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PV module terminal box knockout testing machine/Testing equipment/testing apparatus
standard
According to IEC 61730:2-2004 and EN 168
purpose
Removable hole covers in the walls of module terminal enclosures (knockouts) shall remain in place under nominal force application and aslo be easily removed for the field application of permanent wiring system components
specification
1. 38mm length,diameter 6.4mm flat-heat circular shaft
2.Connection box clamp
3.Weights automatic lift and fall device
Specimen conditional :
With a knock-off orifice’s polymer connection box sample will in the temperature 25ºC being test .
With another knock-off orifice’s polymer connection box sample will in the -20±1ºC Placed 5h
After placed , the connection box should repeat above testing immediately
Test procedure as following :
First , use the shortest Length 38mm,Diameter 6.4mm flat-head circular shaft against
knock-off cover apply 44.5N force,continue apply force 1min
Apply force direction with orifice cove plane vertical , its add maybe cause knock-off orifice cover
move place , after 1 h , measurement orifice cover with connection box wall dislocation
Second , use a screw knife as chisel , Open the knock-off cover , knockoff after allow the screw
knife blade edge along already opened inner wall scratch a circle. In order to clear the edge’s debris
Third , For another two knock-off cover repeat the first step and second step
If connection box’s knock-off cover can have more diameter trepan , when small diameter knock
off cover is opened , big diameter knock-off cove should not move , qualified determination
testing machine image
1.High quality and best after-sell service
2.100% quality inspection before delivery
3.Managment Innovate
4.Strong R & D team
5.Can handle customers's feedback problems and doubt timely
6.Our testing machine have one year Warranty time
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