1 – 10000
The power switch of large CNC engraving milling machine is reliable.
During the inspection, the grounding wire shall be broken, the fasteners shall fall off, the zero line the ground wire shall be set separately, there shall be clear grounding marks. The grounding resistance measured by the resistance meter shall exceed 0.30.
A MEO instrument is used to measure the insulation resistance. DC500v can be added between the power line the protection point for 60 seconds without breaking flying arc.
Inspection rules: Inspection type inspection of this series of products
The products are inspected by the quality inspection door of engraving machine manufacturer before leaving the factory, the verification certificate is attached.
The inspection items are 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, etc.
Type testing should be carried out in one of the following situations.
New product identification time
Material change in process B
C. normal production year long-term shutdown to resume production
Type inspection items are all items of this standard
Sample type test
The prototype of type test shall be taken the qualified products inspected in the factory. Each sample shall be less than one.