NR Electric PCS-9611, Instruction Manual

Page: 279 / 300

12 Commissioning
PCS-9611 Feeder Relay
12-7
Date: 2014-04-08
12.5.2.6 Test the AC Current Inputs
This test verifies that the accuracy of current measurement is within the acceptable tolerances.
Apply current equal to the current transformer secondary winding rating to each current
transformer input of the corresponding rating in turn, see the following table or external connection
diagram for appropriate terminal numbers, checking its magnitude using a multimeter/test set
readout. The corresponding reading can then be checked in the relays menu.
The current measurement accuracy of the relay is ±2.5%. However an additional allowance must
be made for the accuracy of the test equipment being used.
Current channel linearity and precision checkout
Item Practical Input Measurement (on LCD) Error
Ia
Ib
Ic
I01
I02
I0s
12.5.2.7 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 us ing 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
Item Practical Input Measurement (on LCD) Error
Ua
Ub
Uc
U0
Ux
12.5.2.8 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 sub
menu “
Contact Inputs
” and “
Prot
Inputs
”.