Mastech m266f инструкция на русском

M266F

1. Safety information

DIGITAL CLAMP MULTIMETER

The meter is completely portable, LCD, 3 1/2 digit clamp

meter with insulation test function (with option 500V

OPERATOR’S INSTRUCTION MANUAL

insulation tester unit). It has been designed according

to IEC1010-1 IEC1010-2-032 concerning electronic

measuring instruments with an overvoltage category

(CAT II 1000V & CAT III 600V) and pollution 2 and safety

requirements for hand-held current clamps for electrical

measurement and test.

Follow all safety and operating instructions to ensure

that the meter is used safely and is kept in good

operating condition.

1.1 Preliminary

When using this meter, the user must observe all normal

safety rules concerning:

HOLD

MAX 1000A~

Protection against the dangers of electronic current.

CAT ll 1000V

CAT lll 600V

266F CLAMP METER

Protection of the meter against misuse.

WITH 261 OPTION(500V)

INSULATION TESTER

A~

OFF 2000M

Full compliance with safety standards can be

1000

EXTERNAL

UNIT

200

20M

Ω

guaranteed only if used with test leads supplied. If

Hz

2k

2M

necessary, they must be replaced with the same model

200

200

or same electronic ratings. Measuring leads must be in

V~

20

750

good condition.

2k

1000

1.2 During Use

200

200

20

Never exceed the protection limit values indicated in

2

V

V~

Ω

specifications for each range of measurement.

BAT

When the meter is linked to measurement circuit, do not

touch unused terminals.

When the value scale to be measured is unknown

CAT ll 6100V

beforehand, set the range selector at the highest position.

VΩ

COM

EXT

Before rotating the range selector to change function,

CAT ll

750V~

1000V

MAX

disconnect test leads from the circuit under test.

When carrying out measurements on TV or switching

power circuits always remember that there may be high

amplitude voltage pulses at test points, which can

damage the meter. Never perform resistance

measurements on live circuits.

Always is careful when working with voltage above 60V

dc or 30V ac rms. Keep fingers behind the probe barriers

while measuring.

1.3 Symbols

Important safety information, refer to the

operating manual.

Dangerous voltage may be present.

Double insulation ( Protection class II ).

Application around and removal from

HAZARDOUS LIVE conductors is permitted.

Earth ground.

1.4 Maintenance

Before opening the meter, always disconnect test leads

from all sources of electric current.

If any faults or abnormalities are observed, the meter

can not be used any more and it has to be checked out.

Never use the meter unless the back cover and the

battery cover are in place and fastened fully.

Do not use abrasives or solvents on the meter, use a

damp cloth and mild detergent only.

01

02

2. Description

FRONT PANEL

This meter is one of a series portable 3 1/2 digital clamp

meter for measuring DC and AC Voltage, AC current,

resistance, continuity test and insulation test. Some models

also provide frequency or temperature test. Full overload

protection. Low battery indication and over-range indication

are providing. Following table shows function of the series

of clamp meter.

FUNCTION

M266

M266F M266C

※

※

※

ACV DCV

※

※

※

ACA

※

※

※

Ω

※

※

※

※

※

※

※

INSULATION

※

TEMPERATURE

※

FREQUENCY

1. TRANSFORMER

JAWS

2. BARRIER OR

TACTILE INDICATOR

3. DATA HOLD SWITCH

4. TEMPERATURE

MEASURING SOCKET

03

2.1 Function and Range selector

A rotary switch is used to measurement functions and

ranges. When the switch is set to OFF position, the

meter does not operate.

2.2 Transformer Jaws

Pick up the AC current flowing through the conductor.

Press the TRIGGER to open the transformer jaws.

When the finger press on the TRIGGER is released, the

jaws will close again.

HOLD

MAX 1000A~

CAT ll 1000V

2.3 Data Hold

CAT lll 600V

266F CLAMP METER

WITH 261 OPTION(500V)

INSULATION TESTER

A~

Depress HOLD Button Switch to toggle in and out of the

OFF

2000M

1000

EXTERNAL

UNIT

200

20M

Ω

Hz

Data Hold mode. Releasing Data Hold mode again press

2k

2M

the button.

200

200

V~

20

750

2.4 Input Jacks

2k

1000

200

200

This meter has three input jacks that are protected

20

2

V

V~

Ω

against overload to the limits shown.

BAT

During use connect the black test lead to COM jack and

connect red test lead to V

Ω

jack. The red test lead is

depended on function selected.

CAT ll 6100V

VΩ

COM

EXT

The EXT jack is used for accept insulation tester unit

CAT ll

750V~

1000V

MAX

EXT banana Plugs, when measurement insulation

resistance.

5. ROTARY SWITCH

3. Operating Instruction

6. LCD DISPLAY

3.1 Measuring Current

7. DROP-PROOF

1. Set the rotary switch at desired A~ range position.

WRIST STRAP

Press the trigger to open the transformer jaws and

8. INPUT JACKS

clamp onto one conductor only (Fig1), The

transformer jaws pick up the AC current flowing

9. TRIGGER

through the conductor.

04

05

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