GB/T 7064-2017 in English
VALIDSpecific requirements for cylindrical rotor synchronous machines
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
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《GB/T 7064-2017隐极同步发电机技术要求》由TC511（全国大型发电机标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Core parameters and technical specifications
| Key indicators | Air-cooled motor | Hydrogen-cooled motor |
|---|---|---|
| Cooling medium temperature | ≤40℃ | Hydrogen purity≥95% |
| Insulation resistance | ≥100MΩ(40℃) | ≥2kΩ(water-cooled rotor) |
| Overspeed test | 1.2 times rated speed/2min | |
Main highlights of standard revisions
New content: 7 key updates including technical requirements for synchronous phase condensers (4.2.2), harmonic current processing (4.15.2), and fast reclosing protection (4.21.4)
Performance improvement: The stator overcurrent withstand time is extended from 60s to 120s, and the 60-year life design specification for nuclear power 4-pole generators is added (8.2)
Safety protection system
Hydrogen-cooled motors must be configured with:
- Dual hydrogen purity monitoring (≥95%)
- CO₂ replacement system (Appendix G.6.3)
- Explosion-proof ventilation device (GB 3836 standard)
Hydrogen leakage control: ≤18m³/24h (standard working conditions)
Comparison of typical application scenarios
| Model | Gas turbine drive | Nuclear power 4-pole |
|---|---|---|
| Annual start and stop times | ≤500 times | Base load operation |
| Design life | 25 years | 60 years |
| Cooling method | Open air cooling | Water hydrogen hydrogen |
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