NORD Drivesystems BU0210 - Manual (Page 7)

1 General information
BU 0210 GB Subject to technical amendments 7
1.1 Safety and installation Information
NORDAC SK 200E frequency inverters are equipment for use in industrial high voltage systems and are
operated at voltages which may cause death or severe injuries if they are touched.
 Installation and other work may only be carried out by qualified electricians and with the
device disconnected. The operating instructions must always be available to these persons
and must be strictly observed.
 Local regulations for the installation of electrical equipment and accident prevention must
be complied with.
 The equipment continues to carry hazardous voltages for up to 5 minutes after being
switched off at the mains.
 For single phase operation (115V/230 V) the mains impedance must be at least 100H for
each conductor. If this is not the case, a mains choke must be installed.
 For safe isolation from the mains, all poles of the supply cable to the frequency inverter
must be able to be disconnected.
 Even during motor standstill (e.g. due to electronic block, blocked drive or output terminal
short circuit the mains connection terminals, motor terminals and terminals for the brake
resistor may conduct hazardous voltages. A motor standstill is not identical to electrical
isolation from the mains.
 Warning: with certain settings, the frequency inverter/motor can start up automatically after
the mains are switched on.
 The frequency inverter is only intended for permanent connection and may not be operated
without effective earthing connections that comply with local regulations for large leakage
currents (>3.5mA). VDE 0160 requires the installation of a second earthing conductor or an
earthing conductor cross-section of at least 10mm
2 ..
 For 3-phase frequency inverters, normal FI-circuit breakers are not suitable as the sole
protection for three-phase frequency inverters if the local regulations do not permit a
possible DC proportion in the fault current. According to EN 50178 / VDE 0160, the FI
circuit breaker must be an all-current sensitive FI circuit breaker (Type B).
 In normal use, NORDAC 200E frequency inverters are maintenance free. The cooling
surfaces must be regularly cleaned with compressed air if the ambient air is dusty.
CAUTION
The heat sink and all other metal components can heat up to temperatures above 70°C.
When installing, sufficient distance from neighbouring components must be maintained. Allow
sufficient cooling time before working on the components.
Protection against accidental contact may need to be provided.
ATTENTION
DANGER TO LIFE!
The frequency inverter may continue to carry voltages for up to 5 minutes after being
switched off at the mains. Inverter terminals, motor cables and motor terminals may carry
voltage!
Touching open or free terminals, cables and equipment components can lead to severe injury
or death!
Work may only be carried out by qualified specialist electricians and with the electrical supply
to the device disconnected.