Fluke SV225 Stray Voltage Adapter

The Fluke SV225 Stray Voltage Adapter is a specialized tool designed to enhance the accuracy and safety of voltage measurements by effectively eliminating the impact of stray or ghost voltages.


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Fluke SV 225 Stray Voltage Adapter

The Fluke SV225 Stray Voltage Adapter is a specialized tool designed to enhance the accuracy and safety of voltage measurements by effectively eliminating the impact of stray or ghost voltages. This adapter is particularly useful for electricians, technicians, and engineers who work in environments where these spurious voltages occur and can lead to misleading or dangerous readings. Below is a detailed look at the Fluke SV225, including its features, functionality, and applications.

Product Overview

Stray voltages can be a significant issue in both residential and industrial settings, often appearing due to capacitive coupling from nearby live wires, even when the circuit is de-energized. The Fluke SV225 Stray Voltage Adapter addresses this problem by allowing professionals to differentiate between real electrical threats and these harmless ghost voltages.

Key Features and Specifications

  • Elimination of Ghost Voltages: The SV225 is designed to filter out and ignore voltages below a certain threshold, which are typically categorized as stray or ghost voltages. This ensures that measurements reflect true voltage levels.
  • Safety Enhancements: By distinguishing between real and phantom voltages, the adapter helps prevent unnecessary shutdowns or hazardous situations that might arise from misdiagnosed electrical readings.
  • Easy Integration: The adapter can be easily connected to any Fluke multimeter with a standard input. This seamless integration extends the utility of existing equipment without the need for additional, expensive devices.
  • Durable and Reliable: As with all Fluke products, the SV225 is built to last and perform reliably in tough environments. It is robust and designed to withstand regular use in professional settings.

Practical Applications

  • Industrial Electrical Inspections: In industrial plants, the SV225 is used during routine maintenance and safety checks to ensure that all reported voltages are accurate and not results of capacitive coupling from other equipment or wires.
  • Home and Building Inspections: Electricians use the stray voltage adapter when inspecting electrical installations in new homes or buildings to certify that the electrical system is free from any misleading voltages that could affect future diagnostics or repairs.
  • Utility Work: Utility technicians often encounter stray voltages due to the complex networks of cables and equipment. The SV225 helps in identifying true voltages that require attention, enhancing both safety and efficiency.
  • Educational Purposes: In teaching environments, the adapter is used to demonstrate the phenomenon of stray voltages and teach students how to handle and measure electrical circuits accurately.


  • On energized wires, the meter will indicate the real voltage
  • On non-energized circuits the meter will read close to zero (even if there are stray voltages)
  • It can be used with all modern meters with standard input spacing
  • Allows for discharge of residual voltage from capacitors up to 1000 V
  • Rated CAT III 1000V, CAT IV 600 V
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Fluke Corporation

Since its founding in 1948, Fluke has helped define and grow a unique technology market, providing testing and troubleshooting capabilities that have grown to mission critical status in manufacturing and service industries. Every new manufacturing plant, office, hospital, or facility built today represents another potential customer for Fluke products. From industrial electronic installation, maintenance and service, to precision measurement and quality control, Fluke tools help keep business and industry around the globe up and running. Typical customers and users include technicians, engineers, metrologists, medical-device manufacturers, and computer network professionals — people who stake their reputations on their tools, and use tools to help extend their personal power and abilities.