Power Utilities

TC Communications has provided critical communications equipment for power generation and distribution for over 25 years. Applications Include:

Teleprotection over IP, MPLS, & T1

SCADA Networks

Legacy Network Modernization

Customer Success Stories

North Iowa Power Cooperative

Tucson Electric Power

Texas-New Mexico Power

Where TC Specializes


  • Extending IEEE C37.94 for Teleprotection applications
  • Extending 6.703/64K Co-directional interface over Ethernet
  • Very Low Latency (sub 5 msec.) devices
  • Serial (RS-232, RS-422/RS-485) over isolated T1 network
  • Real-time network communications via Ethernet, Fiber, or T1/E1
  • Modernizing aging networks with robust Multi-service Ethernet Platforms

Extensive Industry Applications



Teleprotection over IP, MPLS and T1 Networks

Our specialized products provide secure transmission with very low latency making them strong solutions for protecting the power grid. When a protection relay is triggered by a power fault passing signals between substations through fast and reliable communication channels are critcal. Our solutions also come with quality of service (QoS) to minimize congestion on the backbone network. Supported interfaces include:

  • C37.94
  • Serial RS-232
  • G.703

Related Products:

G.703/64K over IP Gateway (JumboSwitch® Series)

C37.94 over IP Gateway (JumboSwitch® Series)

Serial over T1 (Mini Channel Bank Series)


Customer Success Stories

Tucson Electric Power

Video: Texas-New Mexico Power

JumboSwitch® Provides G.703-to-Ethernet Link for Teleprotection Communication in MPLS Network

SCADA Applications

Real-time communications required in Supervisory control and data acquisition (SCADA) is essential for condition monitoring within power networks. TC builds products that support the real-time communications needed, whether running over Ethernet/IP, Fiber, or T1/E1. Utilizing a modern IP platform, the JumboSwitch® offers a complete solution to monitor network applications and identify abnormal conditions. Or isolate substations with T1 lines for security. Trust the experience of TC Communications with over 25 years of experience.

Related Products:

Serial Server (JumboSwitch® Series)

Low latency Serial over IP (JumboSwitch® Series)

Multi-Interface Fiber Optic Multiplexer (Legacy Series)


Customer Success Stories

Isolating Substations Using T1 Networks

Power Utility Replaces Leased Lines With Multi-Service Ethernet Solution

California Hydroelectric Site Opts for New Fiber Optic Solution

Legacy Network Modernization

Modernizing older networks to the more robust Ethernet/IP standard creates question in how to utilize older yet still reliable legacy devices. From 4-wire analog to T1 leased lines there is a TC product that supports it. Our strategy includes a comprehensive integration of existing legacy networks as well as a gradual shift to Ethernet/IP. We can use existing fiber and microwave IP/MPLS networks to connect analog and T1/E1 equipment. JumboSwitch® products provide plenty of options for connectivity. Our Ethernet-over-PDH technologies include:

  • Ethernet over T1/E1
  • Ethernet over T3/E3
  • Ethernet over OC-3/STM-1

Related Products:

JumboSwitch®

JumboSwitch® DIN Rail Version

Analog and Dry Contact IP Gateway Card (JumboSwitch® Series)

Industrial VoIP (JumboSwitch® Series)


Customer Success Stories

Northern Iowa Power Cooperative

TC Communications Hurricane-Proofs Jamaica's Network

Paraguay Power Company Deploys JumboSwitch as Lower Cost Alternative to SONET/SDH System

Customer Successes

Texas-New Mexico Power Teleprotection over IP Concerns

A Texas-based utility service provider had concerns about using teleprotection over IP. Rounds of test were conducted that addressed past problems and future concerns. Doing so they were able to get a clear representation of equipment performance.

Watch the video about Texas-New Mexico Power’s journey



NIPCO, an Iowa Power Cooperative, Uses GigE Switches

Updating key components and equipment for a multi-county utility network is no easy task. When a power cooperative from Iowa needed to do just that, they contacted TC. In less than two months NIPCO integrated a network that increased flexibility and reduced maintenance time.

Read more about the project

Tucson Power Successfully Deploys Teleprotection-over-IP Links

Tucson Electric Power Grid (TEP) was in a lengthy search to find equipment to suite their legacy integration needs. They required a TDM over IP/Ethernet solution with stringent latency requirements. Using TC Communications products TEP experienced latency readings well within their standards.

Read the full case study here



Paraguay Power Company Deploys JumboSwitch as Lower Cost Alternative to SONET/SDH System

The National Power Company of Paraguay (ANDE) requirements for the new communications system were rigorous. It needed to support teleprotection relay circuit latency requirements of less than 12 msec. (round trip), provide E1 connectivity to PBXs located at two substations, and enable dedicated POTS service with PBX capability to all nodes. The solution that fulfilled all of ANDE’s requirements was the JumboSwitch Multi-service Ethernet Platform.

Read the full case study here

In Their Words

“Our communications network has been operating very reliably since installation several years ago. We have been extremely pleased with TC Communications products and with their excellent customer support.”
- Louie Mastronardi, Protection and Control Engineer at Greater Sudbury Hydro
“The [JumboSwitch®] product has performed well and any minor issues or concerns have been handled by the technical staff at TC Communications in a very timely fashion… I would highly recommend their products and services.”
- Keith J. Schiltz, MDT Services Manager
See the full review from NIPCO

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