3-20
Figure 3-24
Cable fixing example
(1) (2)
(3) (4)
(1) Flat washer
(2) Flat washer
(3) Spring washer
(4) Fastening nut
z
Fix the terminal of harder power cables to free the terminal and the cable from stress;
z
No tapping screw can be used to fasten the cabling terminals;
z
The power cables of the same type and in the same direction should be bound together and kept
clean and straight;
Follow the parameters defined in the following table for binding cables with ties.
Table 3-4
Tie-binding parameters
Cable bundle diameter
Space between bundles
10 mm (0.39 in.)
80 mm to 150 mm (3.15 in. to 5.91 in.)
10 mm to 30 mm (0.39 in. to 1.18 in.)
150 mm to 200 mm (5.91 in. to 7.87 in.)
30 mm (1.18 in.)
200 mm to 300 mm (7.87 in. to 11.81 in.)
z
No cable or bundle can tie a knot;
z
The metal parts of crimping cold-pressed terminal blocks (such as air switch) cannot stretch
beyond the blocks.
Checking the Installation
Confirm that you have turned off the power before check; otherwise, improper connection will hurt
people or the component of the switch.
After installing the switch, please check if the items listed in the following table are normal.