The Multilin™ 345 is a member of the Multilin 3 Series protective relay platform and has been designed for the protection, control and management of power transformers as primary or backup protection device. The 345 provides advanced transformer protection, control and monitoring in one economical draw-out or non draw-out design. The 345 contains a full range of self-contained protection and control elements as well as advanced communications, metering, monitoring and diagnostics.
Key Benefits
Secure high-speed protection with improved energization inhibiting
Field-proven algorithms and reliable protection to avoid unwanted trips or under-protection
Integrated transformer thermal monitoring for asset management maintenance optimization
Ground current supervised sensitive ground fault protection for detection of ground faults down to 5% of the winding
Temperature monitoring via remote RTD’s using the RMIO module supporting up to 12 RTDs
Ease of use and flexibility with one-step setup, universal CT inputs and assignable CT inputs
Flexible communications with multiple ports and protocols allowing seamless integration
Powerful Security and hierarchical password control for centralized management
Drawout design simplifies testing, commissioning and maintenance, thereby increasing process uptime
Application flexibility with the use of programmable logic elements
Switchgear diagnostics and easy troubleshooting by trip/close circuit supervision and LED and Digital Output Test Mode
Environmental monitoring system to monitor operating conditions and plan preventative maintenance
Robust design exceeding industry standards, with Automotive Grade components and advanced testing procedures such as accelerated life cycle testing
Draw out or non draw out options available
Simplified migration of legacy MII Family relays to the 3 Series platform
Intuitive configuration software and user-friendly logic configuration tool
Applications
Application flexibility with the use of programmable logic elements
Switchgear diagnostics and easy troubleshooting by trip/close circuit supervision and LED and Digital Output Test Mode
Environmental monitoring system to monitor operating conditions and plan preventative maintenance
Robust design exceeding industry standards, with Automotive Grade components and advanced testing procedures such as accelerated life cycle testing
Draw out or non draw out options available
Simplified migration of legacy MII Family relays to the 3 Series platform
Intuitive configuration software and user-friendly logic configuration tool
Protection & Control
The 345 transformer protection system is designed to protect and control small to medium size power transformers. Flexible and powerful, the 345 provides advanced transformer protection, control and monitoring in one economical draw-out design. The 345 contains a full range of self-contained protection and control elements as detailed in the Functional Block Diagram and in the Features table. The 345 can be even used for dual feeder protection.
