Megger DCM340 Handheld Clamp Multimeter User Guide
- June 3, 2024
- Megger
Table of Contents
Megger DCM340 Handheld Clamp Multimeter
Safety Information
To ensure safe operation and service of the Meter, follow these instructions.
Failure to observe warnings can result in severe injury or death.
- Avoid working alone so assistance can be rendered.
- To enhance safety, test leads should be disconnected from instrument when not in use.
- Do not use test leads or the Clamp Meter if they look damaged.
- Do not use the Meter if the Clamp Meter is not operating properly or if it is wet.
- Use the Clamp Meter only as specified in the Instruction card or the protection provided by the Clamp Meter might be impaired.
- Special precautions are necessary when operating in situations where exposed live parts at dangerous voltages may be encountered. Personal protective equipment (not supplied with this instrument) should be used.
- The test leads sould be disconnected from the instrument when making a current measurement.
- Use caution with voltages above 30 V ac rms, or 60 V dc. These voltages pose a shock hazard.
- To avoid false readings that could lead to electric shock and injury, replace the battery as soon as the low battery indicator ( ) appears.
CAUTION :
CAUTION: If the meter is used in the vicinity of equipment that generates
electromagnetic interference, the display may become unstable or the
measurements show may be subject to large errors.
Maintenance
Do not attempt to repair this Clamp Meter. It contains no user-serviceable
parts. Repair or serving should only be performed by qualified personal.
Cleaning
Periodically wipe the case with a dry cloth and detergent do not use abrasives
or solvents.
Safety, Hazard and Warning symbols on the instrument
This paragraph details the various safety and hazard icons on the instrument’s
outer case
| Icon | Description |
|---|---|
| F |
Warning: High Voltage, risk of electric shock
G|
Caution: Refer to user guide.
|
UK conformity. This equipment complies with current UK legislation
c|
EU conformity. Equipment complies with current EU directives.
|
Equipment complies with current ‘C tick’ requirements.
|
Do not dispose of in the normal waste stream.
t|
Equipment protected throughout by double insulation.
a| AC measurement
d|
DC measurement
g|
Reference earth connection. Not a protective earth terminal
| Battery
- CAT IV – Measurement category IV: Equipment connected between the origin of the low-voltage mains supply and distribution panel.
- CAT III -Measurement category III: Equipment connected between the distribution panel and electrical outlets.
- CAT II – Measurement category II: Equipment connected between the electrical outlets and the user’s equipment.
- CAT I – Measurement category I: The circuits are not connected to mains.
Measurement equipment may be safely connected to circuits at the marked rating or lower. The connection rating is that of the lowest-rated component in the measurement circuit.
Operation
Power On / Off
Auto Power Off
Auto Power Off disable Press buttons (except the Hold button) than switch the rotary knob to power on the Meter.
AC V / DC V
Resistance
Continuity
ACA / DCA
- CAT.III.600 V with respect to earth for the jaw.
- Do not hold the meter in front of the Tactile Barrier.
Hz
Zero
- 2: REL: Meter save the displayed offset value after one press of the ZERO button. The LCD is displaying the relative value.
- 3: REL (flashing): A second press of the ZERO button saves the offset value, with the present value then displayed.
- 1: Normal: Press and hold ZERO for ≥2 sec to return to normal operation and cancel the offset value.
Data Hold
Min / Max Hold
- 2: MAX: Meter is saving the maximum and minimum value. The maximum value is displayed
- 3: MIN: Meter is saving the maxi mum and minimum value. The minimum value is displayed
- 4: MAX MIN (flashing): Meter is saving the maximum and minimum values. Present value is displayed.
- 1: Normal: Press and hold MIN MAX to return to normal operation.
Battery Replacement
Low battery: “ ” is displayed or flashes when a button is pressed. To avoid false readings that could lead to electric shock and injury, replace the battery as soon as the low battery indicator ( ) appears.
Peak Hold
- 2: PMAX: Meter is saving the peak maximum and minimum value. The peak maximum value is displayed.
- 3: PMIN: Meter is saving the peak maximum and minimum values. The Peak minimum value is displayed
- 4: CAL: Press and hold the PEAK button ≥3 sec to calibrate the Meter itself for accurate measurement.
- 1: Normal: Press and hold the PEAK button to return to normal operation.
Back Light
Backlight Automatic off after 60 seconds.
