TEL TAVRIDA ELECTRIC VCB15 LD, Руководство пользователя

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To avoid unacceptable high electrodynamic impact on the ISM, additional support insulators are required if the
unsupported busbars are longer than specified in the Table 4.
ISM
Short-circuit current
20 kA 25 kA 31.5 kA
L1, mm
ISM15_Shell_2(150_L) 700 450 300
ISM15_Shell_2(210_L)
ISM15_Shell_2(210_H)
980 630 420
ISM15_Shell_2(275_H) 1200 820 550
Maximum clearances due to electrodynamic forces
Table 4 - Additional support insulators installation minimum distances
Figure 46
ISM support insulators installation distance
Minimum clearances due to electromagnetic influence
To avoid primary current effect on ISM actuator, the minimum clearance between bus bars and the ISM frame
(Figure 47) should be no less than stated in the Table 5.