KB Electronics KBIC-240DS - Manual (Page 14)

14
6 RECOMMENDED HIGH VOLTAGE DIELECTRIC WITHSTAND TESTING (HI-POT)
Testing agencies such as UL, CSA, etc., usually require that equipment undergo a hi-pot test. In order
to prevent catastrophic damage to the control, which has been installed in the equipment, it is
recommended that the following procedure be followed. A typical HI-POT test setup is shown in Figure
3, on page 15. All controls have been factory hi-pot tested in accordance with UL requirements.
WARNING! WHEN PERFORMING THE HI-POT TEST, DISCONNECT THE AC POWER.
6.1 Connect all equipment AC power input lines together and connect them to the H.V. lead of the
HI-POT Tester. Connect the RETURN of the HI-POT Tester to the frame on which the control
and other auxiliary equipment are mounted. Refer to Figure 3, on page 15, for further
information.
6.2
The HI-POT Tester must have an automatic ramp-up to the test voltage and an automatic ramp-
down to zero voltage.
Note: If the Hi-Pot Tester does not have automatic ramping, then the HI-POT output must be manually
increased to the test voltage and then manually reduced to zero. This procedure must be followed
for each machine to be tested. A suggested HI-POT Tester is Slaughter Model 2550.
CAUTION! Instantaneously applying the HI-POT voltage will cause irreversible damage to the control.