MR VACUTAP - Page 74

7 Maintenance
Maschinenfabrik Reinhausen GmbH 202074 5788897/03 ENVACUTAP
®
VVS
®
Perform the DC resistance measurement in various on-load tap-changer op-
erating positions. You need to distinguish here whether the measured cur-
rent is interrupted when changing operating position or not.
Status of oil compart-
ment
Without interruption in
measured current
With interruption (mea-
sured current = 0A be-
fore change of operating
position)
Oil compartment empty Maximum 10A DC Maximum 50A DC
Oil compartment filled with
insulating fluid
Maximum 50A DC Maximum 50A DC
Table7: Maximum permitted measured currents when performing DC resistance measurement
on transformer