YOKOGAWA WT3002E User Manual

7-38
IM WT3001E-51EN
7.11 Harmonic Measurement Specifications
Item Specifications
Measured source All installed elements
Format PLL synchronization method
Frequency range Fundamental frequency of the PLL source is in the range of 10 Hz to 2600 Hz.
PLL source • Select the voltage or current of each input element (external current sensor range is greater
than or equal to 500 mV) or the external clock (Ext Clk).
• Input level
Greater than or equal to 50% of the measurement range rating when the crest factor is 3
Greater than or equal to 100% of the measurement range rating when the crest factor is 6
• Turn the frequency filter ON when the fundamental frequency is less than or equal to 440 Hz.
Measurement function See the next section.
FFT data length 9000
FFT processing word length 32 bits
Window function Rectangular
Anti-aliasing filter Set using a line filter (5.5 kHz or 50 kHz).
Sample rate (sampling frequency), window width, and upper limit of measured order during PLL synchronization
Fundamental
Frequency of
the PLL Source
(Hz)
Sample Rate
(S/s)
Window Width against
the FFT Data Length
(Frequency of the
Fundamental Wave)
Upper Limit of
the Measured Order
10 to 20 f×3000 3 100
20 to 40 f×1500 6 100
40 to 55 f×900 10 100
55 to 75 f×750 12 100
75 to 150 f×450 20 50
150 to 440 f×360 25 15
440 to 1100 f×150 60 7
1100 to 2600 f×60 150 3
For the specifications of the wide bandwidth harmonic measurement and IEC harmonic
measurement, see chapters 8 and 9.

YOKOGAWA WT3002E Specifications

General

Brand	YOKOGAWA
Model	WT3002E
Category	Measuring Instruments
Language	English