YOKOGAWA EY200, Руководство пользователя

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Measurement Category
#
WARNING
The instrument is designed for measurement category III.
Do not use the instrument for measurements in locations falling
that fall under measurement category IV.
Measurement
category
Description Remarks
O
(None, Other)
Other circuits that are not
directly connect to MEAINS.
Circuits not
connected to a
mains power source.
CAT II
For measurement preformed on
circuits directly connected to the
low-voltage installation.
Appliances,
portable equipment,
etc.
CAT III For measurement preformed in
the building installation.
Distribution board,
circuit breaker, etc.
CAT IV
For measurement preformed
at the source of the low-voltage
installation.
Overhead wire,
cable systems, etc.
#
WARNING
• Do not use the test leads (98074) for voltages exceeding 33
Vrms, 46 VAC peak or 70 VDC.
• When measuring "earth voltage" , use the 2P test leads (98075)
and the safety alligator clips (CAT III). The 2P test leads when
used together with the test probe fall under category II.
• Do not use the test leads when the test probes or the safety
alligator clips are loose.
Do not use the test leads without the test probes or the safety
alligator clips.