Products

Solar & Wind Distribution Equipment

From the string combiner box to the connection bay — plus the kiosk substation and distribution transformer range behind it. All supplied to Australian conditions and standards.

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Product range at a glance

Comparison of Omnetric solar, wind, transformer and substation products by category and typical application
Product	Category	Best suited to
Inverter Duty Transformers	Solar & Wind Plant	Utility-scale solar farms and BESS where inverter blocks feed a medium-voltage collection network.
Grid Connection Transformers	Solar & Wind Plant	Solar and wind farms connecting at transmission level, where impedance, tap range and fault strength are set by the connection agreement.
Central Inverters	Power Conversion	Utility-scale solar farms built around repeatable inverter blocks.
String Inverters	Power Conversion	Commercial and industrial rooftops and small ground-mount plants where a central inverter is oversized.
HV & LV Switchgear	Switchgear & Protection	Plant substations, switchyards and the handover bay where power is transferred to the network operator.
Cabling & String Combiner Boxes	Cabling & Connection	Projects at the cable scheduling stage, where consolidated supply avoids offcuts and mismatched drum lengths.
Earthing & Lightning Protection	Earthing & Protection	Solar and wind sites where the earthing grid is laid in alongside cable trenching.
SCADA, OFC & Metering	Control & Monitoring	Plants that must report faults to a control room and curtail output on network instruction.
Kiosk Substations	Packaged Solutions	Brownfield sites, commercial subdivisions and remote operations where on-site civil works must be minimised.
Fin Wall Transformers	Distribution Transformers	Utility and industrial distribution networks where lifetime maintenance cost is the deciding factor.
Dry Type Transformers	Distribution Transformers	Indoor substations, high-rise buildings, data centres and sensitive commercial environments.
FM Fire Mitigation Transformers	Fire-Rated Solutions	Dense urban developments and constrained sites where every square metre carries cost.
Standard Substation Transformers	Distribution Transformers	Heavy industrial plants and mining operations needing proven, robust, compliant units.

Solar & Wind Plant

Inverter Duty Transformers

Step-up transformers that lift inverter output to collection voltage — typically 33 kV — specified for the harmonics and daily cycling of inverter-fed generation.

Sized around inverter blocks, commonly in the 3–4 MVA class
Specified for harmonic content and the thermal cycling inverter output imposes
Station service and isolation units supplied alongside for auxiliary and standby supply

Best for: Utility-scale solar farms and BESS where inverter blocks feed a medium-voltage collection network.

Key specifications

Typical secondary: 33 kV collection, or to project spec
Duty: Inverter-fed, cyclic loading
Standards: AS 60076 and IEC equivalents

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Solar & Wind Plant

Grid Connection Transformers

Power transformers that take plant collection voltage up to transmission level for connection to the NEM.

Sourced across the 132 kV, 220/275 kV and 330 kV connection range
ONAF and OFAF cooling options for sites where ambient exceeds 40–45 °C
On-load tap changers for voltage regulation under variable renewable output

Best for: Solar and wind farms connecting at transmission level, where impedance, tap range and fault strength are set by the connection agreement.

Key specifications

Connection voltage: 132 kV to 330 kV, per NSP requirement
Cooling: ONAN, ONAF or OFAF to suit site ambient
Regulation: On-load tap changer

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Power Conversion

Central Inverters

Block-scale DC to AC conversion for utility projects, typically supplied in the 3–4 MVA range per unit.

Matched to the inverter duty transformer and collection design
Block architecture that keeps DC cable runs — and DC losses — short
Supplied with the monitoring interfaces the plant SCADA expects

Best for: Utility-scale solar farms built around repeatable inverter blocks.

Key specifications

Typical unit size: 3–4 MVA
Function: DC to AC conversion at block level
Integration: Paired with inverter duty transformers

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Power Conversion

String Inverters

Distributed DC to AC conversion for smaller plants and rooftop systems, from a few hundred kilowatts to a couple of megawatts.

Suited to plants around 500 kW to 2 MW, and to commercial rooftop systems
Distributed architecture that limits the impact of any single unit fault
Simpler civil and installation scope than a central inverter block

Best for: Commercial and industrial rooftops and small ground-mount plants where a central inverter is oversized.

Key specifications

Typical plant size: 500 kW to 2 MW
Function: DC to AC conversion at string level
Application: Small utility, commercial and rooftop

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Switchgear & Protection

HV & LV Switchgear

High and low tension switchgear for plant collection systems, substations and the connection bay.

