html{display:none} VIN Voltage Indicators | Schweitzer Engineering Laboratories


Voltage Indicators

Voltage Indicators (VINs) are typically installed in transformers, switchgear, and other underground distribution enclosures. They are easily installed on the test point of a 200 A elbow or a 600 A T-body. VINs are line-powered and indicate the presence of voltage at or above 2 kV phase to ground by flashing a brilliant neon lamp. The initial flash occurs 30 seconds after installation and the flash rate is proportional to the voltage present— the higher the voltage level, the faster the flash rate.

The VINs circuitry is epoxy-encapsulated and housed within an EPDM rubber boot, making the VIN suitable for application in underground environments. VINs are a quick and economical way to add voltage detection to underground systems.

Starting At

$37 USD

Request a Follow-Up


Indicates the presence of system voltage to ensure safety.

Flashing neon bulb indicates that voltage is present. Faster flash rate indicates higher voltage.

Install in pad-mounted transformers, switchgear, and other underground distribution enclosures with basic insulating plugs or capacitive test points.

Applicable on most brands of test point elbows. Both 200 A and 600 A models available.

Compact, lightweight, and durable design makes the VIN easy to install.

Three-phase version also available. Please consult SEL.

Power SourceTest Point Elbow Terminator Voltage
Primary Voltage (L-L)2 kV to 35 kV
Flash Response TimeProportional to Voltage
Elbow Style200 A or 600 A Elbows With Test Points or Basic Insulating Plugs
Housing MaterialConductive EPDM Rubber
Temperature Range–40° to +85°C
Approximate Weight100 to 180 g (0.22 to 0.40 lbs)


Documents sorted by newest first.