{"id":2342,"date":"2025-02-11T21:04:27","date_gmt":"2025-02-11T21:04:27","guid":{"rendered":"https:\/\/www.basler.com\/product\/be1-81o-u-digital-frequency-relay\/"},"modified":"2026-03-02T14:10:41","modified_gmt":"2026-03-02T20:10:41","slug":"be1-81o-u-digital-frequency-relay","status":"publish","type":"product","link":"https:\/\/baslerservices.com\/bg\/product\/be1-81o-u-digital-frequency-relay\/","title":{"rendered":"BE1-81O\/U, Digital Frequency Relay"},"content":{"rendered":"<section  data-block-id=\"hammer_block_e0bf9d5cf143ce99d2f151aaacf1c746\" data-block=\"hero-10\" class=\"block block-hero-10 hero-10\" id=\"overview\">    <div class=\"wrapper\">\n        <div class=\"left_content\">\n                            <div class=\"headline-wrapper\">\n                                            <strong class=\"overline\">Protective Relay Systems<\/strong>\n                    \n                    <h1 id=\"hammer_component_69deafc15d6ac\" data-component=\"headline\" class=\"component component-headline headline medium style-default\">BE1-81O\/U, Digital Frequency Relay<\/h1>\n                <\/div>\n            \n            \n                                                <div class=\"buttons\">\n                                                                                                    \n                                            <\/div>\n                                    <\/div>\n\n                    <div class=\"right_content\">\n                <div class=\"slider slider-main\">\n                    <div class=\"swiper-wrapper\">\n                                                    <div class=\"swiper-slide\">\n                                                                    <figure id=\"hammer_component_69deafc15dd26\" data-component=\"image\" class=\"component component-image image\">\n        <picture class=\"picture\">\n            <img decoding=\"async\" width=\"1084\" height=\"600\" src=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183.jpg\" class=\"img\" alt=\"BE1-81O\/U Digital Frequency Relay, M1 case\" loading=\"lazy\" title=\"\" srcset=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183.jpg 1084w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-768x425.jpg 768w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-1024x567.jpg 1024w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-150x83.jpg 150w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-414x229.jpg 414w\" sizes=\"auto, (max-width: 1084px) 100vw, 1084px\">        <\/picture>\n\n            <\/figure>\n                                                            <\/div>\n                                                    <div class=\"swiper-slide\">\n                                                                    <figure id=\"hammer_component_69deafc15e159\" data-component=\"image\" class=\"component 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<div class=\"slider slider-vertical\">\n                        <div class=\"swiper-wrapper\">\n                                                            <div class=\"swiper-slide\">\n                                                                            <figure id=\"hammer_component_69deafc15e400\" data-component=\"image\" class=\"component component-image image\">\n        <picture class=\"picture\">\n            <img decoding=\"async\" width=\"1084\" height=\"600\" src=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183.jpg\" class=\"img\" alt=\"BE1-81O\/U Digital Frequency Relay, M1 case\" loading=\"lazy\" title=\"\" srcset=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183.jpg 1084w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-768x425.jpg 768w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-1024x567.jpg 1024w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-150x83.jpg 150w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/183-414x229.jpg 414w\" sizes=\"auto, (max-width: 1084px) 100vw, 1084px\">        <\/picture>\n\n            <\/figure>\n                                                                    <\/div>\n                                                            <div class=\"swiper-slide\">\n                                                                            <figure id=\"hammer_component_69deafc15e676\" data-component=\"image\" class=\"component component-image image\">\n        <picture class=\"picture\">\n            <img decoding=\"async\" width=\"1084\" height=\"600\" src=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184.jpg\" class=\"img\" alt=\"BE1-81O\/U Digital Frequency Relay, S1 case\" loading=\"lazy\" title=\"\" srcset=\"https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184.jpg 1084w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184-768x425.jpg 768w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184-1024x567.jpg 1024w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184-150x83.jpg 150w, https:\/\/baslerservices.com\/wp-content\/uploads\/2025\/02\/184-414x229.jpg 414w\" sizes=\"auto, (max-width: 1084px) 100vw, 1084px\">        <\/picture>\n\n            <\/figure>\n                                                                    <\/div>\n                                                    <\/div>\n                    <\/div>\n                            <\/div>\n            <\/div>\n    <\/section>\n\n<section  data-block-id=\"hammer_block_dea30c2c24e49ce111104e77d2811d6a\" data-block=\"product-features-benefits\" class=\"block block-product-features-benefits product-features-benefits spacing-top-default spacing-bottom-default\" id=\"features-benefits\">\t<div class=\"wrapper\">\n\t\t<div class=\"headline-wrapper\">\n            <h2 id=\"hammer_component_69deafc165f32\" data-component=\"headline\" class=\"component component-headline headline style-default\">&mdash; &#1061;&#1072;&#1088;&#1072;&#1082;&#1090;&#1077;&#1088;&#1080;&#1089;&#1090;&#1080;&#1082;&#1080; &#1080; &#1087;&#1088;&#1077;&#1076;&#1080;&#1084;&#1089;&#1090;&#1074;&#1072; &#1085;&#1072; &#1087;&#1088;&#1086;&#1076;&#1091;&#1082;&#1090;&#1072;<\/h2>\n\t\t<\/div>\n\n        \t\t\t<ul class=\"items\">\n                \t\t\t\t\t<li class=\"item\">\n                        <div id=\"hammer_component_69deafc165f9a\" data-component=\"rich-text\" class=\"component component-rich-text rich-text\"><ul>\n<li>Accurate, repeatable, and reliable operation.<\/li>\n<li>Incrementally-staged load shedding possible with up to four independent frequency setpoints.<\/li>\n<li>Flexible protection options with selectable overfrequency or underfrequency sensing for each setpoint.<\/li>\n<li>Clear settings indication from individually adjustable time delays and LED indicators for each frequency set point.<\/li>\n<li>Minimized PT costs as a result of low sensing burden.<\/li>\n<li>Reduced battery load with low burden power supply.<\/li>\n<li>LED targets provide clear annunciation of status.<\/li>\n<li>Easily perform in-case system and device tests using test paddles.<\/li>\n<\/ul>\n<\/div>\n\t\t\t\t\t<\/li>\n                \t\t\t<\/ul>\n        \n\t<\/div>\n    <\/section>\n\n<section  data-block-id=\"hammer_block_3b8cd8495c54af122b71ae37d0959dce\" data-block=\"product-documentation-listing\" class=\"block block-product-documentation-listing product-documentation-listing spacing-top-\u043c\u0430\u043b\u044a\u043a spacing-bottom-normal\" id=\"documentation\"><div id=\"listing-app\" class=\"component component-listing listing wrapper ember-entrance listing-product-documentation-listing\" data-component=\"listing\" 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