Realwear has contracted with Kinectrics to perform arc-flash testing of the HMT-1 to help determine suitability for the electrical generation, transmission, construction and maintenance industries.
Kinectrics tested the HMT-1 in their lab, following the ASTM F2621-12, Standard Practice for Determining Response Characteristics and Design Integrity of Arc Rated Finished Products in an Electric Arc Exposure. Kinectrics’ Quality Management System is registered to ISO 9001:2008
ASTM, American Society for Testing and Materials, is an international company which produces voluntary consensus, and de-facto industry standards related to product quality, health and safety for many industries. Those standards are used in 140 countries.
The testing involved exposing the HMT-1 to an open air arc at 8 kA, with a varied duration in order to attain a target energy exposure level (20-25 cal/cm²). That target level is a severe event that an electrical worker could be realistically exposed to during routine work in the field.
The following test circuit parameters and conditions were used.
- Electric arc current: 8 kA rms ± 10%, 60 Hz
- Open circuit voltage: 2500 V rms ± 10%, 60 Hz
- Nominal Heat Flux Density: 2100 kW/m2 (50 cal/cm.·s)
- Arc duration: Varied to obtain required incident energy
- Electrode gap: 305 mm (12 inches)
- Distance from head form to center of electrode: 305 mm (12 inches)
Based on the tests performed and results and observations recorded at the time of testing, the RealWear Head-Mounted Tablet, HMT-1, exhibited good overall performance when exposed to electrical arcs and did not exhibit any signs of melting, dripping or ignition at any of the observed incident energy levels (20-27.6 ca/cm.).
The results of these tests were to determine the material response characteristics and this device can be considered “Arc Tested” but should not be considered an Arc Rating complying with ASTM F2621-12, ASTM F2178-17 or ASTM F1959-14e1. Additional compliance responsibilities may be imposed by other occupational and health requirements depending on the application.
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RealWear®, the global leader in knowledge transfer solutions for industrial workers, introduced the HMT-1 rugged Android tablet in 2017. This hands-free wearable ruggedized tablet is redefining the nature of work in the 21st century by giving companies a safer, faster, better way to train, coach, and upskill their global teams. In 2018 RealWear introduced the world’s first commercially available enterprise wearable approved for ATEX Zone 1 C1 / D1 environments, the intrinsically safe HMT-1Z1. Together with our comprehensive set of solutions and services, HMT-1 and HMT-1Z1 enable every industrial company to embrace digital transformation and improve knowledge transfer in any environment.
HMT-1 is IP66 waterproof, dust-proof, and drop-proof onto concrete from a height of 2 meters. RealWear’s unmatched noise cancellation technology filters out ambient noise so that workers can focus on the task at hand. HMT-1 responds to voice commands with 98% accuracy even when ambient noise reaches 95 dBA. Lightweight and built to be worn throughout a full shift, the battery on a RealWear HMT-1 will last a full shift of 9 – 10 hours under normal conditions.
HMT-1Z1 is the intrinsically safe counterpart of the rugged tough tablet HMT-1. HMT-1Z1 is designed for ATEX Zone 1 C1 / D1 environments, so that workers in Oil & Gas facilities, chemical plants and beyond have a way to access the right information at the right time hands-free, all with a few simple voice commands.
RealWear has more than 350 customers worldwide in a wide array of industries ranging from oil and gas, utilities, automotive, and manufacturing. Through its growing ecosystem of over 100 partners, RealWear offers Remote Mentor, Document Navigation, Industrial Internet of Things (IIoT) Visualization, Digital Workflow, and Visual Assist solutions. Companies all around the world use RealWear’s connected worker solutions to optimize maintenance repair and operations (MRO), streamline field services and inspections, and improve workers’ safety by freeing their hands to boost situational awareness. Every day organizations in every sector of industry find new ways to use RealWear’s enterprise wearables to reduce downtime, increase productivity, minimize travel costs, and improve worker safety.
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