Product Description
General Electric L90-UC3-HKH-F8L-H4D-LXX-N6X-SXX-UXX-W7C Multilin Line Differential Relay
- Manufacturer: General Electric (now under GE Vernova)
- Series: Multilin L90
- Model/Part Number: L90-UC3-HKH-F8L-H4D-LXX-N6X-SXX-UXX-W7C
- Description: Line Current Differential Relay for transmission line protection in Multilin L90 series
Overview
The General Electric L90-UC3-HKH-F8L-H4D-LXX-N6X-SXX-UXX-W7C is a Line Current Differential Relay from the Multilin L90 series, manufactured by GE and now managed by GE Vernova. Designed for high-speed, secure, and reliable protection of power systems, it provides advanced line differential protection for overhead lines, underground cables, and series-compensated lines. It supports a wide range of applications in power generation, transmission, and distribution, offering metering, monitoring, and control capabilities in a single unit.
Technical Specifications
| Specification | Details |
|---|---|
| Model | L90-UC3-HKH-F8L-H4D-LXX-N6X-SXX-UXX-W7C |
| Series | Multilin L90 |
| Type | Line Current Differential Relay |
| Function | High-speed line differential protection, distance protection, control, and monitoring |
| Power Supply | 125–250 V AC/DC (High Voltage, HKH) |
| CPU | Type U: RS485 + 10/100BaseT Ethernet, RJ45 (UC3) |
| CT/VT Inputs | 8L: 4 CT/4 VT with enhanced diagnostics |
| Digital I/O | 4D: 8 digital inputs, 4 Form-C outputs |
| Transceiver | W7C: 1300 nm, single-mode, ELED, 2 channels |
| Outputs | F8L: 8 fast Form-C outputs |
| Analog I/O | LXX: No analog inputs/outputs |
| Control Options | N6X: Breaker control with 6 breaker failure elements |
| Security Options | SXX: Standard security |
| User Interface | UXX: Standard interface |
| Protection Features | Line differential (87L), distance protection (21P/M), ground fault (67N), overcurrent (50/51), breaker failure (50BF), autorecloser |
| Metering | Current, voltage, power, energy, frequency, harmonics |
| Communication Protocols | IEC 61850, DNP3, Modbus, IEC 60870-5-104 |
| Connectors | RJ-45 Ethernet, RS485, terminal blocks for I/O and CT/VT |
| Display | Enhanced front panel with English display |
| Mounting | Horizontal 19-inch rack mount |
| Operating Temperature | -40°C to +60°C (-40°F to +140°F) |
| Storage Temperature | -40°C to +80°C (-40°F to +176°F) |
| Relative Humidity | Up to 95% (non-condensing) |
| Dimensions | Approx. 48.3 cm x 13.3 cm x 28.5 cm (19.0 x 5.2 x 11.2 in) |
| Weight | Approx. 7.5 kg (16.5 lbs) |
| Certifications | CE, UL, CSA, IEC |
| Compatibility | Multilin Universal Relay platform, EnerVista software |
| Manual | GEK-113406 (Multilin L90 Manual) |