2 IMPULSE FOR FLAG INDICATOR
The trip energy (12-24 V DC, < ± 0.03 J) for the flag indicator is stored by a capacitor built into the
protection relay. The capacitors are charged by a current input or the auxiliary voltage. The duration of
the trip pulse is 50 ms (if output is not burden). The pause between the individual pulses depends on
the impedance of the flag indicator and on the current level. The pulse lasts as long as the activation
threshold is exceeded. The impulse output for flag indicator and trip coil drive energy from same
source. The flag indicator output uses additional capacitor to store additional required energy. If more
energy is taken from flag output than specified, then it will affect energy output of trip coil.
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