DLRO200-EN datasheet, PDF - EEWORLD Datasheet

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DLRO200-EN: Descriptiondigital multimeters 200 amp dlro; CategoryTopical application Test and measurement; File Size331KB，3 Pages; ManufacturerMegger; Websitehttp://www.megger.com; Environmental Compliance

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DLRO200-EN Overview

digital multimeters 200 amp dlro

DLRO200-EN Parametric

Parameter Name	Attribute value
Manufacture	Megge
Product Category	Digital Multimeters
RoHS	Yes
Produc	Milliohm Meters
Cable Type	North American Power Cord Included
Unit Weigh	14.5 kg

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DLRO 200

Digital Microhmmeter

DLRO 200

Digital Microhmmeter

Small and weighs less than 15kg (33 lbs)

Test currents from 10A to 200 A d.c.

0.1 µΩ best resolution

On board memory for up to 300 test

results and notes

RS232 port to download stored results or

for real time output to a printer

Supplied complete with 5m (16.4 ft.) test

leads and download software

Smooth, continuous applied curent

eleminates magnetic transients capable of

inductively tripping breaker controls

(115 V version)

DESCRIPTION

Megger DLRO200 measures resistances between 0.1 µΩ and 1

Ω,

at high currents.

This versatile instrument can provide test currents from 10 amps

up to 200 amps subject to the load resistance and supply voltage.

A large liquid crystal display provides all the information needed

to perform a test; all test parameters and measurement results are

displayed.

The unique design allows the weight and size of DLRO200 to be

kept to a minimum; the instrument weighs less than 15kg. This

small size makes DLRO200 equally at home in the workshop, on

the production floor or in the field. The high current capability

and compact design make DLRO200 suitable for testing circuit

breaker contacts, switch contacts, busbar joints or other

applications where high current is needed.

300 sets of results may be stored in DLRO200’s on board memory

for later download to a PC or may be output directly to a printer

via the RS232 port. You may also add notes to any stored result

by using the on board alphanumeric keypad, thereby making later

identification of results straightforward.

As well as adding notes to stored results, the alphanumeric

keypad allows you to set the test current directly by typing in the

value required. DLRO200 will check the continuity of the test

circuit, and will quickly ramp the test current up to the desired

level. The keyboard is also used to set upper and lower limits for

the result and to prevent the use of excessive currents by setting

an upper limit to the allowable test current.

DLRO200 uses a four terminal measurement technique to cancel

the resistance of the test leads from the measurement.

DLRO200 operates in one of three modes, which are simply

selected from the on screen menu.

CONTINUOUS mode is provided for users who wish to monitor a

resistance over a period of time. Connect the test leads, select the

test current and press the TEST button. DLRO200 will pass a

current continuously, and measure the resulting voltage at 2-

second intervals, until the test button is pressed to stop the test or

the test circuit is interrupted.

In NORMAL mode you connect the leads, select the test current

and press the TEST button. The test current will ramp up to the

desired level, hold for 2 seconds and then ramp down. The

whole process takes approximately 10 seconds.

In AUTO mode select the desired current, connect the current

leads and press the TEST button. The TEST lamp will flash to show

that the DLRO200 is ready to carry out a test. As soon as the

potential leads are connected, a test will start. To repeat a test,

simply break contact with the voltage probes and remake contac.

Measuring individual joints in a busbar is a good example of the

convenience to be gained by using AUTO mode. The two

current leads are connected to the ends of the busbar. They will

remain connected here until all tests have been completed. When

the voltage leads make contact across a joint, DLRO200 detects

that all four leads are connected, carries out a test and stops.

When you move to the next joint DLRO detects the new

completed circuit automatically and carries out the next test, and

so on until all joints have been tested. The results may be stored

automatically and may be recalled to the display or downloaded

for review.

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