
6.3 Measurement examples
85
6
Chapt
er 6 Measureme
nt
s
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 T2 and T3.
See
"5.1 Connecting the Test Lead" (p. 75)
3.
Position the tip of the test lead connected to terminal T2 on an ungrounded enclosure section of
the equipment 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 - earth) 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 - earth) measurement under the single-
fault condition.
Only
is available during automatic measurements.
• Note that when
is pressed in automatic measurement mode, the instru-
ment generates high voltage without
displayed on the screen.
•
To avoid the risk of electric shock when a test lead is connected to the T3 ter-
minal, 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, although power
must be supplied to [LINE IN] by a grounded two-plug power cord. Also, high
voltage occurring at Terminal T3 depends on this power source.
When the instrument is set to internally powered equipment, 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.
1
2
3
4
5
Terminal T2 and
enclosure
Terminal T3 and I/O terminal
Содержание ST5540
Страница 2: ......
Страница 6: ...Contents iv Index i ...
Страница 29: ...23 2 Chapter 2 Instrument Labels and Screens Instrument Labels and Screens Chapter 2 ...
Страница 80: ...4 8 Changing the Measurement Method Auto Manual 74 ...
Страница 121: ...115 8 9 7 Chapter 7 Instrument System Settings Instrument System Settings Chapter 7 ...
Страница 144: ...7 14 Setting the Backlight 138 ...
Страница 284: ...10 14 Measurement Networks 278 ...
Страница 290: ...11 4 Instrument Disposal 284 ...
Страница 320: ...Appendix4 External Dimensions A30 ...
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