Elma Instruments 5706445250929, Manual

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Kyoritsu 8035 sid 22
Measurement categories(Over-voltage categories)
To ensure safe operation of measuring instruments, IEC 61010 establishes
safety standards for various electrical environments, categorized as CAT I
to CAT IV, and called measurement categories.
Higher-numbered categories correspond to electrical environments with
greater momentary energy, so a measuring instrument designed for
CAT III environments can endure greater momentary energy than one
designed for CATII.
CAT I
: Secondary electrical circuits connected to an AC electrical outlet
through a transformer or similar device.
CAT II : Primary electrical circuits of equipment connected to an AC
electrical outlet by a power cord.
CAT III : Primary electrical circuits of the equipment connected directly to
the distribution panel, and feeders from the distribution panel to
outlets.
CAT IV
: The circuit from the service drop to the service entrance, and to
the power meter and primary overcurrent protection device
(distribution panel).
Features
● This is a Phase indicator and can indicate a presence of live lineand phase sequence
with the equipped LED and Buzzer while clipping the 3-phase line over the jacket of a
conductor.
● Brightness switch is equipped to make the indication visible in dimly lit areas.
● A magnet on the backside of the instrument can fix the instrument ontothe distribution
board and enables safety and easy measurements.
● Designed to International safety standard IEC 61010-1 (CAT.III 1000V/ CAT.IV, 600V,
Pollution degree 2).