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4.4 Grounding
ELECTRICAL HAZARD
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You must ground all electrical equipment. This applies to the pump equipment, the driver and any
monitoring equipment. Test the ground lead to verify that it is connected correctly.
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If the motor cable is jerked loose by mistake, the ground conductor should be the last conductor to
come loose from its terminal. Make sure that the ground conductor is longer than the phase
conductors. This applies to both ends of the motor cable.
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Risk of electrical shock or burn. You must connect an additional ground fault protection device to the
grounded connectors if persons are likely to come into physical contact with the pump or pumped
liquids.
WARNING
To prevent damaging the pump and causing current leakage, which may lead to electrical shock, be sure to
install the ground wire securely.
CAUTION
To prevent electrical shock caused by improper grounding, do not connect the ground wire to a gas pipe,
water pipe, lightning rod, or telephone ground wire.
These are the requirements to follow when you install cables:
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The cables must be in good condition, not to have any sharp bends, and not be pinched.
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The sheathing must not be damaged and must not have indentations or be embossed (with markings, etc.) at the
cable entry.
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The cable entry seal sleeve and washers must conform to the outside diameter of the cable.
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The minimum bending radius must not be below the accepted value.
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If using a cable which has been used before, a shod piece must be peeled off when refitting it so that the cable entry
seal sleeve does not close around the cable at the same point again. If the outer sheath of the cable is damaged, then
replace the cable. Contact the manufacturer service shop.
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The voltage drop in long cables must be taken into account. The drive unit's rated voltage is the voltage measured at
the cable connection point in the pump.
WARNING
Before connecting the cable to the terminal board, make sure that the power supply (i.e. circuit breaker) is
properly disconnected. Failure to do so may lead to electrical shock, short or injury caused by the
unintended starting of the pump.
4.5 Connecting the cables
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Summary of Contents for KTM Series
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