Major tech MT560 Bedienungsanleitung

INSTRUCTION MANUAL

DIGITAL

INSULATION TESTER

MT560

Contents Page no

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

2. Safety Symbols..................................................................................4

3. Specifications....................................................................................4

3.1. General Information.................................................................4

3.2. Electrical Specifications............................................................5

4. Parts & Control..................................................................................7

4.1. How to connect test leads.........................................................7

4.2. Battery Check-UP & Replacement...............................................7

4.3. Test leads check.......................................................................7

4.4. Rotary Switch positions.............................................................7

4.5. Buttons and a display Indicators................................................7

4.6. Resistance (Auto-ranging)........................................................7

5. Insulation Resistance Measurements...................................................8

6. Low Resistance (Continuity)Measurements..........................................9

7. AC/DC Voltage Measurements............................................................9

8. Battery Saver (Sleep Mode)................................................................9

9. Power Tools and Small Appliances........................................................9

1. SAFETY INFORMATION

• Read the following safety information carefully before attempting to

operate or service the meter.

• To avoid damages to the instrument do not apply the signals which

exceed the maximum limits shown in the technical specifications tables.

• Do not use the meter or test leads if they look damaged. Use extreme

caution when working around bare conductors or bus bars.

• Accidental contact with the conductor could result in electric shock.

• Use the meter only as specified in this manual; otherwise, the protection

provided by the meter may be impaired.

• Read the operating instructions before use and follow all safety

Information.

• Caution when working with voltages above 60V DC or 30V AC RMS. Such

voltages pose a shock hazard.

• Before taking resistance measurements or testing acoustic continuity,

disconnect circuit from main power supply and all loads from the circuit.

2. SAFETY SYMBOLS

Caution refer to this manual before using the meter.

Dangerous voltages.

Meter is protected throughout by double insulation or

reinforced insulation.

When servicing, use only specified replacement parts.

CE Comply with EN-61010-1

3. SPECIFICATIONS

3.1. General Information

Environment conditions:

1. Installation Categories III

2. Pollution Degree 2

3. Altitude up to 2000 meters

4. Indoor use only

5. Relatively humidity 80% max.

6. Operation Ambient 0~40ºC

Maintenance & Cleaning:

1. Repairs or servicing not covered in this manual should only be

performed by qualified personnel.

2. Periodically wipe the case with a dry cloth. Do not use abrasives or

solvents on this instruments.

Accuracies are specified in the way:

±(…% of reading +…digits) at 23ºC ±5ºC, below 80% RH.

Display Large LCD with dual display

Measurement Range 4000MΩ/125V, 4000MΩ/250V, 4000MΩ/500V,

4000MΩ/1000V, 400Ω/BZ, to 500V, decreasing

linearly to ≤1.5 at 1000V, 1000V/DCV, 750V/ACV

Sampling Rate 2.5 times per second.

Zero Adjustment Automatic adjustment.

Over Range Indicator "OL" of highest digit is displayed.

Low Battery Indication The is displayed when the battery Voltage

drops below the operating voltage.

Operating Temperature 0ºC to 40ºC (32ºF to 104ºF) and Humidity

below 80% RH

Storage Temperature -10ºC to 60ºC (14ºF to 140ºF) and Humidity

below 70% RH

Batteries 6 x AA

Dimensions 200(L) x 92(W) x 50(H) mm

Weight Approx. 700g including battery

Accessories Test Leads, 6 Batteries, Carrying Case, Manual.

Function Range

3.2. Electrical Specifications

OHMS

Range Resolution Accuracy Max. open Overload

Circuit Protection

Voltage

40.00Ω 0.01Ω 5.8V

±(1.2%+3) 250Vrms

400.0Ω 0.1Ω 5.8V

Continuity Beeper

Range Resolution Accuracy Max. open Overload

Circuit Protection

Voltage

0.01Ω Resistance≤35Ω 5.8V 250Vrms

Short circuit current ≧200mA

DC Voltage

Range Resolution Accuracy Input Overload

Impedance Protection

1000V 1V ±(0.8%+3) 10MΩ 1000Vrms

AC Voltage (40Hz~400Hz)

