QTech QSR-2920 Series Installation Manual page 69

Installation Manual
7. Appendix
 If the router is directly powered by mains supply, and its power supply voltage exceeds -
10%~5% of the rated voltage, or the voltage range allowed for the router, a voltage
regulation device shall be used to meet the requirements.
 In case the communication load requires uninterruptible or transient-free AC, the UPS or
inverter power supply system shall be used.
 In the case of abnormity of the mains supply, the telecommunication bureau (station) shall
equip self-provided electric generator set as self-contained power supply, to guarantee
important communication load and important power load. The capacity thereof shall be
checked to be not less than 1.5-2 times the total capacity of the AC incessant consumers.
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