PLC Hybrids

RFL offers a wide range of Hybrid equipment for a complete Power Line Carrier solution. These products include Balanced, Skewed, Splitter and Combiner Hybrids.

Hybrids

Power Line Carrier Hybrids

Looking for product support? Click here to open a customer case.

Quick Links


RFL™ Power Line Carrier Hybrid Pro™ System

RFL™ Power Line Carrier Hybrid Pro™ System
  • Single-card module design for ease-of-use.
  • Front BNC test points eliminate the need for adapters.
  • Improved port labeling for easy identification.
  • Convenient reflected power meter connections to eliminate circuit interruption during testing.
  • Space-saving Splitter, Splitter/Combiner, and Bypass hybrids occupy one chassis slot.

Download the RFL™ Power Line Carrier Hybrid Pro™ System Flyer (PDF)


About Hybrids

Hybrids are passive devices used to couple power line carrier (PLC) signals to/from the transmission line for relay protection communication channels. The hybrids are the interface between PLC transmitters and receivers in the control building and the line tuner in the switchyard. They are installed in a 1RU chassis which is typically installed next to the transmitters/receivers. Generally, hybrids perform two basic, simultaneous functions:

Isolate transmitters from transmitters, or transmitters from receivers

  • Prevent transmitters from loading/interfering with each other
  • Prevent local transmit signals (high level) from appearing as noise to local receive signals (low level)

Combine and split signals to set them up for the appropriate line coupling scheme

  • Onto one coax cable for single-phase-to-ground coupling
  • Onto two or three coax cables for phase-to-phase and 3-phase (mode 1) coupling

An ideal hybrid would perform these functions at no cost. However, a price is paid – a loss of signal power through the hybrids. The most common hybrid names are also a description of their loss characteristics: a balanced hybrid is so named because the losses are “balanced” (equal), while in a skewed hybrid the losses are “skewed” (unequal). Hybrid design and PLC channel design must take these losses into account to minimize their effect on the channel performance. Improper application of hybrids will result in excessive channel losses, inadequate isolation between channels, or both.

• Back to top

RFL Connect

Past CONNECT Course Archives

Download Videos


Online Training Courses In
Networking, Communications,
Protection & Cyber Security

Learn more

Utility Industry Solutions

Utility industry and electric utility white papers by RFL providing communications and protection solutions to today's challenges, such as migrating data from leased lines.

FEATURED WEBINAR:
Helping Utilities Move Forward in IP Migration

FEATURED SOLUTION:
Multipoint-to-Multipoint Protective Relaying Signaling Using Digital Communications and Built-In Logic

Read our Electric Utility White Papers

Upcoming Events

Find RFL and Hubbell at an upcoming trade show in your area!

See Upcoming Trade Shows

Support

RFL offers a 24-hour emergency service program that provides specialized service anytime, anywhere in the world. All of RFL's products are engineered and manufactured to the highest-quality standards and are supported by a team of highly trained customer service engineers.

Contact Sales Associate