Megger IDEAL 61-791 Bedienungsanleitung

#61-791

MEGGER®

Hand-held Insulation & Continuity Tester

99 Washington Street

Melrose, MA 02176

Fax 781-665-0780

TestEquipmentDepot.com

SAFETY WARNINGS

✱Safety warnings and precautions must be read and

understood before the instrument is used. They must be

observed during use.

✱The circuit under test must be switched off, de -

energised and isolated before Insulation or Continuity

tests are made.

✱The test button must not be held down while connecting

the test leads or while changing ranges. (May cause

‘Live Circuit Warning‘to become inoperable).

✱The Voltage warning does not function if OFF or

is selected.

✱During an insulation test, connections must not be

touched.

✱After insulation tests, capacitive circuits must be allowed

to discharge before disconnecting the test leads.

✱Test leads, prods and crocodile clips must be in good

order; clean, and with no broken or cracked insulation.

✱Replacement fuses must be of the correct size, type and

rating.

NOTE

THE INSTRUMENTS MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT

PERSONS.

Symbols used on the instrument:

Caution: risk of electric shock

Caution: refer to accompanying notes

Equipment protected throughout by Double Insulation (Class II)

Equipment complies with relevant EU Directives

The 61-791 has the following features:

✷1mA Insulation test current

✷200mA Continuity test with lead zeroing facility

✷Combined curved Analogue / Digital display

✷Continuity Beeper

✷Auto shut off

✷Display Back light

✷Low Battery indication

✷250 Volt Insulation

✷500 Volt

✷1000 Volt Insulation

✷Default Voltmeter

OPERATION

Preliminary Test lead check

1. Before each use of the instrument, visually inspect the test leads, prods

and crocodile clips to confirm that their condition is good, with no damaged

or broken insulation.

2. Check continuity of the test leads by firmly shorting the leads together

and read the test lead resistance. measurement directly from the display.

Backlight operation

1. Turn the instrument backlight ‘On’by selecting the position.

2. When the backlight is activated, select the desired test position.

3. On completion, select the ‘OFF’position to de-activate the backlight and

conserve battery life.

Continuity Testing

1. Turn the instrument ‘On’by selecting the Ωrange.

2. If required, zero test lead resistance by firmly shorting both leads together,

wait for the reading to stabilise and press the test button. Display of the

symbol confirms lead zeroing. Note: Lead zeroing cancels each time

the instrument is switched off, or Auto shut off operates.

3. Connect the test probes to the isolated circuit under test.

4. The display shows the resistance value. (Maximum 99,9Ω)

5. On completion switch to ‘OFF’position. Alternatively auto shut off operates

after 5 minutes of instrument inactivity.

Continuity Beeper On the position, a continuous beep note

sounds when the test leads make contact with resistance less than 5Ω. Ιf

contact is maintained, beeping ceases after a few seconds and the resistance

value is displayed. Resistance greater than 5Ωis indicated by an intermittent

beep note.

Leads

Nulled Low Battery

Fuse

Ruptured

Refer to Safety Warnings before using the instrument

DISPLAY FEATURES High

Voltage

1000V

100

200

100 M 300

10 M 400

1 M

100k

500

1 G

Default

Voltage

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

Insulation Testing

1. Turn the instrument ‘On‘ by selecting the MΩrange.

2. Connect the test probes to the isolated circuit under test.

3. Press and hold the push button; the display shows the insulation value.The

reading will remain displayed for a few seconds after the push button is

released. As an additional safety feature, instruments with 1000V range will

flash symbol before performing a test.

4. Release the push button before removing the test leads (to enable the

instrument to discharge the circuit under test).

5. On completion switch to the ‘OFF’position. Alternatively auto shut off

operates after 12 minutes of inactivity.

SPECIFICATION

Insulation

Test Voltage Accuracy: -0% + 30% (over full operating temperature)

into 0 to 1mA load

Measuring Range: 0,01MΩ- 999MΩ(Digital)

0,1MΩ- ∞(Analogue)

Short Cct. Current: Less than 2mA

Accuracy (at 20°C): ± 3% ±2 digits up to 10MΩ

± 5% ±2 digits up to 100MΩ

± 30% up to 999MΩ

Output Noise Voltage: Typically 2V pk to pk at 20kHz (at 1mA load)

Hum Rejection: <10% error with 100µA RMS (0,2MΩto ∞)

Continuity

Measuring Range: 0,01Ω- 99,9Ω

Open Cct. Voltage: 5V ±1V

Accuracy (at 20°C): 0,01Ω- 9,99Ω±3% ± 2 digits (ISC >200mA)

