Quick answer: A termination kit must match the full cable construction and the equipment interface. Voltage class and conductor cross-section are necessary but not sufficient.
Information required before selection
Use the manufacturer’s cable datasheet or a measured cable construction sheet.
- Rated voltage expressed as U0/U (Um)
- Single-core or three-core construction
- Copper or aluminium conductor and conductor class
- Cross-section and conductor diameter
- XLPE/EPR insulation diameter and screen construction
- Armour, sheath material and overall diameter
- Indoor/outdoor/switchgear/transformer interface and available space
Technical selection framework
| Review area | What the buyer should confirm | Why it changes the supply |
|---|---|---|
| Voltage designation | Match U0/U (Um) and system grounding. | Nominal labels such as “33kV” can refer to different cable designations. |
| Stress control | Confirm insulation diameter and applicable range. | Electrical stress control acts at the screen cut and must fit the cable. |
| Conductor connection | Match material, cross-section, class and lug/connector interface. | A cable kit can be correct while the supplied lug is wrong. |
| Environmental seal | Review indoor/outdoor exposure, pollution, UV, humidity and altitude. | Sheds, creepage and sealing details vary by installation. |
| Equipment interface | Confirm bushing, switchgear compartment and phase spacing. | Termination length and lug orientation must fit the equipment. |
Recommended review sequence
- Identify the exact cable construction.
- Define the equipment and installation environment.
- Select termination technology and range.
- Confirm lugs, grounding, breakout and sealing components.
- Review preparation dimensions and installation instructions.
Common RFQ mistakes
- Ordering “35kV 240mm² termination” without a cable datasheet.
- Confusing 18/30(36)kV with another voltage designation.
- Ignoring wire-screen quantity or armour grounding.
- Failing to confirm indoor/outdoor and equipment clearances.
What a quotation package should contain
The supplier should provide the kit designation, cable applicability range, component list, preparation dimensions, installation instructions, lug/connector details, grounding components, packing labels and test-document scope.
Need equipment matched to your project?
Project-based example
For a 36(42)kV accessory package, the same conductor size required separate confirmation for single-core outdoor terminations and straight-through joints. Core construction and installation position were treated as independent selection fields.
Standards note: IEC 60502-4 is commonly referenced for accessories used with extruded-insulation power cables up to 30kV (Um 36kV). Confirm the exact project voltage designation and required test scope.
