Toshiba GR200 Series Instruction Manual page 63

Table 2.1-2 Zone element, characteristics and directional
1 Z1S Protection for Zone 1 (Relay
/Z1G reach ≤ 80 % )
1X Z1XS Protection for Zone 1 extension
Z1XG (Relay reach ≤ 100 %)
2 Z2S Back up for Z1S, Z1X
/Z2G
3 Z3S Back up for Z1S, Z1X
/Z3G
/
4 Z4S Back up for Z1S, Z1X
/Z4G
5 Z5S Protection
/Z5G extension (Relay reach > 100 %)
Charging current compensation
When this distance protection function is applied to underground cables or long-distance
overhead lines, the effect of charging current is to be considered; it appears as a distance
measurement error to the fault. In order to suppress the effect and maintain the high-accuracy
distance-measurement capability, the charging current compensation function should be used.
Compensation is recommended if the minimum fault current is three times less than the
charging current.
The charging current compensation function has common scheme switches for both ZS
and ZG. The On setting is selected for the scheme switch [Z-IcC.EN] along with a setting value
for the setting [Z-IcC].
Yes
Yes
Yes
Yes
Yes
for over Zone 1 Yes
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Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
GRZ200 (Soft 031 & 032)
6F2S1915 (0.46)
Yes Yes Yes
Yes Yes Yes
Yes Yes No
Yes Yes No
Yes Yes No
Yes Yes Yes