Skip to content

UST

Industrial-Grade Automatic Voltage Regulators

All Products Designed and Built in the United States
UST is an ISO 9001:2015 Certified Company

About
Products
Case Studies
White Papers & Resources
Press Info
Contact

Search:

About
Products
Case Studies
White Papers & Resources
Press Info
Contact

AVR Guide: Automatic Voltage Regulator Function

Automatic Voltage Regulator Function

An overview of what automatic voltage regulators do and how they work in various AC power applications.

AVR Regulation
Phases and Phase Regulation

To contact us, simply fill out the form below.
First Name*
Last Name*
Email*
Message*
Updates
- Yes, add me to your email list.
Email
This field is for validation purposes and should be left unchanged.

1 Introduction
2 About Automatic Voltage Regulators/Power Conditioners
3 The Need for Automatic Voltage Regulation
4 AVR Function
- 4.1 AVR Regulation
- 4.2 Phases and Phase Regulation
5 The Ferroresonant Transformer (Type) AVR
6 The Mechanical (Type) AVR
7 The Electronic (Type) AVR

UST industrial voltage regulation, voltage correction and voltage optimization solutions are in service at critical-power facilities around the world.

PRODUCTS

Overview
SureVolt™
SagFighter™
MiniEVR™
EcoVolt™
Current Balancer

WHITE PAPERS & RESOURCES

Tech Paper: SagFighter Performance Data
Tool: ROI Calculator
White Paper: Voltage Optimization
White Paper: Protecting UPS Systems at Data Centers
White Paper: Supplementing Diesel Backup
Video: Ferro Vs. MiniEVR
Library: A Guide to Automatic Voltage Regulators

TRANSLATE THIS SITE

Please note: Google Translate service is provided as a convenience. Not all text may be translated accurately or be translated at all.

© 2024 Utility Systems Technologies

Contact Us
Request Quote
Privacy Policy

Footer Menu

DO SMALL ELECTRICAL GLITCHES THREATEN YOUR PRODUCTION YEILD? ARE YOU RELYING ON UPS … OR NOTHING … FOR PROTECTION?

WHAT WORRIES YOU MOST?

WE’RE WORRIED
OUR UPS WILL
FAIL WHEN NEEDED WE’RE WORRIED ABOUT
SAGS IMPACTING
CRITICAL SUBPROCESSES I’M NOT SURE
WHAT OUR MAIN
WORRY IS!

UST’s industrial-grade electronic automatic voltage regulators and power conditioning products silently monitor and correct virtually all voltage events, providing the most reliable insurance against unexpected (and unavoidable!) voltage events.

Products | Contact | Get a Quote

IS YOUR LOCAL GRID SUB-OPTIMAL? UNRELIABLE?

CAN YOU GIVE US ANY SPECIFICS?

WE’VE GOT A
PROBLEM WITH BRIEF
VOLTAGE SAGS.WE EXPERIENCE
CHRONIC VOLTAGE
FLUCTUATIONS.I’M NOT SURE
WHAT OUR
PROBLEM IS!

Over the last decade, UST’s full line of industrial-grade electronic automatic voltage regulators have proven capable of reliably compensating for poor utility power. Thanks to UST, facility managers in developing regions (and those in urban areas in developed regions where the grid is stressed) can now count on perfect power.

Products | Contact | Get a Quote

MOTOR OR CONTROL FAILURES LEADING TO UNPLANNED PRODUCTION STOPS?

CAN YOU GIVE US ANY SPECIFICS?

WE’VE GOT A
PROBLEM WITH BRIEF
VOLTAGE SAGS.WE EXPERIENCE
CHRONIC VOLTAGE
FLUCTUATIONS.I’M NOT SURE
WHAT OUR
PROBLEM IS!

Production stops due to motor or control failures are very costly. Voltage irregularities are often their unidentified source.
UST offers a full line of electronic automatic voltage regulators and power conditioning products. We are the solution system designers trust to solve the headaches caused by the industrial grid.

Products | Contact | Get a Quote

Power Lunch Registration

Name*
First Last
Email*
Company or Affiliation
Hidden
Entry Via MailChimp (Hidden)
Hidden
Power Lunch (Hidden)
Updates
- Yes, add me to your email list.

Download Pharmaceutical Case Study

To download the UST Pharmaceutical Case Study, please fill out the form below.
Name*
First Last
Company*
Email*
Country*

Submit Power Data

Power Data Submission

UST engineers are standing by to analyze your power data and develop a full report on voltage sags and other voltage issues on your production line or at your facility. Your data will be treated as confidential, and only you and others with whom you share your credentials will have access to the final report.
Your Name
First Last
Email*
Phone
Company, Municipality or Institution*
Please submit your data in one of the formats listed below.
We may request additional information to better understand the data submitted. Contact us if you need help determining relevant data to submit or for recommended recording meter types.
Option 1
Best: Attach the direct/raw output file(s) from the meter or software used to record the power data.

Please submit an .odn, .fpqo, .dsd, or similar file type.
Attach File
Max. file size: 50 MB.
Option 2
Better: Attach an easily manipulatable export of the recorded data.

Please submit a .txt, .csv, .xls, or similar file type.

Be sure date/time stamps and voltage data are included in the file.
Attach File
Max. file size: 50 MB.
Option 3
Good: Attach a generated summary report from the meter, software, or third-party power quality assessment.

Submit a .doc, .pdf, .ppt, or similar file type.

Pictures or screen-captures of power quality issues may be useful as well.
Attach File
Max. file size: 50 MB.
In all cases, please indicate:

• The meter model number used to record the data
• The measurement location within the electrical system (e.g. Utility voltage ahead of step-down transformer, or at machine input connections)
Meter Model Number*
Measurement Location*

Download Semiconductor Case Study

To download the UST Semiconductor Case Study, please fill out the form below.
Name*
First Last
Company*
Email*
Country*

This short video explains why modern electronic voltage regulators, like the UST MiniEVR™, should be specified instead of ferroresonant transformers in cases where the load is 2kVA or larger.

EVRs operate at up to 99% efficiency at all times, while ferros typically operate at efficiencies of only 75% to 80%, and frequently operate at efficiencies as low as 50% – wasting electricity and generating unnecessary carbon.
EVRs run silent and cool and can be installed indoors or out, while ferros are noisy and hot and must be installed in a protected indoor environment.
EVRs are specified to match the load exactly, while ferros must be oversized by a factor of 2x to 2.5x.

Download Calculator

To instantly download the UST SagFighter™ ROI Calculator, please fill out the form below.
Name*
First Last
Company*
Email*
Country*