Page 1
DLRO test leads fitted with duplex Connectors
DLRO test leads fitted with duplex
Connectors
DLRO test leads
Carry one lead set and swap terminations
Simple push and twist for a quick change
Lockable twist cap secures the leads
Four terminal 10 A test lead system
Warning / Indicator lights for DLRO10 range
Extension leads available
DLRO test leads
DESCRIPTION
Duplex connect test lead system for use with any Megger 10 A
DLRO and BT51 instruments
The Megger DLRO duplex connect four terminal test lead system
is designed to provide the most cost effective and convenient way
to provide the user with all of the test lead terminations and lead
lengths required for the many different applications encountered in
low resistance testing.
At the centre of this unique test lead system is a bespoke connector
allowing terminations such as kelvin clips or duplex test probes to be
changed as required. There are two connector versions, one being
fitted with indicator LEDs that operate with the DLRO10 range
of instruments. The indicator LEDs provide enhanced safety and
convenience with indications as follows:
DLRO10, DLRO10X, DLRO10HD and DLRO10HDX
Warning of connection to hazardous live voltage
(Not DLRO10X, warning is given on the display)
When continuity is made
When a test complete and measurement is on instrument display
DLRO10X adds
Indication of pass / fail to user set test limits
All of these important indications are therefore seen near the point
of connection without needing to view the instrument display.
There is even a 6 m extension lead to provide the ultimate in
flexibility.
SAFETY WARNINGS
These safety warnings must be read and understood before the
instrument is used.
Always refer to the user manual of the instrument being used with
these test leads.
Do not touch the universal connector during test or while
connected to hazardous voltages.
Whenever possible, circuits should be de-energised before testing.
If it is impossible to de-energise the circuit, (e.g. high voltage
batteries cannot be switched off while their connections are tested)
the user must be aware of the dangers. The instrument terminals
will become live when connected to the circuit. Therefore when
used on hazardous voltages the Megger terminal cover (available
separately) must be used. See the accessories section of this user
guide.
When running any test, or when attached to a test load, do not
undo the modular connections. Isolate both test leads before
changing any part of the modular leadset.
These test leads on their own not safety CAT rated due to the bare
hook terminations. However when fitted with insulating instrument
terminal covers and a suitably rated test termination the overall
safety CAT rating will be the lowest of the ratings between the
instrument, the terminal covers and the test termination.
Page 2
DLRO test leads fitted with duplex Connectors
DLRO test leads
For example if used with a DLRO10HD fitted with terminal cover
part number 1002-390 and a pair of DP1-C duplex probes the
safety rating of the complete system will be CAT III 300 V. However
if the test terminations were changed to KC1-C Kelvin clips the
safety rating would drop to <30 V as the KC1-C are un-rated.
Testing inductive circuits can be hazardous:
After testing an inductive load there will be an amount of energy
stored in the inductance. This energy is released in the form of a
discharge current. Disconnecting an inductive load while current
is still flowing will cause a high voltage arc, which is a danger to
both the user and the item under test
The DLRO connector lit lead sets are fitted with a ‘test in progress
lamp’ associated with the TEST button which indicates that
current is flowing in the C1-C2 loop. For testing large inductive
resistances the current carrying leads should be connected
securely to the item under test before starting the test
It is not recommended that duplex handspikes be used to carry
out tests on inductive loads. If inadvertently using the handspikes
on an inductive load, the L1 lamp on the handspikes will flash
amber while discharge current flows, thereby duplicating the
function of the ‘I’ lamp on the instrument. It is important to
maintain contact until the L1 light stops flashing amber and turns
green indicating the end of the test
APPLICATION
DUPLEX CONNECT SYSTEM – COMPONENT PARTS
CONNECT TEST LEADS WITH INDICATOR LIGHTS
These duplex test leads are single test leads supplied without
terminations.
Test Lead (1 supplied) Order part number:
TL1.5-CL 1.5 m connect lit 1006-456
TL3-CL 3 m connect lit 1006-458
TL6-CL 6 m connect lit 1006-459
This product is not intrinsically safe. Do not use in an
explosive atmosphere.
Do not operate the test leads or connect to any external
system if any visible signs of damage are apparent or if they
have been stored for prolonged periods in unfavourable
conditions.
