BONFIGLIOLI Active ACT 201-05, Краткое руководство

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06/05 19
06/05 19
5 Electrical Installation
The electrical installation must be carried out by qualified staff according to the
general and regional safety and installation directives. For a safe operation of the
frequency inverter it is necessary that the documentation and the device
specifications be complied with during installation and commissioning. In the case of
special applications, you may also have to comply with further guidelines and
instructions.
Danger! When the frequency inverter is disconnected from power supply, the
mains, DC-link voltage and motor terminals may still be live for some
time. Wait for some minutes until the DC link capacitors have
discharged before starting to work at the unit.
The connecting cables must be protected externally, considering the maximum
voltage and current values of the fuses. The mains fuses and cable cross-sections are
to be selected according to EN 60204-1 and DIN VDE 0298 Part 4 for the nominal
operating point of the frequency inverter. According to UL/CSA, the frequency
inverter is suitable for operation at a supply network of a maximum of 480 VAC which
delivers a maximum symmetrical current of 5000 A (effective value) if protected by
fuses of class RK5. Only use copper cables with a temperature range of 60/75 °C.
Warning! The frequency inverters are to be grounded properly, i.e. large
connection area and with good conductivity. The leakage current of the
frequency inverters may be > 3.5 mA. According to EN 50178 a
permanent connection must be provided. The protective conductor
cross-section required for grounding the fixing plate must be at least 10
mm², or a second protective conductor must be installed electrically
parallel to the first one. In these applications, the cross-section must
correspond to the recommended cross-section of the wire.
Connection conditions
−
The frequency inverter is suited for connection to the public or industrial supply
mains according to the technical data. If the transformer output of the supply
mains is ≤ 500 kVA, the optional mains commutation choke is only necessary for
the frequency inverters identified in the technical data. The other frequency
inverters are suitable for connection without a mains commutating choke with
relative mains impedance
≥
1%.
− It must be checked, based on the specifications of EN 61000-3-2, if the devices
can be connected to the public supply means without taking additional measures.
The frequency inverters ≤ 9.2 kW with integrated EMC filter comply with the
emission limits of the product standard EN 61800-3 up to a motor cable length of
10 m, without additional measures being required. Increased requirements in
connection with the specific application of the frequency inverter are to be met
by means of optional components. Commutating chokes and EMC filters are
optionally available for the series of devices.
− Operation on unearthed mains (IT mains) is admissible after disconnection of the
Y capacitors in the interior of the device.
− Interference-free operation with residual-current device is guaranteed at a
tripping current ≥ 30 mA if the following points are observed:
−
Pulse-current and alternating-current sensitive residual current devices (Type
A to EN 50178) in the case of a connection of frequency inverters with one-
phase power supply (L1/N)
−
All-current sensitive residual current devices (Type B to EN 50178) in the case
of a connection of frequency inverters with two-phase (L1/L2) or three-phase
(L1/L2/L3) power supply.
−
Use EMC filters with reduced leakage current or, if possible, do not use EMC
filters at all.
−
The length of the shielded motor cable is ≤ 10 m and there are no additional
capacitive components between the mains or motor cables and PE.