User's Manual

Safety Guidelines Hardware Installation Manual
2-4 Airspan Networks Ltd. 02030311-03
2.2.2. Grounding
Only certain WipLL devices are required to have additional grounding. The WipLL
devices that do not require additional grounding have grounding at the main supply
outlet.
Site WipLL device Grounding
BSR Through the mains (via BSDU)
BSDU Additional grounding required (grounding lug at
rear end of chassis)
Base Station:
BSPS Additional grounding required (grounding lug at
rear end of chassis)
SPR Through the mains (via SDA) CPE
IDR Through the mains
2.3. Lightening Protection
WipLL devices comply to the Surge Immunity standard: EN 61000-4-5.
WipLL devices are protected from lightening surges by the fact that the outdoor
devices (BSR and SPR devices) are encased in a plastic chassis. Therefore, if
lightening strikes the device, an electrical circuit cannot be completed, and hence, no
electrical surge can occur.
In addition, WipLL outdoor and indoor (SDA) devices provide high speed data line
protection against direct and induced transient over-voltages surges on the cables.
This capability is provided by the fact that all WipLL device are designed with TVS
(transient voltage suppressor) components that maintain potential differences.
However, Airspan Networks can supply a surge protector composed of a 15-pin D-
type adapter with a grounding wire for geographical areas that have above normal
lightening activity.