1.1 Product Overview
11
The PW3335 is a power meter that can be used to perform power measurements for single-phase devices
such as battery-driven devices and household electronics.
Thanks to its broad selection of current ranges from 1 mA to 20 A (with an effective measurement range of
10 A to 30 A), it comprises a single-device solution for measuring parameters ranging from standby power
consumption to power consumption during normal operation of devices such as household electronics.
• Accuracy is guaranteed for currents of up to 30 A with direct input.
• (The maximum input current is 30 A, ±100 A peak.)
• An optional current sensor can be used to measure currents in excess of 30 A. (p.100)
• The instrument delivers a high fundamental accuracy of ±0.15% rdg. (at less than 50% of range, ±0.1% rdg.
±0.05% f.s.).
• Over a wide band from DC and 0.1 Hz to 100 kHz, the instrument covers not only the fundamental fre-
quency band for inverter-driven equipment, but also the carrier frequency band.
• Power factor effects are low at ±0.1%f.s. or less (with a internal circuit voltage/current phase difference of
±0.0573°), allowing high-accuracy measurement of active power during low power-factor operation, for
example during no-load testing of transformers and motors.
• The instrument can perform harmonic measurement compliant with the IEC 61000-4-7:2002 international
standard on harmonic measurement methods.
• You can set an upper limit for the analyzed order from the 2nd to 50th order according to the harmonic
measurement standard in use.
• Since processing for functions such as AC+DC (RMS), AC+DC Umn (voltage average value rectified RMS
equivalent), DC (DC component), AC (AC component), FND (fundamental wave component), and har-
monic measurement as well as integration measurement can be performed internally and in parallel, it is
possible to obtain simultaneous measured values simply by switching the display.
Overview Chapter 1
1.1 Product Overview
1.2 Features
Guaranteed accuracy up to 30 A with direct input
High-accuracy, wide-band performance
Standard harmonic measurement function compliant with
IEC 61000-4-7:2002 (p.71)
Extensive measurement functionality, standard
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