7/23/2019 Advantages of Cast Resin Busbars vs Rip & Cable

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COMPARISON CAST RESIN BUSBAR VS RIP & CABLE

1) Advantages of cast resin busbar vs RIP (Resin Impregnated Paper)

Until 17,5 kV cast resin busbars are a more compact solution than RIP busbars (in particular

bends). RIP busbars require a higher bend radius (min. 500mm) where the bend radius for cast

resin busbars is very small.

RIP busbar junctions are air insulated, which doesnt make the line entirely IP67 protected. Cast

resin junctions are filled with a resin mix which guarantees IP67 protection over the entire length

of the busduct.

Air trapped in the junctions - e.g. during shutdown for maintenance - might condensate in a RIP

junction. This reduces electric rigidity to earth and causes loss of protection against hazardous

chemicals. Cast resin junctions are filled with resin mix, so no condensation occurs and

protection remains solid.

Installation time for cast resin busbars is shorter e.g; only one 3-phase element has to be

installed with cast resin busbars instead of 3 separate phases with RIP busbars

Higher mechanical strength - IK10

2) Advantages of cast resin busbar vs cable:

High mechanical strength IK10

Protection against chemical hazardous gases and/or liquids.

Compact solution for areas with limited access

Compact solution for making bends: the higher the current becomes, the higher the space

required for making bends (higher bend radius with cable)

In case of failure, the damaged section can be relatively easy removed, because the busbar

line is an assembly of joint elements.

Connection to feeder/ user (TRF, Gen, Panel, breaker,.): in particular for higher currents

where more cables are needed, this solution becomes very complex. Connection with cast resin

busbars is easy due to customized terminal elements.

Better current repartition within each phase

Easier to connect to supports for withstanding short circuit forces (no risk of whip effect of any

flexible cable)

Less bolted junctions

Shorter installation time thanks to prefabricated elements

Better fire withstand