Major tech MT775 Bedienungsanleitung

MT775

AC/DC TRMS

CLAMP METER

INSTRUCTION MANUAL

Contents Page no

1. Safety ..................................................................................... 4

2. Description ............................................................................ 5

2.1. Meter Description .............................................................. 5

10. Temperature Probe Replacement ..................................... 14

4.3. Resistance Measurement ............................................... 11

5.4. REL/Backlight Button....................................................... 14

3.2. General Specifications ...................................................... 9

4.4. Diode and Continuity Measurements............................... 11

4. Operation ............................................................................. 10

7. Maintenance ........................................................................ 14

3.1. Specifications ................................................................... 7

4.2. AC/DC Voltage Measurement ......................................... 11

5.2. RANGE Button ................................................................ 13

2.2. Symbols Used on LCD Display ...........................................6

4.8. Non-Contact AC Voltage Measurements ......................... 13

4.1. AC/DC Current Measurement ......................................... 10

8. Cleaning and Storage .......................................................... 14

9. Battery Replacement .......................................................... 14

3. Specifications ........................................................................ 7

5. Button ................................................................................... 13

4.5 .Capacitance Measurements ........................................... 12

4.6. Frequency or % Duty Cycle Measurements .................... 12

5.3. PEAK/VFD Button ........................................................... 13

5.5. Data Hold/Flashlight Button ............................................. 14

5.1. MODE/INRUSH Button ................................................... 13

6. Battery Replacement ........................................................... 14

4.7. Temperature Measurements ........................................... 12

This symbol, adjacent to a terminal, indicates that, under

normal use, hazardous voltages may be present.

Double insulation.

This symbol, adjacent to another symbol or terminal, indicates

the user must refer to the manual for further information.

1. Safety

1.1. lnternational Safety Symbols

• When changing ranges using the selector switch always disconnect the

test leads from the circuit under test.

• Set the function switch OFF when the meter is not in use.

• Remove the battery if the meter is to be stored for long periods.

• Do not exceed the maximum rated input limits.

1.4. CAUTIONS

• Inspect the condition of the test leads and the meter itself for any

damage before operating the meter. Repair or replace if damaged before

use.

1.3. WARNINGS

• Do not exceed the maximum allowable input range of any function.

• Set function switch to the appropriate position before measuring.

1.2. SAFETY NOTES

• Do not apply voltage to meter when resistance function is selected.

• When measuring volts do not switch to current/resistance modes.

• Always remove the test leads before replacing the battery.

• Use great care when making measurements if the voltages are greater

than 25VAC RMS or 35VDC. These voltages are considered a shock

hazard.

• Improper use of this meter can cause damage, shock, injury or death.

Read and understand this user manual before operating the meter.

• Always discharge capacitors and remove power from the device under

test before performing Diode, Resistance or Continuity tests.

• Voltage checks on electrical outlets can be difficult and misleading

because of the uncertainty of connection to the recessed electrical

contacts. Other means should be used to ensure that the terminals are

not “live”.

• If the equipment is used in a manner not specified by the manufacturer,

the protection provided by the equipment may be impaired.

2. Input Limits

4. Relative / Backlight Button

1. Current Clamp

3. Clamp Trigger

2.1. Meter Description

2. Non-Contact AC Voltage Indicator

Light

5. LCD Display

6. MODE / INRUSH Select Button

2. Description

13. COM Input Jack

7. RANGE Button

11. Battery Cover

9. Rotary Function Switch

14. VΩHz% CAP TEMP Jack

10. Data Hold / Flashlight Button

12. Flashlight

8. PEAK / VFD Button

A AC/DC

V AC/DC

Frequency, Resistance,

Diode, Continuity,

Capacitance Test

Temperature

1000A

1000V DC/AC

1000V DC/ AC

Function Maximum Input

WARNING

TO AVOID ELECTRICAL

SHOCK REMOVE TEST

LEADS BEFORE OPENING

CASE OR BATTERY COVER.

DO NOT OPERATE WITH

BATTERY COVER OPEN.

1.5V AAAX3

13 14

Hz%

Temp

°C°F

CAP

OFF

LoZ V

Hz%

600A 1000A

AC TRMS CLAMP METER

AUTO POWER OFF

CAT III 1000V

CAT IV 600V

CAP

V Hz%

Temp

COM

REL

MODE RANGE PEAK

INRUSH

8. Auto Range Mode

14. Variable Frequency Drive Voltage Value

15. Units of Measure List

1. Low Impedance Input Mode

5. Low Battery

9. Diode Test Mode

12. Relative Mode

16. Frequency/Duty Cycle Test Mode

11. Peak Voltage Value

4. AC (Alternating Current)

7. Auto Power Off

10. Audible Continuity

2. DC (Direct Current)

3. Minus Sign

6. Inrush Current Mode

13. Data Hold Mode

17. 6000 Count Measurement Reading

2.2. Symbols Used on LCD Display

7 8 910 11 12 13 14

3.1. Specifications

3. Specifications

Range & Resolution

600.0A

1000A

Accuracy ±(% of reading+digits)

±(2.5% + 8 digits)

±(2.8% + 8 digits)

Function

AC Current

(50/60Hz)

600.0A

1000V ±(2.8% + 5 digits)

DC Current ±(2.5% + 5 digits)

Inrush current Maximum Input: 1000A.

