ABB REL670 Installation And Commissioning Manual page 146

11.1.3
138
Control
2. Check that the two outputs are not activated.
The test can be repeated with different frequency values to verify that the
function operates for values lower than the set ones. If a modern test set
is used, the frequency can be changed continuously.
Testing the reference voltage
Procedure
1. Use the same basic test connection as in
The UDiff between the voltage connected to U-bus and U-line should be
0%, so that the AUTOOK and MANOK outputs are activated first.
2. Change the U-Line voltage connection to U-Line2 without changing
the setting on the local HMI.
3. Check that the two outputs are not activated.
4. The test can also be repeated by moving the U-line voltage to the
U3PLN input.
Testing the energizing check
During test of the energizing check function for a single bay arrangement, these voltage inputs
are used:
U-line UL1, UL2 or UL3 voltage input on the terminal.
U-bus U5 voltage input on the terminal
General
At test of the energizing check function for the applicable bus, arrangement shall be done for the
energizing check functions. The voltage is selected by activation of different inputs in the volt-
age selection logic.
The test shall be performed according to the settings for the station. Test the alternatives below
that are applicable.
Testing the dead line live bus (DLLB)
The test should verify that the energizing check function operates for a low voltage on the
U-Line and for a high voltage on the U-bus. This corresponds to the energizing of a dead line to
a live bus.
Procedure
1. Apply a single-phase voltage 100% UBase to the U-bus, and a sin-
gle-phase voltage 30% UBase to the U-line.
2. Check that the AUTOENOK and MANENOK outputs are activated.
Verifying settings by secondary
figure 32.
Chapter 11
injection