Specifications
| Specification | Detail |
|---|
1-1 General Specifications
LCD display digits :| 3 3/4 digit large scale LCD readout.
Display count :| 4000 counts.
Measuring rate :| 1.5 times / sec.
Overrange display :| “OL” is displayed for “Ω” functions, shows the real value
for “A” and “V” function.
Automatic power off time :| Approximately 30 minutes after
Low battery indicator :| ****
is displayed. Replace the battery when the indicator appears in the display.
To avoid false readings that could lead to electric shock and injury, replace the battery as soon as the low battery indicator appears.
Power requirement :| 9 V PP3 / 6LR61 battery.
Rechargeable batteries are not suitable for use with this instrument.
|
1-2 Environmental Conditions
Indoor Use.|
Calibration :| One year calibration cycle.
Operating temperature :| 0 °C ~ 30 °C (±80% RH)
30 °C ~ 40 °C (±75% RH)
40 °C ~ 50 °C (±45% RH)
Storage temperature :| -20 to +60 °C, 0 to 80% RH (batteries not fitted).
Overvoltage category :| IEC 61010-1 600 V CAT.III. CAT.III equipment is
designed to protect against the transients in the equipment in fixed
installations, such as distribution panels, feeders and short branch circuits
and lighting systems in large buildings.
Operating altitude :| 2000 m (6562 ft)
Conductor Size :| 35 mm diameter.
Pollution degree :| 2
EMC :| EN 61326-1
Shock vibration :| Sinusoidal vibration per MIL-T- 28800E
(5 ~ 55 Hz, 3 g maximum).
Drop Protection :| 1.2 m drop to hardwood on concrete floor.
| Addition error according to remanence : | 1% max. of current crest. |
|---|---|
| Auto Power Off (APO) | The meter will automatically shut itself off after |
approximately 30 minutes after power on.
Frequency : Hz|
Overload protection :| 600 A rms.
Sensitivity :| 3 A rms for ACA (Aa) (>400 Hz Unspecified)
Peak Hold :| ±(3% + 15dgt) >600 Vpeak Unspecified. >600 A peak Unspecified.
Min/Max Hold :| add ± 15 dgt to accuracy for ACA / DCA.
- Automatically switch to the low resolution range at Peak Hold and MIN MAX Hold.
Limited Warranty
This Meter is warranted to the original purchaser against defects in material and workmanship for 1 year from the date of purchase. During this warranty period, manufacturer will, at its option, replace or repair the defective unit, subject to verification of the defect or malfunction. This warranty does not cover , disposable batteries, or damage from abuse, neglect, accident, unauthorized repair, alteration, contamination, or abnormal conditions of operation or handling. Any implied warranties arising out of the sale of this 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, expense or economic loss. Some states or countries laws vary, so the above limitations or exclusions may not apply to you.
Decommissioning
WEEE Directive
The crossed-out wheeled bin symbol placed on Megger products is a reminder not
to dispose of the product at the end of its life with general waste. Megger is
registered in the UK as a Producer of Electrical and Electronic Equipment. The
Registration No is WEE/ HE0146QT. For further information about the disposal
of the product consult your local Megger company or distributor or visit your
local Megger website.
Battery disposal
The crossed out wheeled bin symbol placed on a battery is a reminder not to
dispose of batteries with general waste when they reach the end of their
usable life. For disposal of batteries in other parts of the EU contact your
local Megger branch or distributor. Megger is registered in the UK as a
producer of batteries (registration No.: BPRN00142). For further information
see www.megger.com
Manufacturing sites
Megger Limited
Arncliffe Road
Dover
Kent
CT17 9EN
ENGLAND
T. +44 (0)1 304 502101
F. +44 (0)1 304 207342
Megger GmbH
Weststraße 59
52074 Aachen
T. +49 (0) 241 91380 500
E. [email protected]
Megger USA – Valley Forge
Valley Forge Corporate Center
2621 Van Buren Avenue
Norristown
Pennsylvania, 19403
USA
T. +1 610 676 8500
F. +1 610 676 8610
Megger USA – Dallas
4545 West Davis Street
Dallas TX 75237
USA
T. 800 723 2861 (USA only)
T. +1 214 333 3201
F. +1 214 331 7399
E. [email protected]
The company reserves the right to change the specification or design without
prior notice. Megger is a registered trademark
DCM340_UG_en_V02 08 2021
© Megger Limited 2020