DLRO200-115E Megger, DLRO200-115E Datasheet
DLRO200-115E
Manufacturer Part Number
DLRO200-115E
Description
Digital Multimeters 200 Amp DLRO
Manufacturer
Megger
Datasheet
1.DLRO200-115E.pdf
(2 pages)
Specifications of DLRO200-115E
Accuracy
+/- 2 %
Resistance Range
999.9 Ohms
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
DLRO 200-115
Digital Low Resistance Ohmmeter
PRODUCT DESCRIPTION
The DLRO200-115 is designed to check and measure
contact resistance in high voltage circuit breakers,
disconnecting switches (isolators), busbar joints, or for any
low resistance measurement. The test set accurately
measure resistances ranging from 0.1µΩ to 1Ω, 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. For those applications that demand a
smooth dc current, the DLRO200-115 has extra filtering on
the output to reduce mains frequency ripple and can drive
200 amps through a total current loop resistance of
11 milliohms. The filtered output of the DLRO200-115 also
eliminates magnetic transients that could inductively trip a
breaker’s control (bus differential relay), if left in the test
circuit.
The unique design allows the weight and size of the
DLRO200-115 to be kept to a minimum; the instrument
weighs less than 32 lbs. (14.5 kg). This small size plus a
water/dust ingress rating of IP54 makes the test set equally
at home in the workshop, on the production floor or in
the field.
300 sets of results may be stored in the test set’s on-board
memory for later download to a PC or may be outputted
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 easier to determine.
As well as adding notes to stored results, the alphanumeric
keypad allows you to set the test current directly by
keeping in the value required. The DLRO200-115 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.
The DLRO200-115 uses a four terminal measurement
technique to cancel the resistance of the test leads from
the measurement.
The test set 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. The DLRO200-115 will pass a current
continuously, and measure the load resistance 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 DLRO200-115 is ready to carry
Small and weighs less than 33 lbs (14.5kg)
Test currents from 10 A to 200 A d.c.
Filtered direct current output eliminates
magnetic transients
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 16 ft. (5m)
test leads and download software
Digital Low Resistance Ohmmeter
DLRO 200-115
DLRO200-115E Summary of contents
Page 1
... 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 DLRO200-115 is ready to carry DLRO 200-115 ...
Page 2
... DLRO200-115 detects that all four leads are connected, carries out a test and stops. When you move to the next joint the DLRO200-115 detects the already completed circuit automatically and carries out the next test, and so on until all joints have been tested ...