H3C SR6604 Installation Manual

Also see for SR6604: Installation guide Faq Configuration guide Installation manual Installation guide

Contents

H3C SR6604 Installation Manual Manual pdf 54 page image

44• If the live and zero wires are on the right and left respectively (supposing that you are facing thepower receptacle), the polarity of the power receptacle of the power lightning arrester is reversed.In this case, open the power receptacle to correct the polarity. If the red LED is still ON, you can besure that the PE terminal of the power lightning arrester is not grounded.Installing a signal lightning arresterGenerally, you need to connect a signal lightning arrester (a transient over-voltage protection) beforeconnecting a signal cable to the router. This can protect electronic devices against surge over-voltageresulting from lightning strokes and other interferences, and minimize impact on the router.The signal lightning arrester is serially connected to a signal cable, so the signal lightning arrester mustsatisfy the requirements of network performance indexes such as data transmission bandwidth, as wellas the lightning protection performance requirement. Before installing a signal lightning arrester,consider such performance indexes of the lightning arrester as lightning protection, bandwidth,transmission loss, and port type.The SR6604/SR6608 supports the following types of signal lightning arresters:• Voltage-limiting protection – signal lightning arrester – maximum discharge current2.5KA/protection voltage 25V--SMB-75J/ SMB-75J-1W-10Mbps• Voltage-limiting protection – signal lightning arrester – maximum discharge current2.5KA/protection voltage 25V-BNC-75K/ BNC-75K-10Mbps• Voltage-limiting protection – signal lightning arrester (U port) - maximum discharge current3KA/common-mode 400V/differential mode 170V-RJ11CAUTION:• The signal lightning arrester should be grounded as near as possible. The grounding resistance must beless than 4 ohms. The grounding resistance must be less than 1 ohm if there are special groundingrequirements.• Connect the grounding cable to the special-purpose grounding cable of the signal lightning arresterand connect it to the earthing network, instead of connecting it to the lightning rod or lightning belt.Follow these steps to install a signal lightning arrestor:Step1 Use a double-faced adhesive tape to stick the signal lightning arrester to the router. The signal lightningarrester should be as close to the grounding screw as possible.Step2 Cut short the grounding cable of the signal lightning arrester according to its distance to the groundingscrew. Then, fix the grounding cable onto the grounding screw of the router.Step3 Use a multimeter to check the connection between the grounding cable of the signal lightning arresterand the grounding screw of the router.Step4 Follow the instructions to connect the signal lightning arrester with a transit cable. The external cableshould be connected to the IN end and the transit cable to the OUT end. Check whether the LED on theinterface module is normal.NOTE:Read the instructions carefully before installing the signal lightning arrester.Bundle the cables with a cable tie.