Verifying Analog Primary And Secondary Measurement - ABB RET650 Series Commissioning Manual

1MRK 504 136-UUS B
1. Click the Function test modes menu.
The Function test modes menu is located in the local HMI under Main menu/Tests/Function
test modes.
2. Browse to the function instance that needs to be released.
3. Set parameter
6.6

Verifying analog primary and secondary measurement

Verify that the connections are correct and that measuring and scaling is done correctly. This is
done by injecting current and voltage to the IED.
1. Inject a symmetrical three-phase voltage and current at rated value.
2. Compare the injected value with the measured values.
The voltage and current phasor menu in the local HMI is located under Main menu/
Measurements/Analog primary values and Main menu/Measurements/Analog secondary
values.
3. Compare the frequency reading with the set frequency and the direction of the power.
The frequency and active power are located under Main menu/Tests/Function status/
Monitoring/CVMMXN/CVMMXN:1/Outputs. Then navigate to the bottom of the list to find
the frequency.
These checks shall be repeated for Analog primary values.
4. Inject an unsymmetrical three-phase voltage and current, to verify that phases are correctly
connected.
If some setting deviates, check the analog input settings under
Main menu/Configuration/Analog modules
Measured values such as current and voltages as well as active, reactive and apparent power,
power factor phase angles as well as positive and negative and zero sequence currents and
voltages are available in the local HMI under Main menu/Tests/Function status/Monitoring.
Navigate to the measurement function that contains the quantity to be checked.
Table 2:
Function
CMMXU
CMSQI
CVMMXN
Table continues on next page
Transformer protection RET650
Commissioning manual
Blocked for the selected function to No .
Apply input signals as needed according to the actual hardware and the application
configuration.
Check both analog primary and secondary values, because then the CT and VT
ratios entered into the IED are also checked.
Measurement functions
© Copyright 2013 ABB. All rights reserved
Quantity
IA to IC
3I ; I1 and I2
0
S; P; Q; PF; Ilag; Ilead; U; I and f
Testing IED operation
Description
amplitude, range and angle
amplitude, range and angle
amplitude, range and angle
Section 6
M11745-2 v10
43