drax SGM1430-B Polyphase Electricity Smart Meter User Manual
- June 5, 2024
- drax
Table of Contents
Drax SGM1430-B Polyphase Electricity Smart Meter
Proprietary notice
This document contains information that is private
to Aclara Technologies LLC, an Ohio limited liability company, and/or that is
private to Aclara Meters LLC,
a Delaware limited liability company (individually or collectively “Aclara”).
This information may not be published, reproduced, or otherwise disseminated
without the express written authorisation of Aclara.
Any software or firmware described in this document is furnished under a
licence and may be used or copied only in accordance with the terms of such
licence.
Disclaimer
The information in this document is subject to change without notice and
should not be construed as a commitment by Aclara. Aclara assumes no
responsibility for any errors that may appear in this document.
No responsibility is assumed for the use or reliability of software on
equipment that is not supplied by Aclara.
MeterMate, SGM1100, SGM1300, and SGM3000 are trademarks of Aclara Meters LLC.
All third-party trademarks are the property of their respective owners. Aclara
may have patents or pending patent applications covering subject matter in
this document. The furnishing of this document does not provide any license
whatsoever to any of these patents.
Product description
The SGM1430-B meter from Aclara is one of an advanced, modular designed family
of products for small to medium enterprise and commercial installations. The
SGM1430-B is available in different polyphase variations, and it forms an
integral part of a complete two-way, secure, end-to-end solution.
The SGM1430-B offers flexibility and the choice of home area network (HAN) and
wide area network
(WAN) communications. As standard, the SGM1430-B supports different advanced
metering infrastructure
(AMI) technologies, including the UK communications service provider (CSP) hub
solution. This hub mechanically connects directly to the electricity meter and
communicates with it using the ZigBee communication protocol. A manufacturing
option that provides direct communications via a hardwired interface is also
available.
The on-board ZigBee radio frequency (RF) interface uses an industry-standard
Smart Energy Profile for HAN communications to the UK communications hub and
in-home displays (IHDs) .
The standard meter is supplied with an integrated 3 x 100 A switch for
consumer supply connection/disconnection. Certain models of the SGM1430-B
meter offer an optional 2 A load control relay for controlling other ancillary
devices such as night storage heating and pumps.
The meters also support a comprehensive tariff developed in association with
the UK Great Britain Companion Specifications Standard, plus both seasonal
time of day (STOD) and block tariffs.
Additionally, the meters offer storage for two years of load profile data and
support independent profiling of voltage profile data (e.g. line voltage,
current, frequency). The SGM1430-B meter also provides, as standard, enhanced
power quality features offering support for sag/swell and under/over voltage.
Designed with easy installation in mind, the SGM1430-B meter offers a means for quick and secure deployment, and a custom-designed Liquid Crystal Display (LCD) provides added value information. For example, when ZigBee is used, information such as HAN pairing progress, notification of pairing complete, local signal strengths for HAN is displayed to improve the installation experience. All SGM1430-B meters have a common layout for buttons, optical port, display, and pulse indicators. The communications hub interface is also standardised across all meter models. It’s possible to customise the SGM1430-B meter with optional variants and extras, including the following:
- Back-lit LCD
- Hardwired communications interface
- Magnetic detection
- Removal of the HAN
General information
Key features
- Product life of 20 years
- Polyphase direct connected (whole current)
- Optional one or two 2 A auxiliary relay
- A field-replaceable CSP communications hub that prevents disruption of service
- Comprehensive metrology – active, reactive, and apparent energy; import and export
- Extensive tariff capability – 48 x standard time of day time of use (TOU) registers and 4 x 8 block tariff
- Two years of load profile data storage
- Three months of voltage profile data
- Daily, weekly, and monthly billing data
