Simpson 260 Series 8 - AC Voltage Measurement: 0-500 V Range Details; AC Voltage Measurement: 0-1000 V Range

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Do not attempt any voltage measurement which may exceed 1000 volts or the
circuit-to-ground voltage of the Instrument, 1000 volts maximum.
Be sure that the range switch is set to the 250V/500V/1000V range, function
switch to AC volts only position, and test leads connected to common and 500V
jack.
Do not touch the Instrument or test leads while the power is on the circuit being
measured.
Before proceeding with the following steps, review the Safety Precautions in
Paragraph 4.1.
a. Set the function switch to AC
Volts Only position (Figure 4-6).
NOTE: When making AC voltage
measurements with the function switch
incorrectly set to DC, the Instrument
pointer will remain at or near zero, in-
dicating a false “no voltage present”
condition that could be hazardous.
b. Set the range switch at 250V/
500V/1000V position.
c. Plug the black test lead into the –
COMMON jack and the red test
lead in the 500V jack.
d. Be sure the power is off in the
circuit being measured and that
all its capacitors have been dis-
charged.
e. Connect the test leads across the
circuit voltage to be measured
with the black lead to the
grounded side.
f. Turn on the power in the circuit being measured.
g. Read the voltage on the red scale marked AC. Use the 0-50 figures and
multiply by 10.
4.12 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 voltage measure-
ment which may exceed 1000 volts or the circuit-to-ground voltage of the Instru-
ment, 1000 volts maximum.
Be sure that the range switch is set to the 250V/500V/1000V range, function
switch to AC Volts Only position, and test leads connected to common and 1000V
!
!
2.5 V.
10 V.
1V.
25 V.
50 A.
␮ AMPS.
250 V.
500 V.
I000 V.
ZERO OHMS
COMMON
-
A .C . V O LTS
ONLY
A
.C
.
A.C.
260
ALL TERMINALS 1 V MAX
500 V.
A.C. D.C.
5
0
FIGURE 4-6. Jacks and Switch
Positions for Measuring AC Voltage
0-2.5 Through 0-250V Ranges