Dual Source Energy Meter
Background
A single meter can separately register utility and generator power sources with RS485 communications.
![PM250 Dual Source Meter](/main/images/tabs/38-1.jpg)
In certain places where utility power is unstable and unreliable, many buildings have adopted their own private generators as a backup power source to provide a continuous and uninterrupted power source.
Building Types
Rental office buildings, high end residential buildings, rented factories and shopping centers.
Metering Equipment
To meet the needs of such a requirement, by necessity a system is created to bill for the utility power and generator power separately, as generator power is more expensive. Thus there is a need to register the power usage for both utility and generator power separately as well.
Conventional Setup
![Dual meter wiring setup](/main/images/tabs/38-2.jpg)
New Panel Wiring Approach
![Dual source meter setup](/main/images/tabs/38-3.jpg)
- Each tenant would have their own dedicated dual source meter.
- The dual source meter display normally displays the currently active power source but can be switched to show the alternate power source.
- With its communication capability, it can be linked with a remote host for auto meter reading and automatically generating the monthly billing.