Hioki MR8740, Instruction Manual

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3.1 Ensuring Measurement Safety
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Be sure to observe the following points, to ensure safe measurement.
Measurement
Procedure
Chapter 3
3.1 Ensuring Measurement Safety
The maximum rated input voltage and maximum rated voltage versus ground
values for input modules and connection cables are listed in the table below. In
order to prevent the risk of electric shock and damage to the equipment, make
sure that these voltages are not exceeded.
The maximum rated voltage versus ground does not change also when an atten-
uator or similar is used at the input. Take the connection method into consider-
ation and make sure that the rating is not exceeded.
Input module
Maximum rated
input voltage
Maximum rated voltage
versus ground
8966 Analog Unit 400 V DC 300 VAC/DC (CAT II)
8967 TEMP Unit - 300 VAC/DC (CAT II)
8968 High Resolution Unit 400 V DC 300 VAC/DC (CAT II)
8969 Strain Unit - 33 V rms / 70 V DC
U8969 Strain Unit - 30 V rms / 60 V DC
8970 Freq Unit 400 V DC 300 V AC/DC (CAT II)
8971 Current Unit - Not insulated.
8972 DC/RMS Unit 400 V DC 300 V AC/DC (CAT II)
8973 Logic Unit - Not insulated.
MR8990 Digital Voltmeter Unit 500 V DC AC/DC 300 V (CAT II)
U8974 High Voltage Unit
1000 V DC 1000 V AC/DC (CAT III)
700 V AC 600 V AC/DC (CAT IV)
MR8740/
MR8741
Memory HiCorder
Input module
GND
Maximum rated
input voltage
H
L
Maximum rated volt-
age versus ground