Simpson 270-5, Инструкция по эксплуатации

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e. Connect the test leads across the cir-
cuit voltage to be measured with the
black lead to the grounded side.
f. Turn on power.
g. For the 2.5V range, read the value
directly on the scale marked 2.5 VAC.
For the 10V, 50V, and 250V ranges,
read the red scale marked AC and
use the black figure immediately
above the scale. For the 500V range,
read the red scale marked AC and
use the 0-50 figures. Multiply the
reading by 10.
Turn off power to the circuit and wait until
the meter indicates zero before discon-
necting the test leads.
4.10 AC Voltage Measurement
0-1000V Range
Use extreme care when working in high voltage circuits. Do not handle the
Instrument or test leads while the circuit being measured is energized. OB-
SERVE ALL SAFETY PRECAUTIONS in paragraph 4.1 and in the instruction
manual for the equipment being tested.
Do not attempt any circuit-to-ground voltage measurement which may exceed
1000 volts.
Be sure that the range switch is set to the 500V/1000V range, function switch to
AC position, and test leads connected to common and 1000V jack.
Do not touch the Instrument or test leads while the power is on in the circuit being
measured.
a.
Set the function switch at AC (Figure 4-3).
b. Set the range switch at 500/1000V position.
c. Plug the black test lead into the - COMMON jack and the red test lead in the
1000V jack.
d. Check that the power is off in the circuit being measured and that all its
capacitors have been discharged.
e. Connect the test leads across the circuit voltage to be measured with the
black lead to the grounded side, if any.
f. Turn on the power in the circuit being measured.
g. Read the voltage on the red scale marked AC. Use the 0-10 figures and
multiply by 100.
COMMON COMMON
ALL TERMINALS IKV. MAX
270
2.5V.
1V.
10V.
50V.
AMPS
250V.
500V.
1000V
A.C.
1000V.
A.C. D.C.
WARNING
READ MANUAL BEFORE USE
Figure 4-3. Jacks and Switch
Positions for measuring AC
Voltages
!
!