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June 16, 2010

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Voltage detector – Seaward

Electrical safety testing specialist Seaward has developed a live line voltage indicator to ensure safe working on third-rail electrified railway lines and systems.

The LLT two pole voltage detector is said to enable service engineers, maintenance and technical staff to verify that conductor rails have been isolated from the power supply before maintenance or inspection work commences on rail-track systems.

The new unit is designed for the detection of voltages on electrified rail systems above a threshold level of 300V dc, up to a maximum of 1100V dc.

Seaward says features like ultrabright red LEDs and a polarising filter built into the handle section of the tester make the voltage indication clearly visible in all working environments and conditions.

The unit is totally encapsulated in a shock-resistant high-impact rugged enclosure and is IP65 rated, adds the company. The tester is also equipped with PVC hand guards and high-visibility cable.

Also available from the company is a special battery-powered proving unit for self-test proof of the LLT. Described as compact and highly portable, this unit incorporates a neon active indicator for simple and immediate on-site verification of tester functionality. A special carrying case for the LLT and the proving unit is also available.

For more details, e-mail [email protected] or visit

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