Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape

Applies to all insulating liquids, used and unused, the kinematic viscosity of which is lower than or equal to 300 mm2/s at 40 °C.

Isolierflüssigkeiten - Lineare Flammenausbreitung - Prüfverfahren unter Verwendung eines Glasfaserbandes

Isolants liquides - Propagation linéaire de la flamme - Méthode d'essai utilisant un ruban en fibres de verre

S'applique à tout isolant liquide usagé ou non, dont la viscosité est inférieure ou égale à 300 mm2/s à 40 °C.

Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape (IEC 1197:1993)

General Information

Status
Published
Publication Date
31-Jul-1997
ICS
29.040.01 - Insulating fluids in general
Technical Committee
TPD - Fluids for electrotechnical applications
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Aug-1997
Due Date
01-Aug-1997
Completion Date
01-Aug-1997
Ref Project
EN 61197:1994 - Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape

Overview

EN 61197:1994 - Insulating liquids - Linear flame propagation - Test method using a glass‑fibre tape - is a European (CLC) test standard that specifies a laboratory method to evaluate linear flame propagation in insulating liquids. The standard applies to all insulating liquids, used and unused, whose kinematic viscosity is ≤ 300 mm²/s at 40 °C. EN 61197 is based on IEC 1197:1993 and is intended to provide reproducible, comparable results for assessing how a liquid supports flame spread along a glass-fibre substrate.

Key Topics

  • Scope and applicability: Covers insulating fluids with kinematic viscosity up to 300 mm²/s at 40 °C; includes both new and in-service liquids.
  • Test principle: Uses a glass‑fibre tape as the substrate to observe and measure linear flame propagation characteristics of the liquid under defined laboratory conditions.
  • Procedure overview: Defines the method for preparing samples, exposing the impregnated tape to a flame source and observing flame spread (standardized apparatus and sequence are specified in the full text).
  • Data and reporting: Specifies what observations and measurements are recorded and how results are reported to allow comparison between liquids.
  • Safety and repeatability: Addresses the need for controlled conditions to ensure reproducible and safe testing in laboratory environments.

(Note: the standard document contains the detailed apparatus, conditioning, and measurement instructions - consult the official text for exact procedural parameters.)

Applications

  • Insulating fluid manufacturers use EN 61197 to characterize flame propagation behavior during product development and QC.
  • Electrical equipment designers (transformers, capacitors, switchgear) reference test outcomes to assess fire performance of candidate insulating liquids.
  • Independent test laboratories and certification bodies perform standardized testing for compliance, product comparison, and reporting.
  • Asset managers and utilities can use results to evaluate risks associated with used or reclaimed insulating fluids in service.
  • Researchers studying flammability and fire behavior of dielectric liquids use the method for comparative research.

Related Standards

  • IEC 1197:1993 - original international method on which EN 61197 is based.
  • Other standards on insulating liquids (for example, standards addressing chemical properties, electrical properties and fluid quality) are typically used alongside EN 61197 when assessing overall suitability of insulating fluids.

Keywords: EN 61197, insulating liquids, linear flame propagation, glass‑fibre tape, test method, kinematic viscosity, IEC 1197.

Frequently Asked Questions

SIST EN 61197:1997 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape". This standard covers: Applies to all insulating liquids, used and unused, the kinematic viscosity of which is lower than or equal to 300 mm2/s at 40 °C.

Applies to all insulating liquids, used and unused, the kinematic viscosity of which is lower than or equal to 300 mm2/s at 40 °C.

SIST EN 61197:1997 is classified under the following ICS (International Classification for Standards) categories: 29.040.01 - Insulating fluids in general. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase SIST EN 61197:1997 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-avgust-1997
Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape
(IEC 1197:1993)
Insulating liquids - Linear flame propagation - Test method using a glass-fibre tape
Isolierflüssigkeiten - Lineare Flammenausbreitung - Prüfverfahren unter Verwendung
eines Glasfaserbandes
Isolants liquides - Propagation linéaire de la flamme - Méthode d'essai utilisant un ruban
en fibres de verre
Ta slovenski standard je istoveten z: EN 61197:1994
ICS:
29.040.01 Izolacijski fluidi na splošno Insulating fluids in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...

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The article highlights the standard test method SIST EN 61197:1997, which is related to insulating liquids and their linear flame propagation. This method specifically involves using a glass-fibre tape. The standard applies to all insulating liquids, whether they are used or unused, as long as their kinematic viscosity is 300 mm2/s or lower at a temperature of 40 °C.

기사 제목: SIST EN 61197:1997 - 절연 유체 - 선형 화재 전파 - 유리 섬유 테이프를 이용한 시험 방법 기사 내용: 이 방법은 모든 절연 유체에 적용되며, 사용된 것과 사용되지 않은 것을 가리지 않습니다. 다만, 40°C에서의 운동 점도가 300mm2/s 이하인 경우에만 적용됩니다.

기사 제목: SIST EN 61197:1997 - 절연 액체 - 직선 화염 전파 - 유리 섬유 테이프를 사용한 시험 방법 기사 내용: 이 기사는 모든 절연 액체에 적용됩니다. 사용되거나 사용되지 않은 절연 액체에 모든 절연 액체를 포함하며, 40°C에서의 운동 점성도가 300 mm2/s 이하인 경우이다.

記事のタイトル：SIST EN 61197:1997 - 絶縁液体 - 線形火炎伝播 - ガラス繊維テープを使用した試験方法 記事の内容：この記事は、40℃での動粘度が300 mm2/s以下の範囲で、使用済みおよび未使用のすべての絶縁液体に適用されます。

The article discusses a standard test method, SIST EN 61197:1997, which evaluates the linear flame propagation of insulating liquids using a glass-fibre tape. This method applies to all insulating liquids, regardless of whether they have been used or not, as long as their kinematic viscosity does not exceed 300 mm2/s at 40 °C.

記事のタイトル：SIST EN 61197:1997 - 絶縁液体 - 線形燃焼伝播 - ガラス繊維テープを用いた試験方法 記事の内容：この方法は、使用済みおよび未使用の絶縁液体に適用されます。ただし、40℃での動粘度が300mm2/s以下の場合に限ります。