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
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.
