− 2 −
7. When using the test leads, keep your fingers behind the
barrier of the test probe and the barrier of the alligator clip.
8. During measurement, do not change the function or range.
9. Before starting measurement, make sure that the function and
range are properly set in accordance with the measurement.
10. Never use the tester when it is wet or with wet hands.
11. Do not use the tester in a place where corrosive or
explosive gas is produced.
12. Never attempt repair or modification, except for battery
replacement.
13. To ensure safety and maintain accuracy, check the tester
in the start-up inspection as well as in the inspection to be
performed at least once a year.
14. Wear insulating protective gear when using the tester with
equipment containing a hazardous live part. Also be sure
to observe your local and national safety rules.
15. Always use the tester in a specified method to prevent the
protective function from being imperiled.
1-3 Overload Protection Input Values
Function
Input terminals
Max. rated
input value
Max. overload
protection input
ACV
E - S(P)
AC 400 V
AC 400 V
Ω
E - S(P)
Voltage input
prohibited
AC 400 V
Ω
E - H(C)
Voltage input
prohibited
Voltage input
prohibited
[2] APPLICATIONS AND FEATURES
2-1 Applications
This is an Earth Tester designed for measurement within the range
specified as CAT.II 400 V / CAT.III 300 V in IEC61010.
2-2 Features
• Safety design compliant to IEC61010.
• 3-pole / 2-pole earth resistance measurement.
• High portability carrying case
• Backlight function