Save time in locating faults in power cables
A
Megger product story
Edited by the Engineeringtalk editorial team
Jan 31, 2002
Savings in time and money can be made on locating faults in power cables - particularly if they are buried or otherwise inaccessible - by using the latest hand-held time-domain reflectometers
Huge savings in time and money can be made on locating faults in power cables - particularly if they are buried or otherwise inaccessible - by using the latest range of Megger hand-held time-domain reflectometers from AVO International.
The compact, easy-to-use TDR500, TDR1000 and TDR2000 instruments operate by transmitting a pulse into the cable, which is reflected by faults, such as short circuits, bad splices or conductor breaks.
By measuring the time it takes for the reflected pulse to return from the fault, the instrument can calculate and display the exact distance to the problem.
Physical access is only required to the cable at one end, to connect the instrument, and the test takes just a few seconds to perform.
Both the TDR1000 and TDR2000 are suitable for use on live circuits up to 150V Installation Category III, or 300V Installation Category II.
By using test probes fitted with HRC fuses, the live working capability of these instruments is extended to 300V Installation Category III, and it can be further extended to 600V Installation Category III with the aid of an optional blocking filter.
The smallest and most competitively priced instrument in the range, the TDR500, is not suitable for live line working, but is a cost-effective choice for general-purpose use.
It offers five operating ranges, from 30 metres to 3 kilometres, and features a tough ABS case which provides IP54 protection.
Operation from dry cells or rechargeable batteries ensures maximum portability.
The TDR1000 adds a 10 metre range, and offers a transmission nulling feature which allows the detection of cable faults close to the instrument.
It also has a large graphical liquid crystal display, and includes versatile impedance matching facilities which allow its use with telecommunication, data and co-axial cables, as well as standard electrical LV cables.
The top model in AVO International's range of time-domain reflectometers is the TDR2000.
This provides measuring ranges up to 16 kilometres, and has dual test channels to allow comparative measurements to be made on pairs of cables.
It also stores up to 15 traces for later analysis, and is equipped with an RS232 port to allow test data to be downloaded to a PC.
Not what you're looking for? Search the site.
Contact Megger
Tel (UK)
Other Megger stories
-
KC leads for wind-turbine conductor testing
Megger's KC-series of test leads are said to be suitable for testing the continuity of lightning protection conductors in wind-turbine blades. -
Megger supplies test equipment to training schools
Trainees studying at two of Scottish Power's training schools are gaining experience with equipment and support material supplied by portable test equipment specialist Megger. -
Megger enhances MPRT to test to IEC 61850
Megger has introduced an IEC 61850 option for the MPRT, together with the new MGC (Megger Goose Configurator) software package. -
Megger unveils low-resistance ohmmeter
Megger's heavy-duty DLRO10HD low-resistance ohmmeter combines rugged construction with accuracy and ease of use. -
Pax Idax-300 tests transformer insulation
The Pax Idax-300 test set from Megger easily, quickly and accurately assesses the condition of the insulation in power transformers - a key indicator of future reliability and performance.
