During the usage of the DGUV Information (BGI ) to determine the necessary protection level of the PPE against electric arcs are the information. – Thermal hazards from electric fault arc Guide to the selection of personal protective equipment for electrical work (bisher: BGI/GUV-I E). *The representative selection does not replace a risk assessment according to BGI transformer output. (kVA) tripping time of the protective device (ms).
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While an electric arc flash is rare in the normal working environment, its occurrence cannot be ruled out completely. Examples of work locations for determining transmission factor k T. The simplified method allows a small amount of specific installation knowledge, works therefore with higher safety additions. Electric arcs are not only induced by short circuiting, but can also occur between two current-carrying components, when they are separated from each other e.
Because doing manually or using excel spreadsheet is very dificult and not recommended for complex electrical networks. To this end, maintenance and repair work must be performed in electrical installations and networks. Mon Dec 31, 5: Full disclosure and disclaimer: Moreover, an overview of PPE selection is included in the ISSA International Social Security Association Guideline for the selection of personal protective equipment when exposed to the thermal effects of an electric fault arc 2nd edition The calculation method was developed by a group of well regarded industry experts from Germany.
For this reason, persons working in this environment will require reliable protection, especially because incorrectly performed work tasks can cause such arcing. Energy parameters for thermal hazards to persons related to electric arcing. Toxic gases and particles produced by melting and vaporised materials in the vicinity of the arc flash including electrodes.
Mon Oct 26, 1: For this purpose, tested high-quality products are indispensable. Design German Social Accident Insurance e. In this context, it must be observed that voltages up to 1, V a. Do anyone knows about a arc flash calculation software that use DGUV method? Thermal hazards from electric fault arc Guide to the selection of personal protective equipment for electrical work bisher: You can also choose between a simplified and a precise calculation method. Each consequence, in itself, can endanger the health and even the life of a person in proximity of the occurrence.
On the one hand for the precise method can be arc protection class 1 enough, on the other hand the simplified method can demand class 2 for the same working place. I wonder how engeneers perfom calculation in Europe using IEC if there insn’t software to solve it. If the material or assembly passes the first arc test, it is classified as “Class 1” If it passes the second test, it is classified as Class 2.
This guideline describes that persons working on or in the vicinity of live parts of electrical installations are generally exposed to the risk of arc faults — for example caused by short-circuits or maloperation. Thank you Jim for such complete answer. Page 1 of 1.
Class 1 or Class 2 to use. Standardisation of PPE against the thermal effects of electric fault arcing. The specific method is more complex, therefore certain saftey additions can be reduced.
BSD – Arc flash software
Standards for protective clothing outside the EU. German Social Accident Insurance e. Instructions for practical application with practical examples. Determination of system electric arc energy in the event of a fault.
Users browsing this forum: To prevent interruption and failure of the energy supply, installations must be protected and maintenance and bg work must be performed. The most serious personal risks are associated with the thermal effects of electric fault arcs. This supports the calculation of the electric arc energy, if the necessary value for the short-circuit current does not exist. A dialogue orientated menu guidance and a data bank supports a preselection for different parameters and installation requirements e.
The wide use of electrical energy in all areas of life leads to higher requirements on the safety and reliability of power supply systems. Simply basing a Class on 4 kA and 7 kA did not provide a suitable criteria for application guidance.
The first test, known as Class 1, uses a 4, Big short circuit current at Volts to develop the arc from the box. During 518 usage of the DGUV Information BGI to determine the necessary protection level of the PPE against electric arcs are the information about short-circuit current, grid voltage, arc burning time, installation construction form and the working distance necessary.
There are no corresponding incident energy values measured during the “box test” and the Class system does not have any listed attribute that could be used for selecting a protection class.
That means, that a working place related hazard assessment has to be made. In so doing, a methodology has been adopted based on standardised Box test procedures according to VDE see Annex 1. The following software features are worth to mention beyond: No registered users and 0 guests.
Depending on the electrical network and equipment configuration, electric arcing can be extremely hazardous:.