{"id":363,"date":"2020-08-19T11:50:37","date_gmt":"2020-08-19T11:50:37","guid":{"rendered":"http:\/\/www.dsgenterprisesltd.com\/product\/import-placeholder-for-25094\/"},"modified":"2020-09-12T13:45:37","modified_gmt":"2020-09-12T13:45:37","slug":"siemens-siprotec-5-7ut87-transformer-differential-protection-relays","status":"publish","type":"product","link":"https:\/\/dsgenterprisesltd.com\/product\/siemens-siprotec-5-7ut87-transformer-differential-protection-relays\/","title":{"rendered":"Siemens Siprotec 5 7UT87 Transformer Differential Protection Relays"},"content":{"rendered":"<h1><span data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Siemens Siprotec 5 7UT87 Transformer Differential Protection Relays&quot;}\" data-sheets-userformat=\"{&quot;2&quot;:17213,&quot;3&quot;:{&quot;1&quot;:0},&quot;5&quot;:{&quot;1&quot;:[{&quot;1&quot;:2,&quot;2&quot;:0,&quot;5&quot;:[null,2,0]},{&quot;1&quot;:0,&quot;2&quot;:0,&quot;3&quot;:3},{&quot;1&quot;:1,&quot;2&quot;:0,&quot;4&quot;:1}]},&quot;6&quot;:{&quot;1&quot;:[{&quot;1&quot;:2,&quot;2&quot;:0,&quot;5&quot;:[null,2,0]},{&quot;1&quot;:0,&quot;2&quot;:0,&quot;3&quot;:3},{&quot;1&quot;:1,&quot;2&quot;:0,&quot;4&quot;:1}]},&quot;7&quot;:{&quot;1&quot;:[{&quot;1&quot;:2,&quot;2&quot;:0,&quot;5&quot;:[null,2,0]},{&quot;1&quot;:0,&quot;2&quot;:0,&quot;3&quot;:3},{&quot;1&quot;:1,&quot;2&quot;:0,&quot;4&quot;:1}]},&quot;8&quot;:{&quot;1&quot;:[{&quot;1&quot;:2,&quot;2&quot;:0,&quot;5&quot;:[null,2,0]},{&quot;1&quot;:0,&quot;2&quot;:0,&quot;3&quot;:3},{&quot;1&quot;:1,&quot;2&quot;:0,&quot;4&quot;:1}]},&quot;11&quot;:4,&quot;12&quot;:0,&quot;17&quot;:1}\">Siemens Siprotec 5 7UT87 Transformer Differential Protection Relays<\/span><\/h1>\n<p>The SIPROTEC 7UT87 transformer differential protection has been designed specifically for the protection of multi-winding transformers (up to 5 sides). Furthermore, it is to be used where numerous measuring points (up to 9 3-phase current measuring points) are required. Another application is simultaneous protection of two parallel transformers (additional fast backup protection). The SIPROTEC 7UT87 is the main protection for the trans- former and contains many other protection and monitoring functions. The additional protection functions can also be used as backup protection for subsequent protected objects (such as cables or lines). With its modular structure, flexibility and the powerful DIGSI 5 engineering tool, SIPROTEC 7UT87 offers future-oriented system solutions with high investment security and low operating costs.<\/p>\n<h2><strong>7UT87 Transformer Differential Protection Relay Features<\/strong><\/h2>\n<p><strong>Main function:<\/strong><\/p>\n<ul>\n<li>Up to 3 differential protection functions with additional stabilization (in different transformer function groups); up to 5 ground fault differential protection functions.<\/li>\n<li>For auto transformer applications, two differential protection functions can be processed in an Auto transformer function group.<\/li>\n<li>Interoperability of SIPROTEC 5 and SIPROTEC 4 line protection devices<\/li>\n<\/ul>\n<p><strong>Usable measuring points:<\/strong><\/p>\n<ul>\n<li>9 x 3-phase current measuring points,<\/li>\n<li>5 x 1- phase current measuring points,<\/li>\n<li>5 x 3-phase voltage measuring points<\/li>\n<\/ul>\n<p><strong>Inputs and outputs:<\/strong><\/p>\n<p>2 predefined standard variants with<\/p>\n<ul>\n<li>20 current transformers,<\/li>\n<li>4 voltage transformers,<\/li>\n<li>15 to 27 binary inputs,<\/li>\n<li>22 to 38 binary outputs<\/li>\n<\/ul>\n<p><strong>Hardware flexibility:<\/strong><\/p>\n<ul>\n<li>Flexibly adjustable and expandable I\/O quantity structure within the scope of the SIPROTEC 5 modular system.<\/li>\n<\/ul>\n<p><strong>Width of housing:<\/strong><\/p>\n<ul>\n<li>2\/3 x 19 inches to 2\/1 x 19 inches<\/li>\n<\/ul>\n<p><strong>As standard:<\/strong><\/p>\n<ul>\n<li>Conformal coating<\/li>\n<\/ul>\n<h3>Functions<\/h3>\n<p>DIGSI 5 permits all functions to be configured and combined as required. In SIPROTEC 7UT87, two transformer function groups can be used.<\/p>\n<ul>\n<li>Transformer differential protection for multiwinding transformers with versatile, additional protection functions (multi-winding transformers are typical in power converter applications (such as HVDC))<\/li>\n<li>Transformer differential protection for phase-angle regulating transformers of the single core and two core types, and special transformers<\/li>\n<li>Transformer protection applications with up to seven 3-phase current measuring points<\/li>\n<li>Simultaneous differential protection for two parallel transformers (such as two 2-winding transformers)<\/li>\n<li>Universal usability of the permissible measuring points<\/li>\n<li>Applicable from average up to extra-high voltage<\/li>\n<li>Protection of standard power transformers, auto transformers and motors<\/li>\n<li>Typical properties of a transformer differential protection such as flexible adaptation to the transformer vector group, control of inrush and overexcitation processes, safe behavior in case of current-transformer saturation with different degrees of saturation<\/li>\n<li>Arc protection<\/li>\n<li>Voltage controller function ANSI 90V for two-winding transformers, three-winding transformers and grid coupling transformers with parallel control (master\/follower, circuit reactive current minimization)<\/li>\n<li>Adaptive adaptation of the operate curve to the