18
Display of Leakage Limit and Duration settings
To view the Test Duration and Leakage Limit current settings, hold down the
RESET
button for 2 seconds. The meter will display “L” with the Leakage Limit value in mA. Hold
down the
RESET
button again for 2 seconds and the meter will display “d” with the Test
Duration set time in seconds.
Adjustment of the Leakage Current Level
DC Leakage Current can be set to levels of up to 5 mA. To set the leakage limit follow the
steps below.
1.
Connect the HT-2800P to a correctly rated source of supply and turn the power switch to
the I or ON position. Push the
RESET
button. The yellow
TEST
indicator should light,
indicating that the HT-2800P is ready to test.
2.
On the rear panel turn the
Leakage Limit
potentiometer. As soon as the potentiometer
starts turning, the meter will start blinking, display “L”, and the value can be set in 0.1 mA
increments from 1.0 to 5.0 mA.
3.
If tamperproof settings are desired, the
Leakage Limit
control shaft may be pulled away
with a slight tug. (It may be reinserted for future adjustments.)
Adjustment of the High Voltage Ramp Time
This procedure controls the amount of time used to ramp the high voltage to the required
level. The factory setting of two seconds is adequate for most situations. Use this procedure if
adjustment to a different ramp time within the range of <1-5 seconds is required.
1.
Defeat the
Ground Check
by turning the rear panel switch to the Off position.
2.
Connect the HT-2800P to a correctly rated source of supply and turn the power switch to
the I or ON position. Push the
RESET
button. The yellow
TEST
indicator should light,
indicating that the HT-2800P is ready to test.
3.
Make sure there are no test leads connected to the HT-2800P. Push the
TEST
button.
4.
When the
TEST
button is pressed, the voltage will ramp and hold. Adjust the
Ramp Time
control on the rear panel until the desired ramp time is reached. The test can be terminated
at any time by pressing the
RESET
button.
5.
If tamperproof settings are desired, the
Ramp Time
control shaft may be pulled away with
a slight tug. (It may be reinserted for future adjustments.)
6.
Check the position of the
Ground Check
switch before testing.
Adjustment of the High Voltage Level
This procedure controls the high voltage level used in the dielectric withstand test. It is
specified by safety agency personnel. Most safety agencies will allow a shorter test (usually 1
sec. vs. 1 min.) if the voltage is increased by 20%. The HT-2800P is factory set for 1700 volts, a
voltage level used for the one second test for many types of equipment. Consult the safety
agencies for the required voltage level for the type of equipment being tested. If a different
voltage level is required, use this procedure to set it.
1.
Defeat the
Ground Check
by turning the rear panel switch to the Off position.
2.
Adjust the Test Time control to approximately the middle of its travel.
3.
Connect the HT-2800P to a correctly rated source of supply and turn the power switch to
the I or ON position. Push the
RESET
button. The yellow
TEST
indicator should light,
indicating that the HT-2800P is ready to test.
Summary of Contents for HT-2800P
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