Range Resolution Accuracy Input Overload

Impedance Protection

750V 1V ±(1.2%+10) 10MΩ 750Vrms

Meg OHMS

Terminal Range Resolution Accuracy Test Short

Voltage Current Circuit

Current

125V 0.125~4.000MΩ 0.001MΩ ±(2%+10) 1mA ≤1mA

(0%~ 4.001~40.00MΩ 0.01MΩ ±(2%+10) @load

+10%) 40.01~400.0MΩ 0.1MΩ ±(4%+5) 125kΩ

400.1~4000MΩ 1MΩ ±(5%+5)

250V 0.250~4.000MΩ 0.001MΩ ±(2%+10) 1mA ≤1mA

(0%~ 4.001~40.00MΩ 0.01MΩ ±(2%+10) @load

+10%) 40.01~400.0MΩ 0.1MΩ ±(3%+5) 250kΩ

400.1~4000MΩ 1MΩ ±(4%+5)

500V 0.500~4.000MΩ 0.001MΩ ±(2%+10) 1mA ≤1mA

(0%~ 4.001~40.00MΩ 0.01MΩ ±(2%+10) @load

+10%) 40.01~400.0MΩ 0.1MΩ ±(2%+5) 500kΩ

400.1~4000MΩ 1MΩ ±(4%+5)

1000V 1.000~4.000MΩ 0.001MΩ ±(3%+10) 1mA ≤1mA

(0%~ 4.001~40.00MΩ 0.01MΩ ±(2%+10) @load

+10%) 40.01~400.0MΩ 0.1MΩ ±(2%+5) 1MΩ

400.1~4000MΩ 1MΩ ±(4%+5)

4. PARTS & CONTROLS

1. Digital Display

2. Data Hold Button; MAX/MIN

3. Lock Button

4. Backlight Button; ZERO

5. Test Button

6. Rotary Function switch

7. VΩ Jack

8. COM input jack

9. Pothook

10. Battery Cover

4.1. How to connect test leads.

On MΩ Range, and 400Ω/BZ, ACV, DCV, Connect the red test lead into the

"VΩ" terminal and the black lead into the "COM" terminal.

4.2. Battery Check-UP & Replacement

a) As battery power is not sufficient. LCD will display . Replacement of

6 pcs new batteries, type 1.5V size "AA" is required.

b) Place back the battery cover and four the screws.

4.3. Test leads check

Set the range select switch to the 400Ω range. With the tip and alligator

clip of the test leads connected. The indicator should read 00.0Ω. When

the leads are not connected the display will read infinity indicated by "OL".

This will ensure that test lead are under working condition.

4.4. Rotary Switch positions

Turn the Tester on by selecting any measurement

Lift ＜ 1000V, 500V, 250V, 125V (4000MΩ)

OFF 400Ω/ , 1000VDC, 750VAC ＞ Right

4.5. Buttons and a display Indicators

a) Button

HOLD/MAX.MIN: Press the “HOLD” button to ensure the current values

are held on the primary display. Once held on the display, hold down the

button for 2 seconds for the display to read the “MAX” value. Click again to

view the “MIN” value. Hold down the button for 2 seconds to exit.

LOCK: In the insulation resistance testing function, press the

"LOCK" button, and then push down the "TEST" key, it will allow hands

free operation to inject the high-voltage and enter the insulation resistance

testing status. Press the "TEST" button once more, it will shut off the high-

voltage and exit from the insulation resistance testing status.

TEST: In the insulation resistance testing function, pressing and

holding the "TEST" button, the meter will inject high-voltage, and

enter into the insulation resistance testing, release the "TEST" button and it

will cut off the high-voltage and exit form the insulation resistance testing.

ZERO/LIGHT: Press the “ZERO/LIGHT” button, the current values in the

primary display will be set to zero, (mainly used for 400Ω, the low

resistance testing), it will return if the button is pressed for 2 seconds, it

will enter directly into the “LIGHT” status, and the LCD backlight light up.

After 15 seconds, the backlight is shut off automatically, the same as

pressing for 2 seconds within 15s.

b) Display Indicators

The Primary Display： Indicates the current function testing values

The Secondary Display： It shows the output DCV while you test the

insulation resistance, and the battery voltage while the ACV

The Analog Bar： Indicates the current function testing value in

synchronous with the primary display.

:While testing the insulation resistance, the symbol " “ flashes

frequently if the voltage is over 30V.

: While testing the insulation resistance, the symbol " " flashes

frequently and the buzzer warns continually if the outside voltage is

over 30V. the symbol " " is indicated while LOΩ≤35Ω and the

buzzer warns continuously.

LOCK: Push down the "LOCK" button while you test the insulation

resistance and the symbol " " is indicated.

