Distribution Liquid Transformers
Hermetically sealed, low-loss distribution transformers for utility networks and industrial feeders. Available in ratings from 25 kVA to 5 MVA with guaranteed efficiency levels exceeding Tier 2 requirements.
Engineering Features
Hermetically Sealed
No conservator, no breather — completely sealed for maintenance-free operation.
Technical Data
| Parameter | Range / Value |
|---|---|
| Rated Power | 25 kVA – 5,000 kVA |
| Primary Voltage | 6.6 – 36 kV |
| Secondary Voltage | 230 / 400 V – 690 V |
| Frequency | 50 / 60 Hz |
| Impedance | 4% – 6% |
| Vector Group | Dyn11, Yyn0, Dzn0 |
| Temperature Rise | Top oil ≤ 60K, Winding ≤ 65K |
| Altitude | Up to 1000m (higher on request) |
| Ambient Temp | -25°C to +50°C |
| Efficiency | ≥ 99.2% at rated load |
Standard range parameters — custom specifications available on request.
Related glossary terms
DEWA Approved
Dubai Electricity & Water Authority vendor
ADDC / AADC
Abu Dhabi Distribution Company approved
SEWA / FEWA
Sharjah & Federal Electricity authorities
ADNOC AVL
ADNOC Approved Vendor List
IEC 60076
International standard for power transformers
ARAMCO 17-SAMSS
Saudi ARAMCO material specification
Distribution transformers approved by DEWA, ADDC, SEWA, FEWA, OEWA, KAHRAMAA and SEC — manufactured at our 50,000 m² facility in Jebel Ali Free Zone since 1987. Available from 50 kVA to 5 MVA at 11 kV, 22 kV and 33 kV, every unit is IEC 60076 type-tested, KEMA short-circuit certified and qualified for the GCC's high-ambient (50 °C+) service conditions. With 30,000+ transformers in service across the UAE, Saudi Arabia, Oman, Qatar, Kuwait and Bahrain, ETS is the Middle East's most trusted distribution-transformer manufacturer.
DEWA 11kV/33kV Secondary Substations · Dubai Emirate
ADDC Distribution Network · Abu Dhabi & Al Ain
SEWA Distribution Feeders · Sharjah & Northern Emirates
Saudi Electricity Co. (SEC) · Riyadh, Jeddah, Dammam
Oman Electricity Holding · Muscat & Sohar
FEWA · UAE Northern-Emirates Distribution
Where Distribution Liquid Transformers Excel.
DEWA, ADDC, SEWA & FEWA Networks
DEWA, ADDC, SEWA and FEWA approved distribution transformers for utility primary and secondary distribution across the UAE.
ADNOC & ARAMCO Industrial Sites
Hermetically-sealed distribution transformers for ADNOC and ARAMCO downstream complexes, gas plants and onshore production sites.
Jebel Ali & GCC Free Zones
Tropical-rated distribution transformers for JAFZA, KIZAD and other GCC free-zone industrial and logistics developments.
GCC Mega-Developments
Distribution transformers for NEOM, The Red Sea Project, Lusail and other Gulf giga-projects requiring rapid urban electrification.
Frequently Asked Questions
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Related Knowledge
FAQs, glossary terms and sizing steps mapped to this product.
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