Power conversion equipment

Solar PV audit checklist items

Question and ratingRelevant standards and references

PCE 1 ***IMPORTANT***
Is the solar PV system fully operational at beginning of inspection (i.e., capable of producing electricity), if not is this due to installation defects?

Applicable rating: Needs rectification

AS/NZS 3000:2018 Clause 1.7

PCE 39 ***IMPORTANT***
Is the solar PV system fully operational at beginning of inspection (i.e. capable of producing electricity)?

If not, is this due to external factors and not installation defects?

Applicable rating: No rating is applied

AS/NZS 3000:2018 Clause 1.7

PCE 2
Has the inverter been installed in a location that has a safe distance from other services such as gas bottles etc?

Applicable rating: Needs rectification

AS/NZS 3000:2018 Clause 1.7.2

PCE 33
Has the inverter been installed in a location that has safe access and adequate working space?

Applicable rating: Improvements identified (For information)

AS/NZS 3000:2018 Clause 1.7.2

AS/NZS 4777.1:2024 Clause 2.4

Label 11
Has a shutdown procedure that clearly sets out the steps to safely shutdown the system been placed adjacent to, and visible from, the equipment to be operated in the event of a shutdown?

Where the inverter is adjacent to the switchboard it is directly connected to, the shutdown procedure may be placed within that switchboard.

Where PV array disconnectors have been used an additional black on yellow sign stating "WARNING: PV ARRAY DC ISOLATORS DO NOT DE-ENERGIZE THE PV ARRAY AND PV CABLES" must be placed with the shutdown procedure.

Applicable rating: Improvements identified (For information)

AS/NZS 4777.1:2024 Clause 6.2

AS/NZS 5033:2021 Clause 5.7

PCE 5A
Enter the output reading … Kw(p).

Applicable rating: No rating is applied

Not applicable

PCE 5B
Enter the output reading at … am/pm.

Applicable rating: No rating is applied

Not applicable

PCE 5C
Enter the output reading with ... weather conditions.

Applicable rating: No rating is applied

Not applicable

PCE 6
Number of inverters, inverter(s) make and model.

Applicable rating: No rating is applied

Not applicable

PCE 7 ***UPDATED***
Does the installed inverter match Make and Model data provided by Solar Victoria?

Applicable rating: Needs rectification

Not applicable

PCE 8
System type – string/optimisers/microinverters

Applicable rating: No rating is applied

Not applicable

PCE 36
At the PCE has either an adjacent and physically separate load break disconnection device OR a load break disconnection device that is part of and within the PCE and conforming to AS/NZS 4777.2 been provided, where applicable?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.5.3.1

PCE
IP Rating.

Applicable rating: No rating is applied

Not applicable

PCE 11
Number of inverter/s installed.

Applicable rating: No rating is applied

Not applicable

PCE 12
Power rating (KW).

Applicable rating: No rating is applied

Not applicable

PCE 13
Type - transformer/transformerless.

Applicable rating: No rating is applied

Not applicable

PCE 14
Inom – circuit breaker in switchboard must be at least this rating.

Applicable rating: No rating is applied

Not applicable

PCE 17
VDX max.

Applicable rating: No rating is applied

Not applicable

PCE 18
IDC max.

Applicable rating: No rating is applied

Not applicable

PCE 19
Number of MPPTs.

Applicable rating: No rating is applied

Not applicable

PCE 21
For string inverter systems, if the inverter is located further than 3 metres from the switchboard, has an AC isolator been provided at the inverter that is suitably rated and securable in the open position?

Applicable rating: Needs rectification

AS/NZS 4777.1:2024 Clause 3.4.3.2

PCE 22
Is the inverter installed in an appropriate location and in accordance to manufacturer’s instructions such that it does not pose an imminent safety risk but may be at risk of becoming unsafe in the future? (e.g. IP rating, restricted locations)?

Applicable rating: Needs rectification

AS/NZS 3000:2018 Clause 1.7.2

AS/NZS 4777.1:2024 Clause 2.4

PCE 34
Is the inverter installed in an appropriate location and in accordance with manufacturers’ instructions and, whilst not posing a safety risk, was found to not comply with all standards (e.g. direct sunlight, clearance requirements)?

Applicable rating: Improvements identified (For information)

AS/NZS 3000:2018 Clause 1.7.2

AS/NZS 4777.1:2024 Clause 2.4

PCE 24
Does the AC cable supplying the inverter have suitable strain relief?

Applicable rating: Improvements identified (For information)

AS/NZS 3000:2018 Clause 3.3.2.8

AS/NZS 4777.1:2024 Clauses 4.3.3

PCE 25
Is there evidence of loose connections in the AC cables and connections with signs of heat?

Applicable rating: Unsafe

AS/NZS 3000:2018 Clause 3.7.2.3

PCE 35
Is there evidence of loose connections in the AC cables and connections with no signs of heat?

Applicable rating: Needs rectification

AS/NZS 3000:2018 Clause 3.7.2.3

PCE 26
Are the AC cables connecting to the inverter mechanically secured in such a manner that they cannot be inadvertently unplugged from the inverter?

Applicable rating: Needs rectification

AS/NZS 4777.1:2024 Clause 4.3.3

PCE 37
If installed have all PCE DC plugs, sockets and connectors been installed to the following requirements:

  • installed to minimise strain on the connectors
  • installed to maintain the IP rating
  • installed on PV DC cables conforming to the plug, socket and connector manufacturer's requirements
  • only mated with those from the same manufacturer and designed to be mated together
  • terminated using a tool (where required) designed for the purpose and technique specified by the plug, socket or connector manufacturer's instructions.

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.3.9.1

PCE 31
Is the inverter securely and safely installed in line with the manufacturers’ instructions?

Applicable rating: Needs rectification

AS/NZS 3000 Clause 1.7.1

PCE 38
Is the PCE PV input current rated to at least the PV array Isc (x1.25) of the circuit that is connected?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.5.1.1 and 4.2.2

PCE 42
For a group of inverters (e.g. "AC micro inverter" type systems) with a total capacity not more than 5kVA per phase has at least 1 AC isolation device been placed adjacent to the group of inverters to provide isolation to the group?

Applicable rating: Needs rectification

AS/NZS 4777.1:2024 Clause 3.5.2

PCE 40
For groups of inverters (e.g. "AC micro inverter" type systems) with groups of inverters more than 3 meters and line of sight from each other, has a separate isolator been installed for each group of inverters?

Applicable rating: Improvements identified

AS/NZS 4777.1:2024 Clause 3.5.2

PCE 41
Are AC cables supplying inverter that have been installed in an outdoor environment, been fixed with suitable fasteners? (e.g. not plastic type cable ties).

Applicable rating: Improvements identified

AS/NZS 4777.1:2024 Clause 3.3.2

Updated