Operation Manual 37107F
MFR 3 - Multi Function Relay
Page 66/165
© Woodward
CAUTION
If the following parameter values are modified, the values of the following parameters must be verified:
•
mains overvoltage tripping value (at page 112)
•
mains undervoltage tripping value (at page 112)
Parameter
19
Mains volt.trans
secondary 000V
PTs, secondary, mains
[1] 50 to 125 V; [4] 50 to 480 V
The secondary voltage is set here in V. This is the voltage level that will be meas-
ured at the control unit input terminals.
Parameter
20
Mains volt.trans
primary 00.000kV
PTs, primary, mains
[1] 0.005 to 65,000 kV; [4] 0.020 to 65,000 kV
The primary voltage is set here in kV. This entry serves to indicate the primary vol-
tages in the display. If a potential transformer is not used, the measured voltage of
120V would be configured as "
00.120kV
" and 480V would be configured as
"
00.480kV
".
Rated Values of the Voltage
Parameter
21
Gen.voltage
V set 000V
Generator setpoint voltage
[1] 25 to 125 V; [4] 50 to 480 V
This value of the voltage specifies the generator voltage set point for no-load and
isolated operation. This value corresponds with the secondary voltage of the PTs.
Parameter
22
Rated voltage
System 000V
System rated voltage
[1] 25 to 125 V; [4] 50 to 480 V
The rated voltage of the system is entered in this screen. This parameter depends on
the three-phase system in the relevant country. This value corresponds with the
secondary voltage of the PT’.