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BS EN IEC 61482-1-1:2019 Live working. Protective clothing against the thermal hazards of an electric arc - Test methods. Method 1: Determination of the arc rating (ELIM, ATPV and/or EBT) of clothing materials and of protective clothing using an open arc, 2019
- undefined [Go to Page]
- Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
- English [Go to Page]
- CONTENTS
- FOREWORD
- 1 Scope
- 2 Normative references
- 3 Terms, definitions, symbols and units [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols and units
- 4 Principle of test procedures A and B [Go to Page]
- 4.1 Procedure A – Material open arc test procedure
- 4.2 Procedure B – Garment open arc test procedure
- 5 Significance and use of the test procedures A and B [Go to Page]
- 5.1 General
- 5.2 Procedure A – Material open arc test procedure
- 5.3 Procedure B – Garment open arc test procedure
- 6 Test apparatus [Go to Page]
- 6.1 General
- 6.2 Calorimetric sensors [Go to Page]
- 6.2.1 Calorimeter construction
- 6.2.2 Panel sensor construction
- Figures [Go to Page]
- Figure 1 – Example of calorimeter construction
- Figure 2 – Example of the panel sensor construction [Go to Page]
- 6.2.3 Monitor sensor construction and positioning
- Figure 3 – Example of monitor sensor construction, with optional cover plate
- 6.3 Panel construction
- Tables [Go to Page]
- Table 1 – Positioning of monitor sensors depending on incident energy exposure
- Figure 4 – Panel
- 6.4 Mannequin construction
- Figure 5 – Example of material clamping assembly of a panel
- 6.5 Arrangement of panels and monitor sensors for testing according to Procedure A
- 6.6 Arrangement of mannequin(s) and monitor sensors for testing according to Procedure B
- Figure 6 – Arrangement of three two-sensor panelswith monitoring sensors (top view) for testing according to Procedure A
- Figure 7 – Relative positioning of arc electrodes and ofmannequin(s) and monitor sensors for testing according to Procedure B
- Figure 8 – Examples of mannequin configuration
- 6.7 Supply bus and electrodes [Go to Page]
- 6.7.1 General
- 6.7.2 Structural cage arrangement
- Figure 9 – Example of cage arrangement (supply bus, bus tubes and arc electrodes) shown together with three panels for testing according to Procedure A (monitor sensors are not shown) [Go to Page]
- 6.7.3 Electrodes
- 6.7.4 Fuse wire
- 6.8 Electric supply
- Figure 10 – Relative positioning of cage arrangement (supply bus, bus tubes and arc electrodes) and of one torso mannequin and its monitor sensors for testing according to Procedure B
- 6.9 Test-circuit control
- 6.10 Data acquisition and data processing system [Go to Page]
- 6.10.1 General
- 6.10.2 Data acquisition
- 6.10.3 Signal synchronization
- 7 Operator safety
- 8 Specimen preparation [Go to Page]
- 8.1 Description of the test specimens [Go to Page]
- 8.1.1 Test specimens for Procedure A
- 8.1.2 Test specimens for Procedure B
- 8.2 Pre-treatment of test specimens by cleaning
- 8.3 Pre-conditioning of the test specimens
- 9 Calibration and verification [Go to Page]
- 9.1 Data acquisition system pre-calibration
- 9.2 Verification of calorimeters
- 9.3 Arc exposure and apparatus verification for the two-sensor panels and the monitoring sensors [Go to Page]
- 9.3.1 Set-up of electrodes and fuse wire
- 9.3.2 Positioning of the two-sensor panels, mannequins and monitor sensors
- 9.3.3 Verification bare shot
- 9.3.4 Verification bare shot test protocol
- 10 Test apparatus care and maintenance [Go to Page]
- 10.1 Surface reconditioning
- 10.2 Care of panels, mannequins and sensors
- 10.3 Care of electrodes
- 11 Test procedures [Go to Page]
- 11.1 Procedure A – testing with panels [Go to Page]
- 11.1.1 Test parameter and settings
- 11.1.2 Sequence of tests with test specimens of material or material assembly
- 11.1.3 Criteria for set of data obtained from iterative process of test shots
- 11.2 Procedure B – testing with mannequins [Go to Page]
- 11.2.1 Test parameters and settings
- 11.2.2 Single test or sequence of tests with test specimen(s) of garment or garment assembly
- 11.3 Air ventilation and initial temperature of sensors
- 11.4 Specimen mounting [Go to Page]
- 11.4.1 Procedure A – testing with panels
- 11.4.2 Procedure B – testing with mannequins
- 11.5 Specimen description
- 11.6 Test protocol
- 12 Test results [Go to Page]
- 12.1 Heat calculation [Go to Page]
- 12.1.1 General
- 12.1.2 Copper heat capacity
- 12.1.3 Incident and transmitted energy
- 12.1.4 Panel sensor response (transmitted energy (Et) comparison with Stoll curve)
- 12.1.5 Monitor sensor responses (incident energy (Ei))
- Figure 11 – Typical average transmitted energy curves Qt,avg (i.e. average response of the two sensors of same panel) for test specimens
- 12.2 Determination of arc thermal performance value (ATPV)
- 12.3 Determination of breakopen threshold energy (EBT)
- 12.4 Determination of the incident energy limit (ELIM)
- 12.5 Visual inspection
- Table 2 – Reporting requirements and rating of visual inspection performance in case of testing clothing material(s) according to Procedure A and garment(s) or an assembly of garments according to Procedure B
- 12.6 Arc rating [Go to Page]
- 12.6.1 Arc rating of a material or material assembly
- 12.6.2 Arc rating of a garment or garment assembly
- 13 Test report [Go to Page]
- 13.1 Reporting requirements common for tests according to Procedures A and B
- Table 3 – Visual assessment criteria in case of testing garment(s) or a garment assembly according to Procedure B
- 13.2 Reporting requirements specific for tests according to Procedure A
- 13.3 Reporting requirements specific for tests according to Procedure B
- Annex A (informative)Logistic regression technique
- Annex B (informative)95 % confidence intervals of ATPV and EBT [Go to Page]
- Figure B.1 – Probability density function (PDF)
- Figure B.2 – Cumulative density (CDF)
- Table B.1 – Example of incident energy X and binary response Y (fulfillment of Stoll criteria) for 21 test shots
- Figure B.3 – Graph with probability, lower and upper limits
- Annex C (informative)Iterative process of test shots of Procedure A
- Annex D (informative)Example materials for insulating and mounting boards [Go to Page]
- D.1 General
- D.2 Materials for use as thermally insulating mounting board (6.2)
- D.3 Materials for use as mounting board, but not sufficiently thermally insulating for use as insulating board (6.3)
- Annex E (informative)Recommended provisions for use of the test methodfor accident replication and for research
- Bibliography [Go to Page]
