The UPS could be a double conversion or a delta conversion or rotary type. The static bypass switch provides a means to accomplish high-speed transfer to the bypass path in case of UPS failures. Also, the static bypass switch is used to bypass the UPS so that maintenance can be performed on the UPS. Because electromechanical contactors and circuit breakers are not fast enough to accomplish such high-speed transitions, a power disruption could occur. A static bypass switch is employed to provide uninterrupted power to the load during normal-to bypass and bypass-to-normal transitions.
Alpha SNMP cards are an interface between the UPS and the network. Cards can communicate the status of a UPS and issue commands to it. All Alpha SNMP cards support SNMP and HTTP protocols for user access. Through the SNMP NMS and/or Web Browser, users can monitor the UPS status, issue commands, and set up the SNMP card through the network
Solar street lights are raised light sources which are powered by photovoltaic panels generally mounted on the lighting structure or integrated in the pole . Most solar panels turn on and turn off automatically by sensing outdoor light using a light source. Solar streetlights are designed to work throughout the night. Many can stay lit for more than one night if the sun is not available for a couple of days. Older models included lamps that were not fluorescent or LED. Solar lights installed in windy regions are generally equipped with flat panels to better cope with the winds.
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