Date Code 990430 Overcurrent, Voltage, Synchronism Check, and Frequency Elements 3-23
SEL-351P Manual Técnico
Figure SECTION 3: .17: Neutral Ground Time-Overcurrent Element 51N2T (with
Directional Control Option)
To understand the operation of
Figure SECTION 3: .16 and Figure SECTION 3: .17, follow the
explanation given for
Figure SECTION 3: .14 in the preceding Phase Time-Overcurrent
Elements subsection, substituting current I
N
(channel IN current) for maximum phase current I
P
and substituting like settings and Relay Word bits.
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