ISA T1000 PLUS - Line Differential Tests

DOC. MIE91093 Rev. 1.34 Page 131 of 145
Stop any injection, enter the Relay Menu and set the
instrument as follows:
 MENU > TEST CONTROL > Fault Injection > Timed
 Set Tmax = 0.1 s
 MENU > TIMER START / STOP > START >
EXTERNAL > 24 V
With the above selections, the instrument will inject a fault
current for 100 ms every time the GPS issues a pulse (in our
case, every 10 seconds)
1.16. 4 Line differential tests
With reference to the following table
Test #
Test type
Test Execution
1
Static Differential pick up
Single ended injection
2
SOTF pickup
Single ended injection
3
Internal and External faults
Double ended injection
we’ll perform each test one by one:
1.16.4.1 SOTF pick up
This test is performed with a single ended injection. No need
to synchronize with the remote end.
 Press On + Time (Left Arrow) on the T1000 PLUS.