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Live Line Test

  • Working voltage 1100V DC max
  • Threshold voltage 200VAC/300VDC
  • Indicator 3 ultra-bright red LEDs


The Seaward LLT live line tester is a voltage detector ideal for live line testing on systems up to 1100V DC, and is encapsulated in a high impact rugged enclosure with high-visibility cable. The unit is fitted with high-intensity red LED indicators and a polarizing filter making it clearly visible, even in direct sunlight.

Designed specifically for live line applications, the LLT high voltage indicator ensures conductor rails have been isolated from the power supply before maintenance or inspection work commences on rail track systems.

PH3-LLT proving unit also available.

The LLT and proving unit are approved by NetworkRail -Certificate of Acceptance No. PA05/03345.


Technical specification

LLT Live Line Voltage Detector

Working Voltage  1100V dc max
Threshold Voltage 200Vac/300Vdc
Circuit current <10mA
Indicator 3 ultra-bright red LED
Compliance BS EN61243-3

Carrying case with shoulder strap for LLT plus the PH3-LLT

Part numbers

LLT Live line tester 114A922
PH3-LLT Proving unit 112A925
Carry case 308A955


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