What is a substation transformer used for?

Substation transformers are used to step down high-voltage electricity to usable levels for industrial, utility, and mining applications. ETAC supplies custom substation transformers across North America.

Can ETAC build custom substation transformers?

Yes. ETAC designs and manufactures custom substation transformers tailored to specific project needs including voltage, capacity, and protection systems.

Do your transformers meet Canadian utility standards?

Absolutely. ETAC’s substation transformers are CSA or cULus certified and meet the standards required by Canadian utilities and industrial operators.

Solid-State Transformer (SST)

Solid-State Transformer (SST) is a next-generation power infrastructure solution designed for AI data centers, EV fast charging, renewable energy, and advanced DC-native systems.

By directly converting medium-voltage AC to low-voltage DC through a modular and integrated architecture, SST delivers high-efficiency power conversion (>97%), reduces footprint by up to 60%, and enables faster, scalable deployment compared to traditional transformer systems.

What is a Solid-State Transformer?

A Solid-State Transformer (SST) is an advanced power conversion system that replaces conventional transformers with high-frequency power electronics.

Key Capabilities

Direct AC to DC conversion
High-frequency isolation
Intelligent and programmable control
Native DC output for modern infrastructure

Applications of Solid-State Transformer

AI Data Centers: Designed for high-performance computing and GPU-intensive workloads
EV Fast Charging Infrastructure: Supports megawatt-level charging systems with direct DC distribution
Renewable Energy Integration: Enables seamless integration of solar, storage, and hybrid DC systems
AC/DC Hybrid Power Systems: Supports next-generation flexible grid architectures

SST vs Traditional Transformer

Feature	Traditional Transformer	SST Transformer
Conversion Stages	Multiple	Single-stage
Efficiency	<90%	>97%
Footprint	Large	Up to 60% Smaller
Deployment Speed	Slow	Faster
Maintenance	Complex	Simplified
DC Capability	Indirect	Native DC Output
AI Data Center Ready	Limited	Build for AI Workloads

Solid-State Transformer (SST) Specifications

Voltage Range

Input (Medium Voltage AC):
6kV – 35kV
Typical: 10kV / 13.8kV / 34.5kV
Output (DC):
400V DC
800V DC (AI data center standard)
Up to 1500V DC (renewable integration)

Power Capacity

Modular unit capacity: 1.5MW – 3MW
Scalable system capacity: up to multi-MW (10MW+)
Parallel and cascaded architecture supported

Performance

Efficiency: >97.5%
Harmonics: THDi < 2%
Power factor: ≥ 0.99
Redundancy: ~25% system redundancy

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