Toshiba GR200 Series - 9.2.2 Setting for measurements; (i) Selecting either primary;secondary values; (ii) Unit setting

6F2S1914 (0.49)
GRL200 (Soft 033 & 037)
- 1190 -
9.2-1 illustrates the information about currents. A reference phasor is defined to examine a
complex data in the metering and a positive-sequence voltage (V1) is defined as the reference.
The metering function has minimum sensing threshold; thus, the user shall notice that zero
(0) is displayed, if the provided data is lesser than the threshold.
Figure 9.2-1 Current meter on the IED screen
Note: If any quantity does not enter to the VCT, the value on the screen is displayed
such as “***.**” and “–––––”.
9.2.2 Setting for measurements
(i) Selecting either primary/secondary values
In the metering function, the value of the primary side is displayed on the screen; when the
value is greater than 1000 volts, it will be displayed in KV unit. When the user prefers
displaying the value of the secondary side, the user should set Secondary for the setting
[Display_Value].Table 9.2-2 shows the effective digit when Secondary is set.
Figure 9.2-2 Metering setting in the setting screen
Note: For the operation of the menu, see Chapter User interface: Setting sub-menu .
Table 9.2-2 Significant digits for metering
Metering screen
Settings
Maximum number of significant
digits after decimal point
Current/Voltage
Phase angle
Voltage
Primary
1
1
Secontray
Current
Primary
2
Secontray
3
(ii) Unit setting
The user can select to a metering unit for each metering value. For example, the current is
Metering
10:48 1/59
I
a
12.345kA 123.45deg
Ib
12.345kA 123.45deg
Ic
12.345kA 123.45deg
Metering
10:48 1/2
Display Value +
Primary
I-Display Unit +
kA
V-Display Unit +
kV