For installers: The information required to select the correct Wattwatchers Auditor model
Wattwatchers technology is flexible and can be used in a variety of use cases. Once you have the use-case nailed, it's important to select the right Auditor.
Wattwatchers technology can monitor loads and generation from residential scale through to industrial-scale, and has options for switching control. All Wattwatchers technology comes with communication in-built, monitoring in real-time, is 1% accurate, two (2) year warranty, and has all data available via the Wattwatchers API.
The models are in two key parts of the Family:
Monitoring & Control hardware
The Auditor family below has models for 4G and WiFi. The six channel models use Split-core CT's and the 3RM uses flexible Rogowski coils to accommodate large loads up to 3,000A. These model can deliver on many use-cases including solar LGC creation for systems less than 750MWh.
| Model | Comms | Circuits | CT rating | Switches | Links |
| 6M | 4G | Six | 60A-600A | None | |
| 6M+3SW | 4G |
Six |
60A-600A | Three | |
| 6W | WiFi | Six | 60A-600A | None | |
| 6W+3SW | WiFi | Six | 60A-600A | Three | |
| 3RM | 4G | Three | 3,000A | None |
National Measurements Act 1960 mandated utilising NMI-approved technology for trade in Australia that includes 'behind-the-meter' energy billing or power-purchase-agreement (PPA).
It's illegal to use anything (from Wattwatchers inventory) but the Auditor 6M+One for trade or billing purposes.
Billing and Large LGC hardware
For solar solar generation over 750MWh/year and electricity billing the Clean Energy Regulator and National Measurement Institute (NMI) require devices to be 'pattern-approved'. For the billing of solar and other assets its quite common for there to be two separate hardware solutions - one for billing and the other for monitoring.
The Wattwatchers Auditor 6M +One is a single package that helps avoid hardware duplication because it supports:
- Billing (off-market) - which requires an NMI pattern-approved meter
- Monitoring - granular, real-time data that supports solar performance management and customer engagement.
Note: The NMI-pattern-approved channel data is only available via the Wattwatchers API and integrated billing partners.
CT's must be used on the Auditor if real-time data is required and if you plan to use Wattwatchers applications.
Auditor 6M+One - Single Phase
- It’s up to 7 single phase meters!
- One single-phase billing certified channel measuring up to 63A (NMI-pattern approved)
- You can add up to six channels of monitoring with additional Wattwatchers CTs, to support solar performance management and the broader customer energy experience.
Auditor 6M+One -3 Phase
- It’s up to three 3-phase meters!
- One 3-phase billing certified channel (NMI-pattern approved)
- Add up to two more 3-phase monitoring points with the additional Wattwatchers CTs, plus support solar performance and energy management.
Note: There are two varieties of the 6M+One 3-phase
For an NMI-pattern approved channel of up to 100A per phase: uses PMC-340BA
For an NMI-pattern approved channel of greater than 100A and up to 600A per phase: uses PMC-340BB
Read the following article to decide which variety that you need.