High-intensity LEDs transform the voltage test lamp

Published:  06 July, 2016

Martindale Electric, electrical testing, voltage test lamp

The latest generation of Drummond test lamps from Martindale Electric use high-intensity LEDs for live-voltage indication. Using high-intensity LEDs is said to transform the test lamp by enabling the display of discrete voltages over a 360° viewing angle, even in bright light. Four distinctive bands of LED illumination indicate voltages above 50, 100, 200 and 400 V — rather than trying to judge voltage by lamp brightness.

These discrete voltage levels allow accurate identification of potentially lethal voltages and enable electrical professionals to distinguish between 110 V, 230 V and phase-to-phase voltages in a 3-phase system.

There are two versions — the MTL10 and the MTL20. A finger shield protects against accidental contact with a live conductor, and insulated probe tips leave only 4 mm of exposed metal.

For difficult applications where access is limited, the detachable probes can be replaced with right-angles or straight probes from 3 to 13 cm long. These probes can be rotated and locked in place, providing easy access to measurement points in crowded cabinets.

The MTL20 has two test buttons — one on the body of the unit and one on the probe. Depressing both switches at once presents a low impedance to the circuit under test, enabling the test lamp to draw a high current and dissipate phantom voltages — making it easy to differentiate between phantom voltages due to capacitive coupling and true hazardous voltages.

These voltage testers can be purchased separately or as part of a kit that includes a proving unit and a carry case.

For more information on this story, click here: July 2016, 80

comments powered by Disqus

Search

Welcome

Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.
March 2017: DIGITAL EDITION
ARCHIVE OF DIGITAL EDITIONS

Modern Building services has a group
on Linkedin - join us!

Jobs

  • Estates Project Manager (NHS)

      Working as part of the Hampshire Hospitals NHS Foundation Trust   Estates team, you will be responsible for developing capital projects from feasibility studies, through to delivery of refurbishments, backlog maintenance schemes and new builds. .........

more jobs »

Poll

"Is the Building Services industry lagging behind in the implementation of BIM?"



Calendar