A071114 V3 EN
Figure 137:
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 511 286-UUS A
Section 12
Monitoring
309
Application manual
Содержание REC650 ANSI
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