Answer: A true isolated ground is not connected to any ground that can ever carry fault current from unrelated parts of the electrical system. It is best to run it directly to grounded building structural steel, an underground metal water pipe, or a separate grounding electrode from the building electrical service as described in Article […]
Read PostAuthor: Kele Inc
Temperature Sensor Curve ID Numbers
Need help figuring out what type sensor you need for your automation system? This handy temperature curve chart might help. If not, give Kele a call! Sensor Type Temperature Sensor Description Typical Sensor User 3 10,000Ω @ 77°F, Type III material AET, American Automatrix, Andover, Carrier, Delta, Invensys, Teletrol, York 21 2252Ω @ […]
Read PostTime Delay Relay Functions Explained
Understanding the differences between various time delay relay operations such as On-Delay or Interval can be a bit confusing. These simple diagrams may make it easier to visualize what’s happening during the timer operation(s). At Kele, our goal is to make product selection and usage as easy as […]
Read PostExtend Your Reach with the ST-A Series by Precon
Kele’s Precon brand has a sensor solution for ALL your application needs, even the odd ones! Job site situation #1: You need a temperature sensor for your tank or cooling tower sump, but they don’t make one long enough. Special ordering one seems daunting. What if it doesn’t work out and you can’t send it back? […]
Read PostIs Saving Energy Really that Hard to do? Apparently it is for Some?
As many of us have been told for years, programmable thermostats are worth their weight in gold when it comes to energy savings. Well, maybe not gold these days, but you get the point. According to the Department of Energy, heating and cooling costs are one of the largest expenses associated with commercial buildings. Savings from using […]
Read PostGreen Buildings need Clean Electrical Power for Sustainability
Major changes are taking place in the United States as we all move forward to reduced energy consumption and utilization of renewable energy sources in our homes, offices, campus environments, and factories. As new technology becomes available with ever increasing returns on investment many owners are ready to become part of the “Green Movement” that […]
Read PostKele Services
Often times when people think of Kele they think of our huge product selection and availability. It’s true—not only does Kele provide nearly 60,000 products to choose from, we also have unlimited access to hundreds of thousands of product SKUs from over 300 of the industry’s premier manufacturers. But did you know that Kele has […]
Read PostComing Soon—New Kele.com & 2014-15 Kele Catalog
At Kele—we’re committed to providing you the best products, services and solutions in the building automation and HVAC/R industries. And we’re starting 2014 off with two new solutions that will help you get the job done right! In the first quarter we will be launching a new Kele.com and will be releasing our 2014-15 Kele […]
Read PostWhen the Controls Just Won’t Work
I have an old engineer friend I’ll call Bucky (not his real name). Bucky was burned years ago when he designed an HVAC system that turned out to have insufficient capacity to keep the building comfortable in winter. In fact, the perimeter offices were in the low 50s (°F) (low teens °C) when the first […]
Read PostTHE (RS-485 Network) TERMINATOR Or The Dance of the Data Pulses
If you’re involved with building automation systems you know (unless you’ve been living under a rock like the guy in that insurance commercial) that the modern trend is to connect all your building controls together on networks. Networks make it easy to add or move control nodes as your building control needs change since the […]
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