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DTS-60A / DTS-100A O
PERATORS
M
ANUAL
5.1 Test Description
The DTS-60A & DTS-100A dielectric oil testers support the execution of user programmable testing
scenarios. The main objective of the programmable test is the control of the high voltage on a time
basis. Moreover, the test includes options for controlling the Stirrer and the Breakdown
measurements. In this section, a detailed description of the test program structure, as well as the test
operations are presented.
5.1.1 Test Structure
The Test consists of an
Information Session
, a
Startup Session
, and a
Main Session
.
The
Information Session
contains general details for the test. These are the following:
a. Program Name (up to 12 characters)
b. Electrodes Spacing (mm/in)
c.
Number of Stages (see Main Session)
d. Creation Date/Time
The
Startup Session
refers to the start-up time. This is the period after the starting of the test (after
pressing the ENTER key) until the system enables the output voltage to the oil-sample. The
parameters included in the Startup Session define the Wait Time (SWT) after the start of the test and
the part of this time (or all this time) the enable or disable of the stirrer. The Startup Session includes
the following programmable parameters:
a.
Startup Wait Timer (sec) - SWT
b.
Startup Stirrer Timer (sec) - SST
The
Main Session
consists of a series of a maximum of 30 Stages. Every stage includes a set of
programmable parameters:
a.
Voltage Type (kV or kV/sec)
Two are the possible voltage types. If a rated increase/ decrease is desired, the type refers to
kV/s. If a stable voltage is desired, the type refers to kV.
b.
Voltage Value (kV) or Voltage Rate (kV/s)
c.
Stage Duration (sec)
d.
Stirrer Timer (sec) - ST
This timer starts counting from the beginning of the current stage and enables the stirrer for
the programmed time.
e.
After Breakdown Wait Timer (sec) -ABDWT
After a breakdown occurs, the system will idle for this programmable duration.
f.
After Breakdown Stirrer Timer (sec) -ABDST
After a breakdown occurs, the system will enable the stirrer for this programmable duration.
g.
After Breakdown Stage (0…29, next, end) - ABDSTG
After the above timers the test will proceed to another stage. This programmable parameter
indicates the next stage. The value can be any following stage (eg. If current stage is 10 then
the value could be 11 to 29), next if it is desired to continue to the next stage, or end if it is
desired to stop the test.
h.
Store Breakdown Voltage (yes/no)
If the user selects the yes option, the detected breakdown voltage will be calculated to the
statistics. Otherwise, the detected breakdown voltage will NOT be calculated into the statistics.
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Summary of Contents for DTS-100A
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