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显然不行：: }# _+ s* n% L, _& U0 M5 X! P! L
/ W" e" {0 S/ l5 O+ `$ N- E7.2.4 Earthing terminals shall comply with the requirements of 4.7.3. The connection shall be# ^- T+ w% ?# O8 {! H" i% p
adequately locked against accidental loosening.7 W+ O( C& b# P. [% }
For screw terminals, it shall not be possible to loosen the clamping means by hand.
5 H6 i$ K+ @: @9 k7 X6 T9 tFor screwless terminals, it shall not be possible to loosen the clamping means unintentionally.
$ m0 {/ Q$ { v0 s. H: t# ZCompliance is checked by inspection, by manual test and by the tests specified in 4.7.3.
3 i% W( |) G( P# `NOTE In general, the designs commonly used for current-carrying terminals provide sufficient resilience to comply
6 J, |( p4 A# k( G( Ywith this requirement; for other designs, special provisions, such as the use of an adequately resilient part which is
% [9 Y3 C: C4 B/ Q7 x* Inot likely to be removed inadvertently, may be necessary.
0 Y" I8 `/ Q( i, G* z( rFor terminal blocks with integrated screwless earthing contacts, the additional tests of Annex V
- x5 ^: R" \" yapply. |
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