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Rexroth IndraDrive
13.3 Mains Connection
General
Direct mains connection
Mains fuse protection with direct
mains connection
Connecting the mains via a
transformer
(Mains) voltage cutoff
(Mains) voltage drop-outs
DOK-INDRV*-HMV-*******-PR01-EN-P
High electrical voltage on the housing!
High leakage current! Danger to life, danger of
injury by electric shock!
⇒ Connect the electrical equipment, the housings of all
DANGER
electrical units and motors permanently with the safety
conductor at the ground points before power is
switched on. Look at the connection diagram. This is
even necessary for brief tests.
⇒ Connect the safety conductor of the electrical
equipment always permanently and firmly to the
supply mains. Leakage current exceeds 3.5 mA in
normal operation.
⇒ Use a copper conductor with at least 10 mm² cross
section over its entire course for this safety conductor
connection! The cross section must not be smaller
than the cross section of a phase of the mains supply
wire.
⇒ Prior to startups, even for brief tests, always connect
the protective conductor or connect with ground wire.
Otherwise, high voltages can occur on the housing
that lead to electric shock.
Supply units of the HMV01.1E and HMV01.1R line can be connected to
grounded
three-phase
(Concerning electrical data of the mains: see chapter 7.3)
For more information about the subject "Mains fuse protection with direct
mains connection" read the recommendations in chapter "Fusing with
Direct Mains Supply" on page 13-13.
A transformer is needed if the mains voltage is smaller than 380 V or
greater than 480 V.
The required transformers power must be equal to or greater than the
incoming power.
The isolating transformer must have a short-circuit voltage of U
Note:
The mains inductance (leakage inductance) of transformers
varies dependent upon power and type.
If no additional capacitance is used, the supply voltage can be cut off for
3 ms in case of nominal load and 3 x AC 380 V mains voltage. More than
1 second should have passed between successive voltage cutoffs.
With 3 x AC 380 V mains voltage, the supply voltage may drop-out by
20% of the peak voltage for a maximum of 10 ms (in case of higher
supply voltages proportionally more). More than 1 second should have
passed between successive voltage drop-outs.
without
the
need
13-5
Appendix
of
a
transformer.
< 2.5%.
K
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