KB Electronics KBDF-48 - Manual (Page 43)

43
9 HIGH VOLTAGE DIELECTRIC WITHSTAND TESTING (HI-POT TEST)
Testing agencies such as UL, CSA, etc., usually require that equipment undergo a hi-pot test. In
order to prevent catastrophic damage to the drive, which has been installed in the equipment,
the following procedure is recommended. A typical hi-pot test setup is shown in Figure 36.
All drives have been factory hi-pot tested in accordance with UL requirements.
CAUTION! This is an AC Hi-Pot Test for all models except models with built-in RFI (EMI)
filters. On Models KBDF-23F, 24F, 27F only perform a DC Hi-Pot Test.
WARNING! All equipment AC Line inputs must be disconnected from the AC
power.
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 drive and other auxiliary
equipment are mounted.
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 being tested. A suggested Hi-Pot Tester is Slaughter Model 2550.
CAUTION! Instantly applying the hi-pot voltage will cause irreversible damage to the drive,
which will void the warranty.
FIGURE 36
TYPICAL HI-POT TEST SETUP
KBDF SERIES
IMPORTANT!
RUN
FWD
REV
STOP
CAUTION!