GE Multilin 350  Intuitive and Innovative Feeder Protection

The Multilin™ 350 is a member of the Multilin 3 Series protective relay platform and has been designed for the protection, control and management of feeders or related applications as a primary or backup protection device. This cost-effective protective device is used to perform advanced feeder protection, control and monitoring in a drawout or non-drawout design for low, medium and high voltage applications. The 350 also offers enhanced features such as metering, monitoring and diagnostics, preventative maintenance, advanced communications and security. 

 Key Benefits 

 Protection and Control 

 • Comprehensive current, voltage and frequency protection functions 

 • Directional Power and Wattmetric Ground Fault 

 • Cost-effective and flexible protection and control for utility and industrial applications 

 • Field-proven algorithms and reliable protection to avoid unwanted trips or under-protection 

 • Ease of use and standardization with one-step setup and universal CT inputs 

 • Environmental monitoring system to monitor operating conditions and plan preventative maintenance 

 • Advanced power system and switchgear diagnostics 

 • Flexible communications with multiple ports and protocols allowing seamless integration 

 • Integrated arc flash detection using light sensors supervised by over current to reduce incident energy and equipment damage 

 • Arc flash mitigation via zone inter-tripping, flex curves and multiple elements and setting groups

 • Powerful security and hierarchical password control for centralized management 

 • Application flexibility with the use of programmable logic elements 

 • Drawout design simplifying, commissioning and maintenance, thereby increasing process uptime

 • Increased network availability with zero failover time through IEC® 62439-3 PRP and HSR support 

 • Precise time synchronization through IEEE® 1588 (Precise Time Protocol (PTP)) support 

 • 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 

 Applications 

 • Primary protection and control for MV and HV utility and industrial overhead or cable feeder applications 

 • Protection for distribution transformers of various sizes and voltage levels 

 • Back-up protection for various HV application and capacitor bank protection 

 • Advanced control applications including Cold Load Pickup, multi-shot recloser and multiple settings groups 

 • Protection, control and monitoring of LV Incoming feeder providing flexible communications and eliminating the need for auxiliary equipment 

 • Protection against corrosion and humidity required for harsh environments

CONTACT INPUTS 

 Inputs: 10 

 Selectable: 17, 33, 84, 166 VDC 

 thresholds: ±10% Recognition time: 1/2 cycle 

 Debounce time: 1 to 64 ms, selectable, in steps of 1 ms 

 Maximum input voltage & continuous current draw: 300 VDC, 2 mA, connected to Class 2 source 

 Type: opto-isolated inputs 

 External switch: wet contac

350-C-C-P5-S5-H-E-E-N-N-4E-D-N

350-E-P5-G5-H-E-S-N-N-1E-D-N

350-EP0G0HAENN3ENN

350-E-P5-G5-H-S-S-N-N-SN-D-N