| 14 | Low voltage active power filter(APF) | 1 | Structure and appearance | Technical specification of low-voltage active power filter DL/T 1796-2017 6.1 |
| 2 | Safety mark | Technical specification of low-voltage active power filter DL/T 1796-2017 6.12.1 |
| Safety signs and guideline for the use GB 2894-2008 |
| 3 | Protection and grounding | Technical specification of low-voltage active power filter DL/T 1796-2017 6.12.2 |
| Low-voltage reactive power compensation assemblies GB/T 15576-2008 7.6 |
| 4 | Insulation resistance test | Low-voltage active power filter JB/T 11067-2011 5.2 |
| Technical specification of low-voltage active power filter DL/T 1796-2017 6.5.1 |
| 5 | Dielectric strength | Low-voltage active power filter JB/T 11067-2011 5.2 |
| 6 | Power frequency withstand voltage test | Technical specification of low-voltage active power filter DL/T 1796-2017 6.5.2 |
| 7 | Impulse voltage | Low-voltage active power filter JB/T 11067-2011 5.2 |
| 8 | Technical specification of low-voltage active power filter DL/T 1796-2017 6.5.3 |
| 9 | Inspection of Electrical Clearance and Creep Distance | Technical specification of low-voltage active power filter DL/T 1796-2017 6.5.4 |
| 10 | Light load test | Low-voltage active power filter JB/T 11067-2011 5.3 |
| 11 | Load test | Low-voltage active power filter JB/T 11067-2011 5.4 |
| 12 | Technical specification of low-voltage active power filter DL/T 1796-2017 6.7.4 |
| 13 | Protection test | Low-voltage active power filter JB/T 11067-2011 5.6 |
| 14 | Caution function | Technical specification of low-voltage active power filter DL/T 1796-2017 6.2.1 |
| 15 | Over current protection | Technical specification of low-voltage active power filter DL/T 1796-2017 6.2.2.1 |
| 16 | DC overvoltage / undervoltage protection | Technical specification of low-voltage active power filter DL/T 1796-2017 6.2.2.2 |
| 17 | AC overvoltage / undervoltage protection | Technical specification of low-voltage active power filter DL/T 1796-2017 6.2.2.3 |
