Field Voltage Source

Three-Phase Voltage Synthesizer (3PVS)

Portable Three-Phase Voltage Source for Field Meter Testing

The TESCO 3PVS Three-Phase Voltage Synthesizer provides a portable, programmable voltage source for meter testing when utility power is unavailable.

It enables utilities to replicate real-world voltage conditions in the field, supporting accurate testing, validation, and commissioning without relying on live system voltage.

SKU: 3PVS Categories: , Tags: , ,
×

Description

In field metering environments, testing can be limited when sites are de-energized or utility voltage is not available. Traditional methods depend on live system voltage, making it difficult to validate meter performance during commissioning, maintenance, or intertie testing scenarios.

The 3PVS addresses this challenge by delivering a portable, isolated, and programmable three-phase voltage source that replicates real-world electrical conditions anywhere in the field. It provides consistent, low-distortion voltage output from 69V to 480V with ±0.02% voltage setting accuracy, enabling reliable meter verification without reliance on grid power.

This makes it especially valuable for intertie testing, where accurate voltage simulation is required to verify bidirectional energy flow and system compliance.

Key Features

  • Portable Three-Phase Voltage Source
    Generates controlled three-phase voltage in field environments
  • High Accuracy Output
    ±0.02% voltage setting accuracy from no load to 100 VA per phase
  • Low Distortion Performance
    Less than 1% total harmonic distortion (THD)
  • Programmable Voltage Range
    69V to 480V AC output
  • Multiple System Topologies Supported
    69/120 WYE, 120/208 WYE, 120/240 DELTA, 277/480 WYE, 240/480 DELTA
  • Digitally Controlled Architecture
    FPGA-driven DAC system with fully isolated Class-D amplifier design
  • Field-Ready Design
    Rugged enclosure with fan cooling and protection features

Applications

The 3PVS is designed for:

  • Meter testing in de-energized environments
  • Intertie and bidirectional energy testing
  • Commissioning and system verification
  • Field meter validation without grid power
  • Maintenance and troubleshooting scenarios

Why Utilities Use the 3PVS

Utilities use the 3PVS to overcome a key limitation in field testing:

Lack of available system voltage

With the 3PVS, they can:

  • Perform meter verification without energizing the site
  • Simulate real-world voltage conditions
  • Ensure standards-compliant testing
  • Validate intertie and distributed energy systems
  • Improve accuracy and reliability in field testing

Specifications

Electrical Specifications

  • Voltage Output: 69V – 480V AC, 100 VA per phase
  • Voltage Accuracy: ±0.02%
  • Harmonic Distortion: <1% THD
  • Frequency: 50/60 Hz
  • Aux Power Input: 85 – 305 VAC
  • Protection: 10A fused

Mechanical & Environmental

  • Operating Temperature: -10°F to 140°F
  • Case Size: 18.2” x 13.9” x 6.7”
  • Weight: 24.8 lbs
  • Fan-cooled, ruggedized for field use
  • Integrated surge protection and grounding

FAQs

When utility voltage is not available, testing can be performed using a portable voltage source that simulates real system conditions. Devices like the TESCO 3PVS provide a controlled three-phase voltage output, allowing accurate meter testing in de-energized environments.

A three-phase voltage synthesizer is used to generate stable, programmable voltage for testing and validation. It allows utilities to replicate real-world electrical conditions for meter verification, commissioning, and system testing.

Intertie testing without grid power is performed using a controlled voltage source that simulates system conditions. Tools like the 3PVS provide consistent voltage output needed to verify bidirectional energy flow and measurement accuracy.

Yes, portable voltage synthesizers are designed to replicate real-world voltage conditions, including multiple system topologies and stable output across varying loads, enabling accurate field testing.

Accurate voltage simulation ensures that meters are tested under conditions that match real-world operation. This is critical for validating performance, ensuring compliance, and verifying system accuracy, especially in commissioning and intertie applications.

Product Documents

Top Best Sellers

Disclaimer:

TESCO Metering reserves the right to modify product designs, specifications, features, and documentation at any time as part of our continuous improvement process. All information is provided “as is” and may change without prior notice. While TESCO® strives for accuracy, completeness, and technical reliability, customers should verify the latest product details before making purchasing or engineering decisions. For confirmation of current specifications or application suitability, please contact TESCO® directly.