Blackburn LTL400D3965 L XFORM LK 6 9/16H 12.7X152.4X965MM

965 mm long overall, with the braid measuring 12.7 x 152.4 mm in section. That 965 mm length gives you the span between the transformer pad and the bus connection point, so measure the gap plus the slack you want for thermal movement before choosing this length over a shorter link.

The link is built to IEEE / ANSI C37 and 34. If you are writing a substation or switchgear spec that calls out those standards for connectors, this one is stated to them. It is also made in the United States, which matters if your job carries a domestic sourcing requirement.

It is a flexible flat braid of tin-plated copper. The tin plating is there to resist oxidation at the bolted contact surfaces, which is what keeps the joint resistance stable in an outdoor or damp substation environment. Copper construction keeps conductivity high for heavy transformer secondary current.

A solid bar transmits every bit of vibration and thermal growth straight into the bushing stud. The LTL400D3965 is a flexible braid, so it absorbs transformer vibration and the expansion and contraction that comes with load cycling, and it lets you take up minor misalignment between the transformer pad and the bus without stressing either termination. Where the two connection points are rigidly fixed and perfectly aligned, a bar is simpler; where they move, use the braid.