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CHM Series

Cable height meter

 
  • Dramatically reduces measuring time
  •  Inherently safe
  •  Designed for ease-of-use
  •  Hand-held portability
  •  Calibration and maintenance free operation
  •  No physical connection to cables or wires
  •  Measures the height of up to six overhead cables

The CHM Series of Cable Height Meters utilize ultrasonic sound to determine the height of up to six overhead cables and wires. The instruments are designed to address specific measuring requirements on cables up to 75 feet (23 m). The CHM600 (C/N 659600) and CHM600E (C/N 659600E) are designed primarily for power cable applications, while the CHM2000 is designed for telecommunication applications.

The Cable Height Meters emit short bursts of sound which originate from the cone shaped transmitter. The microprocessor in the instruments calculates the elapsed time for the bursts of sound to be reflected from the cable back to the instruments. The result can be displayed in either feet and inches or meters. However, before the final measurement can be displayed, the air temperature must be measured because the speed of sound varies at approximately 0.2 percent per degree Celsius.

A temperature sensor, mounted at the front of the instruments, senses the actual air temperature. This information is sent to the microprocessor and incorporated into the algorithm. The distance is then displayed in meters or feet and inches depending on which was selected.

CHM Series Details

MS5000

Smart Grid medium voltage sensors for overhead line networks (4 to140 kV)

The MS5000 (Metrysense5000) Smart Grid medium voltage sensor for overhead line networks (4 to 140 kV) provides real-time grid information, giving you unprecedented visibility of your distribution grids through the accurate identification of high impedance faults and predictive analytics for deteriorating network components. It has been designed for FLISR (fault location, isolation, and service restoration), grid analytics, power quality, and flow monitoring.

  • Reliable online detection of all types of faults
  • Reduces the average interruption duration (SAIDI)
  • Reducing number of faults by identifying weak spots (SAIFI)
  • Powerful cyber security capabilities
  • Unique proprietary algorithms to detect high impedance faults with high accuracy
  • Power harvesting for line currents as low as 1.5 A
  • Radio communication for rural areas with no cellular coverage
  • Operates with earthing systems including solid-grounded, floating neutral, SWER, and Petersen coil
  • Connection to existing DMS systems
  • Provides on-line grid visibility of currents, power flow etc.
  • Reduces wildfire risk, increases safety
  • Fast and easy installation

MS5000 Datasheet

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