The gure below illustrates the connection box from the inside. The power connections are
located in the upper part of the connection box. The lover part incorporates the low voltage signal
cablings (winding temperature, bearing temperature and resolver) from the low voltage
connectors as well as the anti condensation heater connector. For further information see
Chapters Low voltage (measurement signal) connections and Anti condensation heater
connections.
Figure 19. Inside view of the machine connection box
The connection box(es) of the electric machine are in xed position, they can't be rotated or
changed with each other.
Leave the connection box cover plate open for further electrical assembly, instructed in Chapter
Cable gland assembly and power line connection.
Connection diagram
The electric machines are intended to be powered and controlled by three-phase alternating
current, supplied by an inverter or inverters. The electric machine is not suitable for direct online
use.
For an electric machine with option DUAL (two three-phase systems), the electrical connection
principles from the inverters are shown in Figure below.
For an electric machine with connection option other than SINGLE, the electrical connection
principles from the inverters are shown in the Figure below. See also Wiring Diagram. The amount
of inverters depends upon the motor and converter current ratings.
EM-PMI540-T1500
6. Installation
34 |
©
Danfoss | Produced By: Danfoss Power Solutions | January 2019
| BC265856800806en-000106
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