Inspection
Before each use of the test leads, perform a thorough visual
inspection to confirm that their condition is good, with no damaged
or broken insulation.
The Measurement Category rating of the measurement system is
that of the lowest rated component. If any part of the measurement
leads is unrated, the instrument is safe for connection only up to
30 V.
Lead resistances - C hook termination to connector
1.5m lead (1 off) 20 m ohm
3m leads (1 off) 30 m ohm
6m leads (1 off) 40 m ohm
Description
These duplex test leads are fitted with hook terminations for
connecting to an instrument and a connector plug equipped with
ultra-bright LED indicator lights viewable from any direction.
Test connection terminations are supplied separately.
The duplex connector incorporates a locking ring to prevent test
connections being pulled off in use.
Indicator lights operate with DLRO10, DLRO10X and DLRO10HD
via third connection plug. The function of these indicator lights are
listed at the beginning of this document in the introduction.
These leads are designed to fit:
DLRO10
DLRO10X
DLRO10HD
DLRO10HDX
2
Page 3
DLRO test leads fitted with duplex Connectors
DLRO test leads
CONNECT TEST LEADS WITHOUT INDICATOR LIGHTS
These duplex test leads are single test leads supplied without
terminations.
Test Lead (1 supplied) Order part number:
TL1.5-C 1.5 m connect 1006-452
TL3-C 3 m connect 1006-454
TL6-C 6 m connect 1006-455
Lead resistances - C hook termination to connector
1.5m lead (1 off) 20m ohm
3m leads (1 off) 30m ohm
6m leads (1 off) 40m ohm
Description
These duplex test leads are fitted with hook terminations for
connecting to an instrument and a Connex plug.
Test connection terminations are supplied separately.
The duplex connector incorporates a locking ring to prevent test
connections being pulled off in use.
These leads are designed to fit:
DLRO10
DLRO10X
DLRO10HD
DLRO10HDX
There are separate versions available to fit the BT51 as
follows:
Test Lead (1 supplied) Order part number:
TL3-C-BT51 3m connect for BT51 1007-023
TL6-C-BT51 6m connect for BT51 1007-024
CONNECT EXTENSION LEAD
EL6-C Extension Lead
6 m connect (1 supplied) 1006-460
Lead resistance 40 m ohm
Description
This 6 m long duplex connect extension lead is designed to extend
the duplex connect test leads that are without indicator lights.
More than one extension lead can be used to create even longer
test lead lengths. However the overall lead resistance must be taken
into account. The higher the overall loop resistance, including the
test piece, the lower the maximum test current available will be.
Any 10 A DLRO instrument fitted with a pair of 3 m test leads
and any test lead terminations (duplex probes or kelvin clips) can
have up to 2 x 6 m extension leads used and still be able to supply
10 A test current. This is because the overall resistance of this
combination is below the 100 m ohm lead resistance maximum
specified.
These extension leads are designed to fit any of these test
leads:
TL1.5-C
TL3-C
TL3-C-BT51
TL6-C
TL6-C-BT51
Note: These extension leads will not fit any of the leads fitted with
indicator lights
3
Page 4
LEAD TEST CONNECTION TERMINATIONS
AVAILABLE – SOLD INDIVIDUALLY
DLRO test leads fitted with duplex Connectors
DLRO test leads
DUPLEX CONNECT PROBE
DP1-C
Duplex Probe 1 - connect Order part number: 1006-450
Description
Duplex connect handspike with sprung loaded tips fitted with a
connector socket for easy connection to any connector test lead.
Replaceable probe tips have hardened needle points, gold plated for
excellent low resistance contact. Tips are sprung to provide 1.3 kg
of force using stainless steel springs.
Ideal for general applications where a good reliable connection is
required on none coated or corroded surfaces. To further limit the
possibility of damage to test piece waffle tip, sometimes referred to
a serrated tips are available as an option.
Maximum current rating 10 A
Connector to probe tip resistance
14 m ohm
Probe spacing between P and C tips:
6 mm
Will fit Any duplex connect test lead and
extension lead
Safety CAT III 600 V only when suitable
terminal covers are used
Spare / optional parts Order part number:
Replacement needle tips 2003-551
Waffle / serrated tips 25940-014
DUPLEX CONNECT TWIST PROBE
DTP1-C
Duplex Twist Probe 1 - Connect Order part number: 1006-449
Description
Duplex connect handspike with sprung twisting tips fitted with a
connector socket for easy connection to any connect test lead.
