6.3 Measurement examples
87
6
Chapter 6 Measurements
When network B1 or B2 (Other test condition, Special test condition) is
selected and measurement conducted with 110% voltage application
(, )
1. Connect the instrument and the equipment under test.
See "3.3 Connecting equipment under test to the instrument" (p. 36)
2. Connect test leads to terminals T1, T2 and T3.
See "5.1 Connecting the Test Lead" (p. 75)
3. Position the tip of the test lead connected to terminal T1 and T2 on the enclosure of the equip-
ment under test.
4. Position the tip of the test lead connected to terminal T3 on an ungrounded signal input section
or signal output section of the equipment under test.
5. During manual measurement, is available upon return to the measurement screen. Press
to start touch current (enclosure - enclosure) measurement during a single-fault condition.
Pressing applies a high voltage to the test lead connected to the T3 terminal.
Press to terminate output of high voltage.
During automatic measurements, becomes available upon return to the measurement
screen. Press to start touch current (enclosure - enclosure) measurement under the sin-
gle-fault condition.
Only is available during automatic measurements.
• Note that when is pressed in automatic measurement mode, the
instrument generates high voltage without displayed on the screen.
• To avoid the risk of electric shock when a test lead is connected to the T3
terminal, do not touch the part of the test lead that is beyond the finger
barrier. The T3 terminal outputs high voltages.
Do not touch any part of
the test lead beyond the
finger barrier
The terminal block is not used for internally powered equipment. However,
power must be supplied to this instrument’s [LINE IN] connector to obtain high
voltage from Terminal T3.
Do not connect the equipment under test to an outlet or the terminal block since
power is supplied from an outlet during a 110% voltage application test.
Terminals T1, T2,
and enclosure
1
2
3
4
5
Terminal T3 and I/O terminal
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