Manual 37351A
MFR 11 Packages - Protection Relay
© Woodward
Page 29/59
Measurement
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WARNING
The following values must be entered correctly for the generator to be monitored. Failure to do so may
lead to incorrect measuring of parameters resulting in damage to or destruction of the generator or
switchgear and/or personal injury or death.
Voltage Measurement
Volt.-Measuring
----------------
This screen only affects the dis-
played values. The protective
functions are defined below.
Voltage measuring
Phase to phase/phase neutral
This parameter determines how the voltage is to be measured. If this parameter is
set to "
Phase to phase
", the configuration screen "
Volt.-Monitoring
" in
chapter Type of Monitoring on page 33 does not appear.
Potential Transformer Configuration
NOTE
The screens described below are not available in the 690 V versions.
Standard Units (not
Packages SC
&
SC+N
)
Volt.transformer
secondary 000V
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
primary 00.000kV
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
.
