Dranetz Visa Guia do Utilizador descarregar pdf (Página 84)

5-6

Overview

Section B

Wizard Setup

Overview

Introduction

Wizard Setup guides the user through the circuit setup step-by-step, via a series of

screens prompting for information about the circuit to be monitored. The unit

automatically turns on the correct channels, sets the parameter thresholds and

waveform capture settings depending on the detected circuit type, nominal voltage and

current values, and monitoring mode specified by the user.

Monitoring

modes

The PowerVisa allows users to monitor events in the following setup categories:

Standard Power Quality, Long-term Timed Recording, Continuous Data Logging, and

EN50160 Power Quality mode. Selecting any setup category automatically sets trigger

and capture conditions. Advanced users are free to mix and match settings (see Chapter

6 Advanced Setup Options).

Standard Power Quality, Demand, Energy: The PowerVisa algorithms automatically

evaluate existing rms and waveform conditions to optimize setups to reliably capture

data. This feature ensures that the first-time user gets the expected results, while

providing the experienced user with the ability to tweak settings for specific

applications. Either way, the necessary data used to identify critical events and

optimize mitigation solutions is recorded into the data card as it occurs.

Long-term Timed Recording, Demand, Energy: Performing a statistically valid power

quality energy survey requires the capture of a set of basic data over an extended period

of time. The PowerVisa is designed to facilitate long-term monitoring by collecting

min/max/avg data at each pre-determined interval in order to perform post-process

harmonic and other events analysis. It is also designed to be left unattended in the field,

recording statistically representative data for long-term analysis. Using the Dranetz-

BMI lockable portable case option or other available enclosures, power quality studies

can be carried out in harsh weather environments.

Continuous Data Logging, Demand, Energy: This logs the rms and power values once

per second for totally gapless logging. Cyclic triggers are disabled. No waveforms are

recorded in this monitoring mode.

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