Busway Power Monitoring

PowerWave Bus System Power Monitoring:

In order to manage power you must first monitor and understand its usage. The PowerWave Bus System has a wide range of monitoring solutions providing the following power data:

  • Current per Branch Circuit
  • Minimum/Maximum Current
  • Alarm Setting
  • Real Power – KW per Branch Circuit
  • Apparent Power – Kva per Branch Circuit
  • Reactive Power – Kvar per Branch Circuit
  • Kilowatt Hours per Branch Circuit
  • Power Factor per Branch Circuit
  • Leading/Lagging Power Factor Sign per Branch Circuit

At the heart of the PowerWave Bus System monitoring solution is PDI’s patented BCMS (Branch Circuit Monitoring System). This combination of hardware and software enables power monitoring for both the entire busrail and at each tap off box or branch circuit. Real time analysis can be performed locally via a local display or remotely via PowerMap – PDI’s cloud based monitoring. Open communication standards also enable PowerWave to be connected to Building Management Systems (BMS) or Data Center Infrastructure Management (DCIM) Systems.

PowerWave Bus System Monitoring Components:

Overhead Busway Power Monitoring
Power point data can be captured at two primary locations:

  • Branch Circuit in the Tap Off Box – how much power is being used at at circuit breaker?
  • Busrail in End Feed – how much power is being used by all circuit breakers along the busrail?

This power data is then routed to one of three primary locations where it can be visualized, interpreted and acted upon:

  • Local Display – a local display is traditionally installed in the room where the busway is installed.
  • PowerMap Cloud Monitoring – power data can be pushed to a private and secure cloud where any Internet connected device can view.
  • BMS and DCIM – PDI’s Busway BCMS solution is compatible with most all Building Management Systems (BMS) and Data Center Infrastructure Management (DCIM) software applications where power as well as cooling, asset tagging and many other data points are managed under a centralized solution.
Exterior End Feed Monitoring Components:

Exterior End Feed Monitoring Components
1Integrated Communications Cable – An integrated communications cable sits within the dedicated communications channel of the busway housing. As busrail sections are added the communications cable is extended by a male / female connector.


2Fuses – Three fuses, one for each phase, are integrated into each end feed providing protection to the electronics that accumulate and interpret the power data. In the event a phase is overloaded the fuse will protect these sensitive electronics.


3Monitoring Module – A separate enclosure is mounted to the end feed and houses the electronics to monitor, interpret and transmit power data.

Interior End Feed Monitoring Components:
Interior End Feed BCMS Components

1Glastic Insulation Plate – Glastic, a high performance electrical insulator, is used to dissipate heat and provide short circuit ratings of up to 42 KAIC.


2Termination Pads – Solid copper bus bars accept a wide variety of compression and mechanical lugs making electrical connections quick and easy.


3Current Transformers – When PDIs patented branch circuit monitoring is installed in the end feed each phase will have current transformers installed at each termination pad.


4BCMS Communications Cables – Internal wiring connecting the electronics to current transformers.


5Grounding Lug – An integrated grounding lug is supplied and pre-wired into the busrail.

Tap Off Boxes with Integrated Monitoring:

Tap Off Box Monitoring Components
1Fuses – Three fuses, one for each phase, are integrated into each tap off box providing protection to the electronics that accumulate and interpret the power data. In the event a phase is overloaded the fuse will protect these sensitive electronics.


2Current Transformers – Up to six current transformers are installed in PDIs patented branch circuit monitor when PDI’s patented branch circuit monitoring solution is installed in the tap off box.


3Electronics Housing – A separate compartment is located in each tap off box to house the electronics which gather, interpret and relay power data to the end feed.


4LED Indicator & Molex Connector – A 16″ (40.64 cm) cable is connected between the tap off box and a Molex connector integrated into the communications channel on the busrail. The LED indicator is off when the unit is functioning correctly and blinks when an alarm has been triggered.

Busway Monitoring Connections:

Busway Monitoring Connections

1Busrail Molex Connector – A Molex connector is spaced every 14″ along the busrail making the connection to the tap off box easy and convenient.


2Tap Off Box Molex Connector – A Molex connector is located on the side of each tap off box. This combined with the 16″ monitoring cable makes for an easy installation.


3LED Indicator – The LED indicator is off when the unit is functioning correctly and blinks when an alarm has been triggered enabling you to quickly identify it’s location.

Assembled Busway with Monitoring:

Assembled Busrail with Monitoring Distribution Tap Off Boxes
1BCMS Tap Off Box – This particular BCMS enabled Tap Off Box has the monitoring module attached to the back making the overall height of the enclosure shorter.


2Tap Off Box Molex Connector – A Molex connector is located on the side of each tap off box. This combined with the 16″ monitoring cable makes for an easy installation.


3 Aluminum Busrail Housing – Our busrail with integrated Tough Rail Technology™ is sleek, strong and compact making it the smallest form busrail on the market today.


4Busrail Molex Connector – A Molex connector is spaced every 14″ along the busrail making the connection to the tap off box easy and convenient.

WaveStar BCMS Hub:
BCMS Hub

The WaveStar BCMS Hub is a 10.4″ touch screen display typically mounted on the data center floor or in an electrical closet that is easily accessible. It can address a total of 240 power points which can be made up of any number of busrails or tap off boxes. Real time reports and exportable Microsoft Excel files can be utilized to create a multitude of analytics to understand your power usage. Remote users can login via an IP address to monitor power usage and download reports as well.

WaveStar PowerWave Local Display:
WaveStar Local Display

The WaveStar PowerWave Local Display is a 7″ touch screen display typically mounted on the data center floor or in an electrical closet that is easily accessible. It can address a total of 96 power points with up to six (6) busrails and up to fifteen (15) tap off boxes per busrail. The WaveStar PowerWave Local Display is a great solution for smaller installations.

PowerMap Cloud Monitoring:
PowerMap Cloud Based Power Monitoring

PowerMap is a highly scale-able and secure cloud based power monitoring platform giving small users or large enterprise users the ability to monitor power usage across any Internet connected device. PowerMap can be integrated with the WaveStar BCMS Hub or utilized as stand alone solution and offers a multitude of power point data in which to visualize and export to customized reports.