Technology & Key Markets

Introduction to Magnetic Field Issues

Is a magnetic field a real problem?

Electronic and electrical equipment is sensitive to elevated levels of EMF that affect its performance (medical devices for example). Signals are affected by magnetic flux and need to be protected (Space, Shielding, Electronics).
Extended exposure to EMF can impact health. Protection is costly and cumbersome.
What are the current behavioral measurements to deal with EMF issues?
Keeping an appropriate distance from the source as the intensity of the magnetic field decreases by distance.

Shortening the exposure time as EMF’s biological effect is cumulative, and the longer the exposure the more serious the potential impact. For example, 1000MG is acceptable for momentary exposure but the recommendations for long term exposure are 2MG to 4MG.  By this definition, public buildings like schools, hospitals, offices and similar locations are all defined as “long exposure” spaces and require extremely low EMF values.

The effect of multiple sources of EMF is cumulative; as a result, any partial protective treatment is better than no treatment at all.
All these measurements are expensive and almost impossible to achieve.
What are the current engineering measurements to deal with the EMF issue?

Using shielded cables of several layers (single, double, triple or more). However, in addition to their EMF limitations they also have several undesirable effects, including:

  • High cost
  • Excessive weight
  • Low flexibility
  • Complex termination of the shielding layers

Using “Twisted Pair Technology” (TPT). This technology is limited both in EMF reduction level and its limitation to a single phase cable only. It is currently used mostly in signal cables.

Using metal sheets. The concept is to protect the entire space that EMF sources reside in (room, vertical pier and such). It is relatively expensive and heavy and thus negatively impacts both affordability in terms of purchase and ease of installation.

Does ELMF (our own propriety and patented technology) offer a real solution?
ELMF’s technology for the first time provides magnetic field Cancellation instead of magnetic field Protection.

Cancellation is, by definition:

  • More effective
  • Lighter when implemented
  • Cheaper in production
  • Flexible in installation

There are always two aspects in presenting new technologies:

“What” can be achieved.
“How” it is done (our proprietary and confidential technology).
This document will only describe ELMF’s technological capabilities. The “How” issue can only be discussed under an OEM agreement, as part of an implementation plan.

Introduction to ELMF technology

ELMF’s technology evolved from one clear idea that was implemented, tested and developed in three categories:

  • EMF features
  • Electrical characteristics
  • Physical attributes of the cable.

The first group of EMF features includes the following:

Reduction in EMF by about 95% in the magnetic field around the cable. It is applicable for single and three phase cables, and AC as well as DC cables. The basic field attenuation is maintained when also in unbalanced load scenarios.
Immunity to external EMF fields for better signal transfer and protection as well as to EMP events.
Improved magnetic field decay relative to other cables in the market. So not only do ELMF cables cancel most of the magnetic flux, but they also decline to zero very rapidly.
Clear superiority over “twisted pair” options when used in communication cable configurations.

The next group of attributes has to do with the electrical performance of the cable that stems from ELMF’s special cable design.
Reduced self-induction of the cable for all practical cable cross sections in the vicinity of 50%.
As a result, the cable has lower impedance, which in turn causes lower voltage drop along the cable and therefore potential energy savings by cutting the losses along the cable. For most relevant cross-sections, tests show a 10% – 25% reduction in losses along the line.  A typical large electric power distribution system is assumed to have 3% losses on the line, based on use of regular cables. Based on this, a similar ELMF system could reduce power losses to about 2.5%.  This will translate into a huge reduction in operating expenses (OPEX).

The third group of attributes deal with physical profile of the cable.

Weight savings especially relative to shielded cables. Shielding’s relative weight is between 50% of the cable weight on small cross-sections of single 1.5 mm2 to 14% on large cross-sections of three phase 120 mm2.
Weight savings especially relative to twisted pair configuration. ELMF technology achieves much better performance without twisting and by this achieves savings on the conductor length of up 15% – 20%.

