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Pattern Approved Electricity Metering – Overcoming the “Impossible” is “Possible”

Many sceptics thought it was impossible to achieve Pattern Approval for a Multifunction Electricity Meter designed in a compact DIN rail footprint. In fact many doomsday forecasters predicted electrical switchboard enclosures, distribution boards, riser/cupboard spaces for multifunction metering would have to be increased in size to accommodate larger electrical metering to be in compliance for Energy Meters per NMI M 6-1.

SATEC’s achievements in technological R&D design for Pattern Approved Metering in the Australian Market sets the precedent in design and functionality for multifunction electricity metering in a DIN Rail Format.

Space is a premium in today’s world for metering, that space limitation for new or existing facilities such as Data Centres, Commercial Buildings, Apartments, Shopping Centres, Marina’s, Caravan Parks, etc. can create many challenges. SATEC’s compact design and versatility provides viable solutions overcoming many design install problems.

Electrical designers, switchboard builders, consultants, electrical contractors, end users can rest at ease that the implications implied when NMI made the announcement as of January 1ST 2013 that potentially design, installation, sizing of switchboards, etc. would  create undue headaches is all but a myth. Solutions offered by SATEC for energy metering complying with NMI M 6-1 puts aside any of these fears or concerns on installation problems.

Managing Director Ron Davis of SATEC (Australia) Pty Ltd commented that our objective from the beginning for any NMI Pattern Approved metering product was to achieve a foot print that was small but also could be retrofitted with existing designs which SATEC offered. These goals and targets put considerable challenges on the SATEC engineering design team in achieving the smallest footprint for a multifunction energy meter complying with NMI M 6-1.

Additional benefits with the SATEC foot print being compact that it allows the meter to be retrofitted with other manufactures metering already installed that need replacing due to failure and/or not complying with the latest standards in Australia.

Other factors that were required by SATEC was to maintain and enhance the functionality of the electrical metering product. These included accuracy Class 0.5S, data logging, event logging, date/time stamp, communications including RS485 and Ethernet TCP/IP with industry standard open protocol to name a few.

SATEC released the EM133-AR Din Rail Mounted Direct Input 0-100Amp version in April 2014, followed by the release of the EM133-AR 5A CT Input version in December 2014. In January 2015 following extensive engineering excellence and learning experience SATEC released the NMI Pattern Approved Branch Feeder Monitor BFM136 for measuring multiple circuits.

The BFM136 exceeds expectations for NMI M 6-1 for multi circuit monitoring of electrical circuits designed for measuring either 36 single phase circuits or 12 three phase circuits or a combination of both for up to 36 current inputs using SATEC current sensors/HACS.

Stringent design requirements under NMI M 6-1 ensuring the meter will withstand such needs as 12KV impulse, 4KV isolation, creepage distances, protective class, temperature, humidity, current overload, clock drift accuracy, dust, shock and vibration, amongst many other metrology testing requirements per NMI M 6-1. This ensures the energy meter maintains its accuracy, performance, repeatability, and reliability of the electricity meter for billing integrity.

All SATEC Metering have a three (3) year warranty, with five (5) year warranty on their accuracy performance. In addition to SATEC’s value added capability SATEC are at the forefront of metering solutions for the Australian market today and into the future.

Contact SATEC (Australia) now to discuss how we can help you.

BFM136 NMI Approved Current Sensors (HACS)

SATEC Current Transformers NMI Tested

SATEC (Australia) are the first manufacturer and supplier of NMI approved current transformers for use with their SATEC BFM136 Branch Feeder Monitor. These specially designed current sensors (HACS) are used with the NMI approved Electricity Meter SATEC BFM136.

The Branch Feeder Monitor provides for measuring of up to 36 single phase electricity circuits or 12 three phase circuits or a combination of up to 36 inputs

Branch Feeder Metering or Multi-Circuit Metering technology with NMI approval for electricity billing sets the standard in Energy Metering design capabilities.