transformer tap position<\/li>\n<li>Increased sensitivity with near-neutral-point ground faults through a separate restricted ground-fault protection<\/li>\n<li>Additional current and voltage inputs can be supplements for standard protection functions, such as overcurrent, voltage frequency and others<\/li>\n<li>Graphical logic editor to create powerful automation functions in the device<\/li>\n<li>Up to 4 pluggable communication modules, usable for different and redundant protocols (IEC 61850, IEC 60870-5-103, IEC 60870-5-104, DNP3 serial and TCP, Modbus TCP, PROFINET IO)<\/li>\n<li>Redundancy protocols PRP and HSR<\/li>\n<li>Cyber security to NERC CIP and BDWE Whitepaper requirements<\/li>\n<li>Secure serial protection data communication, even over great distances and all available physical media (fiber-optic cable, 2-wire connections and communication Networks)<\/li>\n<li>Capturing operational measured variables and protection function measured values to evaluate the plant state, to support commissioning, and to analyze faults<\/li>\n<li>Phasor Measurment Unit (PMU)\u00a0for synchrophasor-measured values and IEEE C37.118 protocol<\/li>\n<li>Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)<\/li>\n<li>Auxiliary functions for easy tests and commissioning<\/li>\n<li>Flexibly adjustable I\/O quantity structure within the scope of the SIPROTEC 5 modular system<\/li>\n<\/ul>\n<h3>Applications<\/h3>\n<p>The SIPROTEC 7UT87 is intended for special applications (up to 5 sides and 7 measuring points), therefore, you must create your own application template depending on the application and store it in the device. To make work easier, you can use an available template and modify it.<\/p>\n<p><strong>Example:<\/strong><\/p>\n<p>Auto transformer with stabilizing winding in breaker-and-a-half layout<\/p>\n<ul>\n<li>Differential protection for the complete transformer (auto transformer winding + stabilizing winding)<\/li>\n<li>Nodal point protection for the auto winding for recording ground faults (3-phase recording of the neutral-point current)<\/li>\n<li>Overload protection, backup protection for the downstream power system<\/li>\n<li>Circuit-breaker failure protection<\/li>\n<li>Frequency and voltage protection on the upper-voltage side.<\/li>\n<\/ul>\n<p>Line protection<\/p>\n<ul>\n<li>Line differential protection<\/li>\n<li>Serial protection communication with SIPROTEC 5 and SIPROTEC 4 devices over different distances and physical media, such as optical fiber, two-wire connections, and communication networks<\/li>\n<\/ul>\n<p><a href=\"https:\/\/dsgenterprisesltd.com\/product-category\/siemens-reyrolle-numerical-relays-supplier\/siprotec-5-siemens-numerical-relays-2\/\">SIPROTEC 5<\/a> is part of the new generation of incomparable modular, flexible, and intelligent digital field devices. With modularly designed hardware and software and its high-performance DIGSI 5 engineering tool, the SIPROTEC 5 product family of field devices are perfect for protection, control, monitoring, and measuring applications in electrical energy systems. SIPROTEC 5 offers a wide product range with modular elements for every application and requirement.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Siemens Siprotec 5 7UT87 Transformer Differential Protection Relays The SIPROTEC 7UT87 transformer differential protection has been designed specifically for the protection of multi-winding transformers (up to 5 sides). Furthermore, it is to be used where numerous measuring points (up to 9 3-phase current measuring points) are required. Another application is simultaneous protection of two parallel [&hellip;]<\/p>\n","protected":false},"featured_media":341,"comment_status":"open","ping_status":"closed","template":"","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"0","ocean_custom_header_template":"0","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0"},"product_cat":[99,103],"product_tag":[],"class_list":{"0":"post-363","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-siemens-reyrolle-numerical-relays-supplier","7":"product_cat-siprotec-5-siemens-numerical-relays-2","9":"entry","10":"has-media","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple","16":"has-product-nav","17":"col","18":"span_1_of_3","19":"owp-content-center","20":"owp-thumbs-layout-horizontal","21":"owp-btn-normal","22":"owp-tabs-layout-horizontal","23":"has-no-thumbnails"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>7UT87 Transformer Differential Protection Relay, Siemens Siprotec 5 Relay<\/title>\n<meta name=\"description\" content=\"We are the Distributor, Dealer, Trader, Exporter and Supplier of Siemens 7UT87 Transformer Differential Protection Relay, Siprotec 5 Relay.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dsgenterprisesltd.com\/product\/siemens-siprotec-5-7ut87-transformer-differential-protection-relays\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"7UT87 Transformer Differential Protection Relay, Siemens Siprotec 5 Relay\" \/>\n<meta property=\"og:description\" content=\"We are the Distributor, Dealer, Trader, Exporter and Supplier of Siemens 7UT87 Transformer Differential Protection Relay, Siprotec 5 Relay.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dsgenterprisesltd.com\/product\/siemens-siprotec-5-7ut87-transformer-differential-protection-relays\/\" \/>\n<meta property=\"og:site_name\" content=\"Digital &amp; 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