Huawei LUNA2000-200KWH-2H1 Quick Manual page 33

Installing Fiber Ring Network Communications Cables
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Only professionals are allowed to connect and splice optical fiber cables.
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In the optical fiber ring topology, two optical fiber cables are required.
1. Remove the external mechanical parts from the access terminal box (ATB).
2. Remove the optical fiber cable fastener.
3. Connect one end of the optical jumper to the fiber adapter.
4. Route the other end of the optical jumper through the cable hole on the side of the ATB,
and connect the cable to the ATB.
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