Canadian Electrical Industry News Week

Mar 18, 2019

Encapsulated TransformersThere are many requirements to meet when specifying transformers, such as basic performance parameters that include kVA, low and high voltage ratings, line frequency, etc. One must also consider the environment in which the transformer will be used. It is common in many industrial locations to find hazardous materials such as flammable liquids, gasses, vapors or combustible dusts in sufficient concentration to produce an explosion or fire. Electrical equipment installed in such a classified location must be designed, and tested, to minimize the risk of an explosion. These specially designed products ensure that sufficient energy is not available to ignite the specific hazardous material(s) present in the classified location. Electrical equipment rated for use in hazardous locations is typically more expensive, but the higher performance trade-off makes them valuable.

Simply providing a transformer to install in a hazardous location area is not enough; one must also consider other critical application criteria such as available short circuit current (impacted by transformer impedance), ease of installation and accessibility, as well as ongoing maintenance cost.

Regulations related to hazardous locations have been formulated by the International Electrotechnical Commission (IEC), and they use a Zone classification system. In North America, both the US National Electrical Code (NEC) and the Canadian Electrical Code (CEC) now also recognise the use of a Zone System for classification of hazardous areas.

HPS Titan N

HPS Titan N is designed in accordance to North American hazardous location regulations. The product has been tested to ensure the required uniform safety standards for electrical equipment used in hazardous locations have been met.
HPS Titan® N is currently approved for Class 1, Division 2, Groups A, B, C, D and Class I, Zone 2, Group IIC, T3 Hazardous Locations as defined by ANSI/ISA 12.12.10, UL 5085-1 and UL5085-2. IECex approval is in progress and will be available in 2019.

Extensive Temperature Range Flexibility

One of the most important considerations in a hazardous area is the temperature rating of the electrical equipment. The surface temperature of any parts that may be exposed to the hazardous atmosphere must be tested so that it does not exceed 80% of the auto-ignition temperature of the specific gas or vapor in the area where the equipment is intended to be installed. The HPS Titan® N standard designs are flexible, and can be installed in locations with a wide range of ambient and application temperature performance requirements (exact temperature performance may vary by kVA in some cases).

In 40°C ambient temperature:
o T3C temperature performance is available with 80°C and 95°C rise units
o T3A temperature performance is achieved with 115°C units

In 50°C ambient temperature:
o T3C temperature performance is available with 80°C rise units
o T3A temperature performance is achieved with 95°C and 115°C rise units

The broad temperature performance capabilities of the Titan N makes this transformer adaptable to a variety of applications.

Rugged Construction

HPS Titan® N has a core and coil that is completely encapsulated in epoxy and silica. This construction physically separates and isolates electrical parts, and helps reduce surface temperature. This minimizes the possibility that it can ignite hazardous materials within the surrounding area. Specialized areas, such as an offshore location, are addressed with enclosures made from more durable stainless steel.

Prevent Critical Electrical Conditions

HPS Titan N has an innovative design that limits electrical inrush and short circuit currents, minimizes the impact of voltage spikes and maintains the external surface temperature at safe levels under bothnormal operation and fault conditions. The impedance of a transformer determines the maximum current during a short circuit fault. The lower the fault current, the lower the interrupting capacity of a circuit breaker or fuse employed to protect the primary connection of the transformer. HPS Titan N has higher impedance levels to help lower fault current levels, requiring less expensive lower AIC rated circuit breakers or fuses.

Inrush current at energization is a source of much frustration for field operators when it immediately trips a circuit breaker or blows a fuse. Was it genuine fault? Is it risky to energise again? Is there something else at play? Determining these answers before re-energizing the equipment takes time and costs money. Titan N reduces the potential for the nuisance tripping of circuit breakers or blown fuses with significantly lower energization inrush currents Mother Nature is unpredictable and has it own rules. A lightening strike or other utility power line disturbances can cause voltage spikes. This can cause transformer and other equipment damage. With a standard 10kV BIL protection HPS Titan ® N can minimize the impact of voltage spikes.

Lower Installation & Maintenance Costs 

There are many hidden costs in the installation process of a transformer. When accessing the wiring compartment of transformer, you need to account for time necessary to physically open the panel and create proper cable connections. With this in mind, HPS has designed the enclosure with a front opening removable hinged door with simple, secure screw clips. These adjustable screw clips provide labour savings and fast access to the wiring compartment. Their captive design also prevents their loss when opening the compartment. The wiring compartment of HPS Titan N is large and allows for easier cable routing as well as bigger wire bending radius. If periodic maintenance is required, it is quite easy to gain access to the wiring compartment.