Over range protection: Maximum input 1000A.

Frequency Response: 50Hz to 60Hz True RMS.

Accuracy specified from 5% to 100% of the measuring range.

6.000V

60.00V

600.0V

1000V

±(1.5% + 5 digits)

AC Voltage

(50-400Hz)

AC voltage bandwidth: 50 to 400Hz (Sine); 50/60 (All wave).

Maximum Input: 1000V AC RMS.

Variable frequency Drive TEST AC voltage range: 100V - 600V.

Accuracy specified from 5% to 100% of the measuring range.

VFD, PEAK Maximum Input: 1000V.

Range & Resolution

Accuracy ±(% of reading+digits)

Function

6.000V

60.00V

300.0V

±(3.0% + 40 digits)

LoZ AC

Voltage

Maximum Input: 300V AC

Range & Resolution

Accuracy ±(% of reading+digits)

Function

600.0mV

6.000V

60.00V

600.0V

1000V

±(0.5% + 5 digits)

±(1.5% + 2 digits)

DC Voltage

Maximum Input: 1000V DC

Range & Resolution

Accuracy ±(% of reading+digits)

Function

60.00nF

600.0nF

6.000µF

60.00µF

600.0µF

6.000mF

60.00mF

100.0mF

±(4.0% + 20 digits)

±(3% + 5 digits)

±(5% + 5 digits)

±(5% + 8 digits)

±(5% + 15 digits)

Capacitance

Input Protection: 300V DC or 300V AC RMS.

Range & Resolution

Accuracy ±(% of reading+digits)

Function

600.0Ω

6.000KΩ

60.00KΩ

600.0KΩ

6.000MΩ

60.00MΩ

±(1.0% + 4 digits)

±(1.5% + 2 digits)

±(2.5% + 3 digits)

±(3.5% + 5 digits)

Resistance

Input Protection: 300V DC or 300V AC RMS.

Range & Resolution

Accuracy ±(% of reading+digits)

Function

Note: Accuracy is given as ±(% of reading + counts of least significant digit) at 23°C ±5°C,

with relative humidity less than 80%RH. AC voltage and current shall be subject to sine

wave.

9.999Hz to 99.99kHz ±(1.2% + 5 digits)

Frequency

Sensitivity:

=>5VRMS

Range & Resolution

Accuracy ±(% of reading+digits)

Function

10.0% to 90.0% ±(1.2% + 2 digits)

Duty Cycle

Sensitivity:

=>5VRMS

Input Protection: 300V DC or 300V AC RMS.

Range & Resolution

Accuracy ±(% of reading+digits)

Function

-20.0 to 1000°C

-4.0 to 1832°F

±(3% + 5°C)

±(3% + 9°F)

Temp

(Type-K)

(Probe accuracy not included)

Input Protection: 300V DC or 300V AC RMS.

Range & Resolution

Accuracy ±(% of reading+digits)

Function

Clamp Size

Diode Test

Overrange Indication

TRMS

Continuity Check

Low Battery Indication

Measurements Rate

Input Impedance

Display

AC Current

AC Voltage Bandwidth

Operating Temperature

Storage Humidity

Operating Altitude

Over Voltage

Operating Humidity

Weight

Auto Off

Safety

Dimensions

Battery

Storage Temperature

3.2. General Specifications

33mm approx

2 per second, nominal

<80%

2000 meters maximum.

250 x 78 x 40mm

Three (3) x 1.5V AAA Battery

50 - 400Hz (VAC)

-20 to 60°C (-4 to 140°F)

50 - 60Hz (AAC)

Approx. 30 minutes

For indoor use and in accordance with the

requirements for double insulation to

IEC1010-1 (2001): EN61010-1 (2001)

Overvoltage Category III 1000V and Category

IV 600V, Pollution Degree 2.

10M (VDC and VAC)

5 to 40°C (41 to 104°F)

Category IV 600V

Test current of 0.3mA typical; Open circuit

voltage 3.2V DC typical.

350g

The AC voltage and AC current of this

instrument are measured by TRMS. True RMS

measurement is different from mean

measurement. The mean measurement

method can only measure the symmetric

waveform, such as sine wave. True RMS

measurements can reliably measure any

irregular waveform and obtain valid values for

AC voltage or AC current.

“OL” is displayed

6000 counts LCD

Threshold <=50Ω; Test current < 0.5mA

“ ” is displayed

Max 80% up to 31°C decreasing linearly to

50% at 40°C

CorrectIncorrect

2. If the range to be measured is not known, select the higher range first

then move to the lower range if necessary.

3. Press the trigger to open jaw. Fully enclose one conductor to be

measured.

1. Set the Function switch to the 1000A AC/DC, 600A AC/DC range.

4. The clamp meter LCD will display the reading.

4. Operation

NOTICES: Read and understand all warning and precaution statements

listed in the safety section of this operation manual prior to using this

meter. Set the function select switch to the OFF position when the meter is

not in use.

4.1. AC Current Measurements

WARNING: Ensure that the test leads are disconnected from the meter

before making current clamp measurements.

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