User's Manual

SBS-900 Shore Based Radar Systems
Chapter 9: Planned maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 100 of 240
9.6 5-year maintenance three-phase inverter
The 5-year maintenance schedule depends on the static inverter mounted within the Radar
Distribution Unit.
After 5 or 10-years of use, the static inverter located within the Radar Distribution Unit must be
changed as over time the electrolytic capacitors within the inverter can dry out.
A number of versions of the inverter are available as detailed below.
Visual confirmation of the inverter fitted is strongly recommended prior to commencing the procedure
or obtaining spares.
Manufactures part number Unit detail Replacement schedule
VF-S11 Every 5-years
VF-S15
Note: 440V and 220VAC variants
Every 10-years
Vf-nC3 Every 5-years