Task Force - Chair P. McShane Recommended Terminology for the use of - - PowerPoint PPT Presentation

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Task Force - Chair P. McShane Recommended Terminology for the use of - - PowerPoint PPT Presentation

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Task Force - Chair P. McShane Recommended Terminology for the use of Fluid, Oil, and Liquid across all the Transformer Standards, Guides and Best Practices Presented Nov 2, 2011 in Boston at Standards SC meeting. Insulating Fluids and

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Task Force - Chair P. McShane

  • Recommended Terminology for the use of

Fluid, Oil, and Liquid across all the Transformer Standards, Guides and Best Practices

  • Presented Nov 2, 2011 in Boston at Standards

SC meeting.

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Insulating Fluids and C57 Series

Task Force to review and report in a white paper nomenclature uniformity issues and locate clauses that should consider including

  • r excluding alternative fluids.
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SLIDE 3

Stds SC C57 Review Project Focus

  • Various nomenclatures used for transformer

dielectric coolants. Should create uniformity

  • Omissions of various alternative fluids in existing

clauses even though inclusion is technically valid.

  • Clauses where generic oil terms are used but

should be limited to mineral oil for technical reasons.

  • Clauses where revisions may be necessary based
  • n the different fluid technical properties.
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SLIDE 4

Example: Modify based on Different Characteristics

  • Power Factor Limit of Transformer

– Value dependent on insulation system (paper and fluid) – Esters have higher typical dissipation factor than MO, which will cause higher transformer power factor readings even with all other variables equal.

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TF Approved 4/13/11

  • Patrick McShane Accepted Chair Position
  • Outcome of TF will be a white paper on the

C57 set review findings.

  • Will use current new 2011 Collection
  • Volunteers Requested.
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Examples: Nomenclature Consistency

  • Terms may be found in C57:

– Oil – Mineral Oil – Liquid Filled – Transformer Oil – Silicone, High Molecular Weight Hydrocarbon, Natural Esters – Insulating Liquids – Synthetic Insulating Liquids

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Examples: Omissions

  • IEEE Std C57.12.34™-2004

– IEEE Standard Requirements for Pad- Mounted,Compartmental-Type, Self-Cooled, Three-PhaseDistribution Transformers (2500 kVA and Smaller1.2 Scope – This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz, mineral-oil-immersed,

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Example: Should be only for MO

  • Title DGA C57.106 : “IEEE Guide for

Acceptance and Maintenance of Insulating Oil in Equipment”

  • Recommend adding “Mineral” before Oil