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must at least be capabable to provide 100 Amps on each phase or
have a impedance of Z[ohm]=0,15+0,15*i.
• Load-breaking switches in accordance with IEC 898, with B or C
characteristic, are recommended for circuit protection. If such
switches are not available, protection can be provided by IEC 269-1
fuses, characteristics gG or gM.
• Vacuum pumps, fans, pumps and motors located in separate rooms
away from the common service area of the installation must have
their own individual multi-pole, lockable, safety-marked switches. A
switch of this description must always be installed close to the motor.
• Vacuum pumps and pumps for liquids: First make sure that the
feedwater tanks and pipework are filled with water. Then check that
the direction of rotation of the pump is correct by briefly operating
the pump contactor by hand. Correct this as shown in the drawing
below.
• Fans and three-phase motors: check that the direction of rotation
is correct by briefly operating the motor contactor by hand. Correct
this as shown in the drawing below.
• Correcting the direction of rotation: Swap two of the phase wires
in the supply cable between the motor and the contactor. For some
equipment the “contactor” may take form of a frequency converter
or soft-starter.
• It is recommended that the three-phase supply should be protected by
an earth leakage circuit breaker with a 300 mA trip current.
ESD (Electrostatic discharge)
ESD damage
ESD is an overall term describing how electronic circuits are damaged
by the static charging to which they are exposed when they come into
contact with electrically charged objects. Virtually all non-earthed
objects in the world around us have a static charge. Equipment and peo-
ple are imperceptibly charged by friction in the air or between shoes and
Running the shaft seal dry could destroy it in just a few
seconds.
ESD damage in installation and servicing may destroy the
electronic equipment. Read the instructions below
BEFORE starting work.
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