Go to GlobalSpec.com Home
Alert   Product Alerts
Keep current on the latest products, new suppliers, and technical articles of interest to you. (See Topics)

Technical Article: Automatic Voltage Regulator Phases and Phase Regulation

From Utility Systems Technologies, Inc.
 

 

Automatic voltage regulators can be designed for single phase or three phase AC applications.

It is common for utilities to use single phase automatic voltage regulators ganged together to provide voltage regulation for three phase. These are often "can-type" units pole-mounted outdoors.

Single phase automatic voltage regulators may also be used where a three phase source is used to supply three single phase loads. Most three phase AVRs may also be used to feed single phase loads.


Products & Services
Three phase uninterruptible power supplies (UPS) operate in conjunction with existing electrical systems to provide power conditioning, back-up protection, and distribution for electronic equipment loads that use three-phase power.  Search by Specification | Learn more about Three Phase Uninterruptible Power Supplies (UPS)
Uninterruptible power supplies (UPS) are backup batteries that provide emergency power to electrical systems in case power becomes unavailable. They are connected between a power source (such as an electrical outlet) and the equipment to protect (such as a motor or computer). Search by Specification | Learn more about Uninterruptible Power Supplies (UPS)
Power or line conditioners regulate, filter, and suppress noise in AC power for sensitive computer and other solid state equipment. Search by Specification | Learn more about Power Conditioners
Line conditioners, also known as power conditioners or power line conditioners, are regulators that protect equipment from excessive fluctuations in the utility line, or power system voltage. Learn more about Line Conditioners
Single phase uninterruptible power supplies (UPS) sit between an AC outlet and an electronic device to provide power conditioning, back-up protection, and distribution for electronic equipment loads. They also prevent power disturbances from affecting the performance and life of the electronic device and vital data.  Search by Specification | Learn more about Single Phase Uninterruptible Power Supplies (UPS)

Product Announcements
Utility Systems Technologies, Inc. - Whitepaper: Comparing Utility Voltage Regulation
When it comes to voltage regulation for large industrial or commercial applications, some confusion often arises about two different types of automatic voltage regulators (AVR): the medium voltage... (read more)
Utility Systems Technologies, Inc. - Voltage Regulating Transformer for UPS Bypass
Voltage regulating transformers (VRTs) protect sensitive equipment from unregulated utility power when a UPS goes into bypass operation. The bypass conditioner regulates voltage to equipment or bus... (read more)
Pilz Automation Safety L.P. - Voltage Monitoring Relays
Pilz voltage monitoring relays can be used to monitor voltage limit values in single or three-phase supplies, with AC or DC voltage, depending on the technical design. (read more)
Powerstar, Inc. - Shipboard 2.2KVA tower 901D grade A UPS Mil spec
Features of the PS2201-SS Grade A 2.2KVA/1980 watt Mini tower shaped case UPS- Hull mount and straps available. Ø Mil-Std-901D-A Mil-Std-167 Ø Shipboard Delta Power 120VAC to 240VAC. Ø 304... (read more)
Georator Corp. - Frequency Converter, Rotary MG, 50/60/400Hz
Frequency Converter, Rotary Motor Generator Set in power ratings from 1-1500kVA, with 50Hz, 60Hz and 400Hz outputs. Provides accurate and stable output power, as well as complete isolation from... (read more)
MetricTest - Sorensen SLH Series
Programmable, High Power AC or DC Electronic Loads The Sorensen SLH Series are fully programmable, high power AC or DC electronic loads. The 500V models are for PFC testing, power transformers and... (read more)

Topics of Interest
System voltages fluctuate due to the ever-changing load consumption characteristics of customers. Voltage at the customer's premises must be maintained within a range that will permit the customer... (Read More)
Discussions of and problems related to single-phase KVA and power factors, three-phase power factor and line current, phase sequence, unbalanced load, power factor correction, transmission line,... (Read More)
When it comes to voltage regulation for large industrial or commercial applications, confusion often surrounds two different types of automatic voltage regulators (AVR): the medium-voltage mechanical... (Read More)
Overview This chapter covers the functions performed by high-voltage power transmission and distribution equipment in the electrical power industry. Basic transformer theory is discussed here to... (Read More)
Introduction The squirrel cage induction motor is probably the most widely used motor in industry today. Traditional applications for AC induction motors include fans and pumps. The AC induction... (Read More)