6 | Electrical Connection
18 | 40
Instruction Manual COBRA NX 0450-0650 A WCV_EN_en
●
Busch recommends installing a type B residual protective device suitable for the electrical in-
stallation.
●
Provide a lockable disconnect switch or an emergency stop switch on the power line so that the
machine is completely secured in case of an emergency situation.
●
Provide a lockable disconnect switch on the power line so that the machine is completely secured
during maintenance tasks.
●
Provide an overload protection according to EN 60204-1 for the motor.
●
Connect the protective earth conductor.
●
Electrically connect the motor.
NOTICE
The motor frequency is below 20 Hz.
Risk of damage to the machine!
●
The motor nominal speed must always be higher than 1200 min
-1
(20 Hz).
NOTICE
The admissible motor nominal speed exceeds the recommendation.
Risk of damage to the machine!
●
Check the admissible
motor nominal speed (n
max
) on the nameplate of the machine (NP).
●
Make sure to comply with it.
●
Consult the Technical Data to get more information.
NOTICE
Incorrect connection.
Risk of damage to the motor!
●
The wiring diagrams given below are typical. Check the inside of the terminal box for motor con-
nection instructions/diagrams.
