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显然不行：8 B% k+ L. e4 r$ K3 P
, M8 n( G! `( V: m1 p4 j+ b7.2.4 Earthing terminals shall comply with the requirements of 4.7.3. The connection shall be
+ r; }9 B( g( S }adequately locked against accidental loosening.
( k# ]$ b" e6 W4 s$ BFor screw terminals, it shall not be possible to loosen the clamping means by hand.
2 |0 j m. G5 B) g' K0 nFor screwless terminals, it shall not be possible to loosen the clamping means unintentionally.: e3 N+ t6 [* f5 l7 `$ t
Compliance is checked by inspection, by manual test and by the tests specified in 4.7.3.
$ Z) T' Q* s& L5 S. ~NOTE In general, the designs commonly used for current-carrying terminals provide sufficient resilience to comply2 C$ U7 j: y3 d6 I: K8 U. p6 {
with this requirement; for other designs, special provisions, such as the use of an adequately resilient part which is+ J% S/ Z, ~; d5 y1 F7 W, v
not likely to be removed inadvertently, may be necessary.) J. x- K) P9 k/ ]9 c
For terminal blocks with integrated screwless earthing contacts, the additional tests of Annex V3 p! a9 V0 V+ u4 o& a
apply. |
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