KS 3-2010
Page 7
a. If there is no evidence of looseness, e.g., overheating, do not disturb or tighten the connections.
b. If there is evidence of overheating (as noted in 4.2) or arcing, an investigation of the cause
should be made and corrective steps taken. (See
Section 5.)
Figure 1
Pitting
Figure 2
Heat Damage
4.3.2.5 Examine the switch for evidence of a high short circuit closing operation. Any of the following
observations will warrant performing the Section 6 Test Procedures or the replacement of the
switch. In some cases, switch interior renewal parts can be obtained from the manufacturer to
bring the assembly back to a serviceable condition.
© Copyright 2010 by the National Electrical Manufacturers Association.
To Next Page
Loading...
