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Voltage Transformers (Space-constrained Applications) Image 1

Voltage Transformers (Space-constrained Applications)

Applications

  • For applications that require high accuracy and small phase error
  • Energy monitoring devices

Features

  • Low cost
  • More than 6 sizes
  • Toroidal nickel alloy cores available
Download Datasheet

Specifications

  • Exterior material
    PBT (UL flame retardant rating 94-V0)
  • Interior insulation
    epoxy
  • Isolation voltage
    2500V for 1 minute
  • Dielectric resistance
    1000 MΩ @ 500 Vdc
  • Surge withstand (optional)
    5000V（1.2/50μs standard shock wave)
  • Operating temperature
    -40 to +85℃
  • Frequency
    50 to 400 Hz
  • Accuracy class
    current transformers class 0.2 (as defined in IEC 61869-2 Part 2)
  • Environment
    RoHS compliant

Product Overview

Voltage transformers are produced by the company Yuanxing Electronics, which is a recognized leader among voltage transformers manufacturers. Yuanxing’s mini voltage transformer product line has been specifically designed for use in high-density, electronic environments and is designed as a solution for B2B manufacturers that require high quality and reliable signal transformation (high accuracy) in limited footprint areas (e.g., space-constrained environments), such as smart meters and compact energy monitoring devices.

As high-performance voltage measurement transformers, these units offer best-in-class accuracy in signal transformation using advanced encapsulation technology to achieve a Class of Precision 0.1 or 0.2 (as outlined by IEC 61869-3); thereby providing phase stability and linearity required by professionals who utilize precision instruments. While the mini voltage transformer series is small, it has been designed to offer a robust 2500V isolation voltage for one minute and a dielectric resistance rating of 1000 MΩ @ 500 Vdc. These features provide an extra layer of safety and ensure the integrity of the signal.

This voltage transformer series has been designed for surface mount applications to make it easy for manufacturers to make the proper electrical connections to the device. Additionally, the mounting pattern is non-symmetrical to help prevent incorrect assembly during mass production. In contrast to a typical medium voltage potential transformer, which is designed for power distribution, Yuanxing’s space-constrained potential transformers are designed to perform precise secondary sensing as the electrical load varies. The operating frequency range of this component is from 50 Hz to 400 Hz, and the maximum rated load resistance is 100kΩ; therefore, it provides consistent performance under different electrical load conditions.

Image Part Number Rated Input / Output Frequency (Hz) Secondary Burden Resistance (Ω) Accuracy Class Dimension (mm)
TV31B 1mA/1mA or 2mA/2mA 50 to 400 ≤500 0.1 or 0.2 L-W-H
19-17.0-18.3
TV31D 2mA/2mA 50 to 400 ≤150 0.1 or 0.2 L-W-H
19.5-10.5-18.0
TAV61 6mA/6mA 50 to 400 ≤400 0.2 L-W-H
26.5-25.5-15
TV31E 2mA/2mA 50 to 400 ≤150 0.1 or 0.2 L-W-H
18.8-16.2-13.4
TV31F 2mA/2mA 50 to 400 ≤200 0.1 or 0.2 L-W-H
22.0-12.0-19.0
TV33 3mA/0.75mA 50 to 400 ≤1000 0.1 or 0.2 L-W-H
28.0-20.0-28.0

Frequently Asked Questions

Current transformers/sensors, voltage transformers/sensors, and Rogowski coils from Yuanxing are widely adopted across the following industries:
Electric Power Grids, Renewable Energy, Rail Transit, Industrial Automation & Motor Control, Aerospace, Data Centers, Telecommunications.

Yes. Our in-house R&D and engineering teams can support customized current/voltage transformers, Rogowski coil and current/voltage sensor designs, including special ratios, form factors, output signals, and mounting requirements.

Yes. We can supply detailed product specifications, datasheets, and wiring/application notes for each standard or customized configuration.

Yes. With over 20 years of export experience, we serve customers worldwide and provide full sales and logistics support for both small-quantity orders and large-volume projects.

Please submit an inquiry via email or our online contact form. For selected products, we can provide free samples; shipping will be arranged using your courier account (e.g., DHL / FedEx / UPS).