Kyoritsu 5020 Instruction Manual Manual de usuario descargar pdf (Pagina 6)

Safety symbols

Refer to the instructions in the manual.

󱛉

Indicates a Instrument with double or reinforced insulation

Indicates that this instrument can clamp on live bare conductors

when the voltage to be tested is below Circuit – Ground-to-Earth

voltage against the indicated Measurement Category.

∼

Indicates AC

Indicates DC

󱛠

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 CAT.II.

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 over-current protection device

(distribution panel).

1 2 3 4 5 6 7 8 9 10 11 ... 55 56

Sin comentarios

Kyoritsu 5020 Instruction Manual Manual de usuario Pagina 6