A system going forward

Traditionally, the U/G distribution systems are based on the use of MV/LV single-phase transformers, either mounted on pads or concealed. About 12 clients are connected in average on each of these transformers, often using homeruns that can run 200 ft or more. This concept was designed about 50 years ago when homes used little energy. Today, most homes require 200A, which makes it more and more prohibitive to install the transformers as far from the homes. This is why it has become standard to connect sizable loads using commercial voltages, 600V or 480V 3-phase. But homes must remain at 120/240V single phase. The solution is to use commercial voltages between the main distribution network and the homes, which implies using a small transformer near each home or group of attached homes to produce the required 120/240V.

As shown in the diagram below, this “ intermediate voltage (iV)” approach reduces dramatically the wiring and number of equipment required to deliver energy to homes. This also creates a local distribution network that is fully compliant with the Electrical Code, which is not the case with conventional U/G networks. This characteristic of conformity, plus the simplicity of the concept, makes it very attractive technically and economically. However, the major improvement is primarily an optimal integration of the power (and telecom) network components in the urban setting. Therefore, MCM has developed a special base called the MCM-iV Base™ to implement the iV system on which concept MCM has chosen NOT to solicit intellectual property (IP) rights, in order to facilitate its proliferation as public property.

Here is a comparison of the conventional method against the MCM-iV System

Click on the image for a detailed view.

IMPORTANT NOTE: For an optimal use of the MCM-iV Base, please refer to the APPLICATIONS section which shows all of the basic configurations with the MCM Bases.