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Doble LCM500 Leakage Current Monitor

LCM500

LCM500 Leakage Current Monitor

A surge arrester may be inexpensive, but it has an important role in protecting your transformers. The Doble LCM500 can measure condition while the arrester is still in service, measuring the quality of the metal oxide blocks and.

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M2K engineers testing a distribution transformer with Vanguard instruments at Energypac

Overview

A surge arrester may be inexpensive, but it has an important role in protecting your transformers. The Doble LCM500 can measure condition while the arrester is still in service, measuring the quality of the metal oxide blocks and helping manage the risk of failure. With the LCM500, it takes less than 15 minutes to establish that your surge arresters are healthy and the transformer

Well-proven and acknowledged monitoring technique using third-order harmonic analysis with compensation. Rated according IEC 60099-5 as the best field monitoring technique for Metal Oxide Surge Arresters (MOSA). LCM500 measurements are automatically normalized to standard ambient temperature (+20°C) and 0.7x rated arrester voltage based on recorded temperature and operating voltage during field measurement. Measurements performed under different conditions can thereby

Digital radio communication at 434.075434.525 MHz* Probes can be set at 16 distinct channels Probes are in addition separated by their serial

Key capabilities

  • Portable, battery-operated instrument for regular condition
  • Unique identification of each surge arrester makes data
  • Instrument can store 1000 surge arrester IDs and
  • Defines individual surge arrester types including operational
  • Software includes possibility to perform evaluation of groups of
  • Safe and effective assessment of metal oxide surge arresters

Specification

Indicative specification for Doble LCM500 Leakage Current Monitor
Total arrester leakage current 200 – 16000 μA
Frequency range 47 – 63 Hz (system voltage 50Hz or 60Hz)
Accuracy ±5 % or ±5 μA

Indicative specification for guidance. Confirm the current manufacturer datasheet for the configuration being quoted.

Typical applications

  • Doble leakage current monitors can be used to trend the condition of all types of metal oxide surge arresters on an insulated base with one separate grounding system conductor

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