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3-1
Chapter 3
Features Of Fluke 434/435
Introduction
The Analyzer offers an extensive and powerful set of measurements to check power
distribution systems. Some give a general impression of power system performance.
Others are used to investigate specific details. This chapter gives an overview on how to
perform measurements in a logical order.
The measuring modes are described in detail in Chapter 7 to 18. Each measuring mode is
explained in a separate chapter.
Fluke 435 has additional features such as Mains Signaling, Logging, 0.1 % voltage
input accuracy acc. to IEC61000-4-30 2003 Class A, extra memory to store Logging
Data, Power Log software, flexible current clamps, and a heavy duty trolley style
case.
In Fluke 434 the functions Mains Signaling and Logging can be installed optionally.
If not installed, they show up in the menu in grey color.
General Measurements
To check if voltage leads and current clamps are connected correctly, use Scope
Waveform and Scope Phasor. The clamps are marked with an arrow to facilitate proper
signal polarity. Chapter 6 Input Connections explains how to make connections.
To get a general impression of the quality of a power system use MONITOR. The
MONITOR key displays a screen with Bar Graphs that show quality aspects of the phase
voltages. A Bar Graph changes from green to red if the related aspect does not meet the
limits. Up to 7 different sets of limits can be chosen for Fluke 435: a number of them are
user programmable. One of these sets are the limits according to the EN50160 norm. For
each quality aspect submenus with detailed information are attainable via the function
keys F1 ... F5.
Numerical data is shown by Volts/Amps/Hertz. For this press the MENU key. Then
select Volts/Amps/Hertz and press F5 – OK to display a Meter screen with the present
values of voltages (rms and peak), currents (rms and peak), frequency and Crest Factors
per phase. Press F5 – TREND so display the course over time of these values.