Energy Loss Calculator; Introduction - Fluke 434-II User Manual

Introduction

The Analyzer provides advanced analysis of energy usage to help you to determine where
energy losses occur and to visualize their impact on the energy bill. The Energy Loss
function allows to determine losses due to several causes:
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The Analyzer will measure these components simultaneously. Energy Loss Calculator
uses patented algoritms to calculate losses and to monetize them. The costs due to
Effective W, Reactive var, Unbalance VA, Distortion VA and Neutral A are displayed
per Hour. The total costs are displayed per year which gives you an impression of
possible savings on a yearly basis.
Four different rates can be set (price per kWh as a function of period of day). The length
(meters or feet) and diameter (square millimeter or AWG/American Wire Gauge) of the
cables between service entrance and the load can be set manually.
In AUTO mode a loss of 3% due to wire resistance is assumed which is normal for an
average distribution system.
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Effective kW. Loss due to transport of the effective power. Caused by resistance of
wires. This is the only component of the power that is transferable in useful
mechanical energy.
Reactive kvar. Loss due to reactive power that is being transported back and forth
through the system, but does not deliver active work. The loss is caused due to the
current flowing.
Unbalance kVA. Loss due to unbalance in source and load. This unique measuring
function helps to reveal losses occurring due to unbalance in the network. Unbalance
power is Fundamental Power minus positive sequence Power.
Distortion kVA. Loss due to distortion power (harmonics). Allows you to quickly
determine on forehand the savings due to active filtering or other system
improvements. Distortion kVA due to harmonics is real power (W) minus
fundamental power (W fund).
Neutral A. Loss due to currents in neutral conductor. Besides from being a possible
source for unsafe situations such as overheating, large current that flows in the
Neutral conductor of the system will cause losses too.
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Energy Loss Calculator

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