Current Sensors by SATEC are designed per IEC/AS60044-1 and together with NMI approval with the BFM136 provide the first combined solution for energy metering and current transformer/current sensors (HACS).

Find out more about the BFM136 Branch Feeder Monitor and current sensors (HACS).

BFM136 NMI Approved Energy Meter

NMI Patterned Approved Multi Circuit Metering BFM136 Monitor 36 Electrical Circuits

SATEC continue to set the standard in Energy Metering design with the release of the NMI Approved BFM136 Branch Feeder Monitor, suitable for use on multiple electrical circuits. The BFM136 is suitable for use for up to 36 single phase circuits or 12 three phase circuits or a combination of both for up to 36 current inputs using SATEC current sensors/current transformers (HACS).

Many advances in metering technology based on metrology specifications are both complex and technical in the design achievements. The “National Measurement Institute of Australia” provides the legal basis for approving metering for use in trade requiring pattern approved designs complying with NMI technical and metrology performance criteria’s per NMI M6-1.

The unique design for use as a Pattern Approved Meter for multiple electrical circuits is the first meter of this design approved for NMI use as an electricity meter. The impact of such a design provides a cost effective solution for installations both existing and new along with space savings and labour cost reductions adding to the cost analysis benefit of the BFM136.

The SATEC BFM136 provides Energy Metering data including time of use (TOU) tariff billing, power factor, frequency, kilowatts, kvars, voltage, current as well as maximum demand metering.

SATEC’s current sensors/current transformers (HACS) can be extended up to 200 metres from the BFM136 providing for installations where loads are located in difficult areas where space is limited for locating the energy metering device.

Find out more about the NMI Approved BFM136 Branch Feeder Monitor.

EM133 NMI Approved Electricity Meter

NMI M6 12KV Impulse for Electricity Meter

One of the many technical and metrology requirements for obtaining pattern approval and verification from The National Measurement Institute (NMI) for any active-energy electricity meter to be used for trade is for the energy meter to pass the 12KV impulse test. This stringent requirement places further design challenges especially when the energy metering is designed in a compact case. These requirements apply to all watt-hour meters used for single phase or three phase (polyphase) installations.

Impulse Voltage test are per IEC/AS 62052.11 and SP-Method 1618, specified values for impulse voltage and stored energy come from SP-Method 1618 (Impulse Voltage 12KV +0%, -15%) (Stored Energy 9.0J +/- 1.0J) these values are higher than values per IEC/AS62052.11.

SATEC (Australia) has overcome many barriers in obtaining NMI approval for their Din Rail Energy Meters, setting the standards in NMI metering for compact metering designs. Installations for Commercial Buildings where multiple tenant or sub-metering is required must now be a NMI approved meter where electricity billing for trade applies.

Find out more about the NMI Approved EM133 Smart Energy Meter.

EM133 NMI Approved Electricity Meter

Electrical Metering Internal Clocks “NMI Compliant”

Electrical Metering, Electricity Meters, Energy Meters, Multifunction Metering and any Power Metering incorporating internal clocks for date/time stamp resolution must comply within standards to ensure the clock time does not drift.

Under “National Measurement Institute” NMI M 6-1 Clause 6, any solid state internal clock used for electricity meters and load control must be tested and approved. This is to ensure that the internal clock of the Electricity Meter does not drift outside a specific tolerance within a 30 day period under specific temperature specifications.

SATEC’s Energy Metering solutions approved for trade under NMI comply fully with the performance/operating criteria per NMI M 6-1 in addition to IEC/AS62054.21 as outlined in the standards. Internal Clocks for Energy Metering are a critical element in ensuring the system accuracy for billing to customers is accurate, especially when time of use (TOU) Tariff metering is used for commercial, sub-metering and tenant metering.

Find out more about the NMI Approved EM133 TOU Smart Energy Meter. View the EM133 TOU Smart Energy Meter Datasheet.

