Fluke 6135A/PMU, Руководство оператора

Страница: 84 / 160

6135A/PMU
Operators Manual
4-14
Note
The System Software can support PMUs with inputs set to ratios other than
1:1. This allows PMUs which use input transducers, (transformers, current
coils, and more), to be measured with their normal operating settings and
without the need to modify these settings for testing. The UUT must be
connected directly to the System without any input transducers during
testing because they will affect the measurement.
The system applies the output directly to the PMU input and not through
the transducer. The System, therefore, represents the output of the
transducer. For example, when the system applies 100 V to the input of a
PMU which has an input ratio setting of 10:1, the PMU reports 1000 V.
The system calculated magnitude of the model, (Actual), used to calculate
TVE is also adjusted to allow for the PMU input ratio settings since this
value has to match the PMU reported value.
Configure the UUT Phase Order
After connected to the UUT, the UUT phase order must be configured. The UUT phase
order lets the PMUCal Software know which UUT voltage and current phase inputs are
connected to the 6135A Phase A, Phase B, and Phase C terminals. Use the UUT phase
order configuration window (see Table 4-3) to manually configure the UUT phase order.
Notes
If you change a UUT configuration parameter such as the reporting rate
or nominal frequency, you must use the PMU personality profile dialog to
get the UUT configuration again.
A saved UUT phase order can be updated or changed after you have
configured the connection. To change a UUT phase order, click Settings in
the main navigation menu and then click Edit PMU Personality.
To set the UUT phase order (refer to Table 4-3):
1.
Click on the UUT Phase Input combo box and select the UUT phase input. Repeat
for each UUT phase input.
Note
The UUT phasor names and order for the voltage and current phase inputs
are unique to each UUT model and often can be changed in the UUT
configuration. Some phasor names can be easily understood while some are
difficult. To prevent a phase mismatch, refer to the UUTs users
documentation for the UUTs phasor names and information.
2. Click
Save
to save the file for future use (if desired).
3. Click
Done
to continue.