3-6
TOS5051A/5050A
Table3-1
Discharge time
The tester has an internal circuit to discharge the residual high voltage of its output
circuit when the output is turned off. Do not disconnect the DUT from the tester
during a test. If you do, the residual high voltage on the DUT will remain undis-
charged for a long period.
3.4
Warnings for Remote Control
Be extremely careful when operating the tester in the remote control mode in which
the dangerous high test voltage is turned ON/OFF remotely. Provide protective
means as follows:
•
Provide means to assure that the test setup does not output voltage
inadvertently (TEST state).
•
Provide means to assure that no one can touch the DUT, test leads,
probes, output terminals and their vicinities when high voltage is being
output (TEST state).
3.5
Inhibitions
3.5.1
Inhibition of Rapid ON/OFF Repetitions
After turning OFF the power switch, be sure to allow several seconds or more
before turning it ON again. Do not repeat the operation of turning ON/OFF the
power switch rapidly. If you do, the protectors of the tester may not be able to ren-
der their protective functions properly. Do not turn OFF the power switch without
turning OFF the output switch
fi
rst. Do this only in case of emergency.
3.5.2
Inhibition of Shorting to Earth Ground
Pay attention so that the high test voltage line is not shorted to a nearby AC line or
nearby devices (such as conveyors) which are connected to an earth ground. If it is
shorted, the tester chassis can be charged up to a hazardous high voltage.
Be sure to connect the protective grounding terminal of the tester to an earth line. If
this has been done correctly, the tester will not be damaged and its chassis will not
be charged up to the high voltage even when the HIGH output terminal is shorted to
the LOW output terminal.
For your safety, be sure to ground the tester. For a description of the grounding
method, see section 2.6, “Grounding (Earth)” (Page 2-6 ).
Test voltage
Discharge time
Note
TOS5051A alone
5 kV
Approx. 16 ms
Time until the output terminal voltage
of the TOS5051A attenuates to 30 V
DUT
Approx. 50 ms
Time until the DUT voltage attenu-
ates to 30 V
Содержание TOS5050A
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