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EN ISO 20471

The EN ISO 20471 standard specifies requirements for hi-visibility clothing which is capable of visually signalling users presence. Everyday workers are faced with potential risks and hazards that can be dangerous to one's life therefore safety is vital amongst a workplace. Increasing the wearers visibility is important in promoting safety at work so it is essential all PULSAR® garments meet the EN ISO 20471 hi-visibility standard. 

Every garment differs on the level of hi-visibility conformity. Please see the classes below:

Class 3 - Highest class, typically consists of upper body and full sleeved garments

Class 2 - Mid level, typically consists of short or no sleeve garments and some trousers

Class 1 - Lowest level, typically consists of lower body or partially fluorescent garments



Each waterproof garment must offer protection against water penetration and breathable properties. EN343 is a European Standard for protective clothing that helps protect a wearer against wet weather. The protection against water penetrations comes in 3 classes:


Class 4 - Highest level of wet weather protection

Class 3 - High level of wet weather protection

Class 2 - Medium level of wet weather protection

Class 1 - Minimum Level of wet weather protection

Breathable properties

Class 4 - Level 3 water vapour resistance (breathability)

Class 3 - Level 3 water vapour resistance (breathability)

Class 2 - Level 2 water vapour resistance (breathability)

Class 1 - Level 1 water vapour resistance (breathability) 


RIS 3279

The Rail Group Standard mandates minimum requirements for hi-visibility clothing that is to be provided for wearing by people on the lineside or on the near the line. It appears to all hi-visibility clothing worn in order to meet the requirements of GE/RT800 Rule Book.

Class 2 - The rail industry has now replaced GO/RT 3279 Issue 8. However, garments previously certified to GO/RT 3279 continue to meet the requirements of the rail industry standard. 


EN ISO 11611

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The EN ISO 11611 certified safety clothing must protect the wearer from spark and accidental flame contact. It can help protect workers such as welders, rail workers, miners etc. The standard is divided into two classes with different levels of protection. 


Class 2 - High level of protection for more hazardous welding situations

Class 1- Lower level of protection of less hazardous welding situations 


EN ISO 11612 certified workwear that protects the wearer against heat and fire. The protection level is monitored by the below format:

A: Limited flame spread (essential condition) - fabric combination confirms to EN 14115 index 3 (Limited Flame Spread)

B: (B1-B5) - Insulation against convection hear

C (C1-C4) - Insulation against radiant heat

D (D1-D3) - Insulation against molten aluminium 

E (E1-E3) - Insulation against molten cast iron

F (F1-F3) - Insulation against heat


EN ISO 11612

EN1149-1 /



This standard covers 2 test methods (EN1149-1/EN1149-3) and the performance requirements (EN1149-5). It specifies material and design requirements for electrostatic dissipative protection clothing used as part of total earthed system to avoid incendiary discharge of static electricity. Garments meeting this standard do not offer protection from mains voltage.


IEC 61482-2 is the European standard for the thermal hazards of an arc flash. This standard includes requirements for material testing and additional information for garments constructed from compliant materials. 

Garments certified to this standard are defined as complex design and are subject to annual audits under Article 11 of the PPE Directive.


During an arc blast plasma clouds, flames, radiation and metal splashes from the electrodes explode. Extreme risk of second and third degree body burns from the intense heat.

When human tissue is raised from the normal temperature of 36°C to above 44°C, we start to feel pain. If the skim temperature rises to 55°C, a first degree burn will occur after 20 seconds followed by second and third degree burns. The degree of burning depends on the intensity of the heat transfer to the skin and its duration. 


EN 61482-1-1 Determination of arc rating using Open Arc test - APTV, EBT, ELIM

Fabric is quantified in terms of its Arc rating, expressed in cal/cm², that value being either:

ATPV (Arc Thermal Performance Value) - Numerical value of incident energy at which the heat transfer through the test specimens is enough to reach the stoll criteria with 50% probability 

EBT (Energy Breakopen Threshold) - Numerical value of incident at which breakopen occurs with 50% probability

ELIM (Energy Limit) - Numerical value of incident energy below which there is no data point with the amount of heat transmitted through the product reaching the stoll criteria, or with the fabric exhibiting breakopen

Arc rating values are useful measure of the effectiveness of any fabric, an end user can predict  the incident energy they will receive from electrical working and pick the correct garment that will provide protection against the arc flash

EN 61482-1-2 Determination of arc protection class (APC 1 or 2) using the Box Test

Fabric is exposed to an electric arc confined in a specific box with a specific electrode arrangement. This special box design releases a constrained direct exposure on the fabric.

APC 1 - Arc Protection Class 1

Test current of 4kA and test voltage of 400V

APC 2 - Arc Protection Class 2

Test current of 7 kA and test voltage of 400V

Important consideration from EN 61482-2 - No undergarments like shirts, undergarments or underwear make of, for example, polyamide, polyester or acryl fibres which melt under arc exposure, should be used. This is the responsibility of the employee to ensure these items are not to be worn.

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IEC 61482-2


An ARC Thermal Value (APTV) refers to the maximum incident energy (in calories per centimetre squared) that protective equipment can be exposed to and prevent to onset of a second-degree burns when there is a 50% probability. 

An Energy Limit Value (ELIM_ is the point at which the clothing gives a 0% probability of enough energy getting through the garment to cause a second-degree burn. It is the new cal/cm2 measurement.

Ratings are based upon the total weight of the fabric and ratings can be stacked when using a layered system. A higher rating means better protection. To summarise, both ELIM and APTV are properties used to determine the effectivness of ARC Flash clothing.

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