Shihlin electric BW-2000, Manual, Page: 14 / 42

ACB-OB
11
INSTR
UC
TIONS
Simulating calculation of circuit breaker contact wearing rate
The controller will simulate and calculate the circuit breaker's main contact wearing rate according to information
such as the fault current at tripping. The contact value of the controller from the factory is 100%, indicating no
wearing of the contact point. The contact will be worn by a certain level due to every fault induced tripping. If the
value obtained from subtracting the corresponding amount of wearing from the current contact value is less than
40%, the system will send out a self-diagnosed fault alert signal (by the "TAL" light and the contact signal, if such
functions have been set) to notify the user to carry out maintenance.
After changing the main contact of the circuit breaker, the user can reset the initial wear rate to 100% through the
main-machine interface or remote communication.
Table 8. Factory Default Setup for the Four Contact Sets of the Controller
Note: 1. When the overload monitoring function is turned on, the functions of contact 3 and 4 are fixed to "Load 1
Unloading Output" and "Load 2 and Unloading Output".
2. When the controller has communication functions, contact 1 and 2 are fixed to "Remote control: tripping"
and "Remote control: closing".
XSIC-A
XSIC-P NO
Short-circuit
instantaneous
Contact 1
NC
Short-circuit,
short-delay
Contact 2
Overload
Overload
Contact 3
Self-diagnosis
Self-diagnosis
Contact 4
Controller
types
Contact
code