When does a Meter require an Uninterruptible Power Supply (UPS)?

Issue
When does a Meter require an Uninterruptible Power Supply (UPS)?

Product Line
ION and Powerlogic meters

Resolution

An UPS or some form of uninterruptible power supply should be used for control power when:

• A meter does not have control power ride through.
• The need to capture alarms, events, waveform captures, or logged data is required in a critical environment.
• Communications to the meter should not be lost.
• Status inputs connected to the meter are being monitored by a PLC or other SCADA systems.

A UPS is not required when:

• The meter is metering only instantaneous data.
• Missing events and data are acceptable during power outages.