| CABLE TESTING & FAULT LOCATING
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DART Cable Analysis System with Power Fault Locator
• A complete cable fault locating solution
• Multiple test modes
- Arc Reflection
- Differential Arc Reflection
- Surge Pulse Reflection
- High-voltage Surge
- Proof & Burn
• Integrated coupling for arc reflection
and surge pulse reflection
• Simplified DART operation
- Auto range
- Auto fault distance
- Operator assist mode
The PFL-4000 Power Fault Locator System is specifically designed to meet power industry requirements in a compact, yet powerful solution for underground residential distribution (URD) topologies.
All important tools of cable fault locating are consolidated into one package: dc/tester burner, surge generator, and radar coupling. When utilized with the DART® Cable Analysis System, the combined instruments provide the following fault location techniques:
• Time Domain Reflectometry
• Digital Arc Reflection
• Surge Pulse Reflection
• Differential Arc Reflection
The PFL-4000 emphasizes portability, featuring all the basic fault locating tools within one rugged base package. It is a flexible stand-alone unit with an optional DART mounted in a hinged lid.
The PFL-4000 delivers a maximum energy surge of 1536 Joules at 16 kV, providing all necessary energy to condition and break down faults in cable, joints, and terminations. The system also includes a 20 kV proof tester and a 60 mA burner for testing and conditioning cable faults.
The collective system comprises the ideal tools for isolating a faulted cable section between transformers quickly, as well as measuring distance to the fault.
IMPULSE GENERATOR
15-kV, Dual-voltage, Heavy-duty Impulse Generators
• 15-kV Portable Model
• Dual-Voltage Model
• Heavy-Duty Model
Impulse Generators are designed to locate faults in power cable by the high voltage impulse method, in which a high-voltage impulse is transmitted down the cable to cause the fault to arc. The arcing fault is then pinpointed using an appropriate impulse detector.
Impulse Generators may also be used to perform voltage versus time acceptance tests, or to burn faults that fail to break down under impulse to reduce their resistance. Megger offers four models to meet every application
SUITCASE IMPULSE GENERATOR
120/240 Vac
• Easily portable
• Compact design
• Noiseless discharge technique
The Suitcase Impulse Generator is a lightweight and portable fault locating set that can be carried by one person and is effective on exposed cables rated up to 15 kV. A stepped impulse voltage selector enables the operator to choose output levels of 3,6,9 or 15 kV. The impulse is transmitted to the cable by a noiseless SCR rather than a mechanical switch or sparkgap
ELECTROMAGNETIC IMPULSE DETECTOR
Electromagnetic Impulse Detector
• Indicates direction of fault
• Works under all weather conditions
• Survives rough handling and transport
• Converts to voltage gradient tester with optional earth frame
• Long-lasting 9-volt battery
The Electromagnetic Impulse Detector has been designed to localize faults on buried cable by detecting the magnitude and polarity of current established on a cable during surging with a surge generator.
The instrument is composed of an amplifier module, sheath coil, and carrying case. It is typically used on network systems to isolate a fault between manholes. An optional earth frame and surface coil are available.
The Electromagnetic Impulse Detector can be used with Megger PFL Systems or with surge generators of other manufacturers
L1050 PORTABLE LOCATOR
L1050 Portable Locator
• Multiple frequencies
• Transmits AF or RF signals
• Peak detection
• Conductive or inductive tracing
The L1050 Portable Locator is a one-piece design that is lightweight and highly accurate. Operating the receiver at multiple frequencies optimizes performance for the specific needs of the user with accurate long or short range locates. The flexibility of the unit allows high power operation at low frequency to solve the difficult multi-point ground utility locating problem. A key operational issue of the L10 is the superior filtering of the receiver which picks up the transmitted signal easily at wait height. Operators no longer have to bend at awkward angles
L1070 AND L1071 PORTABLE LOCATORS
L1070 Portable Locator
• Multiple frequencies
• Transmits AF or RF signals or both
simultaneously
• Peak and null detection
• Passive 60 Hz
• Measures current flow in buried conductors
• Transmitter variable output power levels
Capable of locating long or short ranges, inductive or conductive, active or passive, the L1070 delivers quick and accurate results with a user-friendly interface. A special design feature on the L1070 allows the user to select and compare receiver information on two frequencies simultaneously, without having to return to the transmitter. The L1070 features push-button depth measurements up to 15 feet to quickly identify service depths prior to digging. A passive 60 Hz detection services as an excellent safety feature for identifying live underground primary and secondary utility cables. An optional ground return probe allows ground fault detection on unshielded electric services or sheath faults on telephone services through the technique of voltage gradient
Cable Route Tracer
Energized Cable Route Tracer
• Lightweight, battery-operated
• Locates, traces and measures depth
of buried power cables
• Two sensitivity ranges
The Cable Route Tracer is designed to locate, trace and measure the depth of buried energized power cables. The heart of the instrument is a compact, all-steel control box. It is attached to a precision-wound, swivel-mounted detecting coil that operates from three basic positions:
• Horizontal: for maximum deflection over the cable
• Vertical: for a null over the cable
• 45° angle: for a null at a horizontal
distance from the cable that is equivalent
to the cable depth
The receiver of the locator features a filtering circuit that responds only to the existing electrical energy radiating from the buried cable. The chronic problem of identification in congested areas is eliminated because the receiver is insensitive to telephone lines, gas and water pipes, and steel reinforcing.
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