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1. Technical description
1.1. General description
The SG64-B is dedicated for uninterruptible power supply of 4 IP cameras (52VDC power supply).
The main elements of this system include:
- 6 ports PoE switch
- 13,8V buffer power supply with a single 1 x 7Ah / 12V battery
- a converter (DC/DC52115) increasing the voltage to 52VDC (supply of the PoE switch)
In case of power decay, a battery back-up is activated immediately.
The approximate backup time is given assuming that all output ports are used (using typical devices and 7Ah batteria).
The electricity consumption for own needs and the energy efficiency of the power intake track were taken into account. The
exact description of how to perform the calculations can be found at:
"Approximate backup time - assumptions for
Automatic detection of any devices powered in the PoE/PoE+ standard is enabled at the 1
– 4 ports of the switch. The
UP LINK ports is used for connection of another network device e.g. recorder. The LEDs at the front panel indicate the
operation status (description in the table. 8).
The switch is housed in a metal enclosure (color RAL 9003) which can accommodate a 1x7Ah/12V battery. The
enclosure features a micro switch tamper indicating door opening (front panel).
The SG64-B is fitted with two LEDs on the front panel (red LED
– indicates 230VAC power supply of the PSU, green LED
indicates the presence of DC voltage).
The PoE technology ensures a network connection and reduces installation costs by eliminating the need to supply a
separate power cable for each device. This method allows supplying other network devices, such as IP phone, wireless
access point or router.
1.2 Block diagram.
Fig. 1. Block diagram.
