Phase Angle Measurement

Phase Angle Measurement

PAV1010A - Precision Phase Angle Voltmeter

The PAV1010A is a high-performance phase angle voltmeter designed for accurate measurement and analysis of electrical parameters such as phase angles, Vrms, fundamentals, harmonics, in-phase, quadrature, and total harmonic distortion (THD). It features a highly sensitive measurement range of 1 mV to 500 Vpk, with 1 uV sensitivity and 0.02° basic accuracy, making it ideal for precision testing applications in Synchro, Resolver, LVDT, and RVDT systems.
Key Features:

Wide Measurement Range: Capable of measuring voltages from 1 mV to 500 Vpk with 1 uV sensitivity.
High Accuracy: 0.02° phase angle accuracy, providing reliable and precise phase measurements.
Broad Frequency Bandwidth: Operates across a frequency range of 5 Hz to 100 kHz, with a maximum bandwidth of 500 kHz.
Complete Set of Measurements: Includes Vrms, phase angles, in-phase, quadrature components, harmonic distortion, ratios, and null meter functionality.
Advanced Connectivity: Supports GPIB/IEEE-488, USB, and Serial interfaces, ensuring easy integration with modern test setups.
LabView Drivers: Compatibility with NI LabView for advanced automation and data processing in laboratory environments.
Upgrade Program: Offers an upgrade path for legacy SD1000 and NAI Model 2000 phase meters, preserving compatibility with existing systems while adding new features and capabilities.

Measurement Capabilities:

The PAV1010A utilizes advanced Discrete Fourier Transform (DFT) algorithms to extract precise measurements, even from small signals buried in noise. It offers simultaneous display of phase angle, in-phase and quadrature components, and total Vrms on a bright multifunction display.
The system is especially suited for applications involving position sensors, including Resolvers, LVDTs, and RVDTs, where it simplifies measurement processes by providing isolated inputs for null, ratio, and gain measurements. These inputs allow for precise nulling and bridging measurements.

Applications:

Position Sensing and Control Systems: Accurate phase measurements for Resolvers, LVDTs, and RVDTs used in aircraft control, navigation systems, and weapon aiming systems.
Transformer Ratio and Phase Tests: Ideal for transformer testing, ensuring accurate ratio and phase measurements.
Wideband Power Analysis: Power factor meters, Cos Phi indicators, and wideband power meters for comprehensive power analysis.
SCR Phase Control: Suitable for phase-controlled systems in industrial applications.
Current Transformer Calibration: Ensures accurate calibration of current transformers and current probes in power transmission systems.
Accelerometer Testing: Precise phase angle measurements for vibration and motion detection.
Military and Aerospace: Especially suited for detonation systems and substation fault testing.

Technical Specifications:
ParameterSpecification
Voltage Range1 mV to 350 Vrms (500 Vpk)
Phase Angle Accuracy0.02° ± 1 digit
Frequency Range5 Hz to 100 kHz (500 kHz bandwidth)
Current Range (Options)0.1 A to 50 A (non-inductive shunts)
Harmonic Rejection80 dB (even and odd harmonics)
THD Measurement± 0.05%
Common Mode Rejection126 dB (0.5 Hz to 999.99 Hz)
Input Impedance2 Mohm, 20 pF
Phase Repeatability± 0.005°
Display Resolution5 digits, 0.001° resolution
Isolation Voltage2000 V (inputs to ground)
Null Meter Sensitivity1 uV with frequency lock
Power Supply110V or 220V AC ± 10%, 50/60 Hz
Operating Temperature0°C to +50°C (best accuracy at 23°C ± 5°C)
Dimensions215 mm x 144 mm x 390 mm
Weight5 kg (6 kg with packaging)

Performance Specifications (Frequency and Phase Angle Measurement):

Frequency RangeVoltage Accuracy (%Rdg+%Rng)Phase Angle Accuracy
0.5 Hz to 100 Hz±0.04% ±0.05%±0.02° ± 1 digit
100 Hz to 2 kHz±0.05% ±0.05%±0.025° ± 0.005°/kHz
2 kHz to 10 kHz±0.08% ±0.08%±0.035° ± 0.005°/kHz
10 kHz to 100 kHz±0.2% ±0.2%±0.04° ± 0.005°/kHz
100 kHz to 200 kHz±0.75% ±0.75%±0.25° ± 0.005°/kHz
Upgrade and Calibration:

The PAV1010A offers an upgrade program for military and OEM users, converting the legacy SD1000 phase angle meter to the full-featured PAV1010A model. This ensures compatibility with existing in-house computer systems, documentation, and physical form factors while enhancing measurement capabilities.
All measurements with the PAV1010A are traceable to international standards through organizations such as NIST (USA) and UKAS (UK). A certificate of conformance is available, meeting the requirements of IEC17025, ISO9001, and other global standards. Independent third-party certification is also supported for customers requiring additional verification of measurement accuracy.

Optional Accessories:

Non-Inductive Shunt Options: Provides low-phase-shift current measurement capability for applications requiring phase measurement between voltage and current.
PAVLAB Software: Advanced LabView-compatible software for control and automation.
Wi-Fi Bridging: Optional Wi-Fi connection for remote operation and data logging.