Megger DCM310, DCM320 Specifications

DCM310 and DCM320

Digital clamp meter

DCM310 and DCM320

Digital clamp meter

■ Current only and multimeter models

■ Measures up to 400 A a.c. with low

current ranges for improved resolution

■ 600 V ac/dc (DCM320)

■ Max Hold (DCM310)

■ 20 MΩ Resistance (DCM320)

■ IEC61010 CAT III 600 V

DESCRIPTION

The DCM310 and DCM320 are ideal clamp meters for use
during the installation, maintenance and checking of
electrical systems and equipment.

Both meters will measure AC current (50 - 60 Hz) up to
400 A, with a Data-hold feature to freeze the displayed value
for use in confined situations where the display may be
difficult to read. The DCM310 also has a max-hold feature to
automatically store and display the maximum value
measured over a period of time.

The DCM320 has the benefit of measurement ranges for a.c.
and d.c. voltages up to 600 V, and resistance up to 20 MΩ,
via the terminals and supplied test leads. It also has a
continuity buzzer that operates up to 20 Ω.

Both meters are safety rated to IEC 61010 CAT III 600 V,
so offering high levels of protection to the operator.
Carrying cases are included, and even without the case, the
instruments are rated to withstand a 1.2 m drop onto a hard
surface without damage.

The compact clamp jaw enables cables to be measured as
large as 27 mm diameter, so covering the majority of
applications within the electrical system installation industry.

Ideal for use by anyone working on basic electrical systems
or equipment, these instruments are also suitable for the
majority of applications encountered by the electrical
contractor.

ADDITIONAL FEATURES

■ Data Hold

■ Small pocket-size design

■ Exceptional battery lifetime

■ Supplied with carry case

DCM310 and DCM320

Digital clamp meters

SPECIFICATION

All accuracies specified at 23ºC ±5º 85% RH

DCM310 DCM320

AC current
(50 - 60 Hz) Range Accuracy Range Accuracy

0-19.99 A ±3% ±0.05 A 0-40.00 A ±1.9% ±10 digits

20.0-199.9 A ±2% ±0.5 A 40.00-200.0 A ±1.9% ±5 digits
200-400 A ±2% ±0.5 A 201-400 A ±1.9% ±5 digits

Position
error: ±1.5% of reading

DC and AC Ranges
volts 0 - 200.0 V 200.0 - 600.0 V

Accuracy DC AC

±1.0% ±2 dgts ±1.5% ±5 dgts

(50-500 Hz)

Continuity buzzer On: <20 Ω

Off: >50 Ω

Response time: <50 ms

Resistance Range Accuracy

200.0 Ω ±1% ±5% digits

2.000 KΩ ±0.7% ±2 digits

20.00 KΩ ±0.7% ±2 digits

200.0 KΩ ±0.7% ±2 digits

2.000 MΩ ±1.0% ±2 digits

20.00 MΩ ±1.9% ±5 digits

Sample rate: 2.5 times per second 1.5 times per second

Overrange display “OL”

Power
requirements 1 x PP3 9 V 2 x AAA 1.5 A

alkaline battery alkaline battery

Battery life: 580 hours 200 hours
Auto off: 10 mins.

after power off

Operating
temperature 0 - 30ºC 80% RH

30 - 40ºC 75% RH
40 - 50ºC 45% RH

Applies to both clampmeters

Safety rating

IEC/EN61010-1 CAT III 600 V

Temperature
coefficient

0.2 x (specified accuracy) / ºC (<18ºC >28ºC)

Maximum conductor size

27 mm diameter

LCD

2000 digit large scale readout

Storage temperature

-20ºC - +60ºC (80% RH) (batteries removed)

Operating altitude

2000 m

EMC

IEC/EN 61326-1

DDiimmeennss ii oo nn ss
DCM310 - 56 mm (W) x 180 mm (H) x 32 mm (D)
DCM320 - 56 mm (W) x 188 mm (H) x 28 mm (D)

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DCM310 - 250 g including battery
DCM320 - 225 g including batteries

Warranty

1 year

ORDERING INFORMATION

Item (Qty) Order Code

DCM310-EN Digital clamp meter, 400 A a.c. 1000-303
DCM320-EN Digital clamp meter, 600 V a.c.
and d.c.; 20 MΩ 1000-304

Included accessories

Battery
Pouch
User guide
Test leads (DCM320 only)

UK

Archcliffe Road Dover
CT17 9EN England
T [phone]
F [phone]
E [e-mail]

UNITED STATES

4271 Bronze Way
Dallas TX 75237-1088 USA
T 800 723 2861 (USA only)
T [phone]
F [phone]

Item (Qty) Order Code

Replacement test leads

Red/black test leads with croc clips 6220-779
Red/black fused test leads (500 mA)
with croc clips 6220-789

OTHER TECHNICAL SALES OFFICES

Norristown USA, Sydney AUSTRALIA,
Toronto CANADA, Trappes FRANCE,
Kingdom of BAHRAIN, Mumbai
INDIA, Johannesburg SOUTH AFRICA
and Conjure THAILAND.

Registered to ISO 9001:2000 Cert no. Q 09290

Registered to ISO 14001-1996 Cert no. EMS 61597

DCM310_DCM320_DS_en_V03

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Megger is a registered trademark