Toshiba GR200 Series Instruction Manual page 222

Reset time of DT
(vi)
In the DT characteristic, the reset time is designed to be instant.
Summary of OCN operation
(vii)
Table 2.7-4 shows a summary for OCN operation. Note that DEF will be set unconditionally in
IEC-NI, VI, EI and UK-LTI characteristics (†).
Table 2.7-4 Type and standard board in the OCN1 (A tick represents a selectable function)
Characteristics DT
DT
IEC-NI
IEC-VI
IEC-EI
UK LTI
IEEE-MI
IEEE-VI
IEEE-EI
US-CO2
US-CO8
Original
N.A
DEF
N.A
N.A
N.A
DEP
N.A
N.A
N.A
Threshold value
2.7.3
The value of threshold current at which the OCN (I 2 ) element will pick-up is configured by
settings; the setting [OCN1] is provided for both the IDMT and the DT characteristic. Note
that the settings of the threshold levels are allowed to have distinct values in the respective
OCN elements. A rating current for the input is defined either 1A or 5A; the input rating is
defined on a VCT. (For more information about the VCT, see Chapter
Transformer module for AC analogue input
Reset Ratio
2.7.4
The ratio of the threshold current for pick-up to reset is applied using a setting; for example,
the ratio for the OCN1 element is set using the setting [OCN1-DPR]. The reset ratios for the
other OCN elements are also provided.
Miscellaneous functions
2.7.5
IEC-NI IEC-VI IEC-EI

✓
✓
✓
✓† ✓† ✓†
IDMT
UK-LTI IEEE-MI IEEE-VI
✓
✓
✓
✓† ✓ ✓
✓
✓
).
- 201 -
6F2S1915 (0.46)
IEEE-EI US-CO2 US-CO8
✓
✓
✓
✓ ✓ ✓
✓
✓
✓
Technical description:
GRZ200 (Soft 031 & 032)
Original
✓
✓
✓