Overvoltage Category I (CAT I):
Equipment for connection to circuits in which measures are taken to
limit the transient overvoltages to an appropriate low level.
Overvoltage Category II (CAT II):
Energy-consuming equipment to be supplied from the fixed
installation.
Overvoltage Category III (CAT III):
Equipment in fixed installations, distribution boards, and circuit breakers.
Overvoltage Category IV (CAT IV):
Origin of installation or utility level measurements on primary over-current
protection devices and on ripple control units.
SAFETY INFORMATION: (Read First Before Operation)
Please follow the following instructions carefully for safe operation.
■ NEVER use the clamp meter for Voltages higher than 600V.
■ DO NOT hold the clamp meter beyond its tactile barrier.
■ DO NOT use the clamp meter and accessories if they look
damaged.
■ USE CAUTION when working with high voltages.
■ USE CAUTION when measuring the voltages higher than
30VAC rms or 60VDC. These voltages pose a shock hazard.
■ USE EXTREME CAUTION when working around bare
conductors or bus bars.
■ ALWAYS use the clamp meter as the instructions in the manual.
WARNING: If the clamp meter is used in a manner
Not specified by the manufacturer, the protection
Provided by the clamp meter may be impaired.
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