LOBAT： The display shows "LOBAT" when the voltage drops below 7.5V

MAX/MIN: Stand for the maximum or the minimum.

ZERO: Digital zero adjusting.

HOLD:The digital holding function for the primary display.

AC，DC: The indicator for the voltage property.

V，MΩ，Ω: The measured dimension units.

5. INSULATION RESISTANCE MEASUREMENTS

a) Turn the function switch from the "OFF" position to the left (4000MΩ/

1000V, 4000MΩ/500V, 4000MΩ/250V, 1000MΩ/125V) and choose one

of the voltage-block (there are 4 ranges namely, 4MΩ, 40MΩ, 400MΩ

and 4000MΩ can be switched automatically for every voltage-block.)

b) Connect two testing lines to the tested；

c) Push down and hold the "TEST" button /or press the "LOCK" keystoke

first and then the "TEST" button, if the object under test is live and its

voltage (AC/DC) is over 30V, it will refuse to work and no high-voltage

testing occurs, simultaneously, it shows ">30V" on the LCD, the symbol

" “ flashes, and the buzzer warns frequently. If the object under test

or its voltage is lower than 30V, it will enter into the formal testing

process and inject the high-voltage on the primary display, the

insulation resistance in MΩ is indicated in-phase with analog bar; on

the secondary display, the tested insulation voltage in V (DC) is

indicated, the symbol " " flashes and the buzzer warns frequently

d) Hands free operation "TEST" button or pushing down the "TEST"

button in the "LOCK” status can exit from the "LOCK" status and

shutoff the high-voltage，synchronously, the resistance values is

indicated in the primary display will be held, and the secondary display

still be in the status of monitoring the insulation voltage for the tested.

e) Subsequently, discharge the balance insulation voltage of the tested

through the inner switch of the meter. Turning the function switch can

exit automatically from testing status during the process.

6. LOW RESISTANCE (CONTINUITY) MEASUREMENTS

a) Set the range switch to 400Ω/ Position

b) Connect the red test lead to the VΩ terminal and black to the COM

terminal.

c) Connect the tips of the test leads to both ends of the circuit under test,

read resistance in Ω on the LCD. The two ranges (40.00/400.0Ω) can

be switched automatically; the primary display of the resistance in Ω,

flashes in synchronous with the analog bar.

d) When the impedance on circuit is below approximately ≤35Ω. It will

indicate by a continuous beeper.

e) The current isfrom200 to 220mA while the tested resistance is 0Ω

f) The high voltage symbol " " flashes along with a primary display of

">30V" and the buzzer warns frequently if the voltage (AC/DC) is more

than 30V.

7. AC/DC VOLTAGE MEASUREMENTS

a) Set the range switch to ACV or DCV position

b) Connect red test lead to "VΩ" terminal and black test lead to terminal

"COM".

c) Connect test prods of test leads IN PARALLEL to the circuit being

measured.

d) Read the voltage value on LCD.

8. BATTERY SAVER (SLEEP MODE)

The meter will automatically enter the "sleep mode" if there is no function

change or button press for 10 minutes, but it works as soon as you turn

the rotary function switch or push down any button.

9. POWER TOOLS AND SMALL APPLIANCES

This test would also apply to other similar equipment that has a line cord.

For double insulated power tools, the megohmmeter lead shown

1010

connected to the housing would be connected to some metal part lf the

tool (e.g. chuck, blade).

Note: The switch of the device must be in the "ON" position and the

main power should be disconnected.

MOTORS

AC-Disconnect the motor from the line by disconnecting the wires at the

motor terminals or by opening the main switch. If the main switch is used

and the motor also has a starter then the starter must be held, by some

means, in the "ON" position. In the latter case, the measured resistance

will include the resistance of the motor, wire and all other components

between the motor and the main switch. If a problem is indicated, the

motor and other components should be checked individually. If the motor

is disconnected at the motor terminals, connect one megohmmeter lead

to the grounded motor housing and the other lead to one of the motor

leads. DC-Disconnect the motor from the line. To test the brush rigging,

field coils and armature connect one megohmmeter lead to the grounded

motor housing and the other lead to the brush on the commutator. If the

resistance measurement indicates a problem, raise the brushes off the

commutator and separately test the armature, field coils and brush

rigging by connecting one megohmmeter lead to each of them

individually, leaving the other connected to the grounded motor housing.

The above also applies to DC Generators.

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