The Wattwatchers 6M+One can be used for power purchase agreements (PPAs), other off-market billing, large-scale generation certificates (LGCs), meeting NABERS and Green Star requirements, and more.
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Contents
Overview of each 6M+One package
Other features that make the 6M+One stand out
6M+One Use Case
The Wattwatchers Auditor 6M+One supports use cases where off-market trade in electricity ($/kWh) is required or for LGC creation over 750MWh per annum. The most common examples are behind-the-meter solar power purchase agreements (PPAs), embedded networks and electric vehicle (EV) charging.
Features include,
- Real-time monitoring
- It can be used in single or multi-phase sites
- Billing certified data (NMI Pattern-Approved)
- Interval data from the Auditor
- Cumulative data from the PMC meter
- 4G communication
- All data accessible via API and 3rd party apps
Regulatory requirement: In Australia, it is a regulatory requirement that a meter with National Measurement Institute NMI-M6 Pattern-Approval is used for 'trade' which includes the selling of electricity.
The Auditor and CET meter has the same Class 1 (+/- 1%) accuracy as pattern-approved billing meters, but NMI-M6 has a broader set of requirements.
6M+One Data and Comms Overview
All data gets sent to the cloud via 4G cellular communications. The photo below is to show you a quick overview of where the data is going from each device.
PMC meter: Data from the PMC meter is only accessible via API and third-party apps.
6M+MB: Monitoring CTs connected to the 6M+MB are accessible via the Wattwatchers Fleet app, Dashboard, API server, and third-party apps. This can be used to view live data on the Wattwatchers applications for a quick overview of the site.
6M+One Hardware Overview
The 6M+One pack consists of two main hardware components, the 6M+MB (Modbus inputs) and the CET PMC meter.
6M+MB (Modbus inputs)
The 6M+MB is the main communication device that sends data to the cloud via 4G. The 6M+MB can also be used with 6x monitoring CTs for live monitoring on the Wattwatchers applications (Fleet view and dashboard). The 6M+MB has the same hardware as the regular 6M with the main difference being the additional Modbus input for the PMC meter. It can be used with single-phase or multi-phase power and is Din mountable for easy clip on into a switchboard
CET PMC meter
The CET PMC is an NMI M6 Pattern Approved meter that sends its data to the 6M+MB via Modbus. It comes in three types listed below with the option of single phase or multiphase and is Din mountable for easy clip on into a switchboard.
The PMC meter has an LCD screen for on-site display. The PMC meter also has its own internal storage and is independent of the 4G comms, this means if 4G drops out, the PMC meter will still continue to accumulate data internally that can be read on-site.
Important note regarding PMC data: The data from the PMC meter is only available from the Wattwatchers API and our integrated billing partners. You can only view limited instantaneous readings from the PMC meter using the onboarding tool which is designed mainly around debugging.
Overview Of Each 6M+One Package Option
6M+One comes with the choice of three different PMC meters depending on your site requirements. Select one that meets your requirements to learn more.
Option 1. 6M+One using the PMC 220
This option is used when you want to use the PMC meter to measure a single-phase circuit up to 63A.
Option 2. 6M+One using the PMC 340-BA
This option is used when you want to use the PMC meter to measure a three-phase circuit and the cables are less than 35mm2 (CSA) and do not exceed 100A per phase.
Option 3. 6M+One using the PMC 340-BB
This option is used when you want to use the PMC meter to measure a three-phase circuit and you need a CT option rather than a direct connection option. Yellow billing CTs can Fit cables up to 80mm in diameter and come with either 600A CTs or 1500A CTs.
6M+One Using The PMC 220 (Direct connect)
This option is used when you want to use the PMC meter to measure a single-phase circuit up to 63A.
PMC 220 Information
- Measures single-phase loads up to 63A
- Fits cables up to 25mm2 (CSA)
- Direct connection/ Passthrough method
- NMI M6 Pattern Approved
- Din mountable
- Energy data from the PMC can only be viewed via API or 3rd party apps
- Real-time energy monitoring for up to 6x single-phase loads or a mixture of three-phase and single-phase loads up to 600A
- Data from the monitoring CTs can be viewed via the Wattwatchers fleet app, Dashboard, API server, and third-party apps.
Note: 6M+MB monitoring CTs can NOT be used for NMI billing.
6M+One Using The PMC 340-BA (Direct connect)
This option is used when you want to use the PMC meter to measure a three-phase circuit and the cables are less than 35mm2 (CSA) and do not exceed 100A per phase.
PMC 340-BA Information
- Measures three-phase loads up to 100A (per phase)
- Fits cables up to 35mm2 (CSA)
- Direct connection/ Passthrough method
- NMI M6 Pattern Approved
- DIN mountable
- Real-time energy monitoring for up to 6x single-phase loads or a mixture of three-phase and single-phase loads up to 600A
- Data from the monitoring CTs can be viewed via the Wattwatchers fleet app, Dashboard, API server, and third-party apps.
Note: 6M+MB monitoring CTs can NOT be used for NMI billing.
6M+One Using The PMC 340-BB (CT connect)
This option is used when you want to use the PMC meter to measure a three-phase circuit and you need a CT option rather than a direct connection option. Yellow billing CTs can Fit cables up to 80mm in diameter and come with either 600A CTs or 1500A CTs.
- Measures three-phase loads up to 1500A (per phase)
- Fits cables up to 80mm in diameter
- Measures energy using yellow billing CTs only
- Produces cumulative data
- NMI M6 Pattern Approved
- DIN mountable
- Data is only accessible via API and third-party apps.
- Real-time energy monitoring for up to 6x single-phase loads or a mixture of three-phase and single-phase loads up to 600A
- Data from the monitoring CTs can be viewed via the Wattwatchers fleet app, Dashboard, API server, and third-party apps.
Note: 6M+MB monitoring CTs can NOT be used for NMI billing.
Other Features That Make The 6M+One Stand Out
- Single Phase: Is 7 meters in one package! Six monitoring channels + one billing channel
- Three-Phase: Is three meters in one package! Two 3-phase monitoring points up to 1500A + one three-phase billing certified channel
- 4G comms is built-in - we provide multi-carrier (roaming) SIM that selects the strongest available reception ranging from Telstra, Optus, and Vodafone; and is also able to roam in over 150 countries for you
- Comes bundled with the Wattwatchers Toolkit and mobile application Mydata.energy
- Compact form factor - 2 DIN slots (35mm) wide for 6M + 2 additional slots for the single-phase CET meter and 6 additional slots for 3-phase CET meters
- Almost no communications cabling (a short link connects the Auditor with the PMC meter)
- 1% accurate with 25 days internal logging capacity to ensure complete data
- Over-the-air device management includes firmware upgrades and remote correction of common installation errors (saving extra truck rolls)
Contact Us
Need more information or want to talk to a member of our sales team? Contact us today
Further readings
Auditor 6M+One Selection and Pre-Installation Comprehensive Guide (for Designers and Engineers)
A6M+One Comprehensive Installation Guide