Elmo Rietschle G-BH9 - Manual (Page 17)

Installation
© Gardner Denver Deutschland GmbH 17 / 32 610.44434.40.000
For motor overload protection:
 Use motor circuit breakers.
 This must be adjusted to the specified
nominal current (see rating plate).
 DANGER
Electrical danger!
There is danger of an electrical shock when a
defective pump-motor unit is touched!
Mount motor circuit breaker.
Have electrical equipment checked regularly by
an electrician.
Interference immunity of drive motor:
For drive motors with integrated sensors, the
operator must provide for a sufficient interference
immunity itself. Select a suitable sensor signal
cable (e.g. with screening, connection as for a
motor power-supply cable) and analyzing unit.
Operation with frequency converter:
 WARNING
Pump-motor units with a UL approbation may
not be operated on frequency converters in the
US without testing by a suitable test agency!
With a power supply by a frequency converter,
the following must be observed:
 High-frequency current and voltage harmonics
in the motor supply cables can lead to emitted
electromagnetic interference. This is
dependent on the converter design (type,
manufacturer, interference suppression
measures).
 Be sure to observe the EMC notes of the
converter manufacturer!
 Use screened power supply cables if
necessary. For optimal screening, the screen
must be conductively connected over a large
area to the metal terminal box of the drive
motor with a screwed metal gland.
 In the case of drive motors with integrated
sensors (e.g. PTC thermistors) interference
voltage can occur on the sensor cable
depending on the converter type.
 Limit speed:
see specifications on the rating plate.