WARNING
Incorrect connection to the mains
Damage to the mains network, short circuit!
▷ Observe the technical specifications of the local energy supply companies.
1. Check the available mains voltage against the data on the motor name plate.
2. Select an appropriate start-up method.
NOTE
A motor protection device is recommended.
5.8.1 Setting the time relay
CAUTION
Switchover between star and delta on three-phase motors with star-delta starting
takes too long.
Damage to the pump (set)!
▷ Keep switch-over intervals between star and delta as short as possible.
Table 11: Time relay settings for star-delta starting:
Motor rating Y time to be set
[kW] [s]
≤ 30 < 3
> 30 < 5
5.8.2 Earthing
DANGER
Electrostatic charging
Explosion hazard!
Damage to the pump set!
▷ Connect the PE conductor to the earthing terminal provided.
▷ Provide for potential equalisation between the pump set and foundation.
5.8.3 Connecting the motor
NOTE
In compliance with IEC 60034-8, three-phase motors are always wired for clockwise
rotation (looking at the motor shaft stub).
The pump's direction of rotation is indicated by an arrow on the pump.
1. Match the motor's direction of rotation to that of the pump.
2. Observe the manufacturer's product literature supplied with the motor.
5 Installation at Site
MegaCPK
31 of 74
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