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
06-Nov-1994
Withdrawal Date
30-Jun-1995
ICS
29.040.20 - Insulating gases
Technical Committee
CLC/SR 10 - Fluids for electrotechnical applications
Drafting Committee
IEC/TC 10 - IEC_TC_10
Parallel Committee
IEC/TC 10 - IEC_TC_10
Current Stage
6060 - Document made available - Publishing
Start Date
07-Nov-1994
Completion Date
07-Nov-1994
Ref Project
SIST EN 61197:1997 - 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

EN 61197:1994 is a standard published by CLC. 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.

EN 61197:1994 is classified under the following ICS (International Classification for Standards) categories: 29.040.20 - Insulating gases. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 61197:1994 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 CLC 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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제목: EN 61197:1994 - 절연액체 - 선형 화염 확산 - 유리 섬유 테이프를 사용한 시험 방법 내용: 본 규격은 40 °C에서 300 mm2/s 이하의 운동 점도를 가진 사용 및 미사용 모든 절연액체에 적용됩니다. 유리 섬유 테이프를 사용한 선형 화염 확산을 측정하는 이 시험 방법에 대해 다루고 있습니다.

記事のタイトル：EN 61197:1994-絶縁材料-線形炎伝播-ガラス繊維テープを用いた試験方法 記事内容：40 °Cでの動粘度が300 mm2/s以下である、使用済みおよび未使用のすべての絶縁材料に適用されます。

The article discusses the application of EN 61197:1994, which is a test method using a glass-fibre tape to measure linear flame propagation in insulating liquids. This test method is applicable to both used and unused insulating liquids with a kinematic viscosity lower than or equal to 300 mm2/s at 40 °C.

제목: EN 61197:1994 - 절연유 - 선형 화염 전파 - 유리 섬유 테이프를 사용한 시험방법 내용: 40 °C에서의 운동 점도가 300 mm2/s 이하인 모든 절연유에 적용된다.

The article discusses the EN 61197:1994 standard, which is related to insulating liquids and their flame propagation characteristics. This standard applies to all insulating liquids, both used and unused, with a kinematic viscosity that is less than or equal to 300 mm2/s at a temperature of 40 °C.

記事タイトル：EN 61197:1994 - 絶縁液体 - 線形の炎伝播 - ガラス繊維テープを用いた試験方法 記事内容：この規格は、40°Cでの運動粘度が300 mm2/s以下の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。この試験方法は、ガラス繊維テープを使用して線形の炎伝播を測定するものです。