User manual for single-phase meter
5
The supply voltage for the meter is obtained from the power grid, ensuring the normal
operation of internal parts of the meter.
Battery:
The battery supply connected in parallel with the normal supply ensures the operation of the
meter free from outage. When the normal supply is switched off, the backup battery has the
capability to support the RTC in meter and detect cover opening tampering events.
Memory:
There are two kinds of memory:
EEPROM memory for storing meter parameter and energy data
Data Flash memory for storing event record, load profile, and billing data, etc.
Relay(only for DC meter):
The connection and disconnection of user network can be controlled by relay, including load
control and manual control.
Communication interface:
The meter up to 3 communication interfaces:
Optical interface: Meter reading and programming could be done through PC and HHU
(Hand Held Unit).
Pluggable module: inside of meter, protected by the front cover, can be replaceable from
different kinds of communication modules to build AMI system.
RS485 communication port
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