10Ω − 100Ω ± 5% ± 2 digits (ISC >20mA)

Lead res. comp: 0 to 9,99Ω

Hum Rejection: <3% error with 1V RMS (0,2Ω to 50Ω)

Continuity Beeper: On position, the beeper sounds at <5Ω resistance

Environmental Conditions

Temperature Coefficient: <0,1% per °C

Temperature Range:

Operating: -20°C to +40°C (full measurement range)

-20°C to +60°C (to 100 MΩmaximum)

Storage: -25°C to +65°C

Humidity: 90% RH at 40°C max

General Specifications

Display: 3 digit L.C.D. Maximum reading 999

Auto Shut off: Operates after 5 minutes of inactivity by the

instrument in Continuity position and 12 minutes in Insulation position. Beep

notes pre-empt auto shut off. The instrument can be switched back on by

pressing the test button, or by selecting ‘OFF‘and then the required position.

Default Live Circuit Warning

When more than 25 V is applied to the terminals, the instruments default to a

1000V

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

0,01MΩ0,1MΩ1,0MΩ10MΩ100MΩ

Load

Terminal Voltage

1000 V Range

500 V Range

0.5MΩ

250 V Range

0,2MΩ0,5MΩ1MΩ2MΩ5MΩ

0,2MΩ

0,5MΩ

1MΩ

2MΩ

5MΩ

10MΩ

Minimum Indicated Value

Terminal Characteristics Limiting Value

voltmeter on all switch positions except ‘OFF’and . In addition, the beeper

will sound on all switch positions except ‘OFF‘and . All selected tests will be

inhibited except for Insulation tests, which will remain available until the voltage

exceeds 55 V.

Default Voltmeter Ranges: 25V - 450V a.c. 50/60 Hz ± 2% ±3 digits

450V - 600V a.c. 50/60 Hz ± 3%

d.c. - unspecified

Automatic Discharge: Capacitive circuits are automatically discharged

when the test button is released following an insulation test.

Power Supply: 6 x 1,5V cells IEC LR6 type only.

Battery life: Typically 3000 x 5 second operations (worst

case, with not selected).

Battery cells should not be left in an instrument which may remain unused for

extended periods of time.

Low Battery Indicator: The low battery indicator symbol will appear

when the battery cells are exhausted.

Battery Replacement: The rear cover must not be opened if the test

leads are connected. To remove the rear cover, release the screw at the

bottom of the cover and lift the cover upwards.To avoid the possibility of

shock, do not press the test button or touch the fuse when changing

batteries.

Fuse: 500 mA (F) H.B.C.10 kA min (32mm x 6mm)

To check this fuse, select MΩ, open circuit the test leads and press the test

button until a reading is obtained. Display of the fuse symbol or an error

code indicates a ruptured fuse. Located behind the rear cover, this fuse can

be replaced by the user. The rear cover must not be opened if test leads are

connected. The replacement fuse must be of the correct type and rating. To

avoid the possibility of shock, disconnect the battery before touching the fuse.

Safety: The instruments meet the requirements for double insulation to IEC

1010-1 (1995) EN 61010-1 (1995) to Category III*, 300 Volts phase to earth,

440 Volts phase to phase, without the need for separately fused test leads.

*Relates to transient overvoltage likely to be found in fixed installation wiring.

E.M.C. Meets EN 50081-1 and EN 50082-1 (1992).

Weight: 530g (including batteries)

Dimensions: 195mm x 98mm x 40mm.

Cleaning: Wipe disconnected instrument with a clean cloth

dampened with soapy water or Isopropyl Alcohol

(IPA).

ACCESSORIES

Supplied Part Number

Synthetic zip-up pouch C90

Test leads, prods & crocodile clips TL - 791

Lifetime Limited Warranty

This meter is warranted to the original purchaser against defects in material or

workmanship for the lifetime of the meter. During this warranty period, IDEAL

INDUSTRIES, INC. will, at its option, replace or repair the defective unit,

subject to verification of the defect or malfunction.

This warranty does not apply to defects resulting from abuse, neglect,

accident, unauthorized repair, alteration, or unreasonable use of the

instrument.

Any implied warranties arising out of the sale of an IDEAL product, including

but not limited to implied warranties of merchantability and fitness for a

particular purpose, are limited to the above. The manufacturer shall not be

liable for loss of use of the instrument or other incidental or consequential

damages, expenses, or economic loss, or for any claim or claims for such

damage, expenses or economic loss.

State laws vary, so the above limitations or exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other

rights which vary from state to state.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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