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eXpertpower software screenshot

Electricity Billing Software

SATEC’s introduction of their comprehensive Web Based billing software package eXpertPower™ allows for the monitoring and energy usage consumption of tenants and provides for the billing process to be maintained providing features such as

  • Dynamic Tariff Definition
  • Pricing Management
  • Time of Use (TOU)
  • Tariff Metering/Management
  • Invoice Management
  • Electricity Demand
  • Tenant Management
  • Seasons Scheduling
  • Cost Allocation
  • Sub-Metering solutions
  • Flexible invoicing options
  • Invoice Comparison
  • Tenants move In/Out process

Together with SATEC’s NMI approved metering for electricity measurement, SATEC can provide a solution package for hardware and software solutions ensuring system integrity of data and billing profiles

Contact SATEC (Australia) Pty Ltd

Phone: 02-4774-2959

ExpertPower

EM133 NMI Approved Electricity Meter

Sub-Metering & Electricity Billing. Measuring Dynamically & Accurately up to 100Amp.

Today’s world of Electrical Measurements is important to ensure various levels of readings are accurate, repeatable for data validation, billing accuracy and assurance of data integrity.

In Australia measurement standards for Electricity Metering must comply with IEC/AS62053-xx and current transformers for metering must comply with IEC/AS60044-1.

Measuring loads below 100Amps with the use of Current Transformers (CT’s) potentially can create reading problems. It is not uncommon to find readings that could be in error due to the measurement technique’s being carried out. Dependent on the CT’s design and subject to their Accuracy Class and Burden many may inhibit reading errors that are incorrect for the application they were intended. More importantly if the loads being measured are low with respect to the CT ratio deployed. The table below is typical of the Accuracy and VA delivered by Toroidal (Donut) CT designs, although dependent on the manufacturer they will vary in specifications.

Ratio of CT Accuracy Class 0.5 Accuracy Class 1.0 Accuracy Class 3 Accuracy Class0.5S Accuracy Class0.2S
40/5A 3VA
50/5A 1VA 2VA 3VA
60/5A 1VA 2VA 3.25VA
75/5A 1.5VA 3VA 4VA
100/5A 2VA 3.75VA 3.5VA 2.5VA 1VA

Connection of the CT with the electrical meter introduces additional burdens which may have an impact on the measuring system accuracy due to the inadequate burden of the CT to drive the electrical metering device. Additionally phase angle error accuracy’s represented in degrees by the current transformers also create further errors to the energy/power meter readings. At unity power factor generally the phase angle error maybe negligible, but deteriorates as the power factor decreases. Phase angle errors involving watts, vars, energy, and power factor have an impact on reading outcomes when it comes to power measurements.

In addition to the accuracy performance of an electrical meter, its performance also relies on the installation merits such as CT sizing with respect to load conditions, accuracy of CT, lead length, burden of CT, correct connection of voltage and current inputs with respect to their phase relationships. Furthermore correct settings of the meter must be programmed such as voltage input, CT ratio, and system configuration.

The above factors as a consequence of poor or lack of following standards and correct procedures will cause potential errors in readings.

In overcoming reading errors below 100Amp, there are options that can be considered as opposed to using standard CT’s per the above table.

Direct Connect Meters with a current input of 0-100 Amps with the metering designed to an accuracy Class of 0.5S.

Installing direct connect meters with Accuracy Class 0.5S will overcome reading error problems at low loads. SATEC’s EM133 with direct connect for 0-100Amps provides the ideal solution, with  readings down to 50 milliamps. The SATEC Meter provides accurate readings over the dynamic range in addition to the linearity of the measurements. SATEC’s EM133 has NMI certification for use in Energy Billing and is generally recommended for NABERS applications. Accuracy Class 0.5S is designed for measurement accuracy from 1% to 120% of rated current. Whereas Accuracy Class 1 and 0.5 is designed for measurement accuracy from 5% to 120% of rated current. The SATEC EM133 exceeds the measurement performance for Class 0.5S metering.

High Accuracy Current Sensors (HACS) with a resolution down to 0.1% of current or better. The HACS are designed for use with SATEC metering hardware. The current range includes HACS designed for 0-100A, 200A, 400A, 800A, 1200A, 2000A, 3000A. SATEC designed current sensors can be used with Models EM132, EM133, PM130EH, PM135EH, BFM136, PM172, PM175, PM180 & ezPAC SA300 when ordered as HACS input version.

The SATEC EM133 is designed in a compact Din Rail Mounted package and offers the smallest footprint measuring 125 x 90 x 75mm for a multifunction energy meter designed for NMI approval.

For further information, please contact SATEC (Australia) Pty Ltd.

NMI Approved EM133

Din Rail Electricity Meter designed & tested to NMI M 6 -1 for NMI Pattern Approval requirements by SATEC (Australia) Pty Ltd

Electricity meters used for sub-metering, are now required to comply with NMI testing standards for energy meters. From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a multifunction Din-Rail mounted electricity meter designed to meet NMI Pattern Approved kWh meter suitable for sub-metering and use for trade in the Australian Market.

