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Dataforth Introduces Next Generation High Voltage Attenuator System

Press Release

Release Date: Oct 23 2023

Dataforth Corporation is releasing the next generation of its Signal Conditioning Modular High Voltage Attenuator System (SCMHVAS). Highlights of the new system include:

  • Improved housing and connectors
  • Expanded voltage range to +/-2000V aka 4000V peak-to-peak (all other electrical specifications remain the same)
  • Backwards compatibility with first generation modules and existing backpanels

“These highlights of our new second generation system significantly expand its usability while maintaining the same level of excellence and reliability our customers expect from Dataforth products,” says Georg Haubner, Dataforth Vice President of Marketing and Sales.

The SCMHVAS (Signal Conditioning Modular High Voltage Attenuator System) is an analog signal conditioning system designed to safely monitor and accurately measure voltage potentials up to 1414VAC (4000V peak-to-peak). These high potential voltages are typically found in – but are not limited to – industrial applications such as battery measurement and monitoring applications, induction heaters, electric-motor drive controllers, and other high voltage applications. The system reduces the input signal to a level suitable for interface to data acquisition systems, while at the same time providing analog filtering characteristics and 1500Vrms isolation.

For each channel of analog input, an attenuator module, SCMHVAS-Mxxxx, pre-conditions the signal which is then filtered, isolated, and converted to a high-level voltage output using an SCM5B30-07 or SCM5B40-07 module. The SCM5B40-07 module with a 10kHz bandwidth is recommended for common 50/60Hz signals low in harmonics where the user is interested in measuring only AC voltage. The SCM5B30-07 module is used for low frequency AC signals below 4Hz. The attenuator and signal conditioning modules have excellent stability over time and do not require recalibration.

In addition to accepting high voltage signals up to 1414VAC (4000V peak-to-peak), the system features:

  • 1500Vrms Transformer Isolation
  • True 3-Way Isolation
  • Up to 160dB CMR
  • ±0.06% Accuracy
  • Panel or DIN Rail Mounting Options
  • CSA Certification pending
  • CE Compliant
  • ATEX Compliance Pending (-M0100, -M0200, -M0300)

Input signal connections to the SCMHVAS-Mxxxx attenuator module are made using integrated terminal blocks for robust system assembly. For safety purposes, the terminal blocks are inside the shell and can only be accessed from the top. There are no exposed high-voltage points on the SCMHVAS-Mxxxx series modules, SCM5B30-07 or SCM5B40-07 module, or the mounting backpanel.

Applications for the SCMHVAS system include analog signal conditioning/isolation/filtering, high voltage AC/DC measurement, industrial process control, and test & measurement.

Benefits include:

  • Safe Attenuation of High Voltage Signals
  • Protects User Equipment from Lightning and Heavy Equipment Power-Line Voltage
  • Reduces EMC Concerns and Electrical Noise in Measured Signals
  • Convenient System Expansion and Repair
  • Signal Filtering in Noisy Environments
  • Simplifies Sensor Interface and Signal Conditioning Design
  • Isolation of External Sensors
  • Breaks Ground Loops

The SCMHVAS system has two specially designed backpanels for mounting the attenuator and signal conditioning modules. The SCMVAS-PB8 high density, 8-channel backpanel can be panel mounted or DIN rail mounted and provides the conditioned output signal on screw terminal blocks. The SCMVAS-PB16 has 16 channels of analog I/O simultaneously available to high speed data acquisition (ADC) boards through a 26-conductor ribbon cable. Both backpanels can be mounted on the SCMXRK-002 19-inch metal rack, and both are forward compatible and can accommodate both the original SCMVAS-Mxxx modules and the new SCMHVAS-Mxxxx modules.

Dataforth products directly connect to most industrial sensors and protect valuable measurement and control signals and equipment from the dangerous and degrading effects of noise, transient power surges, and other hazards present in industrial environments. Dataforth products are manufactured in the USA and are RoHS 3 compliant. The company operates under an ISO9001:2015 registered and certified Quality Management System.

For additional information, call 800-444-7644 toll-free, email sales@dataforth.com, or visit our website at www.dataforth.com.

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