Basler Electric 277 – Static Programmable Powerline Carrier Channel

The Basler Electric 277 is a static programmable powerline carrier (PLC) channel designed for reliable communication over high‑voltage transmission lines. It enables the transfer of protection, control, and telemetry signals between substations without the need for dedicated communication cables, making it an essential component for modern power system automation.

Design and Functionality

The unit operates by injecting high‑frequency carrier signals onto the power line, which are then received and demodulated at the remote end. It features programmable frequency selection, adjustable output levels, and integrated filtering to ensure clear signal transmission even in the presence of line noise. The static design eliminates mechanical components, enhancing reliability and reducing maintenance requirements.

• Frequency range: 40–500 kHz (programmable)

• Output power: up to 10 W (adjustable)

• Modulation: amplitude or frequency shift keying (selectable)

• Channel bandwidth: 4 kHz standard

• Input signals: dry contacts or analog (0–10 V)

• Output signals: relay contacts or analog

• Power supply: 120/240 V AC or 125/250 V DC

• LED indicators: carrier on, receive signal, fault

• Mounting: 19‑inch rack or panel

• Operating temperature: –20 °C to +65 °C

Applications

The 277 is commonly used in powerline carrier schemes for teleprotection, remote tripping, and SCADA communication. It is suitable for both overhead and underground transmission lines.

Installation and Configuration

Mounting is via standard rack or panel hardware. Configuration is performed through front‑panel controls or via a serial interface.

Reliability and Standards

Built with industrial‑grade components, it complies with IEC 60495 and IEEE 643 standards.

In summary, the Basler Electric 277 provides robust, programmable powerline carrier communication for critical power system applications.