ELMF’s technology opens two potential approaches for a cable designer:
Reducing the cross section and by that save on copper which is the most expensive raw material,
Or, keep the same cross section and demonstrate an improved current rating.
In both cases it is a very important value proposition in the market place and / or on the production floor.
The steady state working temperature of the cable is lower due to improved heat dispersion and the electrical cable profile described above (e.g. impedance and voltage drop)

ELMF cables are easier to install due to the increased cable flexibility and lower weight.
All of the above creates a multi-layer technology in which the different attributes may appeal to different market segments.
It is important to note that the technology is fully implemented in power distribution cabinets that feature attenuation of over 65% of the magnetic field around the cabinet. This performance is maintained in cases where the three phases are not equally loaded (unbalanced load).

Key market for the near future

Construction market- EMF Reduction, “Green” building code

Install feeding lines where high current is applied, like central piers.
ELMF cables add on is still lower in cost than other protection means.
When ELMF technology is introduced early in the property design, it may mean space saving around the pier and other high EMF areas.

Cable manufacturer – Differentiation, Lowering production cost

New technology in a stagnant traditional market.
Potential production cost reduction due to lower copper cost and shielding expenses.
Potential production cost reduction by replacing “twisted pair” operation when applicable.
Potential new market by introducing innovative cables solution to unique market like welding and EV chargers.

Power Cabinet manufacturers – Differentiation

New technology in a stagnant traditional market.
ELMF Power Distribution cabinets may mean significant space savings.

Consumer electronic main distributors – Differentiation, “Going Green”, Sound & Signal quality

CE is a very competitive market and the market leaders are in a constant race for new technologies that can turn into “conversation items” and provide differentiation.
Superior sound quality with ELMF construction.
“EMF Stage Free” concept that is not possible today. Ongoing talks with Monster Cable Inc. about a professional line.

Key market – medium and long term (looking for strategic developing partner)

Trains – Weight saving, EMF and public safety

Weight saving: (1) on cables weight (2) by installing power along with signals.
Help to keep EMF within permitted limits.
OPEX saving on fuel along the entire life span. A train may travel 400,000 km per year, 8,000,000 km over half life span (20 years). Each kg saved can be turned into huge energy savings.

Welding – EMF reduction, Productivity, Safety differentiation

New patent application may dramatically reduce EMF values around the welding cells.
Allow for longer shifts – not artificially terminated by safety restrictions.
Employee’s safety – improvement in poor current situation.
High potential in the professional smaller machines.
Secondary high potential in the amateur market (DIY) offering ELMF machines.

EV Chargers – Differentiation, Public safety

Shortening charging time is the name of the game in this industry.
Shortening charging time requirement imposes high current and creates a high magnetic field.
Wide distribution of these charging points may turn into a public health issue in the long-term. ELMF technology can be used to support industry transition while keeping EMF values within recommended range.
Potential reduction in energy losses.

Automotive (regular and EV)

Weight saving on cables – the automotive industry is in a constant struggle to reduce car weight and every gram counts.
Help to keep EMF within permitted limits when it comes to EV or hybrid configurations.

Wind Farm industry – Energy savings, EMF reduction, Immunity

Potential energy savings along long feeding lines that connect the towers to the grid connecting point
3% losses are assumed today in the BP and cutting it by 10%-20% may mean adding 0.3% – 0.6% back to the bottom line.
Within the tower the directive is that each component that is placed will not “EMF disturb” and will not be “EMF disturbed” by other components. ELMF technology perfectly meets this requirement.

Defense – Immunity, EMF Reduction

Many systems are sensitive to high level of EMF, especially in mobile command posts where long shifts are taken.
Communication security. ELMF immune cables are an efficient solution

Summary

Traditional industries (like the power cables and power distribution switchboards) have to survive in a “Red Ocean” (fierce competition) where pricing is the main marketing tool.

ELMF opens up a whole new “Blue Ocean” by introducing a new technology that generate new sales opportunities based on:

  • New markets
  • New products to existing markets
  • Compliance with safety requirements & recommendations
  • Differentiation in the market along the distribution chain

ELMF Product Line

ELMF Scope of Implementation

ELMF Scope of Implementation – Click to enlarge

 

 

 

 

 

 

 

 

 

 

 



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