Introduction

LKE's Load Break Switch Panels are air insulated. All LKE panels have the LCA model designation (L to represent the LBS class of panel, C for cable incoming/outgoing, and A for air insulation)

There are three panels to choose from:

(1) LK LCA-A to house the air puffer switch
(2) LK LCA-G to house the gas (SF6) switch
(3) LK LCA-V to house the vacuum switch

Standard LCA panels are indoor systems which are extendable so they can be combined to build larger distribution switchboards or ring main units (RMUs). Custom LCA panels are manufactured for outoor systems based on the NEMA-3 standard.

LCA panels can be combined in series or parallel to build a whole switch board system. This allows for more economical solutions where smaller loads are protected by switches with lower breaking capacity whereas higher loads are protected by switches with higher breaking capacity.

LK LCA-A 12/24 (Air Switch Panel)

Designed for use with the LK-LBS switches, these panels are usually used as incoming units or as isolator units.

The LK-LBS/fuse combination is used usually as transformer protection units for transformers of ratings less than 800 kVA.

The diagrams on the right represent some of the possible arrangements within the LCA-A.

LK LCA-V 12/24 (Vacuum Switch Panel)

The LK-LCA housing the LK-VLBS will protect transformers up to a rating of 5000 kVA. With the LK-VLBS, the panel must be equipped with surge arresters to protect against over-voltages.

Furthermore the LK-LCA-V panels are equipped with current protection relays for overload and short circuit protection.

The diagrams on the right represent some of the possible arrangements within the LCA-V.

LCA-G 12/24 panels housing the LK-GLBS switches (left) and
a look inside the panel (right).

Typical setup for the LCA-A/G/V panels. The picture above
shows how the panels are combined. In this case, LCA-A panels were
deployed as incoming units alongside LCA-V panels deployed
as transformer protection units.