| Publisher | American Power Conversion (APC) | ||
|---|---|---|---|
| Format | HTML & PDF | Date added | 08 Apr 2009 |
| Topics | Line Protection Devices, Data Center, Infrastructure Management, UPS, Cost Control - Risk Mgmt. | ||
| Downloads | 576 | ||
This note helps explain the differences between Watts and VA and explains how the terms are correctly and incorrectly used in specifying power protection equipment.
Related white papers
Strategic Metering
Utility missions are changing. Yesterday, they focused on delivery of reasonably priced energy and water. Tomorrow, they will encompass both supplies and the services that facilitate sustainable use. ...
The Different Types of UPS Systems
There is much confusion in the marketplace about the different types of UPS systems and their characteristics. Each of these UPS types is defined, practical applications of each are discussed,...
Neutral Wire Facts and Mythology
This technical paper discusses many common misunderstandings about the function of the neutral wire and its relation to power problems. The subjects of dedicated lines, phase reversal, isolation transformers, and...
Use of 208V vs 120V for Servers
This paper explains why and when 208V is used instead of 120V for servers in North America. This same discussion applies to the use of 200V vs 100V in Japan.
What are the IEEE Requirements for Protectors?
The IEEE (Institute of Electrical and Electronics Engineers) published a document, IEEE Std. 587-1980, that described the “surge environment”,i.e., the size of the surges that equipment connected to AC wiring could...
Answers to Basic Power Protection Questions
Some of the frequently asked questions when considering surge protection and power conditioning are: “How much protection do I get from a particular model of surge protector?,” “What is the...
UPS Power Management Using Win98 and USB
Microsoft has an important new power management capability built into Win98. It is implemented by Microsoft drivers under the new WDM32 (Windows Driver Model 32) layered driver architecture for Win98....



