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