[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-641975-105":59,"doc-detail-641975-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","sel-751a-feeder-protection-relay-instruction-manual","SEL-751A Feeder Protection Relay - Instruction Manual","","Instruction manual for the SEL-751A Feeder Protection Relay, providing critical safety cautions and warnings for installation and servicing. It emphasizes electrostatic discharge (ESD) precautions, grounding requirements, and safe handling procedures to prevent hidden permanent damage. The manual also warns about explosion risks from incorrect battery replacement, laser exposure hazards (Class 1), and electrical shock dangers from hazardous voltages and terminals. It instructs qualified personnel only, stresses changing default passwords, and requires de-energizing before option card installation.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sel-751a-feeder-protection-relay-instruction-manual/641975/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sel-751a-feeder-protection-relay-instruction-manual/641975.png","ImageObject",300,407,{"name":92,"@type":93},"McGucket","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-13","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What ESD precautions does the manual require when working on the relay?","Question",{"text":112,"@type":113},"Proper grounding for both work surfaces and personnel is required when the relay front panel is removed. Follow correct ESD procedures to avoid undetectable permanent damage.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should the battery be replaced to avoid explosion risk?",{"text":117,"@type":113},"Replace the battery only with Ray-O-Vac® no. BR2335 or an equivalent recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.",{"name":119,"@type":110,"acceptedAnswer":120},"What safety steps are required before opening or servicing the device?",{"text":121,"@type":113},"Disconnect or de-energize all external connections before opening the device. Have only qualified personnel service the equipment, and change default passwords after installation to prevent unauthorized access.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},641975,1792736697,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":34,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},1236954412713,"https://us-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","SEL-751A  \nFeeder Protection Relay  \nInstruction Manual  \n20130329  \n*PM751A-01-NB*  \n ! CAUTION  \nThe relay contains devices sensitive to Electrostatic Discharge (ESD) . When working on the relay with the front panel removed, work surfaces and personnel must be properly grounded or equipment damage may result.  \n ! CAUTION  \nEquipment components are sensitive to electrostatic discharge (ESD) . Undetectable permanent damage can result if you do not use proper ESD procedures. Ground yourself, your work surface, and this equipment before removing any cover from this equipment. If your facility is not equipped to work with these components, contact SEL about returning this device and related SEL equipment for service.  \n! CAUTION  \nThere is danger of explosion if the battery is incorrectly replaced.  \nReplace only with Ray-O-Vac® no. BR2335 or equivalent recommended by manufacturer. Dispose of used batteries according to the manufacturer’s instructions.  \n ! CAUTION  \nClass 1 LASER Product. This product uses visible or invisible LASERs based on model option. Looking into optical connections, fiber ends, or bulkhead connections can result in hazardous radiation exposure.  \n ! CAUTION  \nUse of controls or adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.  \n ! WARNING  \nHave only qualified personnel service this equipment. If you are not qualified to service this equipment, you can injure yourself or others, or cause equipment damage.  \n ! WARNING  \nUse of this equipment in a manner other than specified in this manual can impair operator safety safeguards provided by this equipment.  \n ! WARNING  \nTo install an option card, the relay must be de-energized and then reenergized. When reenergized, the relay will reboot. Therefore, deenergize the protected equipment before installing the option card to prevent damage to the equipment.  \n ! WARNING  \nThis device is shipped with default passwords. Default passwords should be changed to private passwords at installation. Failure to change each default password to a private password may allow unauthorized access. SEL shall not be responsible for any damage resulting from unauthorized access.  \n ! DANGER  \nDisconnect or de-energize all external connections before opening this device. Contact with hazardous voltages and currents inside this device can cause electrical shock resulting in injury or death.  \n ! DANGER  \nContact with instrument terminals can cause electrical shock that can result in injury or death.  \n ! ATTENTION  \nLe relais contient des pièces sensibles aux décharges électrostatiques. Quand on travaille sur le relais avec les panneaux avant ou du dessusenlevés, toutes les surfaces et le personnel doivent être mis à la terre convenablement pour éviter les dommages à l’équipement.  \n ! ATTENTION  \nLes composants de cet équipement sont sensibles aux décharges électrostatiques (DES) . Des dommages permanents non-décelables peuventrésulter de l’absence de précautions contre les DES. Raccordez-vous correctement à la terre, ainsi que la surface de travail et l’appareil avant d’en retirer un panneau. Si vous n’êtes pas équipés pour travailler avec ce type de composants, contacter SEL afin de retourner l’appareil pour un service en usine.  \n ! ATTENTION  \nIl y a un danger d’explosion si la pile électrique n’est pas correctementremplacée. Utiliser exclusivement Ray-O-Vac® No. BR2335 ou un équivalentrecommandé par le fabricant. Se débarrasser des piles usagées suivant les instructions du fabricant.  \n ! ATTENTION  \nProduit LASER de Classe 1. Ce produit utilise des LASERS visibles ou invisibles dépendant des options du modèle. Regarder vers les connecteursoptiques, les extrémités des fibres oules connecteurs de cloison peutentraîner une exposition à des rayonnements dangereux.  \n ! ATTENTION  \nL’utilisation de commandes ou de réglages, ou l’application de tests defonctionnement différents de ceux décrits ci-après peuvent ","cbCaihUZTGJXKGHT","https://ap.wps.com/l/cbCaihUZTGJXKGHT","pdf",9221895,660,"English","# Safety Warnings\n## ESD and grounding precautions\n## Battery replacement and laser hazards\n## Qualified service and access security","[{\"question\":\"What ESD precautions does the manual require when working on the relay?\",\"answer\":\"Proper grounding for both work surfaces and personnel is required when the relay front panel is removed. Follow correct ESD procedures to avoid undetectable permanent damage.\"},{\"question\":\"How should the battery be replaced to avoid explosion risk?\",\"answer\":\"Replace the battery only with Ray-O-Vac® no. BR2335 or an equivalent recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.\"},{\"question\":\"What safety steps are required before opening or servicing the device?\",\"answer\":\"Disconnect or de-energize all external connections before opening the device. Have only qualified personnel service the equipment, and change default passwords after installation to prevent unauthorized access.\"}]","SEL-751A Feeder Protection Relay - Instruction Manual | PDF",1792720029,1663]