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short-circuit current is generally set to be lower, which can be selected according to the
specific circumstances.
5. [Test item]
This test project contains 0.7 times, 0.95
times, 1.05 times, 1.1 times of four kinds of
multiples of 1-4 section impedance given value,
and generally takes the value of 0.7 times, 0.95
times, 1.05 times to test. Also can be segment
tested (do not choose the segment which you
do not want to test). Protection rules order: the 0.95 times must be reliable action , 1.05 times
must be the impedance action of next segment, segment 1 is instantaneous impedance
action , Section 2, and 3are with delay action , the operating time is determined by protection
setting value. Usually, the greater the resistance, the longer the operation time, therefore, the
operation time is increased stepwise with the impedance rise, it is also known that stepped
impedance test.
6. [switching value]
Protect switching export contacts; access the input terminal contact channel 1 of the
tester.
7. Protection on/off
Only distance protection platen is on, main protection and zero sequence protection
platen is off.
8. Wiring-as shown
Summary of Contents for HT-802
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