Megger DCM310, DCM320 Operating Manual

DCM310 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 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.

Symbols as marked on the
Tester and Instruction card

Risk of electric shock



See instruction card



Equipment protected by double or



reinforced insulation
Battery



Earth



Conforms to EU directives



Application around and removal

F

from hazardous live conductors is
permitted

Do not discard this product or
throw away

Power On / Off ACA 20A

Data Hold MAX Hold

 CAT.Ⅲ.600V
with respect to

earth for the jaw.
Tactile barrier for

Hand Guard.
 Do not hold the

1.3V ~ 750.0V

meter in front of
the Tactile Barrier.

X

Maintenance

Do not attempt to repair thi s C lam p M eter.
It contains no user-servicea ble p arts.
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.

ACA 200A

 CAT.Ⅲ.600V
with respect to

earth for the jaw.
Tactile barrier for

Hand Guard.
 Do not hold the

meter in front of
the Tactile Barrier.

X X

Battery Replacement

ACA 400A

 CAT.Ⅲ.600V
with respect to

earth for the jaw.
Tactile barrier for

Hand Guard.
 Do not hold the

meter in front of
the Tactile Barrier.

Specifications

1-1 General Specifications

LCD display digits :

2000 digit large scale LCD readout.

Measuring rate : 2.5 times / sec.
Overrange display :

“OL” is displayed for “20A” and
“200A” range, shows the real value
when bigger than “400A” range.

Low battery indicator :

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

display.

Power requirement :

9V PP3/6LR61 battery.

Battery type and life :

ALKALINE 580 hours.
Rechargeable batteries are not
suitable for use with this instrument.

1-2 Environmenta l 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).

Operating altitude : 2000m (6562 ft)
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.

Conductor Size : 27mm diameter.
Pollution degree : 2
EMC : EN 61326-1
Shock vibration :

Sinusoidal vibration per MIL-T­28800E (5 ~ 55 Hz, 3g maximum).

Dimensions (W x H x D) :

56mm x 180mm x 32mm

Weight : 250g including battery.
Accessories : Battery (installed),

Carrying case and User manual.

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.

AC Cur rent

Function Range Accuracy

A

(50~60Hz)

0 ~19.99A

20.00~199.9A
200~400A

±(3.0% + 0.05 A)
±(2.0% + 0.5 A)
±(2.0% + 5 A)

Limited Warranty

This Meter is warranted to the orig ina l
purchaser against defects in material
and workmanship for 1 year from the
date of purchase. During th is wa rranty
period, manufacturer will, a t its optio n,
replace or repair the defective unit,
subject to verification of the d efe ct or
malfunction. This warranty does not
cover disposa ble ba t teries , or da mage
from abuse, neglect, accident,
unauthorized repair, altera tion,
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 war ranties 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 law s
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