire caused by missing fuses!
NOTICE
Install fuses. In case a short circuit occurs in the drive controller, a fuse pro‐
vides optimum safety against overheating or fire (see also IEC 61800‑5‑1 and
UL 508C).
For distribution in North America, single fuses are required for this type of
mains connection (see UL 508A).
In the scope of international and European standards (IEC/EN, not North
America), it is allowed to use a group fuse instead of the single fuses. When
selecting the nominal current of the group fuse, observe the loop impedance,
the line length and the line cross section of the mains supply feeder (see IEC
60204-1, chapter Appendix A).
Observe the data for dimensioning line cross sections and fuses (see also
IEC 60204‑1, UL 508A and NFPA 79).
Mains connected load and mains current
Technical data of the components
●
chapter 7.2.2 "Mains voltage" on page 139
●
chapter 7.2.3 "DC bus" on page 141
Calculating the mains-side phase current
The mains-side phase current is required for the following cases:
●
Selecting mains contactor
●
Determining fuses in the mains connection
●
Determining line cross section
●
Selecting other components in the mains connection (mains filter, mains
choke)
Operation under rated conditions
For data on mains contactor, fuses and cross section in operation under rat‐
ed conditions, see technical data of the respective component.
Operation at partial load
Operation at partial load can lead to smaller mains contactors, fuses and line
cross sections.
If defined data for operation at partial load are available, the mains-side
phase current can be determined as follows:
1.
Determine motor power
Take power of drive controller-motor combination from Rexroth Indra‐
Size or calculate it.
P
mHa
Mechanical nominal power for main drives (shaft
output) [kW]
M
n
Nominal motor torque [Nm]
n
n
Nominal motor speed [min
-1
]
2.
Determine DC bus power from motor power and efficiency
Bosch Rexroth AG
DOK-INDRV*-HXX05******-PR02-EN-P
110/407
Rexroth IndraDrive ML Drive Systems with HMU05
Combining the individual components
Содержание Rexroth HMU05.1N Series
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