As the probe is pressed onto the test piece the tips compress and
twist at the same time providing 2.4 kg of spring force. Probe tips
are hardened and tempered before four equal-spaced flats are
ground to provide a square shape tip, making these probes ideal
for cutting through surface coatings or corrosion on test piece for a
good contact.
To assist reliability the probes internal electrical connections are
assisted by using an innovative volute spring eliminating the need
for a separate current carrying brad.
Maximum current rating 10 A
Connector to probe tip resistance
14 m ohm
Probe spacing between P and C tips:
10 mm
Will fit Any Duplex Connex test lead and
extension lead
Safety <30 V only
4
Page 5
DLRO test leads fitted with duplex Connectors
DLRO test leads
CONCENTRIC DUPLEX CONNECT PROBE
CP1-C
Concentric Probe 1 - connect Order part number: 1006-448
Description
Duplex connect concentric handspike with sprung loaded potential
tip fitted with a connector socket for easy connection to any
connector test lead.
The C connection is made via an outer hardened and tempered
steel crown with two contact points or tips.
The replaceable central potential probe tip has a hardened needle
point, gold plated for excellent low resistance contact. The P tip is
sprung to provide 1.3kg of force and uses a stainless steel spring.
Ideal for general applications where a good reliable connection
is required on none coated or corroded surfaces. The long probe
length and small diameter makes this probe ideal for reaching
deeply recessed terminal screws. There are also applications where
connection to rivet heads or screw/bolt heads are required. To
further limit the possibility of damage to test piece waffle tip,
sometimes referred to a serrated tip is available as an option.
Maximum current rating 10 A
Connector to probe tip resistance
10 m ohm
Probe tip spacing:
Between two outer C tips 7.6 mm
P tip central between two C tips with 3.8 mm spacing
Probe dimensions:
From finger guard to tip 110 mm
Diameter is tapered from 14 mm nearest the finger guard to 11 mm
at tip crown
Will fit Any duplex connect test lead and
extension lead
Safety <30 V only
Spare / optional parts Order part number:
Replacement P needle tip 2003-551
Waffle / serrated P tip 25940-014
HEAVY DUTY KELVIN CLIP
KC1-C
Kelvin Clip 1 - connect Order part number: 1006-447
Description
Duplex connect Kelvin Clip 1 is a heavy duty clip for general
purpose applications.
Maximum current rating 10 A
Connector to probe tip resistance
14 m ohm
Clip capacity: 40 mm
Will fit Any duplex connect test lead and
extension lead
Safety <30 V only
5
Page 6
DLRO test leads fitted with duplex Connectors
DLRO test leads
LARGE TOUCH PROOF INSULATED CLIP –
ADJUSTABLE JAW OPENING
KC2-C
Kelvin Clip 2 - connect Order part number: 1006-451
Description
Duplex connect Kelvin Clip 2 is a fully insulated touch proof clip for
applications where a high safety rating is required.
COMPLETE DUPLEX CONNECT LEAD SETS
AVAILABLE
PROBE LEAD-SETS
DH1-C
3M Duplex Handspike lead set, with connect (x2)
Order part number: 1006-442
Description
Two wire, four terminal duplex twist probe lead set 3m long.
Consists of the following:
DTP1-C Duplex Twist Probe 2 off
TL3-C-BT51 3m lead connect 2 off
Total leadset loop resistance 80m ohm
Will fit:
BT51
BT51 120V
Maximum current rating 20 A
Connector to clip resistance 10m ohm
Clip capacity: 52 mm to 7 5mm with sliding jaw
Will fit Any duplex connect test lead and
extension lead
Safety CAT IV 600 V
The actual safety CAT rating in use will always be the rating of
the lowest part of the complete system For example if used with
a DLRO10 without terminal covers the system will be unrated and
must not be connected to live voltages above 30 V.
In this example using a DLRO10HD a terminal cover should also be
used
DH2-C
6m / 20’ version of DH1-C above but only 1 included
Order part number: 1006-443
Description
Single duplex twist probe lead - 6m long.
