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ISA SCAR 10 Surge Arrester Testing

SCAR 10

SCAR 10 Surge Arrester Testing

SCAR 10 is used to check regularly the efficiency of the metal oxide surge arrester in service that are installed on the high voltage transmission and distribution networks. SCAR 10 performs the test according to the IEC standard.

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M2K engineers testing a distribution transformer with Vanguard instruments at Energypac

Overview

SCAR 10 is used to check regularly the efficiency of the metal oxide surge arrester in service that are installed on the high voltage transmission and distribution networks. SCAR 10 performs the test according to the IEC standard 60099-5 A1 ED. 1.0 Section 6: Diagnostic indicators of metal-oxide surge arresters in service - Method B1 and B2. An auxiliary circuit generates a triangular waveform of which the following values are known: peak value, rms value, third harmonic component; this allows to check the.

SCAR 10 comprises one measuring instruments and one special clip-on current transformer. SCAR 10 allows to carry out the control while the surge arrester is in service, analyzing by means of a special current clip-on transformer the leakage current in the surge arrester ground connection. The values of this current normally range from fractions of milliampere to a few milliampere, and are characterized by a third harmonic distortion whose value is an indicator of the deterioration of the surge arrester. The.

- LED indicating the measurement range: μA or mA - Low battery signaling on the display Third harmonic with compensation In case there is a doubt that the third harmonic comes from a heavy distortion of the voltage rather than the surge arrester itself, the auxiliary measuring probe provided with the SCAR 10 allows to measure this content quite easily in order to perform the compensation. This problem does not apply to HV arresters, as on HV lines the voltage distortion is almost negligible (typically 0.2%), while.

Key capabilities

  • On-line diagnostic of metal oxide surge
  • According to IEC 60099-5 A1 "Diagnostic
  • Third harmonic analysis of leakage current with
  • Extensive field experience
  • Easy, fast and reliable diagnostic method
  • Safe lightweight equipment

Specification

Indicative specification for ISA SCAR 10 Surge Arrester Testing

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

Typical applications

  • SCAR 10 is used to check regularly the efficiency of the metal oxide surge arrester in service that are installed on the high voltage transmission and distribution networks
  • SCAR 10 performs the test according to the IEC standard 60099-5 A1 ED
  • 1.0 Section 6: Diagnostic indicators of metal-oxide surge arresters in service - Method B1 and B2
  • An auxiliary circuit generates a triangular waveform of which the following values are known: peak value, rms value, third harmonic component

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