The GE UR 8LM CT/VT Module provides analog current and voltage transformer inputs for Multilin UR protection relays. It delivers high‑accuracy measurement, isolation, and stable analog conditioning for protection, metering, and control functions.
Specifications
Manufacturer: GE Multilin
Model: UR 8LM
Module Type: CT/VT Analog Input Module
CT Inputs: Multi‑channel current transformer inputs
VT Inputs: Multi‑channel voltage transformer inputs
Input Accuracy: High‑accuracy analog measurement for protection and metering
Sensitive Ground Input: Supported depending on relay configuration
Isolation: Channel‑to‑system galvanic isolation
Diagnostics: Analog health monitoring and fault detection
Backplane Interface: UR high‑speed internal analog data bus
Relay Compatibility: F35, F60, C30, B30, L60, T60, and all UR Series relays
Firmware Requirement: UR firmware 4.x or newer recommended
Operating Temperature: −40°C to +70°C
Environmental Protection: Conformal coating for harsh electrical environments
Installation: Plug‑in UR chassis module
Features
High‑accuracy CT/VT measurement: Provides precise analog inputs for protection and metering
Stable analog conditioning: Filtering and scaling ensure reliable relay performance
Strong isolation: Protects relay electronics from electrical disturbances
Full UR compatibility: Works across all GE Multilin UR protection platforms
Integrated diagnostics: Monitors analog channel health and detects faults
Hot‑swappable design: Replaceable without removing the relay from service
FAQ – Common Questions
Q1: What does UR‑8LM do? A1: It provides CT and VT analog inputs for UR protection relays.
Q2: Is UR‑8LM compatible with all UR relays? A2: Yes, including F35, F60, C30, B30, L60, and T60.
Q3: Does UR‑8LM support sensitive ground inputs? A3: Some UR CT/VT modules support sensitive ground; availability depends on relay configuration.
Q4: Does it require specific firmware? A4: UR firmware 4.x or newer is recommended for full analog diagnostic support.
Q5: Is the module hot‑swappable? A5: Yes, it can be replaced without shutting down the relay chassis.
