Hysteresis - DEMA 400 Series User Manual

exceeded until the end of this period, the protection function trip time counter will be reseted.
Reset delay thresholds are in the range of (0-60).
4.3.3.3.5

Hysteresis

It allows the selection of the minimum and maximum values for the protection to be activated
by entering the value in percentages and the same value being switched off in percentage. For
example, if the overvoltage protection start value is set to 100 V, the hysteresis value is set to
5%, the protection is activated when the protection exceeds 105 V; If it falls below 95 V, the
protection is deactivated. This hysteresis value can be selected from 1% to 20%.
59N – Notr Over Voltage Protection
4.3.3.4
The overvoltage protection settings are Menu> Protection Settings> Voltage Protection
Settings> Neutral Overvoltage Protection
Neutral overvoltage protection is used to protect motors from surge voltage in the neutral line
in the network. It works according to definite time characteristic.
Notr Over Voltage Protection is indicated by Ue> in IEC 60617 Standards; EI_PIOV_1 in
IEC 61850; 59N-I-1 in IEEE/ANSI Standards
Notr Over Voltage Protection
IEC 61850 IEC 60617 IEEE-ANSI
EŞİK-1 EI_PIOV_1
Ue> 59N-I-1
Notr Over Voltage Protection Function Symbols
The menu view is as follows. The menu consists of five lines.
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