Metering & Sub Metering
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Identify Utilities to be monitored (electricity, gas, water, solar)
Power Quality of incoming feeds
Identify Sub Metering Requirements across Distribution Boards, Sub Distribution, RPP’s,
Bus Bar, Panel Boards and MID
Granular monitoring of payloads
Visualisation and reporting, scalable beyond kWh and CO2
MPL define 5 Key Steps in the implementation of an effective Metering & Monitoring solution:
MPL Ready to Run Metering Enclosure measuring 288 circuits
To further elaborate, the first two steps focus on measurement and reporting of utilities at the building point of entry whilst also establishing the quality of voltage supplied by public electricity networks in accordance with BS EN 50160. The third step monitors energy distribution across the estate focusing on plant equipment and sub distribution level, whilst step four identifies when and where energy is consumed, focusing on the granular monitoring of individual payloads.
MPL Meter Types MPL offer four generic groups of PMD
(Performance Monitoring Device), Meters:
• Power Quality Analysers
• PMD including Power Quality and
Residual Current Monitoring (RCM)
• PMD Sub Metering
• PMD MID
Meter Standards & Certification
• BS EN 50160: Power Quality
• IEC 61557-12 (PMD)
• IEC 62053-21/22/23 (kWh)
• BS EN 61000 Harmonics
• BS EN 50470 Measuring Instrumentation
Directive (MID)
• Underwriter Laboratories UL
Metering Strategy
Tier 1:
Utility Monitoring focuses on power quality analysers and the metering on the main incoming feed/point of common coupling. These power quality meters perform as a multifunction network analyser, actively assisting the electrical system to run continuously and at optimised rates.
With this system, clients can improve overall efficiency of the facility, reduce production losses, optimise running costs whilst reducing maintenance costs. An analyser will measure all electrical parameters and analyse the quality of energy.
Assess Existing Utility Meters (electricity, gas and water), identifying communication protocols (i.e. pulse output), location,
and accessibility.
Solar Monitoring to maximise operational efficiencies and provide early detection of any failures. To achieve this, MPL monitor the AC power at the inverter, DC voltage and current at the combiner or recombiner boxes as well as Power Quality metering of electricity loads consumed by the estate and potentially fed back to the grid.
Tiers 2 and 3:
Sub Metering utilising PMD metering across plant equipment and sub distribution. Monitoring of energy data, electrical parameters, basic power quality (Total Harmonic Distortion THD) and MID.
Tier 4:
Monitoring of Payloads utilising PMD metering. Monitoring of energy data (kWh), electrical parameters, basic power quality (Total Harmonic Distortion THD) and MID.
Individual Circuit Monitoring
MPL offers a scalable and modular approach to address multi circuit power and energy management for both AC and DC applications (AC to 6000A, DC to 5000A). This truly market neutral solution is suitable for single and three phase circuits, delivering centralised reporting of Volts, Amps, kVA, kW, kWh and PF and Power Quality of the incoming feeds.
Key features include:
• Scalable, pre-configured ‘ready to run’ enclosures to reduce on-site installation costs, space, and time. The enclosures can be
deployed in a master/slave arrangement to facilitate the monitoring of multiple panels across or between floors
• Industry leading accuracy – Class 0.5 for global measurement chain (10-120% of load) – IEC 61557-12 refers
• Non-invasive current sensor technology utilising ‘plug and play’ connectivity into multiple current measurement modules to
simplify site installations
• EN50160 certified voltage module per feed for PQ of incoming feeds
• Centralised data collection via the N-GEN Gateway datalogger (single IP address)
• Choice of SNMP, MQTT, SIM, LAN, or Wi-Fi outputs
• Instantaneous alerting and alarming against user defined thresholds for any monitored parameter.
Visualisation & Reporting
MPL has developed its N-GEN management platform to provide the visualisation of highly accurate real time and historical reporting information combined with advanced alerting and alarming of any measured power, energy, or environmental parameter. Intuitive ‘single click navigation through tiered views enabling the user to navigate from global estate overviews through to more granular data relating to individual sites, buildings, circuits, or payloads in a matter of seconds.
N-GEN Estate provides the visualisation of the EPMS infrastructure (site wide views of utilities, total consumptions, plant equipment, sub distribution and payloads), offering unrivalled levels of scalability, functionality, and reporting.
