ABB ret650 1MRK008516-BA Transformer protection
ABB ret650 1MRK008516-BA Transformer protection
650 series overview Protection for a wide range of applications, control of switching devices with interlocking, and monitoring can be provided in one IED. The 650 series IEDs provide both customized and configured solutions. With the customized IEDs you have the freedom to completely adapt the functionality according to your needs. The 650 series IEDs provide optimum 'off-the-shelf', ready-to-use solutions. It is configured with complete protection functionality and default parameters to meet the needs of a wide range of applications for generation, transmission and sub-transmission grids. The 650 series IEDs include:
• Customized versions providing the possibility to adapt the functionality to the application needs for protection and control in one IED.
• Configured versions solutions are completely ready to use and optimized for a wide range of applications for generation, transmission and sub-transmission grids.
• Support for user-defined names in the local language for signal and function engineering.
• Minimized rule based parameter settings based on default values and ABB's global base value concept. You only need to set those parameters specific to your own installed and activated application.
• GOOSE messaging for horizontal communication on bumpless redundant station bus following IEC62439–3 ed2 PRP.
• Extended HMI functionality with 15 dynamic three-color indication LEDs per page, on up to three pages, and configurable push-button shortcuts for different actions.
• Programmable LED text-based labels. • Settable 1A/5A -rated current inputs.
• Role based access control with independent passwords
and FTPS encrypted communication. Managed
authentication and accounting of all user activities.
Application RET650 provides fast and selective protection, monitoring and control for two- and three-winding transformers, autotransformers, generator-transformer units and shunt reactors. The IED is designed to operate correctly over a wide frequency range in order to accommodate power system frequency variations during disturbances and generator start-up and shut-down. Apparatus control for up to 8 apparatuses with interlocking can be included in one IED by function block engineering. A very fast differential protection function with built-in transformer ratio matching and phase shift compensation makes this IED the ideal solution even for the most demanding applications. The differential protection function is provided with 2nd harmonic and wave-block restraint features to avoid tripping for magnetizing inrush current, and 5th harmonic restraint to avoid tripping during overexcitation conditions. The differential function offers a high sensitivity for low level internal faults. The unique and innovative sensitive differential protection feature of the RET650 provides the best possible coverage for winding internal turn-to-turn faults, based on the theory of symmetrical components . A low impedance restricted ground-fault protection function is available as a complimentary sensitive and fast main protection against winding ground faults. This function includes a directional zero-sequence current criterion for additional security. Tripping from pressure relief/Buchholz and temperature devices can be implemented through the RET650, where trip signal conditioning can be performed (pulsing, lockout, additional logics, etc). The binary inputs are thoroughly stabilized against disturbances in order to prevent incorrect operations due to for example DC system capacitive discharges or DC ground faults. Versatile phase, ground, negative and zero sequence overcurrent functions with directional capability provide further alternative backup protections. Thermal overload with two time-constants, overexcitation (volts per hertz) and over/under voltage protection functions are also available. A built-in disturbance and event recorder provides valuable data to the user about status and operation for post-fault disturbance analysis. An included breaker failure protection funct
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