There is a Technical Rules exemption which applies for eligible inverter systems and it contains two parts which specify modified Technical Rules requirements which would otherwise apply once the aggregate installed connection point capacity is in the range from 30 kVA to 1 MVA.
Type certified AS 4777 and IEC 62116 compliant inverters have required performance characteristics and may qualify for all, or part, of the 30 kVA to 1 MVA inverter protection requirements exemption on the Technical Rules page.
- Duplication of protection
Given the additional built-in protection functionality in eligible inverter systems, the Rules requirement for duplicated connection point protection does not apply at or below 1 MVA.
- Earth fault protection (or NVD) for low voltage (LV) inverter connections
The exemption may also remove the requirement for earth fault protection for eligible LV (240 V and 415 V) connected systems rated at or below 1 MVA.
Other small generator systems rated at greater than 30 kVA, including other inverters connecting to the distribution system, maintain the existing requirement to meet section 3.6 of the Technical Rules. If you have any concerns in relation to this or wish to explore case-by-case exemptions from these Rules, please get in touch with us, preferably early in the connection application process.
We continue to pursue options to connect generator systems to the network safely, reliably and affordably.