Eaton Crouse-Hinds Cam-Lok™ E1016-1600 and E1016-1700 Series Receptacles

Figure 1: NameplateEaton’s Crouse-Hinds Business has identified a product non-conformance affecting Cam-Lok™ E1016-1600 and E1016-1700 Series Receptacles, all colors, shipped between February 24, 2017 and May 18, 2017.

The affected products include an incorrect voltage reference molded into the insulator. Specifically, the insulator states a maximum voltage of 6000V rather than the correct reference of 600V. The use of higher rated voltages may compromise the insulation of the receptacles resulting in overheating or short-circuit. Eaton is requesting that you return any affected product for replacement units with the correct voltage reference.

Eaton’s Crouse-Hinds Business is committed to the highest standards of quality and regrets any inconvenience that this situation may have caused you. In case of any questions or concerns regarding this bulletin, please contact Eaton Crouse-Hinds Customer Care at crousecustomerctr@eaton.com.

 

How to Save Energy Using Variable Speed Drives

By Mike Robertson, Summit Gear and Project Specialist

It seems that everywhere you look you can find different products that mention energy savings. How about discovering a tried and true method that uses data and independent testing to prove true energy savings? It sounds too easy, right? Let us take a look at variable speed drives (VFDs) and how they cannot only save energy but pay for themselves.

The first place to start is to examine the total amount of energy consumed and break down where the energy is being used. Looking at the total amount of energy consumed in the chart below, the United States uses about 20% of the world’s energy. Out of the 20% of the total energy used, 41% is consumed in the buildings sector (residential and commercial) and 30% in the industrial sector.1 Per the U.S. Department of Energy, 68% of electrical use is by motors and motor-driven systems.2

The majority of the buildings in the U.S. will have loads, which are motor-driven. Most of these loads are heating and cooling, which use motors to circulate both air and fluids. Per the U.S. Department of Energy Data Book (2011), 65% of the total energy consumed is by fans, blowers, compressors, and pumps. Since customers are concerned with the rising electrical cost of operating motors, it makes sense to use energy savings to help with the cost. One proven method to save energy and cost is to use VFDs for fans and pumps.

VFDs provide a technique to match load demand to speed. The by-product is reduced cost and increased productivity for the customer. VFDs control the speed of the motor and the horsepower needed to operate the fans, pumps, compressors, and blowers. Not only will the customer experience energy savings, but additional benefits as well, including longer motor life, increased power factor, and less audible noise.

The energy savings from using VFDs are based on the Affinity Laws (Fan Laws or Pump Laws) for fans/pumps and indicate that the air or fluid provided varies directly with the pump or fan rotational speed. The Affinity Law for centrifugal load state is:

N = Speed

Q = Flow

P = Pressure

HP = Horsepower

FLOW is proportional to motor speed Q2/Q1 = N2/N1

PRESSURE is proportional to motor speed squared P2/P1 = (N2/N1)2

POWER is proportional to the motor speed cubed HP2/HP1 = (N2/N1)3

Therefore, by reducing the speed from full speed to half speed, the power consumption reduces to 88%. Now let us look at the energy savings by using a drive.

In this example, we examine a 25HP fan working three shifts a day for five days in a week for one year. The cost of operating the fan at full speed for one year is:

25HP * 7.46 kW/HP * 6240hrs * 0.075 kWh = $8,728.00 per year at full speed

Let us say the fan does not need to run full speed (most of the time fans do not) but runs:

  • 20% of the time at 100% speed
  • 60% of the time at 80% speed
  • 20% of the time at 60% speed

The cost of operating the fan with a VFD is:

25HP * 0.746 kW/HP * 1248hrs * 0.075/kWh *(1.00)3 = $1,746

25HP * 0.746 kW/HP * 3744hrs * 0.075/kWh * (0.80)3 = $2,681

25HP * 0.746 kW/HP * 1248hrs * 0.075/kWh * (0.60)3 = $377

TOTAL = $4,804

The annual savings for the customer = $8,728 – $4,804 = $3,924

The VFD by using the Affinity Laws provides the customer a method of energy savings and reduced electrical bills. The savings from the VFDs can pay for itself. A simple payback is calculated by:

Simple payback = initial investment cost/savings

Let us assume an enclosed 25HP VFD with bypass at 480V costs $3,263.00. Simple payback is:

$3,263.00/$3,924 = 0.83 years for simple payback for the VFD

Additional customer savings may be available with the local electric utility in the form of rebates by installing VFDs in the customer’s facility. Contact your local Summit representative to help you discover energy savings with VFDs.

