Kyoritsu Electrical Instruments Works KEW 8121 Instruction Manual

INSTRUCTION MANUAL
KEW 8121
CLAMP SENSOR
CLAMP SENSOR
KEW 8121/8122/8122WP/8123
KYORITSU ELECTRICAL INSTRUMENTS
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.
1.800.561.8187
KEW 8122 KEW 8123
KEW 8122WP
Series
WORKS, LTD.
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1. Safety warnings

○ This instrument has been designed, manufactured and tested
according to IEC 61010: Safety requirements for Electronic Measuring
apparatus, and delivered in the best condition after passing quality
control tests. This instruction manual contains warnings and safety
rules which have to be observed by the user to ensure safe operation
of the instrument and to maintain it in safe condition.
Therefore, read through these operating instructions before using the
instrument.
# WARNING
● Read through and understand instructions contained in this manual
before using the instrument.
● Keep the manual at hand to enable quick reference whenever
necessary.
● The instrument is to be used only in its intended applications.
The operating instructions described in the manual must be
observed.
● Understand and follow all the safety instructions contained in the
manual.
It is essential that the above instructions are adhered to. Failure to
follow the above instructions may cause injury and or instrument
damage.
The symbol # indicated on the instrument, means that the user
must refer to the related parts in the manual for safe operation of the
instrument. It is essential to read the instructions wherever the # symbol
appears in the manual.
# DANGER is reserved for conditions and actions that are likely to
cause serious or fatal injury.
# WARNING is reserved for conditions and actions that can cause
serious or fatal Injury.
# CAUTION is reserved for conditions and actions that can cause
minor injury or instrument damage.

5. Operating instructions

# DANGER
● Never make measurement on a circuit in which the electrical
potential exceeds AC300V when using KEW 8121 and AC600V
using KEW 8122/ 8122WP and 8123 in order to avoid possible
shock hazard.
● The transformer jaws are made of metal and their tips are not
completely insulated. Be especially careful about the possible
shorting where the measured object has exposed metal parts.
# CAUTION
● Take sufficient care to avoid shock, vibration or excessive force
when handling the instrument. Otherwise, precisely adjusted
transformer jaws will be damaged.
● When transformer jaws do not fully close, never try to close them
by force, but make them free to move and try again. If a foreign
substance is stuck in the jaw tips, remove it.
● Do not force to open the Transformer jaws when they are frozen.
● When making current measurements, keep the transformer jaws
fully closed.
Otherwise, accurate measurements cannot be taken.
Maximum conductor size is as follows.
KEW 8121 : 24mm in diameter
KEW 8122WP : 40mm in diameter
KEW 8123 : 55mm in diameter
● Hold the inserting part (except for the cable) and disconnect the
Output connector from the measuring instrument so as not to cause
a break in the cord.
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