TBEM / TDC / TBF / MBI bimetallic and tinned aluminium lugs and Al–Cu sleeves, 16–400 mm²
Country: Spain · Model: TBEM / TDC / TBF / MBI
The lugs TBEM, TDC, TBF and the sleeves MBI connect aluminium cables to copper busbars and equipment terminals for cross-sections of 16–400 mm² without electrochemical corrosion. There are two design types, solid tinned aluminium and bimetallic Al–Cu with friction welding. They are used in 10(6)/0.4 kV substations and in distribution networks.
- Material
- aluminium alloy ≥ 99.5 %; electrolytic copper > 99.9 % (TBF palm, TBPE, MBI)
- Al–Cu joint
- friction welding (TBF, TBF/CM, TBPE, MBI, RJAU)
- TDC/S cross-section
- 16–400 mm²
- TBF cross-section
- 16–400 mm²
Technical specifications
| Material | aluminium alloy ≥ 99.5 %; electrolytic copper > 99.9 % (TBF palm, TBPE, MBI) |
|---|---|
| Al–Cu joint | friction welding (TBF, TBF/CM, TBPE, MBI, RJAU) |
| TDC/S cross-section | 16–400 mm² |
| TBF cross-section | 16–400 mm² |
| TBEM cross-section | 50–240 mm² |
| MBI cross-section | 50–240 mm² |
| Coating | electrolytic tinning of the whole surface (TBEM, TDC) |
| Standards | UNE 211024-2 with AENOR mark (TDC/S), NF C33-090-1 and tests per IEC 61238-1 (TBF, RJAU) |
| Versions | TBEM/A, TBEM/S, TDC/A, TDC/S, TDC/S KIT (insulated), TBF, TBF/CM, TBPE, sleeves MBI, RJAU |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
In the first type the lug is made entirely of aluminium bar with a purity of at least 99.5 %, and the surface is electrolytically tin-plated, so the aluminium does not touch the copper. These are TBEM/A and TBEM/S for 50–240 mm², TDC/A for overhead lines and TDC/S for underground networks for 16–400 mm². TDC/S is made to UNE 211024-2 with the AENOR mark, and TDC/S KIT is supplied with a synthetic rubber insulating cap, phase or neutral marking rings and washers. In the second type the aluminium tube is friction-welded to a palm of electrolytic copper with a purity above 99.9 %, so the Al–Cu transition lies inside the product. These are TBF for 16–400 mm² per NF C33-090-1, tested to IEC 61238-1, as well as TBF/CM, TBPE and the sleeves MBI for 50–240 mm² and RJAU. The neutral grease in the tube protects the aluminium from oxidation. Deep stepped crimping is done with hydraulic heads, for example with the CH-20P set for 300/400 mm² lugs.
How to choose
Both types connect an aluminium cable to a copper busbar. The tinned aluminium TBEM or TDC is chosen by location, suffix A for overhead lines and S for underground ones. A bimetallic TBF or an MBI sleeve is taken when an Al–Cu transition inside the product is needed. For cables above 400 mm² without a transition, look at the TBE/D lug for 25–500 mm².
Request a price and lead time
TBEM / TDC / TBF / MBI bimetallic and tinned aluminium lugs and Al–Cu sleeves, 16–400 mm². We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What cross-sections do TDC/S and TBF cover?
Both are made for 16–400 mm², while TBEM and MBI are made for 50–240 mm².
To which standards are these lugs made?
TDC/S to UNE 211024-2 with the AENOR mark, TBF and RJAU to NF C33-090-1, and TBF tested to IEC 61238-1.
What is included in the TDC/S KIT?
A synthetic rubber insulating cap, phase or neutral marking rings and washers.
How are bimetallic lugs crimped?
By deep stepped crimping with hydraulic heads and presses, for example the CH-20P set with dies for 300/400 mm² lugs.
What is the palm of the bimetallic lugs made of?
Electrolytic copper with a purity above 99.9 %, which is joined to the aluminium tube by friction welding.
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