Satec power meters from the sole distributor for Africa
National Power is the sole distributor of Satec products for Africa. We supply, install and support the full Satec range: power meters, smart meters, power quality analysers, multi-circuit meters and the ExpertPower energy management platform.
Satec has designed and manufactured power metering equipment since 1987 and exports to more than 60 countries. Its meters are used by utilities, mines, industrial plants and commercial property owners wherever accurate, reliable electrical measurement matters.
Satec metering covers everything from a single sub-meter to a complete smart metering system: meters, current sensors, communication gateways and software, with remote reading, time-of-use tariffs and automated tenant billing.
Why Satec
Accurate, connected and built for harsh sites
| Strength | What it means for you |
|---|---|
| Revenue-grade accuracy | Every Satec meter is at least Class 0.5S for kWh (IEC 62053-22), and the PRO, PM17x, PM180 and EM720 ranges reach Class 0.2S. Satec also complies with IEC 61557-12 for power metering and monitoring devices. |
| Class A power quality | The PRO series, PM180 and EM720 are Class A power quality analysers to IEC 61000-4-30, producing EN 50160 reports, harmonics, flicker, dips, swells and waveform records. |
| Open connectivity | Modbus, DNP3, IEC 61850, IEC 60870-5-101/104 and BACnet, with Ethernet, RS485, cellular and PROFIBUS options, so meters plug straight into SCADA, BMS and ExpertPower. |
| Durability | Rated for −40 °C to 70 °C and up to 98% humidity, with galvanic isolation up to 4 kV RMS and 12 kV impulse. Suited to mines, substations and plant rooms. |
| Modular design | Add communication, digital and analogue I/O modules as your needs change, instead of replacing the meter. |
The Satec range
Which Satec power meter do you need?
Satec meters are grouped into families. The table gives a quick guide; we will help you choose the right model and options for each metering point.
| Range | What it is | Typical use |
|---|---|---|
| PM13x / EM13x series PM130 PLUS, PM135, EM132, EM133 |
Multifunctional 3-phase power meters. Class 0.5S, harmonics to the 40th, time-of-use tariffs, up to 8 MB data logging. Panel or DIN-rail mounting. | Sub-metering, feeder and motor monitoring, SCADA integration at an affordable price. |
| PRO series PM335, EM235 |
Satec’s newest power meter and power quality analyser. Class 0.2S, Class A Ed. 3.1 power quality, IEC 61850, dual Ethernet, 16 GB memory, waveform capture, harmonics to the 63rd. DC metering via Hall effect sensors. | Main incomers, critical plant, digital substations and renewable (AC/DC) installations. |
| BFM-II / BFM136 Branch feeder monitor |
Multi-circuit meter: up to 18 three-phase or 54 single-phase circuits in one device, Class 0.5S, time-of-use, optional digital fault recorder. | Multi-tenant billing in shopping centres and office parks, distribution boards, data centres. |
| PM17x series PM172, PM174, PM175 |
Class 0.2S power meter (PM172) and power quality analysers (PM174/PM175) with EN 50160 / IEEE 1159 reporting, flicker and waveform recording. | Power quality investigations, supply-quality compliance and industrial monitoring. |
| PM180 Power quality analyser |
Modular Class A Ed. 3 analyser that can also act as a fault recorder, sequence-of-events recorder and phasor measurement unit, with IEC 61850. | Substations, large industrial and mining networks, grid connection points. |
| EM720 / EM920 eXpertMeter |
A Class 0.2S revenue meter and Class A power quality analyser in one device, with transformer and line loss calculation. | Utility and bulk-supply metering points. |
| Accessories | HACS high-accuracy current sensors (10 A to 3,000 A, cable runs up to 200 m, no shorting blocks), DC Hall effect sensors, RGM180 touch-screen displays, ETC-II gateways and PAS configuration software (free with every meter). | Retrofits, remote metering, DC systems and local display. |
Full specifications are in the Satec product catalogue (PDF).
Satec meter range
The most commonly used Satec power meters
These are the most widely used meters in the Satec range, from multi-circuit tenant billing to Class A power quality and grid monitoring. National Power supplies, installs and supports every one. Download the brochure for each model.
BFM-II | PM135 | PM175 | PM175 PRO | PRO Series PM335 / EM235 | PMU PRO
Multi-circuit meter
Satec BFM-II branch feeder monitor
Meters up to 18 three-phase circuits from one modular unit, at Class 0.5S revenue accuracy with time-of-use tariffs. Ideal for tenant billing in shopping centres and office parks, distribution boards and substation feeders, in new builds and retrofits.
