Siemens SIPROTEC 7SJ62 Manual page 516

Multi-functional protective relay with local control

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Technical Data

4.16 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s)

Logarithmic Inverse Trip Time characteristic with knee point

Trip-time characteristics of the inverse-time ground fault protection 51Ns with logarithmic

inverse characteristic with knee point (example for 51Ns = 0.004 A)

SIPROTEC, 7SJ62/64, Manual

C53000-G1140-C207-2, Release date 01.2008