Technical Specifications Summary

Critical Performance Features

Precision Voltage Generation

• <3% waveform distortion ensures accurate:

• Dielectric loss measurements

• Partial discharge calibration (IEC 60270)

• Harmonic analysis during extended tests

• Measurement winding (1000:1 ratio) enables:

• Direct connection to reference dividers

• Traceable calibration chains

Ultra-Quiet Operation

• <60dB noise level at full load (equivalent to office conversation):

• Enables installation in noise-sensitive environments

• Reduces lab acoustic shielding requirements

• Beats typical competitors by 15-20dB

Robust Overload Protection

\small\text{Overload Capability} = \begin{cases} 
\text{Voltage: 330kV (110\%) × 60s} \\
\text{Current: 1.2A (120\%) × 60s}
\end{cases}

• Survives transient surges during:

• Cable fault simulations

• GIS disconnect switch testing

• Transformer impulse validation

Thermal Stability

• Continuous operation at 300kV/1A for 1 hour:

• Winding ΔT ≤65K (IEC 60076 Class A)

• Oil surface ΔT ≤55K

• ONAN cooling eliminates:

• Pump maintenance costs

• Forced-air noise pollution

Compliance & Safety

• Insulation withstand (5kV/1min):

• Measurement winding ↔ Earth

• HV terminal ↔ Earth

• LV winding ↔ Earth

• Exceeds IEC 60076-14 for test transformers

• Meets IEEE C57.12.90 temperature rise limits

Industrial Applications

1. Cable Manufacturer QC Labs

• 300kV withstand testing on 220kV class cables

• PD measurement during type tests

2. Utility Commissioning Teams

• On-site GIS partial discharge mapping

• Transformer turns ratio validation

3. High-Power Research Facilities

• Material dielectric strength testing

• HVDC component development

Operational Comparison

Why choose 300kVA over standard models?

1. Maintain 4m clearance radius during 330kV tests

2. Use 1000:1 measurement winding for calibration

3. Annual oil DGA (Dissolved Gas Analysis) recommended

Technical Validation

"The <3% THD specification allows direct harmonic loss measurements without external filters - a game-changer for efficiency testing on superconducting cables. Combined with its 60dB noise profile, this transformer enables lab-grade accuracy in urban substations."
— Dr. Kenji Tanaka, Power Systems Researcher, IEEE Fellow

Conclusion: Next-Generation HV Testing

The LQTT 300kV/300kVA sets new benchmarks for:

• Measurement precision (<3% distortion + 1000:1 output)

• Environmental compatibility (<60dB noise)

• Thermal resilience (1-hour continuous operation)

Ideal for:
▸ High-volume cable factories
▸ Utility diagnostic centers
▸ Government test labs requiring ISO 17025 compliance