Configured for high-speed transmission line protection and dual-breaker management in substation automation frameworks, the GE Multilin L90 (L90 Line Distance and Differential Protection Relay) provides direct physical/electrical execution. This modular device processes phase-segregated current differential computations and multi-zone distance trajectories, executing synchronized sampling routines to isolate multi-terminal overhead lines and underground cables during power network fault conditions.
Hardware Specifications
Parameter
Specification
Model
L90
Brand
GE Multilin (General Electric)
Series
UR (Universal Relay) Series
Origin
Canada / United States
Weight
Standard UR series horizontal 19-inch rack-mount profile
Dimensions
4U standard chassis envelope configuration
Operating Temp
Standard substation environmental limits
Power Consumption
Sourced via internal UR modular power supply options
Application Scheme
Single-pole and three-pole tripping for single/dual-breaker layouts
Sensor Compatibility
Series-compensated lines and Capacitively-Coupled Voltage Transformers (CCVT)
Network Interfaces
Three independent fiber/copper Ethernet ports, direct fiber, serial interfaces
Integrated full-color display with bay mimic, annunciator, and phasor graphs
Industrial Control and Ethernet Network Connectivity
The protection relay implements advanced IEC 61850 process bus communication velocities, supporting deterministic data exchanges across station and process networks. High-density I/O routing scales dynamically, allowing the processing core to ingest sampled values from remote Merging Units via IEC 61850-9-2LE or Hardfiber architectures.
