8-channel IP-CCTV surge protection with passive PoE injector, PTU-58R-PRO/InPoE/P

8-channel surge protection, dedicated to protecting 100Mbit LAN networks, PC computers, industrial and building automation systems, and IP-CCTV industrial television installations. It provides protection for data transmission paths and delivers PoE power up to 15W/channel in passive mode. It is recommended for protecting radio bridges, CCTV cameras, automation controllers and lighting, mounted on building facades and other ungrounded structures. High impact resistance of up to 2.5kA for each wire with direct discharge to the ground prevents electronic damage due to induction of high energy in the wires or spark jumps from other installations.

By increasing the supply voltage to 56V, it is possible to transmit up to 20W per channel. The maximum power given is dictated by simple PoE input (without negotiation circuit) and a 350mA automatic fuse. Passive power transmission above 15W @ 48V is not recommended, as damage to the wire or errors in connections can cause damage to LAN ports in end devices. For power transmission up to 30W/port, we recommend using the PTF-58R-PRO/InPoE/A module, which includes an active PSE negotiation circuit.

The product consists of two modules PTU-54-PRO/InPoE/P, mounted in the housing PTU/PTF-5-RACK and can be easily expanded to 16 channels using any PTU-54 or PTF-54 modules.

PoE transmission takes place on transmission lines 1-2, 3-6, similar to the IEEE standard: 802.3af, option A. Pairs 4-5 and -7-8 are completely disabled inside the device. Built-in PoE power protection protects against power surges or power supply failures.

The product can be used with a LAN switch that does not have PoE ports or used to increase the number of PoE ports in case of insufficient power or number of PoE ports in the LAN switch. To power each module, a power supply with a voltage of 48-56V DC and a recommended output of 2A should be used to prevent the power supply from shutting down when the automatic fuse is activated.

The panel is equipped with RJ-45 sockets on the protected side and LSA connectors on the unprotected side. The optional cover PTU/PTF-5/6-COVER protects against dust and accidental damage to the modules, and special holes in the base allow the panel to be mounted on a wall as well. Signal cables can be mechanically secured against pulling out using cable ties, using holes or protrusions on the back of the panel.

In the case of using the panel for CCTV installations with IP recorders, it can be mounted on corner brackets at the back of a Rack cabinet. The benefits of this solution include: more space in the cabinet, convenient access to all connections, and shorter patch cords - IP recorders usually have all their connectors at the back.

The best protection efficiency is achieved by using surge protectors at both ends of the LAN cable and proper grounding. Usually, a multi-channel device is used on the LAN switch side and a 1-channel protector on the end devices. To balance the impact resistance of the entire LAN line, a protector no lower than the PRO or EXT series should be used on the other side of the cable.

PRO series protectors should not be connected to popular patch panels using LSA (Krone) connectors due to their low impact resistance of printed circuits. The best solution is to use cables terminated with simple RJ-45 connectors.

Example of a complete protection and power supply system for IP cameras using an InPoE panel

Technical specification