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Расширенная инструкция Страница: 4

AXIOMET AX-174 Расширенная инструкция онлайн [4/19] 527862

1. GENERAL INSTRUCTIONS

This instrument complies with IEC 61010-1:2001, CAT III 1000V and CAT IV 600V overvoltage

standards. See Specifications. To get the best service from this instrument, read carefully this

user’s manual and respect the detailed safety precautions. International symbols used on the Meter

in this manual are explained in chapter 1.2.

1.1. Precautions safety measure

1.1.1. Preliminary

*As the possibilities of high transient overvoltages occurred in today’s power system increase,

more stringent safety standards are set for the electrical test equipment. Transients on electrical

system (power grid, feeder or branch circuits) will trigger a series of incidents that may result in

serious personal injury. To protect you against transient, safety must built into the test equipment.

Overvoltage

category

In brief Examples

CAT I

Electronic

•

Protected electronic equipment

• Equipment connected to (source) circuits In chich

measures are taken to limit transient overvoltages to

an appropriately low level.

• Any high-voltage, low-energy source derived from

a highwinding resistance transformer, such as the

high-voltage section of a copier

CAT II

Single

phase

receptacle

connected loads

•

Applience,

portale tools, and Rother household and

similar loads.

• Outlet and long branch circuits.

• Outlets At more than 10 meters (30feet) from CAT

III

• Outlets At more that 20 meters (60 feet) from CAT

IV source

CAT III

Three

phase

distribution,

including single-

phase commercial

lighting

•

Equipment in fixe

installations, such as

switchgear

and polyphase motors.

• Bus and Fedder in industrial plants

• Feeders and short branch circuits, distributions

panel devices.

• Lighting system in Langer buildings.

• Appliance outlets with short connections to service

entrance

CAT IV

Three

phase

utility connection,

any outdoor

conductros

•

Refers to the „origin of installation”; ie.,

where

low-voltage connection is made to utility power.

• Electricity meters, primary overcurrent protection

equipment

• Outsider and service entrance, service drop from

pole to building, run between meter and panel.

• Overhead line to detached building, underground

line to well pump.

*When using this multimeter, the user must observe all normal safety rules concerning:

- protection against the dangers of electric current

AXIOMET AX-174 Расширенная инструкция онлайн [4/19] 527862

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