Megger CFL510G Calibration Instruments
  • Megger CFL510G Calibration Instruments
  • Megger CFL510G Calibration Instruments

Megger CFL510G


Handheld Time Domain Reflectometer, 30 ft. to 15,000 ft. Range, 0.3 ft. Min. Resolution



Megger CFL510G (1001-790) is a handheld, compact Time Domain Reflectometer for locating faults on metallic cables. It has a minimum resolution of 0.1 m/0.3 ft. and a 5 km/15,000 ft. maximum range depending on velocity factor selected and cable type. Four output impedances (25, 50, 75, and 100 ohms) are available and a velocity factor between 0.2 and 0.99 will meet any cable test requirements.

The CFL510G has a simple selection option which, together with a four-way control switch, offers an intuitive operation for the user.


The CFL510G is primarily designed for linemen in both the communication and power industries. Specific capabilities include:


The CFL510G provides fast and accurate results when uncovering transmission related problems. It is designed to be carried on a linesman's belt and used in the first line of defense when diagnosing and locating cable faults.

Specific line activities identified by this unit include:

  • Bridge taps and splices n Presence of water in the cable
  • Opens in tip, ring, or sheath
  • Shorts between tip, ring, and/or sheath
  • Capacitive networks
  • Load coils
  • Wet splices and high-resistance splices


The CFL510G is ideal for testing the physical integrity of cables within a network. The unit is also capable of locating illegal cable taps.

Specific cable conditions identified include:

  • Bends or crimps in the cable
  • Cuts or shorts in the cable
  • Taps and splits
  • Water saturation


The CFL510G is an ideal tool for identifying faults on secondary power cables. This unit identifies:

  • Burnouts in aluminum conductors
  • Good splices, wet splices, and high-resistance splices
  • Shorts between phases
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