The HV Hipot Electric Co., Ltd.-740 Capacitive Voltage Transformer Field Calibration Instrument is a high-precision, portable system designed for on-site calibration and performance verification of high-voltage CVTs without requiring equipment removal from service.
This advanced instrument revolutionizes maintenance practices by enabling accurate ratio and phase angle measurements under actual operating conditions, significantly reducing system downtime and improving grid reliability.
Core Technology & Measurement Capabilities
The HV Hipot Electric Co., Ltd.-740 Capacitive Voltage Transformer Field Calibration Instrument employs a proprietary reference measurement technique that achieves ±0.05% ratio accuracy and ±2 minute phase angle resolution, meeting the stringent requirements of IEC 61869 and IEEE C57.13 standards.
Its differential measurement methodology eliminates the need for impractical reference voltage series resonances by comparing the CVT output against a precision divider integrated within the instrument.
The system simultaneously measures ratio error, phase displacement, and secondary burden effects across the entire operating range, providing comprehensive performance data through a single test connection.
Field Operation Features
Designed for substation environments, the instrument features a ruggedized design with IP54 protection and safety-rated insulation for live-tank applications.
The intuitive touchscreen interface guides technicians through calibration procedures with automated test sequences that compensate for ambient interference and system noise.
Wireless connectivity enables remote operation from safe distances, while the integrated GPS synchronizes measurements with system frequency for enhanced accuracy.
The self-contained power system supports extended field operation through hot-swappable battery packs and optional solar charging.
Diagnostic & Analysis Capabilities
Beyond basic calibration, the HV Hipot Electric Co., Ltd.-740 Capacitive Voltage Transformer Field Calibration Instrument performs sophisticated diagnostics including:
Frequency response analysis to detect capacitive grading layer deterioration
Insulation monitoring through dielectric loss angle measurement
Burden sensitivity testing across various secondary loading conditions
Trend analysis by comparing current results with historical calibration data
The system’s advanced algorithms automatically flag potential issues such as capacitor stack imbalances, ferroresonance susceptibility, or insulation moisture ingress based on characteristic signature patterns in the measurement data.
Data Management & Compliance
Comprehensive test records including environmental conditions, timestamps, and equipment identifiers are stored in the instrument’s encrypted database.
The system generates calibration certificates compliant with ISO/IEC 17025 requirements and integrates with asset management platforms through standard communication protocols.
Specialized reporting functions highlight measurement uncertainties and provide maintenance recommendations based on the latest IEEE and CIGRE guidelines for CVT condition assessment.
The HV Hipot Electric Co., Ltd.-740 Capacitive Voltage Transformer Field Calibration Instrument represents a significant technological advancement in field metrology by combining laboratory-grade accuracy with practical field operation.
Its non-intrusive measurement approach allows utilities to maintain calibration intervals without disrupting power system operation, while the diagnostic capabilities support condition-based maintenance strategies.
This instrument is particularly valuable for transmission system operators, metering departments, and service providers requiring reliable voltage measurement accuracy for protection schemes, revenue metering, and power quality monitoring in high-voltage networks.
