Protection; Input Protection; Output Protection - CyberPower CPS3000 Mode D'emploi

Table 4.3 : LED Indication of Saving Mode Selection
Inverter mode
Saving mode
Note: Flash per second.

5.Protection

5.1 Input Protection

(A) Battery Polarity Protection: If the battery input is connected with reversed polarity, the
internal fuse would blow out and the inverter should send back to CyberPower for repair.
(B) Battery Under Voltage Protection : When the battery voltage is lower than the preset
level, the inverter will automatically terminate the output power to protect the batteries
from over-discharging. In the mean time, the "Bat Low" signal on the front panel will light
up. Please refer to Table 3.1 for more details about the failure signals.
(C) Battery Over Voltage Protection : When the battery voltage is too high, inverter will
automatically terminate the output power and the inbuilt buzzer will be activated to inform
the users. Please refer to Table 3.1 for more detail about the failure signals.
Warning :
Please choose suitable batteries that match the rated input DC voltage of the inverter(refer to
the SPEC). If the input DC voltage is too low (ex. using 12Vdc battery bank for 24Vdc input
models), the inverter can't start up properly. If the input DC voltage is too high (ex. using 48Vdc
battery bank for 24Vdc input models), the inverter will be damaged!

5.2 Output Protection

(A). Inverter fault Indication: When the inverter starts up, the front panel will display failure
signals if any abnormal situation.(Please refer to Table 3.1)
(1) Over Temperature Protection:
When the internal temperature is higher than the limit level, the "Over Temperature
Protection" will be activated. The unit will be automatically turned off and require reboot.
(2) AC Output Abnormal Protection:
When the AC output voltage is too high or too low, the unit will be turned off and
require reboot.
(3) AC Output Short Circuit Protection:
When a short circuit situation of output side occurs or the load level increase greatly
in a short period of time, the unit will be turned off and require reboot.
(4) Battery Voltage Abnormal Protection:
When the battery voltage is too high or too low, this protection will be activated. The
inverter will be auto-recover after the battery voltage regains safe level and do not
require reboot.
(5) Output Overload Protection:
When output is overloaded between 100%~115%, the inverter can provide power
for 3 minutes; between 115%~150%, the inverter can provide power for 10 seconds;
between 150%~200%, the inverter can provide power for 500 millisecond. If the
overload condition still does not resolve accordingly, the overload protection will be
activated. Once the overload protection is activated, the unit should be reset to recover.
LED : Green
Status
Battery
Load
Status
Battery
Load
Light on. Light off
EN
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