Toshiba GR-200 Series Instruction Manual page 114

Inverse, "IEEE-MI " for IEEE Moderately Inverse, "IEEE-VI" for IEEE Very Inverse, "IEEE-EI"
for IEEE Extremely Inverse, "US-CO2" for US CO2 short time inverse, "US-CO8" for US CO8
inverse, and "Original" for user-programmable characteristic.
In the IDMT operation, the user can also program the characteristic using time-
multiplier-setting (TMS) for the required operate time. For example, when the IEC
characteristic is selected, the user can set the TMS value using the setting [OCN1-TMS-IEC]
(incidentally, the default value of the TMS is 1.00). The other TMSs are also available by the
[OCN1-TMS-UK], [OCN1-TMS-IEEE], [OCN1-TMS-US] and [OCN1-TMS-ORG].
Curve type
(IEC 60255-151)
A
B
C
-
D
E
F
-
-
Table 2.5-1 Constants for IDMT
Curve Description
IEC Normal Inverse (IEC-NI)
IEC Very Inverse (IEC-VI)
IEC Extremely Inverse (IEC-EI)
UK Long Time Inverse (UK-LTI)
IEEE Moderately Inverse (IEEE-MI)
IEEE Very Inverse (IEEE-VI)
IEEE Extremely Inverse (IEEE-EI)
US CO8 inverse (US-CO8)
US CO2 short time inverse (US-CO2)
- 95 -
6F2T0200 (0.15)
k α
0.14 0.02
13.5 1
80 2
120 1
0.0515 0.02 0.114
19.61 2 0.491
28.2 2 0.1217
5.95 2
0.02394 0.02 0.01694
GRE200 (1,2)
c
0
0
0
0
0.18