ABB CKO-5, Manual

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Type CKO Overcurrent Relay 41-101.3A
21
make with the moving contact. Both stationary con-
tacts should make at approximately the same time.
The contact follow will be approximately 1/ 64" to
3/64".
a. Close the contacts of the CO and pass sufficient
dc current through the trip circuit to close the con-
tacts of the (ICS/T). This value of current should
not be greater than the particular (ICS/T) tap set-
ting being used. The operation indicator target
should drop freely bringing the letter "T" into view.
b. Close contacts of instantaneous overcurrent unit
(I). Pass sufficient dc current through the trip cir-
cuit to close contacts of the (ICS/I). This value of
current should not be greater than the particular
(ICS/I) tap setting being used. The operation indi-
cator target should drop freely bringing the letter
"I" into view.
8.0 RENEWAL PARTS
Repair work can be done most satisfactorily at the
factory. However, interchangeable parts can be fur-
nished to the customers who are equipped for doing
repair work. When ordering parts, always give the
complete nameplate data.