The SATEC Model EM133 incorporates many advance features and offers extensive capability’s in a compact design. SATEC has set the standard for a NMI designed DIN Rail Energy meter design achieving many challenging requirements of the NMI standard including 12KV Impulse testing.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Daily/Weekly/Monthly/Quarterly Energy Profiling
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

The first Din-Rail mounted Electricity meter designed to comply with NMI Pattern Approval requirements

Electricity meters used for sub-metering, are now required to comply with NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted electricity meter NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market having a broad range of product features.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

Metering Accuracy Class “S” “There is a Difference”

Electricity Energy Metering Accuracy is an important step in ensuring the integrity of a Billing System. Anomalies in measurements can over a period of time create hundreds or thousands of dollars in errors. The accuracy of an Energy meter is dependent on multiple factors such as the load of the network (full load conditions will be more accurate than partial load) as well as the power factor of the system, accuracy of the Energy Meter and other factors.

ACCURACY

The accuracy depends on the design and build quality of the meters input channels, a higher quality measuring meter will provide better accuracy but will increase the price of the product. Some major parameters impacting the accuracy measurement of an Energy Meter:

1)       Fluctuation of the reading value, represented in percentage % from the actual value (reading)

2)       A fixed error (“noises”) normally represented as percentage from full scale (FS) as its constant value

3)       For Power & Energy measurements the phase shift between the voltage and the current also impact the accuracy, since the power equals voltage multiplied by current multiplied by the cosine of the phase angle.

4)       The phase angle accuracy is represented in degrees in current transformers creating additional errors to energy/power meters.

ACCURACY METERING STANDARDS

Since Accuracy depends on the load of the system, IEC/AS have developed different standards to define accuracy under different load conditions, known as “Accuracy Class”

IEC/AS Standard 62053-11 covers Accuracy Class 0.5, 1.0 & 2 for electromechanical meters for active energy (watt-hours) which means the accuracy as a percentage from reading based on full load conditions and unity power factor. However the accuracy deteriorates under lower load conditions, power factor less than unity along with the presence of harmonics.

IEC/AS Standard 62053-21 covers Accuracy Class 1.0 & 2 for static/electronic meters for active energy (watt-hours) which means the accuracy as a percentage from reading based on full load conditions and unity power factor. However the accuracy deteriorates under lower load conditions, power factor less than unity along with the presence of harmonics.

IEC/AS Standard 62053-22 covers a higher Accuracy Standard of 0.2S and 0.5S for static/electronic for active energy (watt-hours) providing a higher “Accuracy Standard” under full load conditions and unity power factor in addition to better accuracy readings at much lower load currents, power factor conditions less than unity along with the presence of harmonics.

SYSTEM ACCURACY vs. METER ACCURACY

The Accuracy of any Energy Measurement System is the summary of its components i.e. Energy Meter plus Current Transformer (CT). With the exception if a direct connected meter is utilised.

IEC/AS Standard 60044-1 defines the accuracy classes for CT’s. Subject to the loading of the CT, accuracy variances will occur from the quoted accuracy class such as errors due to phase errors based on specified load impedance. Current Transformers accuracy are defined as per IEC 60044-1, Classes 0.1, 0.2, 0.5, 1 and 3. In addition Accuracy Class 0.2S and 0.5S standards for CT’s apply for higher performance accuracy. The class designation is the measure of the CT’s accuracy. The ratio (primary to secondary current) error of a Class 1 CT is 1% at rated current; the ratio error of a Class 0.5 CT is 0.5% at rated current. Installing an Energy Meter with Accuracy Class 0.5S as a minimum requirement can assist in ensuring the Energy monitoring application has a high degree of accuracy when taking into account the accuracy performance of the CT’s involved.

RETURN ON INVESTMENT

SATEC (Australia) Pty Ltd       www.satec-global.com.au       Phone (02) 4774-2959       Fax (02) 4774-0249

NMI Approved EM133

The first Din-Rail mounted Energy meter with clock for kWh meter having NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted with a clock for date/time stamping, NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

The first Din-Rail mounted Energy meter with on board memory and data logging for kWh meter having NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted with memory capbilities, NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

The first Din-Rail mounted Energy meter with RS485 communications for kWh meter having NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted with RS485 comunications, NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market.

Product features include:
• Compact Din Rail Mounted
• Accuracy Class 0.5S
• Multifunction Metering
• Rated up to 100Amp
• Data Logging
• Event Logging
• Date/Time Stamping
• LCD display
• Relay Output
• Pulsed output (Energy Readings)
• RS485 Communications
• Ethernet Module Option
• Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

The First Din-Rail Mounted kWh Meter Direct Connect 0-100A with NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted 0-100A direct connected, NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product pageemail us or call us on  (02) 4774-2959.

NMI Approved EM133

The First Din-Rail Mounted Multifunction kWh Meter with NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI testing standards for energy meters.

From January 2013, the exemption for energy meters used for trade (billing customers) was lifted, meaning energy meters used in residential, commercial and other businesses environments must now have NMI (National Measurement Institute) approval.

SATEC (Australia) Pty Ltd is the first manufacturer of a multifunction din-rail mounted, NMI Pattern Approved kWh meter suitable for sub-metering for the Australian Market.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • Rated up to 100Amp
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

To find out more, please visit the product page, email us or call us on  (02) 4774-2959.