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.
Protection and Control
Protection and Control
- Comprehensive current, voltage and frequency protection functions
- Directional Power and Wattmetric Ground Fault
- Wide variety of protection curves
- Synchrocheck, CLP, 2nd Harmonic Blocking, Breaker Failure and Lockout functions
- Integrated arc flash protection
- Comprehensive metering
- Event Recorder: 256 events (1ms time stamping)
- Programmable oscillography and Fault Report
- Relay health diagnostics
- Breaker monitoring and CT/VT supervision
- Security and password control
- SNTP, IRIG-B or IEEE 1588 time synchronization
Communications
- Front USB and rear serial, Copper/Fiber Ethernet and dual port options for seamless redundancy (IEC 62439-3, PRP and HSR)
- 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 and OPC-UA (IEC 62541)
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
Characteristics
- Cost-effective and flexible protection and control for utility and industrial applications
- 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
- 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
Useful Files
