ABB REG316 4 Series Operating Instructions Manual page 300

ABB Switzerland Ltd
n1
Number of slips for zone 1, i.e. number of slips before 'Trip1'
is issued and signalled.
n2
Number of slips for zone 2, i.e. number of slips before 'Trip2'
is signalled.
t-Reset
The reset time 't-Reset' prevents the function from resetting
between two slips providing n1 or n2 is greater than 1.
CurrentInp
defines the A/D input channel.
VoltageInp
defines the A/D input channel.
BlockGen
Blocking input for detecting pole slip to the left, i.e. the gen-
erator is faster than the power system.
BlockMot
Blocking input for detecting pole slip to the right, i.e. the gen-
erator is slower than the power system.
(The power system drives the generator as if it were a motor.)
BlockInp
Blocking input for the entire pole slipping function.
EnableZone1
Zone 1 is enabled for slipping in zone 2 as well, i.e.
independently of ZC.
Warning
Detection of variations of rotor angle (before the first slip oc-
curs).
Generator
Signals rotor movement to the left, i.e. the generator is faster
than the system.
Motor
Signals rotor movement to the right, i.e. the generator is
slower than the system. (The power system drives the gen-
erator as if it were a motor.)
Zone1
First slip between ZB and ZC or between ZB and ZA, provid-
ing the input 'EnableZone1' is enabled.
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REG 316*4 1MRB520049-Uen / Rev. F