Product name
| AC low-voltage power distribution equipment
| Model specifications
| MCC | Device number
| HPU-E2003-VFD002 |
serial number
| Inspection items and inspection requirements
| Testing equipment
| Test results
|
1 | So so
examine
| Cabinet structure and appearance
Nameplate & Logo Check
Effectiveness check of mechanical operating elements, interlocks, latches and other components
1. Whether the secondary line layout is correct and whether the process is qualified
Whether the components are installed correctly
The equipment is energized to operate, check that the instrument indication is normal, and the switch action is reliable
| Visual
| qualified
|
2 | machine
operate
| The switching electrical appliances and all manually operated parts in the device are tested correctly according to the schematic diagram according to the voltage specified in the design, and the manual operation is 5 times each, and the mechanism action should be reliable and normal, and the interlocking mechanism meets the requirements and has no abnormal phenomena.
| Manual operation
| qualified
|
4 | Effectiveness test of protection circuit
| 1)The instrument door is ≤ 100m Ω to the main grounding point
2)The transformer ≤ 100m Ω to the main grounding point
3)The grounding bolt of the cabinet body is ≤ 100m Ω to the main grounding point
4)The mounting bracket ≤ 100m Ω to the main grounding point
5)The circuit breaker switch mounting plate ≤ 100m Ω to the main grounding point
| Ground resistance
Tester
| 1)4 mΩ 2)5 mΩ 3)4 mΩ 4)3 mΩ 5)3 mΩ |
5 | Dielectric property test
| 2.835 kV/1s between live parts and insulated operating handles
1.89 kV/1s between live and exposed conductive parts
1.89 kV/1s between each pole and the other poles connected to the exposed conductive parts
1.89 kV/1s between the auxiliary circuit and the frame that is not directly powered by the main circuit
| Hipot tester
| No breakdown
|
6 | Insulation resistance: The insulation resistance relative to the insulation voltage should be ≥ 1kΩ/V
| Megohmmeter
| 500 MΩ |
7 | Clearance: 10 mm between bare conductors of different polarities of the main circuit≥
The bare conductor of the main circuit is ≥ 10 mm between the housing and the housing
| Vernier calipers
| 1) 20 mm 2) 22 mm |
| Creepage distance: 12.5 mm ≥between bare conductors of different polarities in the main circuit
The bare conductor of the main circuit ≥ 12.5 mm between the housing and the housing
| | 1) 24 mm 2) 25 mm |
8 | Degree of protection verification: IP31
With a steel wire of Φ 2.5mm, apply a force of 3±0.3N to test the front, back, left, right and top of the device, and the steel wire should not be able to enter the cabinet (box); With a drip tank, the water flow rate is 1 mm/min, the test time is 10 minutes, and after the test, check that no water droplets enter the product The test is considered to meet the requirements of IP 31.
| Φ2.5mm steel wire and drip tank
| qualified
|
9 | Product Conformance Verification:
Key components, structures, and other aspects.
| Visual
| qualified
|
Conclusion: This product has been tested and tested in accordance with the relevant drawing design and the provisions of the IEC61439-2:2011 standard, and the product is qualified.
| Inspector: Secondary Inspection: Lu Ke
Craft appearance: Wan Zhilong Inspection time: 2025.4.11
|