DV Power CVA500: Current & Voltage Transformer Analyzer
ProgUSA distributes the DV Power CVA500 instrument transformer analyzer with full U.S.-based support, training, and service. The CVA500 is a single instrument for testing current transformers (CTs), inductive voltage transformers (VTs/PTs), and capacitive voltage transformers (CVTs).
For utilities and service providers, instrument transformers sit at the heart of every metering and protection scheme. Verifying their performance is what keeps revenue metering accurate and protection relays operating correctly.
Why Instrument Transformer Testing Matters
CTs and VTs translate high primary currents and voltages down to the low, standardized signals that meters and relays depend on. If a transformer drifts outside its accuracy class, metering revenue is affected and protection may fail to operate as designed.
Testing at commissioning and during routine maintenance confirms ratio, polarity, and accuracy before a transformer is placed in service, and tracks its condition over time.
CVA500 Capabilities
The CVA500 performs the full range of instrument transformer tests: turns ratio, saturation (knee point), burden, demagnetization, winding resistance, and insulation resistance. Polarity is verified during the turns ratio test from the measured phase shift, and the instrument calculates phase error as part of its accuracy class assessment. For the turns ratio test, the CVA500 can output up to 2 kV AC, helping deliver reliable, accurate results even on large CVTs. A VDC output supports insulation and winding resistance measurement.
Its one-time connection is a key field advantage. The CVA500 connects to all CT measurement terminals at once, including the primary side, up to five secondary taps, and burden. From that single connection, it then performs ratio, saturation, burden, and winding resistance tests across all five taps automatically, with no cable reconnection between taps.
For CTs, the instrument calculates ratio and phase errors across eight primary currents and four burdens, then automatically determines whether the CT falls within its specified accuracy class. Insulation resistance can be measured between any combination of primary, secondary, ground, and additional cores on multi-core units.
Applications and Standards
Utilities and service providers use the CVA500 for metering accuracy verification, protection CT assessment, and instrument transformer commissioning, along with routine maintenance and troubleshooting.
The instrument performs evaluations in accordance with IEEE C57.13 and IEC 61869-2, automatically calculating ratio error, phase error, and composite error, giving crews defensible, standards-based results for both revenue metering and protection applications.
ProgUSA Support
ProgUSA represents the full DV Power transformer test line throughout the United States.
Equipment Selection
We help utilities match the CVA500 to their instrument transformer types and testing program.
Training
We provide operator training on test procedures, software, and result interpretation.
U.S.-Based Service
Our Florida service center coordinates calibration and repair for DV Power instruments.
Demonstrations
On-site demonstrations let crews evaluate the CVA500 with their own equipment and field conditions.
Learn More
The DV Power CVA500 is available through ProgUSA with full technical support, training, and service coordination.
Contact us for product specifications, demonstration scheduling, or application guidance.
ProgUSA | www.progusa.net | info@progusa.net | +1 407 332 8678