TEL TAVRIDA ELECTRIC VCB15 LD, User Manual

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The following conditions must be fulfilled when designing mechanical interlocking:
• If the interlocking mechanism is attached to one of the interlocking pins, the weight of the directly attached
movable part to the interlocking pins shall not exceed 0.35 kg. If both interlocking pins are used, the sum of
the attached weights shall not exceed 0.35 kg (Figure 52).
• If the attached part is joined with a lever mechanism, the weight (including directly moved parts) shall be
decreased in proportion of the lever (Figure 53).
• If the interlocking mechanism is directly attached with the synchronizing shaft the moment of inertia of the
attached mechanism shall not exceed 4.3 x 10
-4
kg*m
2
. If both stub shafts of the synchronizing shaft are
used, the sum of the attached moments of inertia shall not exceed 4.3 x 10-4 kg*m
2
respectively
1.2 x 10
-4
kg*m
2
(Figure 51).
• For manual-emergency-tripping a force of up to 250 N may be applied to the interlocking pins. But no static
force shall be applied (Figure 52).
• It is not allowed to perform electrical trip/close commands while the interlocking pins or the synchronizing
shaft are blocked mechanically.
a) b)
Figure 52
Mechanical interlocking by interlocking pins
Figure 53
Direct connection of the interlocking mechanism to the synchronizing shaft