T1689 Technical Manual Rev 07
CDM Assembly
MV3000 Air Cooled DELTA
DELTA TRANSISTOR MODULE POWER CONNECTIONS
Page 123
5.13
DELTA TRANSISTOR MODULE POWER CONNECTIONS
5.13.1
General
•
The a.c. and d.c. terminals on the modules are not suitable to support the weight of any attached
cables. These cables must have additional mechanical support;
•
The bending radii limits of all cables must be respected.
Refer to Appendix C: Recommended Torque Settings for torque settings.
5.13.2
A.C. Connections
The a.c. power terminals are located on the front of the module (see Figure 2–7), and are marked A, B and C.
To gain access, the three shrouds must be removed. The A and B phase shrouds are secured with two “snap”
type rivets. The C phase shroud also covers the d.c. connections and is secured with four ‘snap’ type rivets.
Each terminal provides one M10 stud, which is suitable for ring-crimp connection.
5.13.3
D.C. Connections
The d.c. link terminals are located in the lower front of the module (see Figure 2–7), and are marked DC+ and
DC-.
The d.c. shroud also covers the C phase a.c. connection and is secured with four ‘snap’ type rivets.
Each terminal provides one M10 insert, which requires an M10 bolt with plain and spring washers for
connection.
To avoid stressing the d.c. terminals when connecting these together with a single busbar, ensure that DELTA
transistor modules are fully inserted and are correctly aligned.
5.13.4
Earth Connection
The earth terminal is a single M10 threaded insert, located on the lower front of the module and identified as
shown in Figure 5–12.
Figure 5–12. - Protective Earth (ground) symbol
5.13.5
Fitting Shrouds
The shrouds for the A and B phase terminals are secured with ‘snap’ type rivets as shown in Figure 5–12.
The shroud for the C phase d.c. power connection are secured with ‘snap’ type rivets
as shown in Figure 5–12.
All shrouds must be fitted after the connections have been made.
