Dranetz Guide Guía de usuario descargar pdf (Pagina 62)

Dran-View 6 User Guide

Advanced

Category

G5/4 Prediction of a new nonlinear load/Harmonics against limits

Page 1

Enterprise

Edition

Only

This page allows you to enter the

current harmonics (Amps) for a new

non-linear load. The manufacturer of

the new equipment usually supplies

these figures. The predicted voltage

harmonics are calculated from the

given current harmonics. The predicted

and the measured voltage harmonics

are then summed up and may be

compared against the G5/4 planning

levels (limits).

This module was implemented for the UK market, but may be useful for others.

It is based on the “ENGINEERING RECOMMENDATION G5/4 February

2001”.

Do you want to predict Voltage Harmonics for a new non-linear load?

You need to check this option to activate this page. If it is not

checked, you will still be able to proceed to the next

(comparison) page. However you will only compare measured

harmonics without the influence of predicted harmonics.

Nominal system

voltage

Only the following options can be selected: 400V, 6.6kV,

11kV, 20 kV, or 22 kV.

Cumulative

threshold(1-

100%)

This edit-box should contain a statistical value between 1-

100%. Most power quality standards include information about

this number; usually 95% or 100% is used. If a value other

than 100% is used, some fluctuations are filtered out. A 95%

value means that the worst (highest) 5% is excluded.

Open / Save Use these buttons to load or save you settings to a file (.DLM).

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Dranetz Guide Guía de usuario Pagina 62