COBRA
Frequency
Highest permissible
motor power for
direct network
connection
Highest permissible
motor power using a
frequency converter
NC 0100 B
50 Hz
3 kW
4 kW
60 Hz
4 kW
7,5 kW
NC 0200 B
50 Hz
5,5 kW
7,5 kW
60 Hz
7,5 kW
11 kW
NC 0300 B
50 Hz
7,5 kW
11 kW
60 Hz
9,2 kW
11 kW
Motor mounting instructions
Before the mounting of the motor, the coupling must be installed bet-
ween the motor and the vacuum pump. Respect the Installation and
Operating Instructions of the coupling. Regarding the explosion pro-
tection, the coupling must show at least the same protection degree
like the vacuum pump for the outside category (“outside” (o)). See the
nameplate of the vacuum pump. Concerning the explosion group and
the temperature class, a higher protection degree can be applied. But
only Busch original couplings should be used.
Motor mounting
The motor is fixed to the center flange of the pump thank to 4 screws.
Installation
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