Compact power meter
Satec PM135 multi-function power meter
A compact, cost-effective three-phase power meter for panels, feeders and SCADA systems. Class 0.5S accuracy, time-of-use tariffs and harmonic analysis, in a standard 4″ round or 92 × 92 mm cut-out that fits existing switchboards.
Established model
Satec PM175 power quality analyser
A Class 0.2S power meter with EN 50160 power quality recording, waveform capture and harmonics to the 50th order. National Power continues to support installed PM175 meters. For new installations, its successor, the PM175 PRO, is the current model.
Current model · Class A
Satec PM175 PRO power quality analyser
The PM175 PRO keeps the PM175’s panel format and adds what the PM175 does not have: Class A quality of supply analysis to IEC 61000-4-30 Ed. 3.1, and IEC 61850 communication for digital substations. Class 0.2S accuracy, dual-port Ethernet and 16 GB of memory.
Advanced AC/DC meter and analyser
Satec PRO Series: PM335 and EM235
Satec’s newest platform: a Class 0.2S meter, Class A power quality analyser and data recorder in one device, measuring both AC and DC. The PM335 is the panel version with a 3.5″ colour display, and the EM235 is the DIN-rail version. IEC 61850, dual-port Ethernet and 16 GB of memory.
Phasor measurement unit
Satec PMU PRO phasor measurement unit
Built on the PRO Series, the PMU PRO measures time-synchronised voltage and current phasors to IEEE C37.118 (P-Class and M-Class) with 1 µs time-stamp accuracy. It gives network operators a real-time view of the grid at substations, grid connection points and renewable plants.
Where Satec meters are used
Satec power meters for mining, industry and commercial property
| Sector | How Satec meters help |
|---|---|
| Mining and heavy industry | Meter shafts, plants, compressors, pumps and ventilation separately; feed live data to SCADA; track power quality and maximum demand across multi-site operations. |
| Commercial property | Multi-circuit BFM meters and ExpertPower bill tenants accurately for electricity, water and gas, with time-of-use tariffs. |
| Utilities and substations | IEC 61850 digital substation support, fault recording and Class A power quality reporting. |
| Renewables, storage and data centres | AC and DC metering of solar PV, battery storage and DC data-centre supplies, before and after conversion. |
From meter to savings
Metering is where energy management starts
A meter on its own only records what happened. National Power turns Satec data into decisions:
- ExpertPower: cloud dashboards, alarms, reports and tenant billing built on your Satec meters.
- Maximum Demand Control: automated control that keeps peak demand below target.
- Monitoring & Targeting: baselines, targets and verified savings, so efficiency gains hold.
Questions
Satec power meters: frequently asked questions
Where can I buy Satec power meters in South Africa?
National Power is the sole distributor of Satec products for Africa. Contact us for pricing, availability and technical advice.
Which Satec meter should I choose?
For general sub-metering, the PM135 or EM133 is usually enough. For main incomers and power quality, choose the PRO series (PM335). For many circuits in one board, use the BFM-II. For substations and detailed power quality investigations, use the PM175 or PM180. We will specify the right model for each point.
Which Satec meters are Class A power quality analysers?
The Satec PRO Series (PM335 and EM235), the PM175 PRO, the PM180 and the EM720 are Class A power quality analysers to IEC 61000-4-30 Ed. 3.1. They record dips, swells, flicker, harmonics and waveforms to the standard that utilities and grid codes require.
Which Satec meters support IEC 61850?
The Satec PRO Series (PM335 and EM235), the PM175 PRO, the PM180 and the PMU PRO all support IEC 61850 for digital substations, with dual-port Ethernet, so they connect directly to substation automation and SCADA systems.
What is the Satec PMU PRO?
The Satec PMU PRO is a phasor measurement unit (PMU) that measures time-synchronised voltage and current phasors to IEEE C37.118 (P-Class and M-Class) with 1 µs time-stamp accuracy. It supports IEC 61850 and is used at substations, grid connection points and renewable plants for wide-area grid monitoring.
Do Satec meters work with ExpertPower?
Yes. ExpertPower is Satec’s energy management platform and reads Satec meters directly, as well as third-party electricity, water and gas meters.
What is a Satec smart meter?
A Satec smart meter is a power meter that communicates. It records energy, demand and power quality and sends the data over Ethernet, RS485 or cellular to ExpertPower, SCADA or a building management system, so meters can be read and billed remotely.
Can Satec meters be added to existing switchboards?
Yes. Split-core HACS current sensors clip around existing cables and need no shorting blocks, which keeps retrofit installation simple and low-cost. We confirm the details during the site assessment.
Talk to us about Satec power meters
Tell us what you need to measure and we will recommend the right Satec meters, sensors and software, then install and commission them. Start with a free energy assessment.