Uni-T UTD4302C [5/99] General safety rules

UNI-T

UT4000 User Manual

General Safety Rules

This unit is designed and manufactured strictly in accordance with GB4793 safety

requirements for electronic testing meters and IEC61010-1 safety standards. It fully meets

CAT II 600V insulation and overvoltage requirements and Grade II anti-pollution safety

standards. To prevent personal injuries and damage of this unit or any other devices

connected to it, please take note of the following safety precautions. To avoid potential

hazards, use this unit strictly as instructed by this User Manual.

Maintenance should only be carried out by a trained professional.

To avoid fire and personal injury :

Use a correct power cable : Use only the specified power cable which is authorized in

the country of use.

Remove the plug correctly : Do not remove the probe or testing cable when they are

connected to power.

Ensure good grounding : This unit is grounded by the ground wire of the power cable.

To avoid electric shock, the grounding conductor must touch the ground. Before

connecting the input or output terminal, ensure the unit is properly grounded.

Connect the probe of the digital storage oscilloscope : The probe ground cable is the

same as ground potential. Do not connect the ground cable to high voltage.

Check the rated values of all terminals : To prevent fire and excessive current shock,

please check all rated values and label data. Read the manual carefully and check the

rated values before connecting the unit.

Do not operate the unit with the chassis cover open : Do not operate this unit when the

outer cover or front panel is open.

Use suitable fuses : Only use specified fuse types and rated specifications.

Avoid exposing circuitry : When power is on, never make contact with exposed adaptor

or components.

When fault is suspected, stop operation : If you suspect a fault, ask a qualified

maintenance professional to carry out inspection.

Maintain good ventilation.

Do not operate in humid condition.