Physical components
Enclosure and covers
The SGM1430-B meters use a thermally stable, UV-
protected polycarbonate enclosure that is double
insulated to protective Class II. The enclosure provides an
Ingress Protection Rating of IP54 in accordance with IEC
60529. The following cover segments are constructed of
polycarbonate 10% GF (Grade Lexan 503RS):
•
Meter cover - When the meter is fully installed, the main
cover cannot be removed while the terminal cover is
fitted to the meter.
•
Terminal cover – This protects the terminal screws
from external contact. Inside the terminal cover is a
diagram identifying the connections on the terminal
block. This includes a schematic diagram and description
of all physical elements on the terminal block, the
arrangement of active and neutral terminals for the
conductors, and an identifying number defining the
specific variant of terminal.
Cover seals
The meter cover and terminal cover are secured by
standard single sealing screws. Each screw head, which has
a torque value of 0.6-0.9 Nm, features a recessed hole and
slot to accommodate a 0.914 mm diameter thread wire
seal. The sealing wire is crimped close to the body of the
meter using a tool with die indents. As a manufacturing
option, the meter can be supplied with an ultrasonic
permanent seal.
Display
The SGM1430-B meter face has a backlit LCD that
consists of graphical elements and segments. The
graphical section displays the meter status in quantities
up to eight digits, including the unit of measure. It can
also display end user instructions to advise installation
teams that commissioning is complete. The LCD backlight
will illuminate the display when a button is pressed. The
automatic scroll duration, manual scroll timeout, backlight
duration, and contrast adjustment are configurable via the
display settings.
The display shows the following:
•
Units of measure
•
Constant display of the meter status
•
State of the primary supply contactor
•
State of the auxiliary control relay (applicable to
SGM1432-B and SGM1433-B)
•
Voltage state per phase
•
Direction of current per phase
•
Signal strength as reported by the HAN module
•
Communication status of the HAN network
•
Direction of energy (e.g. flowing from the premises to
the network)
•
Battery status
•
Various data values, meter status, and indications
•
Current and historical energy and demand registers
SMETS2 - Smart Meter Polyphase User Manual
DR1401 Aclara polyphase meter manual
9
Updated on:
01/02/2022
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