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IEEE 484-2019 pdf free download
IEEE 484-2019 pdf free download.IEEE Recommended Practice for Installation Design and Installation of Vented Lead-Acid Batteries for Stationary Applications.
As with other batteries, there are hazards associated with vented batteries; therefore, proper precautions shall be observed in handling and installation. Work on batteries shall be perfoed only by knowledgeable personnel with proper training, proper tools, and personal protective equipment (I ‘I I .. Reteren c I I ‘I St d 1657’ 1 [16!’ for additional information.
A job hazard analysis shall be conducted prior to starting any task. This shall include a discussion with all personnel about all the hazards associated with the planned work. The discussion shall include required PPE. The prmarv hazards include electrical shock, arc flash, and chemicals (electrolyte). Lifting and handling hazards and tentiaI exsure to a thermal event may also exist.
The manufacturer’s safety data sheet (SDS) shall be consulted for associated hazards and first aid.
Every battery installation shall be evaluated for tential hazards. The arc-flash analysis (e.g., as shown in \F1’A 70E® ($101) shall be accomplished during the initial design and installation. Information concerning these risks shall be documented, and the intormation shall be posted and/or reside with the battery installation. Annex B can he used to help assess these hazards.
4.2 Electrical hazards
Because batteries are a means for storing electrical energy, any work associated with batteries or batten’ systems shall be considered work on enerzed electrical circuits or systems. h)cal codes or regulations may establish rules on approach boundaries, insulation of tools, and/or PPE and shall be consulted prior to the start of work.
4.2.1 Shock hazard
Systems at or below 50 v nominal (including all 48 V systems. are not considered to be shock hazards in the National Electric Code® (NEC®) (NFI’A 70® IB9l) and in NFP1\ 70E lB 101. The NFPA 70E handtx)ok and IEC TR 60479-5 standard 1B21 both state that the current and voltage thresholds for physiological effects are at least twice the value for dc as compared to ac. Both IEC TR 60479-5 and NFPA 70E set the touch voltage threshold at 100 V. Electrically rated gloves should be available for grounded batteries between 50 V and 100 V, based on a shock hazard analysis, unless otherwise mandated by local regulations. For grounded batteries over 100 V and for locations where exsed )tentials over 100 V are within reach of rsiinJ in’uIted gloves with appropriate voltage ratings shall be worn. Note that contact with 1troIvte can negatively impact the insulating capability of the gloves.
4.2.2 Ground fault hazard
Ground fault detection may be required on some dc systems dending on the ty of grounding utilized. Table 1 identifies several of the most common grounding methods.IEEE 484-2019 pdf free download.
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