Consists of the following:
DTP1-C Duplex Twist Probe 1 off
TL6-C-BT51 6m lead connect 1 off
Total resistance - 1 lead + 1 probe 50m ohm
Will fit:
BT51
BT51 120V
6
Page 7
DH4-C
Two wire, four terminal duplex probe lead set - 1.5 m
One lead fitted with indicator lights.
Order part number: 1006-444
DLRO test leads fitted with duplex Connectors
DLRO test leads
KELVIN CLIP LEAD-SETS
KC1-TL3-C
KL1-C Kelvin Clip 3m Lead set - connect (x2)
Order part number: 1006-462
Description
Two wire, four terminal duplex probe lead set 1.5 m long. One lead
fitted with indicator lights.
Consists of the following:
DP1-C Duplex Probe 2 off
TL1.5-C 1.5 m connect lead 1 off
TL1.5-CL 1.5 m connect lead
with indicator lights 1 off
Total leadset loop resistance 48m ohm
Will fit:
DLRO10
DLRO10X
DLRO10HD
DLRO10HDX
Description
Two wire, four terminal kelvin clip lead set 3m long.
Consists of the following:
KC1-C Kelvin clip 2 off
TL3-C 3m connect lead 1 off
TL3-CL 3m connect lead
with indicator lights 1 off
Total leadset loop resistance 88m ohm
Will fit:
DLRO10
DLRO10X
DLRO10HD
DLRO10HDX
DH4-CHDC
Order part number: 1006-463
As DH4-C but supplied with DLRO10HD terminal Cover for CATIII
300 V rating
DH5-C
Order part number: 1006-445
as DH4-C but 3m long
KC2-TL3-C
KL2-C Insulated Kelvin Clip - Test Lead 3 m connect (x2)
Order part number: 1006-461
Description
Two wire, four terminal insulated kelvin clip lead set 3m long.
Consists of the following:
KC2-C Insulated kelvin clip 2 off
TL3-C 3 m connect lead 1 off
TL3-CL 3 m connect lead
with indicator lights 1 off
7
Page 8
Total leadset loop resistance 80m ohm
Will fit:
DLRO10,
DLRO10X
DLRO10HD
DLRO10HDX
DLRO test leads fitted with duplex Connectors
DLRO test leads
ORDERING INFORMATION
Description Order Code
Duplex connect system
Component parts - one of each supplied
TL1.5-CL
Connect test leads with indicator light - 1.5 m 1006-456
TL3-CL
Connect test leads with indicator light - 3 m 1006-458
TL6-CL
Connect test leads with indicator light - 6 m 1006-459
TL1.5-C
Connect test lead without indicator light - 1.5 m 1006-452
TL3-C
Connect test lead without indicator light - 3 m 1006-454
TL6-C
Connect test lead without indicator light - 6 m 1006-455
TL3-C-BT51
Connect test leads for BT51 - 3 m 1007-023
TL6-C-BT51
Connect test leads for BT51 - 6 m 1007-024
EL6-C
Connect Extension Lead - 6 m 1006-460
Lead test connection terminations available
Terminations sold individually
DP1-C Duplex connect probe 1006-450
DTP1-C Duplex connect twist probe 1006-449
CP1-C Concentric duplex connect probe 1006-448
KC1-C Heavy duty kelvin clip 1006-447
KC2-C Insulated connect Kelvin clip 1006-451
Description Order Code
Complete duplex connect lead sets
DH1-C
Two wire, four terminal duplex twist probe lead set - 3m 1006-442
DH2-C
Single duplex twist probe lead - 6m 1006-443
DH4-C
Two wire, four terminal duplex probe lead set - 1.5 m
One lead fitted with indicator lights. 1006-444
DH4-CHDC
Two wire, four terminal duplex probe lead set 1.5 m long
One lead fitted with indicator lights
DLRO10HD terminal Cover 1006-463
DH5-C
Two wire, four terminal duplex probe lead set - 3 m
One lead fitted with indicator lights. 1006-445
Kelvin clip lead-sets
Two wire, four terminal kelvin clip lead set - 3 m 1006-462
Two wire, four terminal insulated kelvin clip lead set - 3 m
1006-461
SALES OFFICE
Megger Limited
Archcliffe Road Dover
CT17 9EN England
T +44 (0) 1304 502101
E UKsales@megger.com
DLROTestLeads_DS_en_V06
www.megger.com
ISO 9001
The word ‘Megger’ is a registered trademark
Loading...