Tektronix PA4000 Power Analyzer

Available measurements

VRMS - Volts RMS	VDF – Volts Distortion Factor
ARMS - Amps RMS	VTIF – Volts Telephone Influence Factor
WATT – Watts	ATHD – Amps Total Harmonic Distortion
VA – Volt-Amps	ADF – Amps Distortion Factor
VAR – Volt-Amps Reactive	ATIF – Amps Telephone Influence Factor
FRQ – Frequency	VF – Fundamental Volts rms
PF – Power factor	AF – Fundamental Amps rms
VPK+ – Volts peak (positive)	IMP – Impedance
VPK- – Volts peak (negative)	RES – Resistance
APK+ – Amps peak (positive)	REA – Reactance
APK- – Amps peak (negative)	HR – Integrator time
VDC – Volts DC	WHR – Watt Hours
ADC – Amps DC	VAH – VA Hours
VRMN – Volts rectified mean	VRH – VAr Hours
ARMN – Amps rectified mean	AHR – Amp Hours
VCF – Voltage crest factor	WAV – Average Watts
ACF – Current crest factor	PFAV – Average Power Factor
VTHD – Volts Total Harmonic Distortion	CVAR – Correction VArs

 

 

Voltage and current ranges

Voltage Ranges

2000 V_peak, 1000 V_peak, 500 V_peak, 200 V_peak, 100 V_peak, 50 V_peak, 20 V_peak, 5 V_peak, 2 V_peak

Current Ranges (30 A Shunt)

200 A_peak, 100 A_peak, 50 A_peak, 20 A_peak, 10 A_peak, 5 A_peak, 2 A_peak, 1 A_peak, 0.5 A_peak, 0.2 A_peak, 0.1 A_peak

Current Ranges (1 A Shunt)

5 A_peak, 2 A_peak, 1 A_peak, 0.5 A_peak, 0.2 A_peak, 0.1 A_peak, 0.25 A_peak, 0.0125 A_peak, 0.005 A_peak, 0.0025 A_peak

Current Ranges (External Shunt)

3 V_peak, 1.5 V_peak, 0.75 V_peak, 0.3 V_peak, 0.15 V_peak, 0.075 V_peak, 0.03 V_peak, 0.015 V_peak, 0.0075 V_peak

Measurement accuracy – voltage and current

Voltage Accuracy, V_RMS ( 45 Hz – 850 Hz )

± 0.04% of Reading ± 0.04% of Range ± 0.02 V

Voltage Accuracy, V_RMS ( 10 Hz – 45 Hz, 850 Hz – 1 MHz )

± 0.05% of Reading ± 0.05% of Range ± (0.02*F)% of Reading ± 0.02 V (typical)

Voltage Accuracy, DC

± 0.05% of Reading ± 0.1% of Range ± 0.05 V

Voltage Accuracy, V_rmn

± 0.2% of Reading ± 0.1% of Range ± 0.1 V

Effect of Common Mode (Typical)

1000 V, 60 Hz < 10 mV

100 V, 100 kHz < 50 mV

Current Accuracy, A_RMS ( 45 Hz – 850 Hz )

± 0.04% of Reading ± 0.04% of Range ± (20 µV/Z_ext)

Current Accuracy, A_RMS ( 10 Hz – 45 Hz, 850 Hz – 1 MHz )

± 0.05% of Reading ± 0.05% of Range ± (0.02*F)% of Reading ± (20 µV/Z_ext) (typical)

Current Accuracy, DC

± 0.05% of Reading ± 0.1% of Range ± (50 µV/Z_ext)

Current Accuracy, A_RMS

± 0.2% of Reading ± 0.1% of Range ± (100 µV/Z_ext)

Measurement accuracy – power

Watts Accuracy

(V_RMS acc. x A_RMS x PF) ± (A_RMS acc. x V_RMS x PF) ± (V_RMS x A_RMS x cos θ -cos { θ± (Vh1_ph.err. ± Ah1_ph.err.)})

VA Accuracy

(V_RMS acc. x A_RMS) ± (A_RMS acc. x V_RMS )

VAR Accuracy

PF Accuracy

Cos θ -cos [ θ± ( Vh1 _ph.err± Ah1 _ph.err)] ± 0.001

Measurement accuracy – Harmonic magnitude and phase ¹

Voltage Harmonics (45 Hz – 850 Hz) (Typical for 10 Hz to 45 Hz and 850 Hz to 1 MHz)

± 0.08% of Reading ± 0.08% of Range ± (0.02*F)% of Reading ± 0.02 V

Voltage Harmonics Phase (45 Hz – 850 Hz) (Typical for 10 Hz to 45 Hz and 850 Hz to 1 MHz)

0.025 ± [ 0.005 * V_range / V_reading )] ± (0.1 / V_range) ± ( 0.002 *F )

Current Harmonics (45 Hz – 850 Hz) (Typical for 10 Hz to 45 Hz and 850 Hz to 1 MHz)

± 0.08% of Reading ± 0.08% of Range ± (0.02*F)% of Reading ± (20 µV /Z_ext)

Current Harmonics Phase (45 Hz – 850 Hz) (Typical for 10 Hz to 45 Hz and 850 Hz to 1 MHz)

0.025 ± [0.005 * A_range / A_reading)] ± (0.001 / A_{range *} Z_ext)) ± (0.002 *F)

¹F is the frequency measured in kHz. In the case of harmonics, F is the harmonic frequency.

Z_ext is the shunt impedance (0.6 Ω for 1 A shunt, 9.375 mΩ for 30 A shunt). It is assumed that the waveform measured is a sine wave.

Measurement conditions during calibration: Instrument default settings unless otherwise stated, Sine waves applied to V and I inputs, 30 minute warm-up, Temperature 23 °C ±5 °C.