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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The following software features are worth to mention beyond: More information in PDF format: Specification standards for product approval and selection. Thermal hazards from electric fault arc Guide to the selection of personal protective equipment for electrical work bisher: Page 1 of 1. BSD Arc Flash Software During the 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.
German Social Accident Insurance 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. Design German Social Accident Insurance e. One problem with the classification method was how to determine which Class is necessary for suitable protection of the electrical worker.
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. 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.
In this context, it must be observed that voltages up to 1, V a.
Size and expansion of the operated grid determined essential the amount of working places which has to be considered at a hazard assessment. Class 1 or Class 2 to use. Mon Oct 26, 1: You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum.
Energy parameters for thermal hazards to persons related to electric arcing. That means, that a working place related hazard assessment has to be made. The information contained herein is intended to support employers in their selection of suitable equipment e. Simply basing a Class on 4 kA and 7 kA did not provide a suitable criteria for application guidance. Besides the arc energy, the required test level of the PPE against electric arc will be shown as: Full disclosure and disclaimer: Do anyone knows about a arc flash calculation software that use DGUV method?
DGUV Information – Thermal hazards from electric fault arc Guide to the selection of personal protective equipment for electrical work bisher: This can reveal different results.
The IEEE Standard is an internationally recognized standard and is used as the basis for most major software company’s arc flash programs.
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I wonder how engeneers perfom calculation in Europe using IEC if there insn’t software to solve it. Especially for the working area of public electric energy supply, as well as for widespread industry grids is this fact associated with a considerable extra effort at the hazard assessment. Thank you Jim for such complete answer. Since these installations and networks frequently cannot be disconnected for technical and organisational reasons, work must be performed under live conditions.
Examples of work locations for determining transmission factor k T. You can also choose between a simplified and a precise calculation method. Depending on the electrical network and equipment configuration, electric arcing can be extremely hazardous:. Mon Dec 31, 5: High intensity electromagnetic radiation, particularly in the ultraviolet UV and infrared IR radiation bands, but also in the visible light band, which can lead to irreversible damage to the eyes and skin. The calculation method was developed by a group of well regarded industry experts from Germany.
Because doing manually or using excel spreadsheet is very dificult and not 518 for complex electrical networks. To prevent interruption and failure of the energy supply, installations 51188 be protected and maintenance and repair work must be performed. Fri Oct 23, 4: 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 second test is known as Class 2 and uses a 7, Amp current at Volts.
A dialogue orientated menu guidance and a data bank supports a preselection for 51888 parameters and installation requirements e. During the 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.
Besides the arc energy, the required test level of the PPE against electric arc will be shown as:. 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.
While an electric arc flash is rare in the normal working environment, its occurrence cannot be ruled out completely. On the one hand for the precise method can be arc protection class 1 enough, on the other hand the simplified method can demand ngi 2 for the same working place.