Megger DCM330 Manuale utente

DCM330

Clampmeter

User Guide

www.megger.com

DCM330

Safety Information

1. 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.

To avoid false readings that could lead to electric shock and injury, replace the battery as

soon as the low battery indicator ( ) appears.

1.1 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.

1.2 Cleaning

Periodically wipe the case with a dry cloth and detergent do not use abrasives or solvents.

www.megger.com DCM330 3

Safety Information

1.3 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

FWarning: High Voltage, risk of electric shock

GCaution: Refer to user guide.

UK conformity. This equipment complies with current UK legislation

cEU conformity. Equipment complies with current EU directives.

Equipment complies with current ‘C tick’ requirements.

Do not dispose of in the normal waste stream.

tEquipment protected throughout by double insulation.

gReference earth connection. Not a protective earth terminal

Battery

Application around and removal from hazardous live conductors is permitted

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

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.

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DCM330

Operation

2. Operation

2.1 Power On / Off

2.2 Auto Power Off

The meter will automatically shut itself off

after approximately 10 minutes after power

on.

2.3 AC V / DC V

2.4 Data Hold

2.5 Volt Finder

1. Volt Finder can be activated on any range

including OFF.

2. Test leads are not used for the Volt Finder

function.

3. Press and hold the Volt Finder button.

The display will go black, a tone sounds

and the red LED near the fork jaw

will illuminate brieﬂy to verify that the

instrument is operational. Continue to

hold the Volt Finder button.

4. If a voltage of 50 V to 1000 V (50 to

500 Hz) is detected near the jaw ,a

continuous tone sounds and the red LED

near the jaw illuminates.

www.megger.com DCM330 5

Operation

2.6 Diode / Continuity

2.7 Resistance

2.8 ACA

FCAT.IV.600 V with respect to earth for the

jaw. Tactile Barrier for hand guard.

FDo not hold the meter in front of the

Tactile Barrier.

2.9 Battery Replacement

To avoid false readings that could lead to electric

shock and injury, replace the battery as soon as the

low battery indicator () appears.

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DCM330

Speciﬁcations

3. Speciﬁcations

Speciﬁcation Detail

1-1 General Speciﬁcations

LCD display digits : 3 1/2 digit large scale LCD readout.

Display count : 2000 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 10 minutes after power on.

Low battery indicator : is displayed. Replace battery immediately

Power requirement : R03 UM4 AAA 1.5 V x 2 batteries

Battery life : ALKALINE 250 hours.

Not suitable for use with rechargeable cells.

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).

Dimensions (W x H x D) : 54 mm x 193 mm x 31 mm

Weight : 280 g including battery.

Accessories : Battery (installed), Carrying case and User manual.

Overvoltage category : IEC 61010-1 1000 V CAT.III. 600 V CAT.IV.

Operating altitude : 2000 m (6562 ft)

Conductor Size : 16 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.

www.megger.com DCM330 7

Speciﬁcations

1-3 Electrical Speciﬁcations

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

Temperature coefﬁcient : Add 0.2 x (Speciﬁed accuracy) / °C, < 18 °C, > 28 °C .

DC / AC Volts Range DC Accuracy AC Accuracy

200.0 V ±(1.0% + 2dgt) ±(1.5% + 5dgt)

50 Hz ~ 500 Hz

1000 V

Over voltage protection : DC / AC1000 V

Input Impedance : 2 MΩ // less than 100 pF.

CMRR / NMRR : (Common Mode Rejection Ratio) (Normal Mode

Rejection Ratio)

VAC : CMRR > 60 dB at DC, 50 Hz / 60 Hz

VDC : CMRR > 100 dB at DC, 50 Hz / 60 Hz NMRR > 50 dB

at DC, 50 Hz / 60 Hz

AC Conversion Type : Average sensing rms indication.

AC Current Function Range Accuracy

(50~60 Hz)

0.0 ~ 200.0 A ±(3.0% + 3 dgt)

Overload protection : 400 Arms

AC Conversion Type : Average sensing rms indication.

* Adjacent conductor inﬂuence : <0.08 A/A

Resistance Range Accuracy

200.0 Ω ±(1.0% + 5 dgt) *2

2.000 KΩ

±(1.0% + 2 dgt)

20.00 KΩ

200.0 KΩ

2.000 MΩ

20.00 MΩ ±(1.9% + 5 dgt) *1

Overload protection : 600 Vrms

Open circuit Voltage : -1.3 V approx.

* 1 < 100 dgt rolling.

* 2 < 10 dgt rolling.

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DCM330

Speciﬁcations

Diode Check and Continuity Resolution Accuracy

1 mV ±(1.5%+0.05 V)*

* For 0.4 V ~ 0.8 V

Max.Test Current : 1.5 mA

Max. Open Circuit Voltage : 3 V

Overload Protection : 600 Vrms

Continuity : Internal beeper activates if the resistance of the circuit

under test is less than

50 Ω. It will then turn off if the resistance is increased

beyond 250 Ω. Response time is approximately

0.25~1 sec.

www.megger.com DCM330 9

Limited Warranty

4. 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.

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DCM330

Decommissioning

5. Decommissioning

5.1 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 disposal of the product consult your local Megger company or distributor or

visit your local Megger website.

5.2 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

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