Catalogs >
GE Grid Solutions >
Multilin 339

Multilin 339
16Pages

Catalog excerpts

Grid Solutions Multilin 339 Motor Protection System Protection & Control The Multilin™ 339 is a member of the Multilin 3 Series protective relay platform and has been designed for the protection, control and management of medium voltage motors in industrial applications. The Multilin 339 delivers unparalleled protection, control, diagnostics and communications in an industry leading drawout construction. Providing simplified setup configuration through the use of the Motor Settings Auto-Configurator, advanced graphical diagnostics with the Motor Health Report and support for multiple communication protocols including IEC® 61850, the 339 Motor Protection System provides comprehensive motor protection for most small and medium sized motors. • Thermal model biased with RTD and negative sequence current feedback Key Benefits • Cost-effective and flexible protection and control device for motors • Field-proven algorithms and reliable protection to avoid unwanted trips or under-protection • Ease of use and standardization with simplified motor setup and universal CT inputs • Comprehensive current-based protection including directional elements and Contactor Current Supervision • Start supervision, inhibit, load increase and mechanical jam • Underpower/undercurrent and directional power Metering & Monitoring • Comprehensive metering • Enhanced Thermal Model including RTD and current unbalance biasing • Programmable oscillography up to 32 samples per cycle and digital states • Environmental monitoring system to monitor operating conditions and plan preventative maintenance • SNTP or IRIG-B clock synchronization • Time stamped event reports, waveform capture, motor start and motor trending • Reduced wiring via remote RTD’s using the RMIO module and support for 3 internal RTDs • Motor health and switchgear diagnostics including breaker monitoring, CT/VT and close/trip coil supervision • Advanced power system and switchgear diagnostics • Relay health diagnostics • Powerful security and hierarchical password control for centralized management • Customized motor overload curve Flex curves • Detailed Motor Health Report with critical data • Switchgear diagnostics and easy troubleshooting by CT/VT supervision, trip/close circuit supervision and LED/IO Test Mode • Front USB and rear serial, Copper and Fiber Ethernet ports • Drawout design simplifies testing, commissioning and maintenance, thereby increasing process uptime • Multiple communication protocols including IEC 61850, IEC 61850 GOOSE, Modbus® TCP/ IP, Modbus RTU, DNP 3.0, IEC 60870-5-104, IEC 60870-5-103 • Flexible communications with multiple ports and protocols allowing seamless integration • Robust design exceeding industry standards, with Automotive Grade components and advanced testing procedures such as accelerated life cycle testing • Simplified migration of legacy MII Family relays to the 3 Series platform • Intuitive configuration software and user-friendly logic configuration tool EnerVistaTM Software • Simplified setup and configuration • Strong document management system • Protection and control of LV or MV motors of various sizes • Full featured monitoring and data recording • Protection of pumps, conveyors, fans, compressors, and others in process or manufacturing industries. . • Maintenance and troubleshooting tool • Applications requiring fast and secure communications • Seamless integration toolkit • Harsh environments requiring protection against corrosive chemica

Open the catalog to page 1

339 Motor Protection System The Multilin 339 relay is a member of the 3 Series family of Multilin relays. This motor protective device is used to perform protection, control, metering and supervision of asynchronous LV and MV motors in different process and manufacturing industries. Drawout & Non-Drawout Construction The basic protection functions of this relay include motor thermal model, time-delayed and instantaneous overcurrent, ground overcurrent and sensitive ground overcurrent protection. Additional control features such as logic control are available for applications that require...

Open the catalog to page 2

339 Motor Protection System Enhanced Diagnostics Preventative Maintenance The 339 allows users to track relay exposure to extreme environmental conditions by monitoring and alarming at high ambient temperatures. This data allows proactive scheduling of regular maintenance work and upgrade activities. The diagnostics data enables the user to understand degradation of electronics due to extreme conditions. Switchgear Diagnostics The current and voltage transformer monitoring feature allows users to easily locate and troubleshoot potential failures or mis-operations caused by CTs or VTs....

Open the catalog to page 3

339 Motor Protection System Unbalance (Negative Sequence) Biasing (46) RTD Biasing does not replace the Thermal Capacity Used (TCU) calculated using the motor current. It provides a second and independent measure of thermal capacity used. Based on a programmable curve, the 339 will calculate the TCU at any given temperature. This TCU is then compared to that of the thermal model, and the larger of the two will be used. Hot / Cold Safe Stall Ratio The ratio defines the steady state level of thermal capacity used (TCU) by the motor. This level corresponds to normal operating temperature of a...

Open the catalog to page 4

339 Motor Protection System the Stator, Bearing and Ambient temperatures. Each RTD input has 2 operational levels: alarm and trip. The 339 supports RTD trip voting and provides open and short RTD monitoring. CIO has been designed to be mounted close to the motor to reduce the length of the RTD cables and the associated costs. It can be mounted UP TO 250m away from the relay. Automation and Integration Logic Elements The 339 relay has sixteen Logic Elements available for the user to build simple logic using the state of any programmed contact, virtual, or remote input, or the output operand...

Open the catalog to page 5

Multilin 339 16Pages

Catalog excerpts

All GE Grid Solutions catalogs and technical brochures

Multilin 339
16Pages