Manual 37353A
MFR 13 Packages - Protection Relay
Page 36/91
© Woodward
Units with
Packages GPX
/
GPX-I
/
GPY-I
/
GPY-I-N
/
K08
Volt.transformer
sec.(GN) 000V
Generator potential transformer secondary
[1] 50 to 125 V; [4] 50 to 480 V
The potential transformer secondary voltage is set here in V. This parameter is util-
ized to calculate the system voltage in the display. For voltages measured without a
potential transformer, secondary and primary voltage must be configured the same.
Volt.transformer
prim(GN)00.000kV
Generator potential transformer primary
00.100 to 65.000 kV
The potential transformer primary voltage is set here in kV. This entry is used to
show the system voltage in the display.
Volt.transformer
sec.(MN) 000V
Mains potential transformer secondary
[1] 50 to 125 V; [4] 50 to 480 V
The potential transformer secondary voltage is set here in V. This parameter is util-
ized to calculate the system voltage in the display. For voltages measured without a
potential transformer, secondary and primary voltage must be configured the same.
Volt.transformer
prim(MN)00.000kV
Mains potential transformer primary
00.100 to 65.000 kV
The potential transformer primary voltage is set here in kV. This entry is used to
show the system voltage in the display.
Example:
If a voltage of 400 V is measured without a potential transformer, the secondary transformer voltage
must be configured to
400V
and the primary transformer voltage must be configured to
00.400V
.
Current Measurement
Current transf.
0000/0
Current transformer
1 to 9,999/{x} A
The input of the current transformer ratio is necessary for the indication and control
of the actual monitored value. The current transformers ratio should be selected so
at least 60% of the secondary current rating can be measured when the monitored
system is at 100% of operating capacity (i.e. at 100% of system capacity a 5A CT
should output 3A). If the current transformers are sized so that the percentage of
the output is lower, the loss of resolution may cause inaccuracies in the monitoring
and control functions and may affect the functionality of the control.
The control may be ordered with either ../1 A or ../5 A current transformer inputs.
The CT inputs will dictate how this parameter is displayed on the control. Informa-
tion about the current transformers inputs may be found on the unit data plate.
{x} = 1
..........MFR13x
1
B/xxx = Current transformer with ../1 A rated current
{x} = 5
..........MFR13x
5
B/xxx = Current transformer with ../5 A rated current
