CIRCUTOR OPTIM P&P Series - Manual (Page 19)

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 12 )
19 Instruction Manual
OPTIM P&P Series