Browse by category
-
Capital Equipment (3,423)
- Capital Equipment (1)
- Compressors and Air Treatment (519)
- Electrical hardware (131)
- Electronics Manufacturing, Tools, Instruments (192)
- Machinery and Production Equipment (1,106)
- Manufacturing Machinery and Plant Equipment (468)
- Production line blowers and fans (65)
- Robotics, Handling and Storage (941)
- Consultancy and Services (909)
-
Control and Instrumentation (5,065)
- Cabling, Conduit, Signal Conditioning (807)
- CNC and Motion Controllers (187)
- Control and Instrumentation (2)
- HMIs/Operator Interfaces (295)
- Logic Controllers, Timers and Relays (96)
- Mid-range and Large PLCs (202)
- Plant- and Machine-Wide Communications (1,183)
- Plantwide control (1,336)
- Power Supplies, Uninterruptible Power (569)
- Smaller-Sized PLCs (388)
-
Drives, Motors and Controls (3,397)
- Drives, Motors and Controls (1)
- Industrial Drives/Controls (1,284)
- Industrial Motors (500)
- Linear Drives and Motors (115)
- Precision Motors and Gears (420)
- Stepper and Servo Drives, Motors, Controls (1,075)
-
Electrical and Electronic Equipment Design (4,209)
- Batteries, chargers and circuit protection (558)
- Connectors, Terminals, Busbars, Slip Rings (694)
- Electrical and Electronic Components (635)
- Electrical and Electronic Equipment Design (1)
- Electrical and Electronic Subassemblies (371)
- Enclosures and Equipment Cooling Fans (713)
- Knobs, Handles and Enclosure Hardware (425)
- PCs and Embedded Systems (812)
-
Engineering Design Software (6,232)
- 2D CAD software (201)
- 3D CAD software (1,162)
- CAM, CNC, production management software (572)
- Data, document management software (313)
- Electrical design software (165)
- Engineering Design Software (15)
- FEA and structural analysis software (374)
- File conversion software, data capture (355)
- Fluid, thermal, noise, vibration software (334)
- Materials design and moulding design software (152)
- Maths, charting, statistics, QA software (319)
- PLM and collaboration software (652)
- Process, instrumentation, automation software (261)
- Publishing and documentation software (230)
- Rendering, visualisation, styling software (201)
- Simulation, modelling, validation software (926)
-
Engineering Industry News, Resources (6,139)
- Electronic Resources for Engineers (278)
- Engineering Business News, Views (388)
- Engineering Conferences (432)
- Engineering Education, Resources, Standards (844)
- Engineering Exhibitions, Events (567)
- Engineering Guides, Newsletters (357)
- Engineering Industry Developments, Awards (635)
- Engineering Industry News, Resources (4)
- Engineering Industry Reports, Surveys (597)
- Engineering Recruitment, Employment (219)
- Engineering Seminars (405)
- Engineering Training Courses (442)
- Health and Safety Consultancy, Software (175)
- Health and Safety Events, Training, News (280)
- Health and Safety Legislation (402)
- Health and Safety Strategy, Risk Assessment (114)
- Machine Building (4,567)
-
Materials and Processing (2,993)
- Materials and components (2,236)
- Materials and Processing (5)
- Materials processing and testing (288)
- Rapid Prototyping (464)
-
Monitoring, Measurement and Quality (5,541)
- Data Acquisition Hardware and PC I/O Boards (479)
- Data acquisition Software and Communications (498)
- Data loggers (423)
- Electrical and Electronic Testing, PAT Equipment (636)
- Form/co-ordinate, optical, vision instruments (735)
- Gauges, Indicators and Instruments (445)
- Materials testing equipment (420)
- Monitoring, Measurement and Quality (1)
- Telecomms/network test equipment, software etc (156)
- Testing and Calibration Services and Information (509)
- Testing, analysing and monitoring equipment (1,239)
-
Powertrain Design (3,649)
- Bearings (958)
- Chains and belts (329)
- Gears, brakes, couplings and engines (1,456)
- Hydraulic Components (473)
- Lubricants (430)
- Powertrain Design (2)
-
Sensors (7,143)
- Accelerometers and Vibration Sensors (432)
- Barcode Sensors (103)
- Flowmeters and Flow Sensors (621)
- Gas, Chemical, Radiation, Magnetic Sensors (286)
- Humidity and Environmental Sensors (155)
- Level Sensors and Leak Detectors (529)
- Linear Position Sensors (408)
- Loadcells, Force Sensors, Torque Sensors (711)
- Pressure sensors (625)
- Proximity Sensors (708)
- Rotary Position, Tilt and Angular Sensors (551)
- Sensors (8)
- Temperature sensors (613)
- Vision and Colour Sensors (1,393)
- Small Mechanical Components, Joining, Tools (1,989)
- Valves, Pumps, Process Hardware (3,660)
