NF FRA51602, Инструкция по эксплуатации

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3.2 Input and output connectors
3
-
10
FRA 51602
Using a BNC connector that has exposed metal parts rather than the insulated BNC cable that is provided
with this instrument may expose the user to high voltages and the risk of electrical shock. The coaxial
BNC cable that is provided with this instrument is designed for safety. When dealing with dangerously
high voltages that exceed 30 Vrms or 42Vpk, be certain to use the provided cable.
The maximum isolation 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 isolation 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 Isolation Voltage (CH1,CH2)
10
100
1k
1 10 100 1k 10k 100k 1M 10M
Frequency [Hz]
Iso
la
ti
o
n
V
o
lt
a
g
e
[
V
]
AC Vrms
(AC+DC)
Vpk
DC
～
Figure 3-4 Isolation withstand voltage of the analysis module input connectors by frequency
This rating is for when there is no transient overvoltage. For measurements in mains circuits where
transient overvoltages can occur, use the MEASUREMENT CATEGORY specifications described
previously.