HPS Titan N easily adapts to various applications instead of the customer altering the application to fit with the transformer. Titan ® N will be available for sale on January 9th, 2019.

For more information visit https://www.hammondpowersolutions.com/product/hpstitann/

Changing Scene

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SaskatchewanThe Government of Saskatchewan is engaging the public to help ensure health and safety legislation meets the needs of employers and workers in the province. From August 16 to October 18, 2021 citizens can provide input on part III (occupational health and safety) of The Saskatchewan Employment Act.

"Our province has a plan for growth that includes ensuring we have safe and healthy workplaces" Labour Relations and Workplace Safety Minister Don Morgan said. 

 


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Canadian Electrical Contractor Discussion Group: Can You Count the Deficiencies?

EIN CECD 400Have you ever been called to fix the work of a 'handyman'?

"Was supposedly done by a"certified ' electrician....told the homeowner that he got a $266 permit....no record at TSBC. Can you count the deficiencies?"

"There is a second panel change in the triplex also.......even more deficiencies. Think the guy was a glorified handyman. Ones not obvious: 240 BB heat hooked up 120....drier on 2p20....range on 2p50....water heater fed with 2c14 Bx on 2p15."

Go HERE to join the discussion

 


 



 

Desert HomeA combination of stunning design, a spectacular desert setting, and exceptional architectural lighting is a winning combination for a private residence just outside of St. George, Utah. JRC Lighting was hired by the homeowner to create the lighting concept for the showpiece home.

"The house has an almost industrial look to it, with a focus on clean lines," said Kevin Meredith, principal at JRC Lighting. "My goal was to keep the lighting understated and let the architecture, and the views, sell themselves.”

 

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David GordonBy David Gordon

This summer EiKO is launching its Z10 product offering. I know, what is Z10 other than the sports cars some of us remember (’69 Z10 Camaro or a 2009 BMW Z10, but let’s go with an American muscle car!)?

So, since it seemed like a sports car “name” (since sports car naming seems to be in numbers), we reached out to Sarah Eastman, VP Marketing for EiKO, who shared that Z10 is an alliance of manufacturers who have developed standards to support an easier lighting controls process within fixtures (remember, I’m not a product maven).
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Product News

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Milwaukee M12 Cable StripperM12™ Cable Stripper Kit for Cu THHN / XHHW aims to improve the cable stripping experience. With no exposed blades, the cordless cable stripper provides safer stripping than with a knife. The cable stripper's compact, right-angle design allows you to maneuver it more easily in tight spaces with less strain on the wrist. The bushing design and adjustable depth gauge deliver cleaner, more accurate and consistent strips across all sizes.

The cable jacket stripping tool is not only compatible with all MILWAUKEE® bushings but is also compatible with competitive quick-change bushings.

 

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Incoplas HybridThe Incoplas® LED Hybrid is a durable multi-purpose and corrosion-resistant LED lighting solution that can be used in heavy industrial applications where hazardous location lighting is required.

Certifications

Class 1:

Flammable Gases and Liquids

Division 2: The hazardous atmosphere is only available infrequently (i.e. in case of spill).

 

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EarthTronics 25-Watt Emergency Driver for Linear HighbayEarthTronics LED emergency drivers regulate the power supplied to the LED fixture so that it can operate as a light source in the event of a power failure. The purpose of emergency lighting is to ensure that lighting is provided promptly, automatically and for a suitable time when the normal power supply fails.

This insures that people within the building can evacuate safely in the event of an emergency. All EarthTronics emergency drivers meet specific UL, CSA and NFPA requirements. Always consult local code requirements when specifying emergency lighting products.

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Peers & Profiles

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EngWorksBy Blake Marchand

EngWorks was formed in 2004 as an electrical engineering and consulting firm by Allan Bozek, “After a short time we realized there was a niche in hazardous locations, in particular in hazardous area classification design requirements for various facilities. And also helping people understand just how the Canadian Electrical Code applies to hazardous locations.”

Given the complexity of hazardous locations, Bozek saw a need for education while working in the field and began developing training courses designed.

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Eric TordjmanBy Blake Marchand

Headquartered in Concord, Ontario, Mercury Lighting services national retail, multi-residential/commercial property management, energy service companies (ESCO), and auto dealerships. “From design to specifications, we offer turn-key services that go beyond the typical distributor model,” explained Mercury Lighting Vice President, Eric Tordjman. Their value-added approach leverages well-established supplier relations to help clients find a lighting solution that suits their needs.

“How we differentiate ourselves is we’re lighting specific, we do very little in the way of electrical, and really emphasizing our expertise towards solutions selling...

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