500kV, 168kV, 71.5kV, 167MVA Power Transformer
Standard
IEC 60076, IEC 60214, IEC 60071, IEC 60529, IEEE C57, ANSI, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO/IEC 17025
Warranty
24 months after commissioning
Lead Time
14 months
TESTING
Routine Tests
- Visual and dimensional inspection
- Winding resistance measurement
- Transformer Turns Ratio (TTR) verification
- Vector group and polarity verification
- No-load loss and excitation current measurement
- Load loss and short-circuit impedance test
- Applied AC withstand voltage test
- Induced AC overvoltage withstand test
- Insulation resistance measurement
- Oil dielectric strength and moisture analysis
- OLTC operational and functional testing
- Leak test and pressure integrity verification
- Bushing electrical testing
- Current Transformer (CT) verification
- Final mechanical inspection and documentation review
Type and Special Tests (as specified)
- Lightning Impulse Withstand Test (LI)
- Switching Impulse Test (SI)
- Temperature Rise Test
- Partial Discharge Measurement
- Sound Level Measurement
- Short-Circuit Withstand Verification
- Zero-Sequence Impedance Test
- Dissolved Gas Analysis (DGA)
- Customer Witness Factory Acceptance Test (FAT)
Product Features
- Three-winding Extra High Voltage (EHV) transformer designed for 500 kV transmission networks.
- Rated 167 MVA continuous duty with excellent overload capability.
- High-efficiency grain-oriented silicon steel core minimizing no-load losses and noise.
- Robust copper windings with superior mechanical strength for short-circuit withstand.
- Advanced oil-directed cooling system for reliable thermal performance.
- Precision On-Load Tap Changer (OLTC) for accurate voltage regulation.
- Low partial discharge insulation system for enhanced long-term reliability.
- High dielectric strength insulation designed for demanding EHV applications.
- Heavy-duty welded steel tank with corrosion-resistant coating suitable for tropical and coastal environments.
- Conservator system with diaphragm or air-cell to maintain oil quality.
- Stainless steel piping and radiators for long service life.
- Integrated online monitoring options including:
- Dissolved Gas Analysis (DGA)
- Fiber-optic winding temperature monitoring
- Top oil temperature indicator
- Moisture-in-oil monitoring
- Bushing condition monitoring
- Online OLTC monitoring
- Engineered for a design service life exceeding 40 years under normal operating conditions.
- Fully customizable to meet utility, transmission, and large-scale infrastructure project specifications.