Siemens Siprotec 4 SIPROTEC 7VK61 Protection Relay<\/h1>\n

The SIPROTEC 4 breaker management relay 7VK61 is a highly flexible autorecloser, synchro-check, and circuit breaker failure protection unit. This unit is used for the single and three pole auto-reclosure of a circuit-breaker after this circuit breaker has tripped due to a fault.The synchro-check function ensures that the two circuits being reconnected by closing the circuit-breaker are within a defined safe operating state before the CLOSE command is issued.The 7VK61 is also applicable as circuit breaker failure protection. A breaker failure occurs when the circuit-breaker fails to correctly open and clear the fault after single or three-pole trip commands have been issued by the protection.It is then necessary to trip the relevant busbar zone (section) to ensure fault clearance. Together with the above-mentioned protection functions, the following additional functions of the 7VK61 can be applied: end-fault protection, pole-discrepancy protection, overvoltage protection and under voltage protection. As a member of the numerical SIPROTEC 4 relay family, it also provides control and monitoring functions and therefore supports the user with regard to a cost-effective power system management.<\/p>\n

PROTECTION FUNCTIONS<\/strong><\/p>\n

\n
• Single and\/or three-pole auto-reclosure<\/li>\n
• Synchro-check with live\/dead line\/bus measurement<\/li>\n
• Closing under asynchronous conditions (consideration of CB operating time)<\/li>\n
• Circuit-breaker failure protection with two stages (single and three-pole with\/without current)<\/li>\n
• End-fault protection<\/li>\n
• Pole-discrepancy protection<\/li>\n
• Overvoltage\/undervoltage protection<\/li>\n<\/ul>\n

  CONTROL FUNCTION<\/strong><\/p>\n

  \n
  • Commands f. ctrl. of CB and isolators<\/li>\n<\/ul>\n

    MONITORING FUNCTIONS<\/strong><\/p>\n

    \n
    • Operational measured values<\/li>\n
    • Self-supervision of the relay<\/li>\n
    • Event buffer and fault protocols<\/li>\n
    • Oscillographic fault recording<\/li>\n
    • Monitoring of CB auxiliary contacts<\/li>\n
    • Switching statistics<\/li>\n<\/ul>\n

      FEATURES<\/p>\n

      \n
      • All functions can be used separately<\/li>\n
      • Initiation\/start by phase-segregated or 3-pole trip commands<\/li>\n
      • Auto-reclosure for max. 8 reclose cycles<\/li>\n
      • Evolving\/sequential trip recognition<\/li>\n
      • Auto-reclosure with ADT, DLC, RDT<\/li>\n
      • Synchro-check with ?V, ?? , ?f measurement<\/li>\n
      • Breaker failure protection with highly secure 2-out-of-4 current check detectors<\/li>\n
      • Breaker failure protection with short reset time and negligible overshoot time<\/li>\n<\/ul>\n

        COMMUNICATION INTERFACES<\/p>\n

        \n
        • Front interface for connecting a PC<\/li>\n
        • System interface for connecting to a control system via various protocols
          \n? IEC 61850 Ethernet
          \n? IEC 60870-5-103 protocol
          \n? PROFIBUS-FMS\/-DP
          \n? DNP 3.0<\/li>\n
        • Rear-side service\/modem interface<\/li>\n
        • Time synchronization via
          \n? IRIG-B or DCF77 or system interface<\/li>\n<\/ul>\n

          SIPROTEC 4<\/a> leads the way in integrating protection, control, measurement, and automation functions in one device. The homogenous system platform, the unique DIGSI 4 engineering program, and extensive experience of more than a million successfully operating devices in the field worldwide ? thanks to these unique advantages, SIPROTEC 4 enjoys top recognition among users worldwide. SIPROTEC 4 is the industry standard for digital protection technology today in all fields of application.<\/p>\n

           <\/p>\n

           <\/p>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          Siemens Siprotec 4 SIPROTEC 7VK61 Protection Relay The SIPROTEC 4 breaker management relay 7VK61 is a highly flexible autorecloser, synchro-check, and circuit breaker failure protection unit. This unit is used for the single and three pole auto-reclosure of a circuit-breaker after this circuit breaker has tripped due to a fault.The synchro-check function ensures that the […]<\/p>\n","protected":false},"featured_media":288,"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":[99,102],"product_tag":[],"class_list":{"0":"post-305","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-siemens-reyrolle-numerical-relays-supplier","7":"product_cat-siprotec-4-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":"\n