Energotek KTP-O single-phase cross-bonding link boxes
Polymer, watertight, up to 500 kV
For cable screen transposition
A set of three single-phase transposition link boxes is a reliable alternative to using traditional three-phase boxes. Because of the physical separation of the three phases by surge arresters, the use of single-phase boxes results in lower repair costs, reduced work volume and repair time, and minimal system downtime following a failure.
Single-phase transposition link boxes lower repair costs through three-phase separation. Their polymer housing resists corrosion, needs no grounding, and ensures personnel safety even with poor grounding loops.
(at least 50 years)
Key advantages
- Lower maintenance costs because the three phases are isolated from each other
- Reliable sealing against moisture ingress (IP68 protection rating according to GOST 14254-2015)
- Electrically safe body that does not require grounding
- Corrosion resistance
- Fire-proof
- Installation without opening the boxes
- Testing of cable sheaths with a constant voltage of 10 kV without disconnecting surge arresters
- Compact design
- Light weight
02 Application area
Cable screen transposition
Intended for 6–500 kV cable screen transposition and outer sheath protection using surge arresters.
One-phase polymer transposition link boxes Energotek KTP-O are installed::
- In special polymer cross-bonding manholes ProtectorFlex® PKET-1500
- In monolithic reinforced concrete manholes
- In cable tunnels
- On trestle structures
- By other agreed methods
We recommend purchasing corrosion-resistant RM-T mounting frame for quick installation of transposition link boxes in monolithic reinforced concrete manholes and its reliable fixation with no drilling the manhole body.
RM-T mounting frame for installation of transposition link boxes03 Product range of transposition link boxes Energotek KTP-O
| Product name | Description |
| Cross-bonding link box Energotek KTP-O/OPN-8.2-550 |
Polymer single-phase cross-bonding link box with surge arrester, operating voltage 8.2 kV and current passing capacity 550 A |
| Cross-bonding link box Energotek KTP-O/ZML |
Polymer single-phase cross-bonding link box with no surge arrester for cross-bonding screens at adjacent cycles joints |
04 Main technical properties of Energotek KTP-O single-phase transposition link boxes
| Properties | Value |
| Overall dimensions WxHxD, mm | 110х300х210 |
| Weight, kg | Maximum 6 |
| Protection against dust and damp | IP68 according to GOST 14254-2015 |
| Box climatic category | UHL, category 1 |
| Design | Supplied as a set of three pieces |
05
Standart
documentation
- TU 27.33.13-027-39082310-2025
06
Example wording for categories
or technical specifications:
- Cross-bonding link box ENERGOTEK KTP-O/OPN-8.2-550 TU 27.33.13-027-39082310-2025
Single-phase polymer watertight cross-bonding link box with surge arrester, working voltage 8.2 kV and current carrying capacity 550 A - Cross-bonding link box ENERGOTEK KTP-O/ZML TU 27.33.13-027-39082310-2025
Cross-bonding link box for cross-bonding between transposition cycles, single-phase, polymer, watertight
07 Accessories
Energotek PPS bonding cable (PE insulated)
Connecting, flexible, watertight, flame-retardant
For bringing out screens of single-phase 6–500 kV cables
