MEWOI MEWOI1310B, User Manual, Page: 5 / 16

1
Precaution For Use
Thanks you for purchasing our MEWOI1310B Large Caliber Wireless H/L Voltage U-Type
Current Meter . In order to better for use of the product, please be certain:
——Read this user manual in detail, the operators must fully understand the manual
instructions and be able to operate the instrument skillfully, and then can field testing.
——Strictly comply with the safety rules and precautions listed in this manual.

Under any circumstance, shall pay special attention on safety in using this meter. Especially
when measuring voltage circuit over AC100V and above.

If the tested line voltage over 600V, it must be used insulation rod to connection.

Because the high voltage circuit is very dangerous, the operator must be strictly trained and
obtain the national high voltage operation certification before using the meter for field test.

It is strictly forbidden to use this meter to test bare wires or busbars with voltage over 500kV.

Pay attention to the text labeled on the panel and backplane of the Meter.

Do not place and store the meter in high temperature and humidity or dewy places and
under direct sunlight for a long time.

Replace the battery, please pay attention to the battery polarity. If you not use the leaker for
a long time, please take out batteries.

Disassembly, calibration, and repair of this tester must be performed by authorized
personnel.

If meter`s components are damaged, Please stop to use.

Due to the reason of this instrument, if it is dangerous to continue using, should stopped and
sealed immediately ,and handled by an authorized institution.

The meter manual with the danger mark " ", users must follow instructions to operate
safely.

The meter manual with the extremely dangerous mark " ", users must in strict follow
instructions to operate safely.

It is recommended that the meter should make insulation strength test at least once a year
(AC 220kV/ RMS telescopic insulation rod is fully opened between the two ends).