TOS93 Series User’s Manual 13
No. Name Function See
1
DANGER LED Lights red when the power is turned on, when a test is in progress, when
a high voltage is being output, or when there is residual voltage at the
output terminals. On the TOS9303LC, the LED also lights red when
supply voltage is being supplied to the EUT.
–
2
Area for withstanding voltage,
insulation resistance, and partial
discharge tests
1
–
p.29
HIGH VOLTAGE terminal Outputs the test voltage of the high voltage side. –
LOW terminal Outputs the test voltage of the low voltage side (with cable lock). –
3
Area for earth continuity test –
p.34
OUTPUT HI terminal Outputs the test voltage of the high voltage side. –
OUTPUT LO terminal Outputs the test voltage of the low voltage side. –
SENSING HI terminal Detects the voltage at the sensing terminal (of the high voltage side)
when four-terminal wiring is in use.
–
SENSING LO terminal Detects the voltage at the sensing terminal (of the low voltage side) when
four-terminal wiring is in use.
–
4
Area for leakage current test –
p.41
110% terminal Outputs the voltage applied to the AC LINE IN inlet on the rear panel. –
A and B terminals Measurement terminals for connecting test leads and probes. –
5
USB port (host)
For connecting an external keyboard.
Saves setup memory and test results.
Exporting and Importing Programs.
Updates the firmware.
p.49
p.249
p.232
p.277
6
REMOTE connector For connecting the optional remote control box or test probes.
p.330
7
Controls –
p.14
8
START switch Starts a test. –
9
STOP switch Stops testing and clears the current status. Returns to the HOME menu
screen.
–
10
POWER switch
Turns the power on (
) and off( ).
p.27
1 Partial discharge test is available only on the TOS9301PD.
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