Ge Transformer Connections Manual Transmission

Comprehensive Protection & Management for Transformers The Multilin™ 845 Transformer Protection System is a member of the Multilin 8 Series protective relay platform and has been designed for the protection, control and management of 2- and 3-winding power and distribution transformers in both utility and industrial applications. The Multilin 845 provides advanced functionality for a wide range of transformer applications delivering high-speed protection, customizable programmable logic, advanced transformer monitoring and diagnostics, and support for the latest communications protocols for easy integration into new or existing power systems. The Multilin 845 delivers comprehensive transformer health monitoring, diagnostics, and reporting with integrated connectivity to composite and multiple gas transformer DGA solutions such as, GE’s Kelman Transformer Monitoring devices, delivering actionable analytics for asset optimization and transformer life extension. A large, full color Graphic Control Panel (GCP) ensures clear representation of critical status and measurements.

• Ge Transformer Connections Handbook

The 8 Series offers two options for front panels:. 10 Programmable Push buttons with 12 programmable LEDs. 3 Programmable Push buttons and 12 programmable LEDs Switchgear Control and Configurable SLD The Multilin 8 Series provides a configurable dynamic SLD up to six (6) pages for comprehensive switchgear control of up to 3 breakers and 9 disconnect switches; including interlocks. Up to 15 digital and metering status elements can be configured per SLD page. Platform Overview The Multilin 8 Series platform delivers the highest level of quality, reliability and performance with. Multilin 845 Overview The 845 has been designed for the protection, control and management of 2- and 3-winding power and distribution transformers in both utility and industrial applications. The 845 delivers comprehensive transformer health monitoring, diagnostics, and reporting with integrated connectivity to single and multi-gas transformer DGA solutions such as, GE’s Kelman Transformer Monitoring devices, delivering actionable analytics for asset optimization and life extension.

Applications:. Primary and back-up protection and management of small, medium and larger power and distribution transformers, autotransformers and reactors.

Designed for Utility (Transmission & Distribution) or Industrial applications. Integrated transformer protection, monitoring diagnostics and transformer health visualization Multilin 845 feeder protection relay functional block diagram. The settings for the dual-slope, dual-breakpoint characteristic provides higher flexibility for shaping up the characteristic and achieving better sensitivity and security. Percent Differential Protection The 845 provides enhanced security by including both restrained and unrestrained (instantaneous) differential protection.

The percent differential element is based on a configurable dual-breakpoint/dual-slope differential restraint characteristic with inrush and overexcitation inhibits based on 2nd & 5th harmonics. The restraint current is calculated as a maximum of the internally compensated currents for better through-fault stability under CT saturation conditions. The percent characteristic allows the element to account for both DC and AC saturation of the current transformers. The “cubic spline” curve characteristics enables the relay to perform accurately for restraint current in range between the two slope breakpoints. Integrated Arc Flash Protection The Multilin 8 Series supports an integrated arc flash module providing constant monitoring of an arc flash condition within the switchgear, motor control control centers, or panelboards.

With a 2ms protection pass, the 8 Series is able to detect light and overcurrent using 4 arc sensors connected to the 8 Series relay. In situations where an arc flash/fault does occur, the relay is able to quickly identify the fault and issue a trip command to the associated breaker thereby reducing the total incident energy and minimizing resulting equipment damage.

Self-monitoring and diagnostics of the sensors ensures the health of the sensors as well as the full length fiber cables. LEDs on the front panel display of the 845 can be configured to indicate the health of the sensors and its connections to the relay. Transformer Learned Data Record Visualization Data Logging & Learned Data The 845 captures key electrical and DGA data values during transformer energization to trend and analyze transformer performance.

Data is summarized and presented to operators through a pre-formatted Health Report to clear indication of changes to measured parameters. Up to 365 records are supported within the 845 relay. Up to 365 latest records are supported in the 845 relay. The data, when input cumulatively to the transformer model screens helps in visualizing trends and correlating key transformer electrical and DGA parameters. Trip and Close Circuit Monitoring The 845 relay provides Trip and Close Circui Monitoring elements Breaker Arcing Current This element calculates an estimate of the per-phase wear on the breaker contacts by measuring and integrating the current squared passing through the breaker contacts as an arc. When the threshold is exceeded in any phase, the relay can set an output operand and set an alarm. Breaker Health The 845 relay provides breaker health information by monitoring and analyzing the operation count, arcing energy of breaking current, arcing time, tripping time, closing time and spring charging time if applicable.

Integrated Electrical and DGA for Comprehensive Transformer Monitoring & Diagnostics The Multilin 845 offers advanced transformer health monitoring and diagnostics through advanced notification of potential issues before they become critical. The Multilin 845 features detailed learned data, summarized pre/post-fault records, and integration with GE’s DGA devices to collect, trend, and analyze a transformer’s fault gasses.

This enables operators to minimize costly unplanned outages and equipment failures. Communications The 845 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures.

Direct support for copper/fiber optic Ethernet provides high-bandwidth communications, allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The 845 also supports two independent IP addresses, providing high flexibility for the most challenging of communication networks. Two independent network ports enables the 845 to connect with the primary protection network and the secondary monitoring network to deliver integrated asset monitoring and diagnostics by combining protection and DGA data. Cyber Security The 869 cyber security enables the device to deliver full cyber security features that help operators to comply with NERC CIP guidelines and regulations. AAA Server Support (Radius/LDAP) Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.

Ge Transformer Connections Handbook

Role Based Access Control (RBAC) Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication. Event Recorder (Syslog for SEM) Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This will enable integration with established SEM (Security Event Management) systems. Software & Configuration The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the Multilin 845.

EnerVista provides all the tools to monitor the status of the protected asset, maintain the device and integrate the information measured by the Multilin 8 Series, into SCADA or DCS process control systems. The ability to easily view sequence of events is an integral part of the setup software, as postmortem event analysis is critical to proper system management. EnerVista Launchpad The setup tools within Launchpad allow for the configuration of devices in real-time, by communicating via serial, Ethernet or modem connections, or offline by creating device setting files to be sent to devices at a later time. 8 Series Setup Software 8 Series Setup Software is single setup and configuration tool across the platform and can reduce device setup and configuration time. Simplified Setup & On-Going Maintenance.