Metering

Single phase smart and prepaid electricity meters.

Single phase electricity meters to IEC 62052 and 62053, for prepaid, postpaid and smart networks. STS6 compliant prepayment and open DLMS/COSEM communications work with plug in power line, Wi-SUN RF mesh, LoRaWAN and cellular modules, including NB-IoT and LTE-M. These are among the highest quality meters available, premium built for harsh environments and very long service lives.

Make an enquiry

A single phase postpaid meter beside a single phase prepaid meter with keypad

Operating modes: Prepaid, postpaid and smart
Rated current: 5 (80) A, optional 5 (100) A
Accuracy class: 1.0 kWh
Protocol: DLMS/COSEM

The range

Prepaid, postpaid and smart single phase meters in standard and DIN rail versions. They are DLMS/COSEM meters that take a plug in communication module, so one meter platform can run on power line, Wi-SUN RF mesh, LoRaWAN or cellular networks, including NB-IoT and LTE-M, and change later. Need three phase? See our three phase meters.

Customised designs available. If your project needs ratings, features, design requirements or arrangements outside the standard range below, we design and manufacture to your requirements and application.

Single Phase Meters

One single phase meter platform for prepaid, postpaid and smart metering. Run it as a prepaid meter with STS 6 token entry, as a postpaid meter, or as a smart meter with communications built in. Prepaid and postpaid meters can be supplied without communications and have a plug in module fitted at installation or added later, so meters already in service can join an AMI network without being replaced. Single element and two element versions are available. Four quadrant measurement, up to 8 tariffs, load profiles and event logs, with an optional load switch.

Operating modesSingle Phase Meters

Prepaid	STS6 compliant. Pay in advance, with credit loaded by token or remotely
Postpaid	Conventional billing, no communications. Communications can be added later
Smart	Prepaid or postpaid with communications built in

Technical dataSingle Phase Meters

Reference voltage	120 to 240 V
Current	5 (80) A Optional: 5 (100) A
Accuracy	Class 1.0 kWh; class 2.0 kvarh
Frequency	50 Hz, ±5% Optional: 50 or 60 Hz, ±2%
Measurement	Four quadrant, import and export active, reactive and apparent energy
Elements	Single element or two element
Operating voltage range	70% to 130% of reference voltage
Impulse voltage withstand	Rated 6 kV impulse per IEC 62052-11 Withstands surges well above this requirement
Continuous overvoltage	Meets IEC 62052-11 Withstands sustained overvoltage well above this requirement
AC voltage withstand	4 kV
Fast transient burst immunity	4 kV
Tariffs	Up to 8 tariffs, 6 seasons, 100 special days
Load profile	Up to 32 channels; 30 minute interval and up to 90 days by default
Payment modes	Prepayment or postpayment; three level credit alarm; emergency credit, friendly time and friendly days
Token entry	Remote credit transfer Optional: 20 digit STS 6 tokens by keypad
Load switch	None Optional: Bi-stable relay, to 90 A
Communications	Plug in module, fitted at installation or retrofitted later Optional: Communications built in (smart version)
WAN communications	Plug in module Optional: G3-PLC, BPLC, Wi-SUN RF mesh, LoRaWAN, GPRS, 3G, 4G, NB-IoT, LTE-M
HAN communications	Optical port Optional: RS485 or M-Bus; built in RF or power line
Standards	IEC 62052-11; IEC 62053-21 and 62053-23; EN 50470-1 and 50470-3 (European MID); IEC 62055-31 for prepaid
Certification	SGS certified; type tested to IEC and European standards
Data protocol	DLMS/COSEM, with low level and high level security Optional: Security Suite 1 (three phase)
Firmware upgrade	Local interface and over the air
Event logging	Fraud, failure, power quality and security events
Protection	IP54; Class II insulation
Operating temperature	−25°C to +55°C Optional: −40°C to +70°C limit range
Humidity	Up to 95%, non-condensing
Design life	15 years or more

A single phase DIN rail prepayment meter with indicator lights, terminals and a clear terminal cover

Single Phase DIN Rail Meters

Compact prepaid and postpaid meters for DIN rail mounting, with an optical port, RS485, DLMS communications and an optional load switch. Prepaid and postpaid modes can be switched while the meter is in service.

