Substation Arrester Assessment Service - assessment

By: Arresterworks  09-12-2011

Pre Site Visit Meeting

  • Set clear objectives and identify all locations that need assessment
  • Initial training of personnel is desired by client.
  • Review existing data.

Site Visit Along with client personnel as desired by the client, each site is assessed and the following competed.

  • Arrester Losses measured using state of the art watts loss metering.
  • Arrester age and type recorded.
  • Arrester thermal profile measured.
  • Arrester physical condition assessed.
  • Arrester location relative to protected equipment documented.
  • Protected equipment assessed BIL, BSL and Age.
  • Arrester Failure mode type determined.
  • Permanent monitoring equipment installed if desired.
  • New arrester installation options analyzed.
  • Complete set of photos collected.

Arrester Condition Assessment Report and RecommendationsWithin one week of the site visit, there will be a complete report on the visit with the following.

  • Condition of the assets relative to residual life
  • Losses summarized.
  • Failure mode analysis
  • Margin of Protection Analysis
  • Recommendations for replacement if necessary
  • Purchase assistance if desired.
  • Installation change recommendation if necessary
  • Recommendation on monitoring options.
Arrester Condition Assessment Brochure

Call ArresterWorks at +1 (716) 307-2431

Other products and services from Arresterworks


Training Options

Fundamentals of Arresters Protected Equipment Considerations Field Testing of Arresters Overview of Arrester Suppliers EMTP Modeling of Arresters. This Seminar is intended for Substation or Transmission Standard Engineers, Operations Personnel, Substation Packagers and Consulting Engineers. Fundamentals of Surges How to Select a TLA TLA Mechanical Considerations TLA Disposal Trends in the Industry Compact Line Considerations.



New requirements for arresters will be issues that cover testing and evaluating arrester energy handling capabilities. Thermal Energy Rating Verification Tests Sequence and Evaluation. A new edition of IEC 60099-4 and IEEE C62.11 will be published. Surge Energy Rating Verification Test Sequence and Evaluation. Any stake holder that is interested in arrester standards. 10:00 to 11:00am Eastern Standard Time on February 25th.


Insulation Coordination Studies

The purpose of insulation coordination is to insure that insulation used in an electrical power system is adequate for the environment in which it is applied and to understand the probability of insulation failure under transient conditions. The resulting current levels in the station are quite low relative to direct strikes, but all that is needed to fail insulation is voltage and not current.


Surge Protection Seminars

This in-depth course is designed for those responsible for the reliability of substations, distribution systems, and transmission systems. Announcing a 1.5 day Surge Protection Seminar plus a .5 day Seminar on Lightning Studies Using ATPJuly 27-28. Reliability engineers and other reliability personnel responsible for continuous improvement. Lightning is the second or third most significant cause of outages on most power systems.


Substation Arrester Assessment Service - failure analysis

Leak checking using the appropriate method of failed and unfailed partner arresters. Close-up photography and microscopic photography to identify cause of failure. This is the most comprehensive analysis of failed arresters anywhere. Analysis of electrical characteristics of available disks. Gas analysis of unfailed partner arresters if available. In depth examination of the available parts.