|
显然不行:
: o5 q, N' I$ V2 J N1 j' C' o& s! o. x& W
7.2.4 Earthing terminals shall comply with the requirements of 4.7.3. The connection shall be
) X& {9 G4 s( nadequately locked against accidental loosening.
# ^1 ]( L5 G0 n+ y% l2 H7 XFor screw terminals, it shall not be possible to loosen the clamping means by hand.5 s- `4 s8 V! z$ E
For screwless terminals, it shall not be possible to loosen the clamping means unintentionally.( P- @" X& R% H$ l$ r5 M3 d9 v2 b
Compliance is checked by inspection, by manual test and by the tests specified in 4.7.3.
% F0 z ?/ E+ s8 q! G0 \% y, K6 ]: {NOTE In general, the designs commonly used for current-carrying terminals provide sufficient resilience to comply7 j0 I; g5 [/ s: V$ m
with this requirement; for other designs, special provisions, such as the use of an adequately resilient part which is
' A7 z0 j8 d) Ynot likely to be removed inadvertently, may be necessary.
/ E5 e+ [ i) ?9 NFor terminal blocks with integrated screwless earthing contacts, the additional tests of Annex V
6 ~; w- C- p, e: j' d7 eapply. |
|