HT switchgear for collection and substation duty
LT switchgear and distribution boards for auxiliary and site supply
Isolators, protection and instrument equipment for the connection bay

Best for: Plant substations, switchyards and the handover bay where power is transferred to the network operator.

Key specifications

Range: HT and LT
Application: Collection, substation and bay
Testing: To network operator safety requirements

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Cabling & Connection

Cabling & String Combiner Boxes

DC, AC, HT and control cable supplied to the plant cable schedule, with string combiner boxes for the DC side.

DC string, AC collection, HT and control cable to one schedule
Sizing set by run length, so losses stay inside the design allowance
String combiner boxes consolidating array output ahead of the inverter

Best for: Projects at the cable scheduling stage, where consolidated supply avoids offcuts and mismatched drum lengths.

Key specifications

Cable types: DC, AC, HT and control
Sizing basis: Run length and loss allowance
Supply basis: Against the project cable schedule

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Earthing & Protection

Earthing & Lightning Protection

Earthing and surge protection materials for array, substation and switchyard earthing grids.

Earth strip, earthing rods and grid materials
Lightning arresters for array, substation and bay protection
Supplied to suit the earthing design and soil resistivity results

Best for: Solar and wind sites where the earthing grid is laid in alongside cable trenching.

Key specifications

Materials: Earth strip, rods and grid hardware
Surge protection: Lightning arresters
Stage: Installed with trenching and cabling

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Control & Monitoring

SCADA, OFC & Metering

Remote monitoring and control equipment, fibre communications and revenue metering for the main control room and the bay.

SCADA for remote monitoring and generation curtailment when the network requires it
Optical fibre cable linking inverters, substation and the main control room
Control room equipment with battery backup, plus generation and consumption metering

Best for: Plants that must report faults to a control room and curtail output on network instruction.

Key specifications

Communications: Optical fibre cable (OFC)
Control: Remote monitoring and output curtailment
Metering: Generation and consumption

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Packaged Solutions

Kiosk Substations

Fully integrated, transportable HV/LV turnkey substations delivered as a single factory-tested package.

Complete HV switchgear, transformer and LV distribution in one enclosure
Factory assembled and tested to cut on-site commissioning time
Transportable design suited to staged and remote deployments

Best for: Brownfield sites, commercial subdivisions and remote operations where on-site civil works must be minimised.

Key specifications

Configuration: Turnkey HV/LV package
Delivery: Transportable, single-lift
Testing: Full factory acceptance testing

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Distribution Transformers

Fin Wall Transformers

Hermetically sealed transformers with integrated folded fin walls, removing the need for a nitrogen blanket.

Hermetically sealed tank with integrated folded fins for passive cooling
Zero nitrogen blanket required, eliminating cable box maintenance
Scalable across the distribution range up to 36 kV

Best for: Utility and industrial distribution networks where lifetime maintenance cost is the deciding factor.

Key specifications

Voltage: Up to 36 kV
Sealing: Hermetically sealed
Maintenance: No nitrogen blanket, no cable box servicing

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Distribution Transformers

Dry Type Transformers

Moisture-proof, self-extinguishing and maintenance-free transformers built for occupied buildings.

No insulating oil, removing spill containment and fire load concerns
Self-extinguishing construction for maximum indoor fire safety
Maintenance-free operation across the service life

Best for: Indoor substations, high-rise buildings, data centres and sensitive commercial environments.

Key specifications

Cooling: Air cooled, oil free
Fire behaviour: Self-extinguishing
Ingress: Moisture-proof construction

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Fire-Rated Solutions

FM Fire Mitigation Transformers

Superior fire protection design that reduces project footprint and removes structural blast walls.

Fire mitigation design allowing reduced separation distances
Eliminates the need for expensive structural blast walls
Recovers usable site area on constrained developments

Best for: Dense urban developments and constrained sites where every square metre carries cost.

Key specifications

Design intent: Fire mitigation rated
Site impact: Reduced footprint and separation
Civil works: No blast wall required

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Distribution Transformers

Standard Substation Transformers

Heavy-duty, cost-competitive units built to AS 60076 for demanding industrial duty.

Built to AS 60076 standards
Heavy-duty construction for continuous industrial loading
Cost-competitive for volume and repeat deployments

Best for: Heavy industrial plants and mining operations needing proven, robust, compliant units.

Key specifications

Standard: AS 60076
Duty: Heavy industrial and mining
Construction: Ruggedised for harsh environments

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Where these products are applied

Utility-Scale Solar & Wind→Data Centre Power Infrastructure→EV Charging Networks→Turnkey Industrial & Mining Grids→