5 Installation at Site
30 of 76
Etaprime L
5.8 Electrical connection
DANGER
Incorrect electrical installation
Explosion hazard!
▷
For electrical installation, also observe the requirements of IEC 60079-14.
▷
Always use a motor protection switch for explosion-proof motors.
DANGER
Electrical connection work by unqualified personnel
Risk of fatal injury due to electric shock!
▷
Always have the electrical connections installed by a trained and qualified
electrician.
▷
Observe regulations IEC 60364 and, for explosion-proof models,
EN 60079
.
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 10:
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.
Summary of Contents for Etaprime L
Page 1: ...Self priming Pump Etaprime L Installation Operating Manual...
Page 74: ......
Page 75: ......
