Toshiba GR200 Series Instruction Manual page 1043

OC-DRT relay setting
(i)
An overcurrent relay within the disturbance recorder (OC-DRT) is provided. The user should
set a pick-up value for the relay to commence the disturbance recorder. Use the setting [OC-
DRT]; then set On for the [OC-DRT-EN] if this relay operation is required to commence the
recording.
EF-DRT relay setting
(ii)
An earth fault relay (EF-DRT) is provided; set the pick-up value for the [EF-DRT]; then set On
for the [EF-DRT-EN].
UV-DRT relay setting
(iii)
An under-voltage relay (Line-ground) (UV-DRT) is provided. Set the value for the [UV-DRT];
then set On for the [UV-DRT-EN].
UVS-DRT relay setting
(iv)
An under-voltage relay (Line-Line) (UVS-DRT) is provided. Set the value for the [UVS-DRT];
then set On for the [UVS-DRT-EN].
Maximum number for recording disturbance phenomena
8.3.3
Note that the maximum number for recording the disturbance phenomena depends on the
recording time and the sampling rate. Table 8.3-1 illustrates the maximum number. For
example, the 77 phenomena can be memorized in the disturbance recorder, when the [Record
Time] =1 and the [Sampling Rate] =7.5° elec., if the IED operates in 50Hz system. The user
can also check the maximum number on the IED screen (See Figure 8.3-2).
Table 8.3-1 Max number depending on time settings
Recording
Setting [Sampling Rate] in 50Hz sys.
period set with
[Record Time]
1 sec
3 sec
5 sec
Number of analog quantities and logical signals for disturbance recorder
8.3.4
Ten analog quantities and 256 logical signals are record in a disturbance phenomenon.
Number of analog quantities
(i)
Currents (Ia, Ib, Ic, Ie, Iem) and the voltages (Va, Vb, Vc, Vs, Vs2) are recorded. For more
information about the VCT, see Chapter
analog input
.
Max. recording number for Disturbance phenomena
7.5º 15º
77 151
26 51
15 31
- 1022 -
Setting [Sampling Rate] in 60Hz sys.
7.5º
64
21
13
Technical description: Transformer module for AC
6F2S1915 (0.46)
15º
126
43
26
GRZ200 (Soft 031 & 032)