10.4.2.7 Test the AC Voltage Inputs
This test verifies that the accuracy of voltage measurement is within the acceptable tolerances.
Apply rated voltage to each voltage transformer input in turn; checking its magnitude using a
multimeter/test set readout. The corresponding reading can then be checked in the relays menu.
The voltage measurement accuracy of the relay is ±0.5%. However an additional allowance must
be made for the accuracy of the test equipment being used.
Voltage channel linearity and precision checkout
Table 10.4.2 Voltage channel checkout
10.4.2.8 Test the Binary Inputs
This test checks that all the binary inputs on the relay are functioning correctly.
The binary inputs should be energized one at a time, see external connection diagrams for
terminal numbers.
Ensure that the voltage applied on the binary input must be within the operating range.
The status of each binary input can be viewed using the submenu “Contact Inputs” and “Prot
Inputs”.
Binary inputs testing checkout
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