Digital meters are the precise monitoring devices of power distribution systems:
Three examples of digital meters implementation
1. In a shopping mall
Metering is used for sub-billing to shopping mall tenants (1 tenant = 1 shop). The supervision collect each tenant consumption and enable monthly billing. It also enables to find out which tenant has abnormal consumption and correct the root cause.
2. In a factory
Supervision and remote control system, including metering. Metering is used to monitoring overall factory consumption, but also consumption at the level of a production line, or even at each machine.This enables process engineers and maintenance to benchmark, e.g. line output vs. power consumed.It also enables to identify where electrical issues appear, enabling local maintenance without shutting down the whole production.
3. In a hospital
In a hospital most of the electrical devices are critical: an EEG must always be fully functional in the ICU, air filters must always be supplied with the right voltage in the surgery areas, etc. Also, in a hospital, one of the biggest operational expenses is electricity: monitoring its consumption is the first step to energy efficiency.
Types of meters
The key characteristics to select a meter can be listed as follows:
- Measurement Inputs
- Digital inputs/outputs type & quantity;
- Analog inputs/outputs type & quantity;
- Communication protocol;
- Measurement accuracy
- Schneider Electric