Shihlin electric BW-2000, Manual, Page: 13 / 42

ACB-OB
10
AIR CIRCUIT BREAKER
Self-diagnosed functions
When the working environment of the controller exceeds 65
o
C or when 60% of the contact has been worn off,
or when the circuit breaker cannot be tripped, the light "TAL" on the controller panel will be on to alert the user.
Relevant parameters will be recorded for later inquiry.
Thermal memory functions
Repeated overload can heat up the conductor or other devices. The controller can simulate the heating conditions
as well as the overload long-delay, short-circuit delay, and other fault or delay actions to generate the thermal
effect (simulating characteristics of the double-metal piece). The overload long-delay thermal effect energy will
be completely released in 30 minutes after eliminating the fault. For short-circuit delay thermal effect energy, it
will be completely released in 15 minutes after eliminating the fault. During the period, the delay time will be
shortened if the reclosing circuit breaker has overload long-delay or short circuit short-delay. This is to provide
circuits and devices better protection.
If the controller is turned off first and then turned on, all the accumulated thermal effect will be cleared.
The factory default of this function is "ON", which means that the thermal memory function is running.
System clock function
The system has a clock function for recording the time and date when faults happen. For adjusting the system
clock, the method is presented in 8.2.3.
Alert signal function (Only for XSIC-P controllers)
The controller has four sets of independent signal contact output. This function can be set using the control panel
or remote communication. For contact function, please refer to Table 7. For the factory default of the four contact
sets of the controller, please refer to Table 8.
Table 7. Contact Functions
0
1
2
3
4
5
6
7
8
9
10
11
No definition
Instantaneous fault tripping alert
Short-circuit fault tripping alert
Overload fault tripping alert
Earthing/leakage fault tripping alert
Self-diagnosed fault alert
Machine open alert
Under-phase fault tripping alert
Load1 unloading
Load 2 unload/Load 1 reloading
Remote control, tripping
Remote control, closing
Function Code