Delta 4000 Instruction Manual Page 64

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M
81331 Rev 01 Nov 2010
56
Hot Collar Tests
12 test lines are provided on this form for Hot Collar Tests on the primary
bushing(s), if desired.
These tests measure the outer shell insulation of the bushings, including surface
leakage and leakage current from the bushing surface through the insulating
material to the center conductor. A conductive strap is placed around the
bushing, below one of the skirts and connected to the HV lead. The Red lead is
connected to the bushing conductor. Test mode is GST-GND.
Multiple hot collar tests can be performed on each bushing. For each test, the
location of the strap should be clearly indicated on the form.
Multiple Quick Tests
Standards measurements may be complemented with additional measurements
executed from the Multiple Quick Test sub-form selected as a new test or as
manual measurements in the standard test forms. Check “Manual” in the select
test boxes and a Multiple Quick Test table will be added at the end of the form.
In the field "INSULATION TESTED" you enter information on what to be
tested, TEST MODE set/change the test mode, SUPPRESS set/change noise
suppression mode.
It is also possible to use Delta Control for controlling the test by clicking the
Delta Control button (above the table) in PowerDB form, Delta Control will
send all data to be stored in the Multiple Quick Test table.
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