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Electric Transformer Source Factories | Wholesale Power Transformer Platform

Discover verified electric transformer source factories on our vertical platform! We gather top-tier manufacturers offering ISO/IEC/ANSI certified power transformers, custom specifications, low energy loss, OEM/ODM support, and global shipping. Skip middlemen—source directly from reliable factories for power transmission & distribution projects worldwide.
Continuous / Step voltage regulation step voltage regulator 6kV 6.35kV 11kV 15kV 22kV 33kV – IEEE
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Continuous / Step voltage regulation step voltage regulator 6kV 6.35kV 11kV 15kV 22kV 33kV – IEEE
Negotiable
Automatic Tap - Changing Voltage Regulator Continuous / Step voltage regulation step voltage regulator 6kV 6.35kV 11kV 15kV 22kV 33kV – Customizable | OEM/ODM from Factory – IEEE C57.12 for Industrial Manufacturing Industry
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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20kV 44kV 145kV 150kV Three Phase Oil-Immersed Neutral Earthing Transformer Custom Factory
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20kV 44kV 145kV 150kV Three Phase Oil-Immersed Neutral Earthing Transformer Custom Factory
Negotiable
Rockwill 20kV 44kV 145kV 150kV Three Phase Oil-Immersed Neutral Earthing Transformer Custom Factory Three-phase zigzag winding design with low zero-sequence impedance
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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12kV 24kV 33kV Three Phases Transformer Pad Mounted HV/LV Plug-In Distribution Transformer
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12kV 24kV 33kV Three Phases Transformer Pad Mounted HV/LV Plug-In Distribution Transformer
Negotiable
12kV 24kV 33kV 3-phase pad-mounted HV/LV plug-in distribution transformer, ideal for outdoor power distribution systems.
Rockwell
13yrs 60000+m² US$+
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Long-Lasting 800V/800V Photovoltaic Transformer for Continuous Solar Energy Supply
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Long-Lasting 800V/800V Photovoltaic Transformer for Continuous Solar Energy Supply
Negotiable
Long - Lasting 800V/800V Photovoltaic Transformer ensures continuous solar energy supply. High - durability, efficient power conversion for stable PV systems.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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Low-Loss Three-Phase Photovoltaic Isolation Transformer
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Low-Loss Three-Phase Photovoltaic Isolation Transformer
Negotiable
Low-Loss 3-Phase PV Isolation Transformer: Reduces energy loss, ensures safe grid connection. High-efficiency design for stable power conversion & harmonic suppression.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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Photovoltaic grid-connected isolation transformer
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Photovoltaic grid-connected isolation transformer
Negotiable
Photovoltaic grid-connected isolation transformer: Ensures safe grid integration, isolates harmonics. High-efficiency, low-loss design for stable PV power conversion & reliable system protection.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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Photovoltaic Auxiliary Energy Storage Transformer
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Photovoltaic Auxiliary Energy Storage Transformer
Negotiable
Photovoltaic Auxiliary Energy Storage Transformer: Efficient 800V - 400V conversion for solar systems. Ensures stable energy storage, durable & reliable. Ideal for PV projects.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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10kVA Outdoor Three-Phase Photovoltaic Isolation Transformer
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10kVA Outdoor Three-Phase Photovoltaic Isolation Transformer
Negotiable
10kVA Outdoor Three-Phase Photovoltaic Isolation Transformer: Durable for outdoor solar setups, ensures safe power isolation & stable 800V/800V conversion.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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Photovoltaic power generation inverter isolation transformer
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Photovoltaic power generation inverter isolation transformer
Negotiable
Photovoltaic power generation inverter isolation transformer, for PV systems. Ensures electrical isolation, stabilizes power, suits diverse voltages. High - efficiency, reliable for safe grid - connection.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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1kVA-3000kVA Photovoltaic Isolation Transformer
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1kVA-3000kVA Photovoltaic Isolation Transformer
Negotiable
1kVA-3000kVA Photovoltaic Isolation Transformer, ideal for PV systems. Ensures electrical isolation, stable power, high efficiency. Suitable for solar energy applications.
ROCKWILL
18yrs 500-1000 employees 108000m²+m² US$+
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