Voltech AT3600 User Manual page 351

V AT3600 U
OLTECH SER
1.44. DCAT - DC HI-POT R
W
Hi-Pot Ramp testing (to check for insulation breakdown between windings or
between windings and the screen or core) is often specified for power line
transformers or for switched mode power transformers in applications where safety is
important.
It is typically performed between all primary windings connected together, and all
secondary windings plus the screen connected together.
S
During the test, a dc target voltage is applied across two groups of windings with the
windings in each group being shorted together.
monitored throughout the ramp time.
T T C
ESTS AND EST ONDITIONS
M
ANUAL
U
HERE SED
PECIFYING THE
M
EASUREMENT
VPN 98 - 024
T
AMP
The voltage and current are
T
RANSFORMER ESTS
P 7.1.71.
AGE