Technical dataSingle Phase DIN Rail Meters

Measurement	One element, four quadrant
Tariffs	Up to 4 tariffs, 6 seasons, 50 exception days
Load profile	Up to 20 channels; 15 minute interval, up to 60 days
Payment modes	Prepaid and postpaid, switchable in service
Communications	Optical port to IEC 62056-21; RS485; DLMS
Load switch	None Optional: Local or remote controlled
Backup power	Internal battery Optional: External battery
Standards	IEC 62052-11; IEC 62053-21 and 62053-23
Certification	SGS certified; type tested to IEC and European standards
Data protocol	DLMS/COSEM, with low level and high level security Optional: Security Suite 1 (three phase)
Firmware upgrade	Local interface and over the air
Event logging	Fraud, failure, power quality and security events
Protection	IP54; Class II insulation
Operating temperature	−25°C to +55°C Optional: −40°C to +70°C limit range
Humidity	Up to 95%, non-condensing
Design life	15 years or more

Design and performance

One single phase meter platform for postpaid, prepaid and AMI.

Prepaid or Postpaid in One Meter

Prepayment and postpayment modes can be switched in the field, so one meter serves both customer types and a customer can change over without a replacement.

STS 6 Token Prepayment

Optional 20 digit STS 6 tokens are entered by keypad or sent remotely to transfer credit and parameters, with three levels of low credit alarm, emergency credit and friendly time and days.

Plug In Communication Modules

WAN modules plug into a separate module box, so power line, Wi-SUN RF mesh, LoRaWAN and cellular options, including NB-IoT and LTE-M, are fitted or swapped without a new meter. Local HAN options include RS485, M-Bus, RF and an in-home display.

Open DLMS/COSEM Protocol

Meters speak DLMS/COSEM with password and encrypted authentication, so they work with standards based head-end systems. The DLMS implementation has been conformance tested by the DLMS User Association.

Tamper and Fraud Detection

Meter cover and terminal cover opening, current reversal and strong magnetic fields are detected and logged, with power quality, failure and security events recorded alongside.

Remote Load Control

An optional internal bi-stable relay supports remote disconnect and reconnect, over current and power limit control, and automatic disconnection on tamper or no credit.

Local Reading and Setup

An optical port to IEC 62056-21, plus Bluetooth or RF handheld reading, lets crews read, set parameters and update firmware on site with an Android app.

Performance Beyond the Standard

Our single phase meters are built beyond the IEC requirements. Surge and overvoltage withstand goes well above the requirements of IEC 62052-11. They are designed and tested to IEC and European (EN 50470, MID) standards, and built for the overvoltage and surge conditions of utility networks.

Premium Quality, Built for the Long Term

These are amongst the highest quality meters available, premium built for harsh environments and engineered for very long service lives. Class II insulation, IP54 protection and a design life of 15 years or more, with replaceable backup batteries and firmware that is upgraded over the air, keep meters accurate and in service year after year.

Applications

Delstar supplies single phase meters for:

Residential AMI Rollouts

Single phase smart meters on power line, RF mesh, LoRaWAN or cellular networks for network wide meter reading.

Prepaid Metering Programmes

Prepaid meters with STS tokens for utilities and metering providers running credit and token based supply.

Pacific and Remote Networks

Prepaid and RF or cellular meters for island and remote utilities where site visits are costly.

Multi-Unit and Cabinet Installations

DIN rail meters for metering panels, apartment blocks and commercial tenancies.

Sourcing and quality assurance

Our single phase meters come from an established metering manufacturer that designs its own meters, communication modules and head-end software, and builds them on automated production lines with in-line testing. Meter designs are type tested and certified by SGS to IEC and European (EN 50470, MID) standards, and the DLMS/COSEM implementation is conformance tested by the DLMS User Association. Delstar checks each order against your specification and delivers to site across New Zealand, Australia and the Pacific.

Lifecycle support

Specification and selection: we help match the meter type, communications module and prepayment option to your network, tariff structure and metering provider requirements.
Spares and asset management: spare meters, communication modules and ongoing support through our asset management service.

Talk to our team

Specify your metering requirement.

Tell us the quantity, voltage and current rating, whether you need prepaid or postpaid operation, your communications network, and your head-end or vending system. We will recommend the right meter.