A071114 V3 EN
Figure 213: Trip Curves for a typical 12 kV, 630 A, 16 kA vacuum interrupter
Nr
the number of closing-opening operations allowed for the circuit breaker
Ia the current at the time of tripping of the circuit breaker
Calculation of Directional Coefficient
The directional coefficient is calculated according to the formula:
1MRK 506 334-UUS A Section 14
Monitoring
453
Application manual
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