Mastech MS5201 Manuale utente

DIGITAL INSULATION TESTER

OPERATOR’S MANUAL

CONTENTS

1. SAFETY INFORMATION ……………1

1.1 PRELIMINARY ……………2

1.2 DURING USE ……………3

1.3 SYMBOLS ……………4

1.4 MAINTENANCE ……………5

2. DESCRIPTION ……………6

2.1 NAMES OF COMPONENTS ……………9

2.2 SWITCH AND BUTTONS ELUCIDATE ……………10

3. SPECIFICATIONS ……………11

3.1 GENERAL SPECIFICATIONS ……………11

3.2 ELECTRICAL SPECIFICATIONS ……………12

4. OPERATING INSTRUCTION ……………16

4.1 SWITCH DISLOCATION ALARM ……………16

4.2 SOUND AND FLASH ALARM ……………16

4.3 READ HOLD ……………17

4.4 HAND OPERATING AND TIME MEASURING ……………17

4.5 PREPARATION FOR MEASUREMENT ……………18

4.6 MEASURING INSULATION RESISTANCE ……………19

4.7 MEASURING AC VOLTAGE ……………22

4.8 MEASURING DC VOLTAGE ……………24

4.9 MEASURING RESISTANCE ……………26

4.10 CONTINUITY TEST ……………27

5. MAINTENANCE ……………29

5.1 BATTERY REPLACEMENT ……………29

5.2 TEST LEADS AND TEST CLIPS REPLACEMENT ……………30

6. ACCESSORIES ……………31

1. SAFETY INFORMATION

This meter has been designed in general to comply with IEC 348 and

according to IEC-1010 concerning about electronic measuring instruments

with an overvoltage category 1000V CAT ΙΙ, 600V CAT Шand pollution 2.

Follow all safety and operating instructions to ensure that the meter is used

safely and is kept in good operating condition.

Pay attention to cautions and warnings, which will inform you of potentially

dangerous procedures.

WARNING

To ensure safe operation, please follow the directions in this section

carefully.

Electricity can cause severe injuries even with low voltages or currents.

Therefore it is extremely important that you read the following information

before using this Insulation Tester.

1.1 PRELIMINARY

1.1.1 When using the meter, the user must observe all normal safety rules

concerning:

•Protection against the dangers of electrical current

•Protection of the meter against misuse

1.1.2 When the meter is delivered, check that it has not been damaged in

transit.

1.1.3 When poor condition under harsh preservation or shipping conditions

caused, inspect and confirm this meter without delay.

1.1.4 test leads or test clips must be in good condition. Before using verify

that the insulation on test leads or test clips is not damaged and/or the

leads wire is not exposed.

1.1.5 Full compliance with safety standards can be guaranteed only if used

with test leads or test clips supplied. If necessary, they must be

replaced with the same model or same electric ratings.

1.1.6 This meter must only be used by a competent trained person and in

strict accordance with the operator’s manual.

1.2 DURING USE

1.2.1 Never exceed the protection limit values indicated in specifications for

each range of measurement.

1.2.2 When the meter is linked to a measurement circuit, do not touch

unused terminals.

1.2.3 Do not measure voltage if the voltage on the terminals exceeds 1000V

above earth ground.

1.2.4 Always be careful when working with voltages above 60V DC or 30V

AC rms, keep fingers behind the probe barriers while measuring.

1.2.5 Never connect the meter leads across on live circuits while the function

switch is in the insulation resistance, resistance or continuity mode.

1.2.6 Ensure all circuits are de-energized before measuring.

1.2.7 Before rotating the range switch to change ranges, disconnect test

leads from the circuit under test.

1.2.8 If any faults or abnormalities are observed, the meter can not be used

any more and it has to be checked out.

1.2.9 Never use the meter unless the rear case is in place and fastened fully.

1.2.10 Please do not store or use meter in areas exposed to direct sunlight,

high temperature, humidity or condensation.

1.3 SYMBOLS

Important safety information, refer to the operating manual.

Double insulationProtection classΙΙ.

Earth ground

Low Battery

~ AC (alternating current)

DC (direct current)

Continuity Buzzer

1.4 MAINTENANCE

1.4.1 Please do not attempt to adjust or repair the meter by removing the rear

case while voltage is being applied. A technician who fully understands

danger involved should only carry out such actions.

1.4.2 Before opening the battery cover of the meter, always disconnect test

leads or test clips from all sources of electric current.

1.4.3 Always set the function switch to the OFF position when the meter is

not in use.

1.4.4 If the meter is to be stored for a long period of time, the batteries should

be removed to prevent damage to the unit.

1.4.5 Do not use abrasives or solvents on the meter, use a damp cloth and

mild detergent only.

2. DESCRIPTION

- This meter has the function of

sound and flash alarm. If the

function switch and range

switch is out of place, you will

hear a humming sound per

two seconds from the inside

alarming system. This

protection provides for meter

to avoid damage by operation

improperly.

- In measurement, the test

button is pressed, the meter’s

alarming system will give out a humming sound (per two seconds), and the

red high voltage output indicator is flashing, which warns the operator to

pay attention to the high output voltage, and avoid getting electric shock.

- Overload protection and low battery indication is provided.

- This meter is a portable professional measuring instrument with large LCD.

- This meter has function of data hold.

- When using, it can show ranges engineering unit enunciators measuring

results.

- A double rotary switch is used to select functions and ranges.

- Test button with lock function.

- Releasing the test button automatically will discharge the capacitance of a

circuit under test.

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