 


References

[1] Nasir Khalid, “Efficient energy management: is variable frequency drives the solution,” Malaysia 2014.

[2] U.S. Department of Energy Buildings Data Book (2011), Chapter 1: Buildings Sector, retrieved from http://buildingsdatabook.eren.doe.gov.

 

What Did You Say?

While common in men over 40 and (typically) profound in men over 60, hearing loss is almost completely preventable. These tips also apply to women, but it happens to be men who generally disregard hearing protection. You can’t repair the damage, so prevention is essential. Due to sound quality and other issues, hearing aids don’t make up for lack of prevention.

These tips will help you participate in normal discussions, avoid tinnitus, and enjoy music in your later years:

  • Carry earplugs with you at all times when at work. You never know when you will need them, and you may need them even if no signs in the area say so.
  • Know the noise conditions ahead of time. If something in the area “could” produce excess noise, bring the hearing protection that is adequate for the danger. For example, there’s a big punch press but it’s not running. Before you start working near it, have earmuffs with you (foam earplugs will not be sufficient).
  • Don’t wait for someone to tell you to wear hearing protection. Be proactive. If you must raise your voice to be understood, it’s loud enough that you need hearing protection.

Off the job is also important. Many people dutifully wear hearing protection where signs at work say it’s required. But then they go home and operate a lawn mower or table saw without hearing protection. Always wear hearing protection when operating any power tools, regardless of where you are using them.

Source: Mark Lamendola | Mindconnection

Overlooked Ways to Reduce Lighting Costs

When it comes to reducing lighting costs, most thinking is directed at more efficient technology. Perhaps an upgrade from a T12 fluorescent lamp to a T8 fluorescent lamp. Or going with LED.

Yes, such an upgrade makes sense. But don’t stop there. Consider the following:

  • Upsize the conductors. Especially in large buildings like warehouses or factories, the lighting circuits have long runs. The little bit extra you spend on larger conductors (especially for the “backbone runs” or “home runs”) will reduce voltage drop and thus lower energy waste.
  • Upgrade the Equipment Grounding Conductor (EGC). One reason for running metallic raceway with 277V lighting is it provides an excellent EGC, carrying much more high frequency objectionable current in its skin than an enclosed conductor can. Tubing and conduit both work well for this purpose. Consider installing bonding jumpers around raceway joints, at least on the home runs. This ensures the continuity of your EGC, regardless of the existence of issues that would otherwise interrupt continuity.
  • Install lighting on its own transformer. Lighting is a single-phase load. In many cases where voltage imbalance is causing motors to fail prematurely, the cause is an error in balancing the single-phase loads that are on the supply transformer for the motor circuit. You eliminate this unintended cost of lighting entirely, by using a separate transformer for the lighting.
  • Identify and correct power quality issues. Poor PQ means higher maintenance and repair costs, plus lighting interruptions.

Source: Mark Lamendola | Mindconnection

Eliminate Repetitive Measuring Tasks

How often do you make the same measurements? For example, consider how many measurements are made to cut a hole in drywall for a receptacle box. Using a template for that purpose eliminates several steps. It also eliminates the touch-up needed to repair a hole that isn’t cut right.

If you multiply the time saved by the number of receptacles in a typical new building project, you can save some serious labor costs.

Speaking of receptacles, how many times do you measure receptacle mounting height? Why not cut a stick to that length for a perfectly consistent height every time? Light switches, same thing.

What about mounting a distribution panel to a wall? Consider the steps involved to get the correct height and to level it. Also, you might need an extra pair of hands: a person who will be standing around doing nothing except for the few minutes during which the panel is put into place.

You can build a wheeled fixture with leveling feet to make this job faster and safer. Set it in place, adjust to the desired height, level it, then use it as a platform for the panel. This also eliminates trying to level the panel while holding it up.

Source: Mark Lamendola | Mindconnection