POLE MOUNT
SINGLE PHASE
kVA Ratings: 10 kVA through 833 kVA
Voltage Ratings: 34,500 GrdY / 19,920 V — up to 170 kV BIL
Technical Specifications & Features
Ratings & Configurations
- Power Ratings
- Up to 833 kVA
- Voltage Ratings
- Up to 34,500 GrdY / 19,920 V
- Operating Frequency
- 60 Hz (50 Hz available upon request)
- BIL
- Selected per specified voltage rating and application (up to 170 kV BIL)
- Temperature Rise
- 65°C average winding rise
- Winding Material
- Copper (Cu) or Aluminum (Al)
- Core Construction
- High-grade Grain-Oriented Electrical Steel (GOES)
- Cooling Class
- Liquid-filled, self-cooled (ONAN / KNAN)
Standard Design Features
- Carbon-steel tank and cover assembly
- High- and low-voltage bushings
- Tank and low-voltage grounding provisions
- Mineral oil insulating fluid (ASTM D3487)
- Laser-etched / Anodized Aluminum nameplate
- Heavy-duty pole-mounting and lifting provisions
Available Optional Features
- 304 Series Stainless-steel tank and cover construction
- Externally operated de-energized tap changer (DETC)
- Dual-voltage or series-multiple primary windings
- Multiple secondary-voltage arrangements
- Customer-specified HV/LV bushings, pressure-relief valve, or internal fault detection (IFD)
- Natural ester fluid (available upon request)
- Wildlife-protection accessories & grounding connectors
- Special low-loss designs tailored to utility loss evaluation formulas
Factory Testing & Quality Assurance
Every transformer undergoes 100% routine testing prior to shipment in accordance with IEEE Std C57.12.90 and applicable standards. Certified Factory Test Reports (CTR) are provided with each unit.
Routine Electrical Tests
- Winding resistance measurement
- Voltage ratio & polarity check
- No-load loss and excitation current
- Load loss and impedance voltage verification
- Applied-potential and induced-potential dielectric tests
Production Quality Checks
- Fluid type verification, fill level, and dielectric breakdown testing
- Final helium/pressure tank leak test
- Final visual, dimensional, and mechanical inspection
- Verification of nameplate details, mounting brackets, and hardware
Applicable Standards & Fluid Specifications
Engineering Notice: Final ratings and features are confirmed for each order. Additional configurations, accessories, testing, documentation, and other project-specific requirements may be available upon request and are subject to engineering review.
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Single-Phase Pole-Mounted — RFQ Form
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