NF FRA51602, Instruction Manual

Page: 49 / 286

3.2 Input and output connectors
3
-
11
FRA 51602
！
WARNING
Do not apply voltages that exceed the rated isolation voltage. Doing so may result in
insulation breakdown and risk of electrical shock. Damage to the instrument may also
result.
The maximum input voltage is restricted according to the frequency as described below. Applying high
voltages at high frequencies may result in a large AC current flowing in floating capacitance within the
instrument, creating a risk of damage to the equipment. Be certain to use the instrument at voltages below
the rated isolation voltage.
○ Maximum input voltage by frequency
Below 45 Hz : 600 Vpk (AC+DC)
45 Hz to 100 kHz : 600 Vrms
100 kHz to 2 MHz : 600 Vrms (AC) × 100 ÷ F, where F is frequency in kHz
For frequencies of 45 Hz or higher, the RMS voltage including DC is 600 Vrms or less and the peak
voltage is 849 Vpk or less.
Frequency vs Maximum Input Voltage (CH1,CH2)
10
100
1k
1 10 100 1k 10k 100k 1M 10M
Frequency [Hz]
M
a
x
im
u
m
I
n
p
u
t
V
o
lt
a
g
e
[
V
]
AC Vrms
(AC+DC)
Vpk
DC
～
Figure 3-5 Maximum input voltage of the analysis module input connectors by frequency
This rating is for when there is no transient overvoltage. For measurements in commercial mains circuits
were entrancing over voltages can occur, use the MEASUREMENT CATEGORY specifications
described previously.