- Voltage sag/swell, under/over voltage
- Over and under frequency
- Power factor threshold
- Comprehensive event logging with over 100 unique event codes, as well as Security, Power Event, Standard Event, and Auxiliary Load Control Switch (ALCS) logs for event storage
- Enhanced physical and electronic security (tamper, password levels)
- HAN support of industry-standard Smart Energy Profile
- General Packet Radio Service (GPRS) WAN for remote retrieval of data to a head-end system via CSP communications hub
- Device Language Message Specification (DLMS) and Companion Specification for Energy Metering (COSEM) compliant via the optical port
- Firmware over-the-air (FOTA) full upgrades
- Change of tenancy (CoT) and change of supplier (CoS)
- Dual firmware versions, with rollback feature during firmware update
- Extensive data storage
- Simultaneous local and remote communication without performance loss
- Enhanced power quality monitoring including voltage, frequency, and power factor
- Control of external loads via auxiliary relay
- Short terminal cover
Tariff structure
- Active and deferred tariffs
- 50 special days
- 48 ToU registers
- 200 switching times
- 4 x 8 block tariffs
- 13 end of month billing dates
- 4 seasons
- 5 weekly billing dates
- 5 week profiles
- 31 daily billing sets
- 16 day profiles
Features
- Processor internal memory with 1.5 MB of flash memory for program and boot, plus 640 KB of internal RAM
- External serial flash memory with 16 MB for configuration and operational data, as well as for firmware upgrade image storage
- Configurable display with auto and manual scroll lists and user-defined fields
- Independent communication ports: local optical port, AMI interface port (GPRS as standard), and ZigBee HAN port
- Configurable ToU operation to support fully flexible tariffing
- Flexible calendar definition that supports up to 48 daily time periods, 16 day types, four week types, 50 designated holidays or special days, and four seasons
- Configurable measurement profile with independent measurements for each element
- Select demand measurement for demand calculation, including selected measurement profile and selectable demand interval
- Prepayment mode of operation
- Field-replaceable CSP communications hub that provides flexibility for WAN communications
- Tamper detection for meter cover, terminal cover, and communications hub cover
Models
The SGM1430-B smart meter family consists of meters with common physical characteristics and functionality. The nomenclature of the meter models indicates the following:
Model| Connect type| Phase| Current elements| 3 x 100 A
contactor
| 2 A auxiliary relay| Itr – Iref (Imax)
---|---|---|---|---|---|---
SGM1431-B| Direct| Poly| 3| Yes| No| 0.5-10 (100 A)
SGM1432-B| Direct| Poly| 3| Yes| Yes x 1| 0.5-10 (100 A)
SGM1433-B| Direct| Poly| 3| Yes| Yes x 2| 0.5-10 (100 A)
The following models are currently available:
Terminal arrangements
The SGM1430-B polyphase meters conform to the British Standard Institute code of practice (BS 7856:2013).
Physical components
The SGM1430-B smart meter family comprises several polyphase variants, with and without 2 A auxiliary relay outputs. The main physical features of a SGM1430-B meter are shown below.
- Communications Module Sealing Point
- Active kWh Calibration LED
- Meter Model
- Reactive kVArh Calibration LED
- Terminal Cover Sealing Point
- GUID Identifier
- Meter Serial Number
- Push Buttons A and B – Push Button B is Sealable
- MID Approval Number
- Optical port
- Metrological Seal
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.
Physical components
There are four basic types of indicators on the display: descriptor, numerical, unit indicator, and fixed active elements. Each are described as:
- The top line descriptor supports 32 characters.
- The numerical line supports up to eight digits, along with a decimal and other separators.
- The unit indicator is always to the right of the numerical line.
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
There are four basic types of indicators on the display: descriptor, numerical, unit indicator, and fixed active elements. Each are described as: -
The top line descriptor supports 32 characters.
-
The numerical line supports up to eight digits, along with a decimal and other separators.
-
The unit indicator is always to the right of the numerical line.
Customer support
For help with your meter’s functions, please contact us.
01473 372430