MH/T 6018-2014 in English
VALIDAircraft ground solid-state power
- Issued on:2014-08-25
- Implemented on:2014-12-01
- File Format:PDF
- Delivery:Via email within 5 business days
$612.00
Introduction
Analysis of the key points of standard revision
| Revision items | 1999 edition | 2014 edition |
|---|---|---|
| Voltage standard | DC 28.5V | Unified to DC 28V |
| Operating temperature | -20℃~50℃ | Outdoor type -30℃~55℃, indoor type 0℃~40℃ |
| Efficiency requirement | 85% | Compound efficiency≥90% |
Key technical requirements
1. Electrical characteristics indicators
AC static power supply must meet the following requirements:
- Three-phase voltage unbalance ≤4.0V (3V for the 1999 version)
- Total harmonic distortion coefficient ≤5%
- Sudden load capacity reaches 150% of rated capacity
DC static power supply Newly added:
- Maximum current under engine starting condition2200A
- The distortion spectrum must comply with the limit values in Figure 9
2. Electromagnetic compatibility upgrade
The input side must meet the following requirements at the same time
- IEC 61000-6-2:2005 Industrial environment immunity
- GB 17799.4-2012 Emission requirements
Implementation suggestions
Precautions in the design phase
| Key points | Solution |
|---|---|
| NBPT function implementation | Using ±2Hz frequency synchronization technology, parallel switching time ≤100ms |
| Highland application | When the altitude is ＞1000m, perform derating design | according to Appendix A.
Test and verification points
- Compound efficiency test requires weighted calculation at 25%/50%/80%/100% load points
- Transient characteristics test requires the use of 1.25MHz sampling rate equipment (Appendix B)
- Protection level verification requires an IP54 rain test (Article 5.28)
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