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: Electronic Voltage Regulator Characteristics

From Utility Systems Technologies, Inc.
 

 
Electronic voltage regulators are typically designed for indoor, low voltage applications and are air-cooled (i.e. using dry-type transformers instead of oil-filled). Other characteristics of tap switching and double conversion EVRs differ substantially so they are listed separately below.

Efficiency for a tap switching EVR is usually fairly flat across the load range from 10 to 100% of rated load. However, the efficiency for a double conversion EVR tends to drop quickly as the load drops below 100%. Other factors like ambient temperature, power factor, load type etc. can also negatively impact double conversion EVR efficiency.

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)
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
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)
Voltage regulators are power converters that provide voltage control capabilities. They accept a voltage that varies over a given range and generate an output voltage that does not vary. Search by Specification | Learn more about Voltage Regulators
Product Announcements
Utility Systems Technologies, Inc. - Energy-Saving Power Conditioners
Many small power conditioners or voltage regulators have operating electrical efficiencies below 60% at low load. They are hot and noisy - all signs energy is being wasted. The Mini-EVR power... (read more)
Utility Systems Technologies, Inc. - UPS Brownout Protection
Brownouts drain UPS batteries and prevent their recharging. When this happens, data centers and sensitive controls are unprotected from voltage problems. The Sure-Volt EVR power conditioner lets UPS... (read more)
Utility Systems Technologies, Inc. - Energy Saving Industrial-Grade Voltage Regulator
The energy-saving Mini-EVR voltage regulator is a very green alternative to the CVT or ferroresonant transformer found in many commercial and industrial applications. The Mini-EVR can save 15% to 40%... (read more)
Utility Systems Technologies, Inc. - Custom Voltage Sag Mitigation
UST produces deep voltage sag protection products - without batteries or energy storage. Singinificantly lower in cost and to own and maintain than a UPS, the Sag Fighter™ has been reported by... (read more)
Utility Systems Technologies, Inc. - Custom Active Voltage Conditioners
The Sag Fighter active voltage conditioner is available in sizes up to 2,500 kVA to provide continuous, real-time protection from costly voltage sags without the need for batteries or mechanical... (read more)
Utility Systems Technologies, Inc. - Industrial-Grade 3 Phase Voltage Sag Protection
Protecting industrial operations from voltage sags with computer-grade solutions is so expensive and maintenance intensive that many businesses cannot justify sag protection. The Sag Fighter active... (read more)
Utility Systems Technologies, Inc. - Power Conditioning for Schools
Today's school district and university have millions of dollars invested in electronic devices and technologies to save energy and increase productivity. Power quality problems put this investment at... (read more)
Utility Systems Technologies, Inc. - High Fault Clearing VRT
A voltage regulating transformer (VRT) for the bypass of a UPS must handle large currents to permit protective devices to operate properly. Ferroresonant transformers and many voltage regulators... (read more)
Utility Systems Technologies, Inc. - Hi-Efficiency, Industrial-Grade Voltage Regulator
The high efficiency model of the Sure-Volt voltage regulator combines the highest available efficiency with the reliability and ease of application of an industrial-grade voltage regulator. Where... (read more)
Utility Systems Technologies, Inc. - Energy Efficiency & Power Quality in Schools
Free Whitepaper - Energy Efficiency & Power Quality in Schools Today's schools have millions of dollars invested in electronic devices and technologies intended to save energy and increase... (read more)
Topics of Interest
The double conversion electronic voltage regulator differs significantly in operation from the tap switching type EVR. The double conversion EVR uses a rectifier to convert AC power to DC and then... (Read More)
The EVR is the modern standard for voltage regulation in most power quality applications. While an EVR will be about 25% higher in cost than a comparable mechanical voltage regulator, the difference... (Read More)
The typical electronic tap switching voltage regulator works very much like the mechanical tap switching regulator - except that it replaces mechanical servo drives and brushes with solid-state... (Read More)
The full on-line system shown in Fig. 5.1, now also referred to as a double conversion module, is better illustrated in Fig. 5.13. Under normal operation, that is, mains supply is present, the... (Read More)
Dariusz Czarkowski, Department of Electrical and Computer Engineering, Polytechnic University, Brooklynm,, New York USA 13.1 Introduction Modern electronic systems require high quality,... (Read More)
See more product announcements for Three Phase Uninterruptible Power Supplies (UPS)
Introducing the Eaton 9130 UPS

Introducing the Eaton 9130 UPS
Energy Control Systems


Custom Uninterruptible Power Supply, Three Phase

Custom Uninterruptible Power Supply, Three Phase
Storage Battery Systems, Inc.


2,000 kVA Active Voltage Conditioner

2,000 kVA Active Voltage Conditioner
Utility Systems Technologies, Inc.


11 See more product announcements for Three Phase Uninterruptible Power Supplies (UPS)