Data Centre Energy Metering

Data Centre Load Management Energy Metering

NABERS Rating for Data Centre has been introduced to encourage improved environmental performance within the commercial built arena, improving innovation and outcomes for reducing energy consumption and reduced green-house gas (GHG) emissions. SATEC’s solution with the BFM136 for multiple circuit metering leads the market in performance metering.

The BFM136 can meter up to 36 single phase electrical loads, or 12 three phase loads or a combination of both using SATEC current sensors (HACS) in a compact Din Rail or Wall mounted design. Together with SATEC current transformers/HACS (current sensors) monitoring of loads can be as low as 50 milliamps up to 3000 Amps providing a metering solution unequal in low load monitoring performance. In addition, the BFM136 has been designed to withstand 12KV impulse testing as required by “National Measurement Institute of Australia” NMI.

SATEC Metering is used in many electrical metering applications, including industrial and commercial smart metering for energy profiling, load management and electricity billing solutions.

Find more about the BFM136 Multi-Channel Energy Meter. View the BFM136 Multi Channel Energy Meter Datasheet.


BFM136 Branch Feeder Meter

Electricity Multi-Circuit Metering Technology Saves Space and Installation Time As Much As 75%

SATEC’s multi-circuit metering technology can reduce space and installation time by as much as 75% when the BFM136 is installed when compared to discrete metering installations. The use of technology advances provides a reduction in the size of panel requirements not only for new installations but also for retrofitting to existing sites where space is a premium.

SATEC’s BFM136 metering technology provides complete multifunction-metering capabilities including Time of Use (TOU) for tariff billing, data logging, event logging with date/time stamping.

SATEC’s design provides metering for up to 36 current inputs via SATEC current sensors (HACS) configurable for 36 single phase circuits or 12 three phase circuits or a combination of both.

BFM Branch Feeder Meter

Branch Feeder Metering Passes 12KV Impulse Test

SATEC’s BFM136 Branch Feeder Metering Technology suitable for measuring up to 36 current inputs has recently passed the 12KV impulse test requirements, this is one of many technical design requirements and prerequisites to obtain local approval standards to be used as a billing/trade meter for the Australian market.

The BFM136 is a compact design for measuring up to 36 current inputs via SATEC current sensors (HACS) configurable for 36 single phase circuits or 12 three phase circuits or a combination of both for up to 36 current inputs.

Space saving and installation time can be reduced by upwards of 75% with installation of the BFM136.

With the advantage of reading multiple single phase and/or three phase circuits’ communications to BFM136 can be via RS485 or Ethernet TCP/IP for third (3rd) party software platforms or via SATEC free license software (PAS).

SATEC can also provide their web based licensed software package eXpertPower for electricity billing, energy management and power quality forensic analysis.

5A Current Transformer Input Energy Meter having NMI Pattern Approval

Electricity meters used for sub-metering, are now required to meet NMI specifications and testing compliance for use as a legal product for electricity billing trade.  SATEC (Australia) Pty Ltd is the first manufacturer of a din-rail mounted energy meter with RS485 communications having input via 5A Current Transformer. View the EM133 Datasheet.

Product features include:

  • Compact Din Rail Mounted
  • Accuracy Class 0.5S
  • Multifunction Metering
  • CT Input 5A
  • Data Logging
  • Event Logging
  • Date/Time Stamping
  • LCD display
  • Relay Output
  • Pulsed output (Energy Readings)
  • RS485 Communications
  • Ethernet Module Option
  • Expanded I/O Options

For more information, please email SATEC (Australia) Pty Ltd or call (02) 4774-2959.

How Harmonics Are Generated And Why They Should Be Regularly Monitored

Harmonics is an important issue in the modern electrical network, becoming increasingly more important as more switching and smart loads are present.

Harmonics must be monitored regularly in order to verify its level and prevent potential failures or high losses. The use of SATEC meters simplifies the operation by measuring all required parameters from the fundamental THD values, through TDD and K-Factor as well as individual harmonics. With the custom control logic, the monitoring becomes an automatic process.

Find out more about Harmonics Monitoring >>