6 | Electrical Connection
22 | 48
Instruction Manual COBRA NC 0100-0300 B ACV_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 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.
6.2
Machine delivered with a Variable Speed Drive
(Option)
DANGER
Live wires. Carry out any work on the variable speed drive and motor.
Risk of electrical shock!
●
Electrical installation work must only be executed by qualified personnel.
DANGER
Maintenance work without disconnecting the variable speed drive.
Risk of electrical shock.
●
Disconnect and isolate the variable speed drive before attempting any work on it.
High voltages are present at the terminals and within the variable speed drive for up to 10 min-
utes after disconnection of the electrical supply.
●
Always ensure by using a suitable multimeter that no voltage is present on any drive power termi-
nals prior to commencing any work.
