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Defines safety symbols and provides general cautions and warnings for safe operation, installation, and maintenance of the device.
Overview of the B90 Low Impedance Bus Differential System, its architecture, and protection/supervisory functions.
Details password security, EnerVista security, and CyberSentry security features for device access control.
Lists detailed technical specifications for the B90 relay's protection elements, inputs, outputs, and communications.
Details operating times and parameters for various protection elements like Bus Differential, CT Trouble, and Time Overcurrent.
Details CyberSentry security features, including software options and user roles.
Procedure for unpacking and inspecting the relay package contents and checking for physical damage.
Outlines wiring procedures, including typical diagrams and dielectric strength requirements.
Provides instructions for installing the EnerVista UR Setup software, including system requirements.
Guides on adding devices to the EnerVista software, covering serial, Ethernet, modem, and automatic discovery methods.
Explains methods for connecting to the B90 relay via RS232 port, RS485 port, Ethernet port, or LAN.
Procedure for setting up CyberSentry security and changing the default Administrator password.
Overview of the EnerVista UR Setup software, its features, and how to use it for configuration, monitoring, and troubleshooting.
Explains how to secure parts or all of a FlexLogic equation using the settings template feature for locking.
Provides instructions on how to change numerical and alphanumeric settings via the front panel keypad.
Describes how to view phasor diagrams and metered data on the front panel, including status indicators and metering pages.
Details the integration of EnerVista Viewpoint Engineer software for creating and modifying FlexLogic diagrams.
Explains the process of creating FlexLogic with block diagrams, including adding existing equations and creating new logic.
Outlines the main settings menu structure, including Product Setup, System Setup, FlexLogic, Grouped Elements, Control Elements, and Inputs/Outputs.
Covers product-specific settings, including B90 function, security features, display properties, and graphical front panel configuration.
Configures the B90 master switch to enable specific relay elements, affecting availability of protection and logic functions.
Details password security, EnerVista security management, and CyberSentry advanced security features.
Configures communication protocols including Serial Ports, Network, Modbus, DNP, IEC 60870-5-104, IEC 61850, and Web Server.
Configures AC inputs (current and voltage), power system parameters, FlexCurves, and bus configurations.
Configures bus differential settings for up to six zones, including CT orientation and status for each bus zone.
Provides tools for creating and modifying FlexLogic logic, including operands, gates, timers, and latches.
Configures settings for bus differential protection, including pickup, slopes, breakpoints, and saturation detection.
Configures settings for the Breaker Failure protection element, including current supervision, timers, and trip logic.
Configures digital inputs, virtual inputs, contact outputs, virtual outputs, resetting, direct inputs, and direct outputs.
Provides facilities for testing contact inputs/outputs, communication functions, and phasor measurement unit.
Describes the relay's self-test diagnostic checks, including major and minor self-test error messages.
Details how to find CT linear operation limits to set biased differential characteristic breakpoints (LOW SLOPE, HIGH SLOPE).
Explains how to set the higher slope and threshold for unbiased differential operation, analyzing external faults.
Provides calculated settings for bus differential protection based on previous analysis of fault currents and CT characteristics.
Explains the dynamic bus replica mechanism, CT ratio matching, and provides an example of its application.
Describes the biased differential operating characteristic, including pickup, slopes, breakpoints, and differential/restraining currents.
Details the dual-slope, dual-breakpoint operating characteristic of the B90 bus differential element.
Explains the CT saturation detection mechanism, which uses the differential characteristic for proper operation.
Outlines general maintenance practices for the B90 relay, including in-service, out-of-service, and unscheduled maintenance.
Describes procedures for backing up in-service settings to a file and restoring them to the original or a replacement relay.
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