Megger PVK330, DCM340 Operating Manual

DCM340 Clampmeter
User Guide

Warning

Safety sheet

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 Read First

 Safety Information

To ensure safe operation and service
of the Meter, follow these instructi ons.
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 speci fied
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.

Symbols as marked on the
Meter and Instruction card

Risk of electric shock



See instruction card



DC measurement



Equipment protected by double or



reinforced insulation
Battery



Earth



AC measurement



Conforms to EU directives



If the meter is used in the vicinity of
equipment which generates electromag­netic interference, the display may
become unstable or the measurements
show may be subject to large errors.

 Caution

Off / On

Auto Power Off

30min

Auto Power Off disable :

Press buttons (except Hold button) than
switch the rotary knob to power on the
Meter.

AC V / DC V

Resistance

Continuity

ACA / DCA

 CAT.Ⅲ.600V
with respect to

A

0

9

5

earth for the jaw.
Tactile barrier for

Hand Guard.
 Do not hold the

meter in front of
the Tactile Barrier.

I

√

I

I

I

X

Hz

X

I + (-I) = 0

Zero

o REL: Meter save the displayed
offset value after one press of the
ZERO button . T h e LCD is display­ ing the relative value.
p REL (flashing): A se cond press of
the ZERO button saves the offset
value, with the present va lue then
displayed.
n Normal : Press and hold ZERO for

≧2 sec to return to normal opera­ tion and cancel the offset value.

Data Hold

Min / Max Hold

o MAX: Meter is saving the maxi­ mum and minimum value. Maxi­ mum value is displayed.
p MIN: Meter is saving the maxi
mum and minimum value. Mini­ mum value is displayed.
q MAX MIN (flashing): Meter is
saving the maximum and mini­ mum values. Present value is
displayed.
n Normal : Press and ho ld MIN
MAX to return to normal operation.

Battery Replacement

Peak Hold

o P

: Meter is saving the peak

MAX

maximum and minimum value.
Peak maximu m value is displayed.
p P

: Meter is saving the peak

MIN

maximum and minimum value.
Peak minimum value is displayed.
q CA L : Press and hold PEAK but-

ton≧3 sec to calibrate the
Meter itself for accurate meas-

urement.
n Normal : Press and hold PEAK
button to return to norm al opera­ tion.

z

H

0

5

A

C

A

A

0

Low battery :

“” is displayed or displays
“” a flash when press

button.

Back Light

Back light Automatic off after 60
seconds.

Specifications

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
power on.

Low battery indicator :

 is displayed. Replace the battery
when the indicator  appears in the

display.

Power requirement :

9V 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 (b atteri es
not fitted).

Overvoltage category :

IEC 61010-1 600V 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 : 2000m (6562 ft)
Conductor Size : 35mm diameter.
Pollution degree : 2
EMC : EN 61326-1

Shock vibration :

Sinusoidal vibration per MIL-T­28800E (5 ~ 55 Hz, 3g maximum).
Drop Protection : 1.2m drop to
hardwood on concrete floor.

1-3 Electrical Specifications

Accuracy is ±(% reading + number
of digits) at 23°C ± 5°C < 80%RH.

Temperature coefficient :

0.2 x (Specified accuracy) / °C,
< 18°C, > 28°C .

Voltage

Function Range Accuracy

Overload protection : 600V rms
Input impedance : 1MΩ // less

than 100pF.

AC Conversion Type :

AC Conversion are average sensing
rms indication calibrated to the rms
value of a sine wave input.

Resistance & Continuity

Overload protection : 600V rms
Max. open circuit voltage : 3V
Continuity check : Internal sounds

activates if the resistance of the
circuit under test is less than 30Ω
approximately.

0~400.0Vrms

V

400~600Vrms

V

Function Range Accuracy

Ω  400.0Ω ±(1% + 3 dgt)

0~400.0 V

400~600 V

±(1.0%+ 5 dgt)
50Hz ~ 500Hz

±(0.7% + 2 dgt)

AC Cur rent

Function Range Accuracy

A

(50~60Hz)

A

(61~400Hz)

0~400.0A

400~600A

0~400.0A

400~600A

±(1.5%+ 5 dgt) *1
±(2.0%+ 7 dgt)
±(2.0%+ 5 dgt) *1

±(2.5%+ 7 dgt)

*1 : Over 80% of full scale add ±1.6 %
Overload protection : 600A rms

AC Conversion Type and additional
accuracy is same as AC Voltage.

Position Error : ±1% of reading.

DC Current

Function Range Accuracy

A

0~400.0A

400~600A

±(1.2%+ 5 dgt)
±(1.9%+ 7 dgt)

Overload protection : 600A rms
Position Error : ±1% of reading.
Addition erro r a cco rd ing to rema -

nence : 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

Range Resolution Accuracy

20~400Hz 1Hz

±(0.1% + 2 dgt)

Overload protection : 600A rms.
Sensitivity : 3A rms for ACA (A)

(>400Hz Unspecified)
Peak Hold : ± (3% + 15dgt)
*>600Vpeak Unspecified.

*>600Apeak 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.

Maintenance

Do not attempt to repair this Meter.
It contains no user-se r viceable
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.

Limited Warranty

This Meter is warranted to the orig inal
purchaser against defects in ma terial
and workmanship for 1 year from the
date of purchase. During this warran ty
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 fuses,
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.

Megger Limited

Archcliffe Road, Dover, CT17 9EN
United Kingdom
Tel [phone]

Valley Forge Corporate Centre
2621 Van Buren Avenue, Norristown
PA 19403, USA
Tel [phone]

Email [e-mail]
Web www.megger.com