8
vacon • 58 INSTALLATION INSTRUCTIONS
Tel. +358 (0) 201 2121 • Fax +358 (0)201 212 205
8.1 Cable installation and the UL standards
To meet the UL (Underwriters Laboratories) regulations, a UL-approved copper cable with a
minimum heat-resistance of +60/75
°C must be used. The cable must be suitable for use on a circuit
capable of delivering not more than 100,000 rms symmetrical amperes, 600V maximum. Use Class
1 wire only.
The tightening torques of the terminals are given in Table 19.
* Tightening torque of terminal connection to the isolative base in Nm/in-lbs. NOTE: This value is needed only
if the motor connection is made directly to the converter (no devices between converter and motor).
** Apply counter torque to the nut on the other side of the terminal when tightening/loosening the terminal
screw in order to avoid damage to the terminal.
Table 19. Tightening torques of terminals
Type Frame
Tightening torque
[Nm]
NX_2 0261—0300
NX_5 0261—0300
NX_6 0125—0208
FR9 40/22*
NX_5 0385—1450 FR10-14 40**
NX_6 0261—1180 FR10-14 40**
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