Bosch rexroth Sytronix SvP 7030 IMC Operating Manual page 77

● Each residual-current-operated circuit breaker only supplies one drive con-
● Only Bosch Rexroth components and accessories including cables and filters
Motor cable lengths
Keep motor cables as short as possible. Only short motor cables make low
leakage currents possible and thereby enable residual-current-operated circuit
breakers to work.
Using isolating transformer to reduce leakage current in mains
If no improvement is achieved and the residual-current-operated circuit breaker,
due to specific mains conditions on site, has to be used nevertheless on the
mains input side, connect an isolating transformer between mains connection
and power connection of the drive system. This reduces the leakage current in
the ground wire of the mains that is produced during normal operation which
allows the residual-current-operated circuit breaker to be used. Connect the
neutral point of the output winding of the isolating transformer to the protec-
tive earth conductor of the drives system.
Match the impedance of the fault loop with the overcurrent protection device in
order that switching off takes place in the event of a fault.
Before enabling operation, test the overcurrent protection device for proper
function with tripping in the event of a fault.
Exclusive fusing by residual-current-operated circuit breaker
For drive systems with electronic device controllers, fusing exclusively by
means of a residual-current-operated circuit breaker is usually not possible and
not permitted.
Electronic equipment that has a nominal power higher than 4 kVA or is destined
for permanent connection normally does not need residual-current-operated
circuit breakers. Observe the country-specific standards.
According to IEC 60204-1 and IEC 61800-5-1, the mains-side protection against
indirect contact, i.e. in the case of insulation failure, has to be provided in a
different way, for example by means of an overcurrent protection device, pro-
tective grounding, protective-conductor system, protective separation or total
insulation.
Mains choke
When using mains chokes, observe their effect on connected drive controllers.
Due to their inductance, mains chokes have a smoothing effect on current, thus
reducing harmonics.
Take the nominal current of the mains choke into account in order that the
inductance of the mains choke is available.
Certain main chokes are assigned to some drive controllers (see technical data
of the drive controller "Mains voltage supply data → Assigned mains choke
type").
Mains contactor
The mains contactor is optional.
Required input data:
● Nominal current I
● Number of drive controllers to be connected to the mains contactor
RE 62312-B, 03.2022
Connecting the Sytronix system SvP 7030 electrically
troller
are used
of the drive controller
LN
Sytronix SvP 7030 IMC
Bosch Rexroth AG
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