LFG-50

Underground cable route locator

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LFG-50 & PT-14 Cable route tracing Set, can be used for locating as well as tracing underground metal communications, such as any cables with metal cores as well as metal pipes. In addition, it provides operator with a quick detection of short circuits on cables as well as with an identification of a cable in a bunch.

LFG-50 is a 50 W low frequency generator with ability to inject a signal of three frequencies via direct connection to an object or via internal transmission loop antenna, which is built-in a cover lid. Basic frequencies are 491; 982 and 8440 Hz. There are options of using a single-frequency or multi-frequency signals at the output.

The power of the low frequency generator LFG-50 output signal can be adjusted up to 50 W with 2.5 W steps. This signal can be transmitted constantly or broken into separate blocks of 50 % duty cycle with 1 s repetition rate.

A load matching is made automatically. Main parameters, such as output power, load impedance, selected frequency are shown on OLED display. If a load is higher than 1000 Ω LFG‑50 automatically switches into output voltage setting mode. The output overload protection will trip, when operating on short-circuit loops (lower than 0.5 Ω).

MAIN FEATURES:

  • Portable and lightweight
  • Moistureproof and dustproof case
  • Advanced LiFePO4 internal battery with fast charging option
  • High-contrast graphic OLED display
  • Multifrequency operation
  • Operating frequencies can be changed upon request
  • Internal transmission loop antenna
  • Automatic load impedance matching
  • Ability to work with energized 0.4kV cables (inductive connection)
  • Overload protection

Cable Fault Detector PT-14 designed for fast and accurate searching for power cables and other communications, identification of coating defects and the depth, followed by mapping.

Technical Specifications

ParameterValue
Operating frequencies, Hz491/982/8440 (other frequencies –

upon request)

Max. Frequencies count, operated simultaneously3
Output power range, W0 – 50
Output power regulating step, W2.5
Frequency selectionmanual
Operating modesContinuous / Pulse
Loop impedance matching range, Ω0.5 – 1000
Loop impedance matching modeAuto
Measured parameters ranges:
Output voltage, V RMS0 – 300
Output current, A RMS0 – 9.99
Phase angle, º0 – 90
Pulse duty cycle, %50
Pulse repetition frequency, Hz1.0
Internal battery:
 Type LiFePO4
 Operating voltage, V DC 12
 Battery life, hours not less than 1
 Average charging time, hours 3
Power supply: 
Input voltage, V230 ± 10 %
Input voltage frequency, Hz50
Max. power consumption from mains, VA100
Output voltage, V12 – 15
Max. output current, А8
Dimensions, mm366 × 271 × 178
Net weight, kg, max8

 

Traser PТ-14 specification:

ParameterValue
Operating frequencies, Hz491/982/8440
Bandwidth:
RADIO mode, kHz10 − 36
ONLINE mode, Hz48 − 10 000
Sensitivity, μV1
Track depth measurment error, %, max5
Dimensions, mm700 × 300 × 140
Weight, kg, max2,4

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