Pfeiffer Vacuum Hena 26, Руководство по эксплуатации

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The 3 wires are connected in series. Their connection points are connected to the mains. The voltage
per phase is equal to the mains voltage, while the mains current is √3 times the phase current. The del-
ta connection is marked with the
∆ symbol. The voltage between the incoming mains supply lines is
called mains voltage. The mains current is the current flowing in the incoming supply lines.
Connect the three phase motor with delta connection
► Connect the three phase motor according to the connection diagram.
V
L1
L2
L3
W2
U1
U2 V2
V1 W1
Fig. 9: Star circuit
The ends of the 3 phases are connected in the star point. The terminal voltage is √3 times the phase
voltage, the mains current is equal to the phase current. The star circuit is marked with the
Y symbol.
Connect the three phase motor with star circuit
► Connect the three phase motor according to the connection diagram.
5.5.3 Connect three phase motor with 9-pin terminal board
There are 2 different circuit configurations:
● Double star circuit for low voltage
● Star circuit for high voltage
L1
L2
L3
W2 W3 W1
U2 V3 V1
V2 U3 U1
V
Fig. 10: Terminal board for low voltage
The parallel-switched winding strands are arranged in a star layout. The mains current is distributed to
two coils in each case.
Connect the three phase motor with double star circuit
► Connect the three phase motor according to the connection diagram.
L1
L3
L2
W2 W3 W1
V2 V3 V1
U2 U3 U1
V
Fig. 11: Motor winding and terminal board for high voltage
The series-switched winding strands are arranged in a star layout. The mains voltage must be higher by
a factor of 2, the mains current is halved compared to the double star circuit.
Connect the three phase motor with star circuit
► Connect the three phase motor according to the connection diagram.
Installation
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