Circutor OPTIM 9 P&P-225-440, Instruction Manual

Page: 19 / 40

5.2.2. TIGHTENING TORQUE OF THE ELECTRICAL CONNECTIONS
The connections must be tight.
The tightening torques for the fuse bases, circuit breakers and the contactors are indicated in
Table 3
,
Table 4
and
Table 4.
Table 2:Tightening torques of the cables to the fuse bases.
Fuse base Torque (Nm)
NH-00 15.2
Table 3:Torques of power cables to two-pole and three-pole circuit breakers.
Circuit breaker Torque (Nm)
In ≤ 3 x 63 A 2
In ≤ 2 x 6 A 2
Table 4:Torques of cables to connector terminals
Model Auxiliary (Nm) Power (Nm)
CMC-12 1.3 1.6
CMC-18 1.3 2.2
CMC-32 1.3 2.9
CMC-40 1.3 2.9
CMC-50 1.3 4.5
CMC-65 1.3 4.5
CMC-75 1.3 4.5
CMC-85 1.3 5.1
CMC-150 1.3 9
5.2.3. KEY POINTS FOR INSPECTING CONTACTORS

Check that the plastic parts are not blackened and do not show signs of burning or hardening.

Check that the head is properly inserted.

Check the tightness of cables and terminals, as shown in
Table 4
.

The terminals must be clean.

If the capacitor bank includes RD discharge resistors, check they are in good condition (that
they are not open or show signs of burning). (
Figure 11
)
19
Instruction Manual
OPTIM P&P Series