Skip to main content


CALL US: 1.806.364.1166

Home

Account Login

Loading NISC SmartHub log in. Please wait...

'Loading NISC SmartHub log in. Please wait...'
Menu

Alerts

  • We are here for you 24/7, call our office 806-364-1166 if you have an outage to report!
  • Thinking about solar for your home? Click here first!
  • We'd like to hear from you. Click here for our survey.
  • New laws threaten to disrupt a fair agreement between co-ops and for-profit telecom companies. Click here to contact your reps to SAY NO
1 of 4 
  • About DSEC
    • About Touchstone Energy Cooperatives
    • Cooperative Principles
    • Deaf Smith County Economic Development
    • News & Events
    • 2022 Annual Meeting Recap
    • 2023 Annual Meeting Recap
    • 2024 Annual Meeting Recap
    • Employment with DSEC
    • Privacy Policy
    • Service Territory Map
    • Terms and Conditions
  • Member Services
    • Youth Tour
    • Scholarship Application
    • Together We Save
    • Electric Vehicles
    • Texas Co-op Power
    • Co-op Connections
    • Co-ops Vote
    • New Member Guidebook
    • Solar Energy
    • Sponsorships and Donations
  • Public Safety
    • Storm Center
    • Safety Quiz
    • Kids Safety Zone
    • Call 811
    • Meter Installation Specs
    • Three Phase Service
  • Service Contracts
  • Outage Center
    • Load Shed Information

Three Phase Service

Protecting Your Electrical Equipment

At DSEC, we take pride in the quality and reliability of our electric service. Nevertheless, events beyond our control may cause power interruptions and fluctuations. That's why it's important to know that customers are ultimately responsible for protecting their valuable electrical equipment. Depending on your type of electric service and application, you may need to take additional steps to ensure that your equipment is properly protected.

Service to Meet Your Specific Electrical Requirements

OUC delivers "single-phase" or "three-phase" service to customers, depending on the specific power requirements that need to be met. The electrical needs of most homes and small businesses are normally met with single-phase service commonly recognized as the 120/240 volt service. Other customers - such as large industries, shopping centers, and even some homes - have electrical equipment that requires three-phase service. Air conditioners larger than five tons, commercial refrigeration, motors, and pumps are examples of equipment that may run on three-phase power.

Three-phase Equipment Needs Added Protection

To run properly, three-phase equipment requires three energized lines. When voltage is lost in any one line, unprotected three-phase equipment may continue to run and overheat which can result in extensive damage or equipment failure. This type of interruption could be caused by acts of nature such as lightning, falling tree limbs, wind, or even electrical problems within your facility or home. Typical thermal protection such as fuses, breakers, or overload devices may not be sufficient to protect your three-phase equipment when such power interruptions occur.

A Worthwhile Investment

Fortunately, various types of sensors and supervisory relays are available to give you this added protection. These monitoring relays are installed by a licensed electrician and can protect against phase loss, phase imbalance, reversal, under-voltage, and over-voltage conditions. Considering the high cost of three-phase equipment, the added insurance provided by this type of protection is a worthwhile investment. Take Charge! Remember: Customers are responsible for properly protecting their electrical equipment. Although power interruptions are infrequent, they do occur. Be sure to have a licensed electrical contractor inspect your three-phase equipment and install the added protection, if needed.

Back to Top
HEREFORD WEATHER

Co-Ops Vote

Contact Us

Hours: 8 am to 5 pm

Monday - Friday

Location: 1501 E. 1st Street

Hereford, TX 79045

Phone: 806-364-1166

Link to SMS Privacy Policy: https://www.deafsmith.coop/privacy-policy-0  Link to SMS Terms and Conditions: https://www.deafsmith.coop/terms-and-conditions

©2025 Deaf Smith Electric Cooperative, Inc. All Rights Reserved.

  • About DSEC
    • About Touchstone Energy Cooperatives
    • Cooperative Principles
    • Deaf Smith County Economic Development
    • News & Events
    • 2022 Annual Meeting Recap
    • 2023 Annual Meeting Recap
    • 2024 Annual Meeting Recap
    • Employment with DSEC
    • Privacy Policy
    • Service Territory Map
    • Terms and Conditions
  • Member Services
    • Youth Tour
    • Scholarship Application
    • Together We Save
    • Electric Vehicles
    • Texas Co-op Power
    • Co-op Connections
    • Co-ops Vote
    • New Member Guidebook
    • Solar Energy
    • Sponsorships and Donations
  • Public Safety
    • Storm Center
    • Safety Quiz
    • Kids Safety Zone
    • Call 811
    • Meter Installation Specs
    • Three Phase Service
  • Service Contracts
  • Outage Center
    • Load Shed Information