35kV Single-Core Cold Shrink Straight-Through Joint
- 35kV single-core cold shrink straight-through joint for medium-voltage XLPE-insulated power cables.
- The RIKI 35kV range covers cable voltage designations of 21/35kV and 26/35kV, subject to matching the selected joint to the actual cable.
- Four conductor cross-section selections: 35โ120, 150โ240, 300โ500 and 630 mmยฒ.
- Intended for in-line cable connections where conductor continuity, insulation restoration and metallic-screen arrangements must be addressed.
- Cold shrink components contract without applied heat; final selection also requires cable insulation dimensions and connector details.
Why โ35kVโ Alone Is Not Enough for a Cable Joint RFQ
A purchase enquiry stating only “35kV cold shrink joint, 240 mmยฒ” leaves an important question unanswered: which 35kV cable construction is being joined?
The RIKI catalog identifies 21/35kV and 26/35kV XLPE-insulated cables within its 35kV cold shrink accessory range. These designations should not be treated as identical merely because they share the same nominal conductor-to-conductor voltage. The voltage between conductor and earth differs, making the exact cable rating an essential part of the joint selection.
Start with the Cable Marking
Before selecting a kit, record the complete voltage designation from the cable specification, not simply the maximum voltage quoted for the network. A matching product category is only the first step. The joint must be appropriate for the electrical insulation system and the specified application.
The available single-core product range is divided into four conductor-size groups: 35โ120, 150โ240, 300โ500 and 630 mmยฒ. This differs from the five-size arrangements used in the lower-voltage cold shrink ranges. The largest conductor size has its own catalog selection rather than being included in the 300โ500 mmยฒ group.
The Diameter Behind the Conductor Size
Cold shrink joint selection cannot be finalized from conductor area alone. XLPE insulation thickness, the outside diameter over the prepared insulation and the conductor connector dimensions all affect component fit. A cable with a larger insulation diameter is not necessarily accommodated by a kit selected solely on its conductor size.
The connector also occupies space inside the joint assembly. Its dimensions and compatibility with the specified conductor material should be established before the accessory package is finalized. Any dimensional limits must come from the actual selected joint and connector documentation.
Restoring More Than the Conductor
At a medium-voltage cable joint, the connection interrupts several parts of the original cable construction. Electrical insulation and the metallic screening system must be addressed, while the outer protective arrangement must suit the intended installation.
Screen construction is therefore another required item on the enquiry. The customer should identify whether the cable uses a copper wire screen, copper tape screen or another construction, together with the required bonding arrangement. The product photograph does not establish that one accessory configuration covers every screen design.
For a reliable quotation, provide the voltage designation, conductor size and material, insulation outside diameter, metallic-screen details and connector requirements. If the two cable ends differ, supply the specifications of both. Underground or water-exposed applications require additional confirmation of the completed joint system’s suitability.
35kV Single-Core Joint Size Codes and XLPE Cable Data
| Product Name | 35kV Single-Core Cold Shrink Straight-Through Joint |
|---|---|
| Brand | RIKI |
| Manufacturer | Zhejiang Ruikai Electric |
| Product Category | Cold Shrink Cable Accessories |
| Product Type | Medium Voltage Straight-Through Cable Joint |
| Voltage Class | 35kV |
| Catalog Cable Voltage Designations | 21/35kV and 26/35kV |
| Cable Configuration | Single-Core |
| Applicable Cable Insulation | XLPE |
| Joint Configuration | Straight-Through / In-Line |
| Installation Technology | Cold Shrink |
| External Heating for Sleeve Contraction | Not Required |
| Available Conductor Cross-Sections | 35โ630 mmยฒ across four selections |
| SKU and Applicable Cable Section | |
| SKU: JLS-35/1.1 | 35โ120 mmยฒ |
| SKU: JLS-35/1.2 | 150โ240 mmยฒ |
| SKU: JLS-35/1.3 | 300โ500 mmยฒ |
| SKU: JLS-35/1.4 | 630 mmยฒ |
Voltage designations and conductor ranges are based on the published RIKI 35kV cold shrink cable accessory catalog. The exact product selection must be checked against cable insulation diameter, conductor connector dimensions, screen construction and the relevant project requirements. No individual SKU certification or environmental protection rating is implied by this table.
Frequently Asked Questions (FAQ)
Is the 35kV joint specified for 21/35kV or 26/35kV cable?
The RIKI catalog lists both 21/35kV and 26/35kV XLPE cable designations under its 35kV cold shrink accessory family. That statement does not eliminate the need to verify the exact selected joint against the cable and applicable qualification documents. Include the full voltage designation and insulation dimensions in the enquiry, rather than ordering by “35kV” alone.
Why does the 630 mmยฒ conductor have its own kit selection?
In the published single-core straight-joint table, 630 mmยฒ is a separate selection; the previous selection ends at 500 mmยฒ. This is a catalog-size distinction, not evidence of a particular connector design. Specify the conductor material, connector dimensions and insulation outside diameter for that option, especially when replacing an existing large-section feeder.
Does the catalog’s impulse test figure certify every straight-joint size?
No. The catalog presents 35kV-series electrical test information, but the table does not identify an individual test certificate for every straight-joint size. For a tender requiring a specific test standard, report or third-party certification, request documentation showing the exact product and applicable test scope. A series-level technical reference should not be presented as proof of SKU-level certification.
Does one single-core splice kit cover an entire three-phase circuit?
No. A single-core joint is intended for one single-core cable, not an entire three-phase circuit by itself. Where a circuit is built from three individual single-core cables, separate jointing arrangements are normally required for the conductors being spliced. Confirm the number of cable runs, the quantity of kits needed and whether accessories are supplied per joint or per work package.
Single-Core 35kV Cable Jointing Across Feeder and Replacement Projects
Feeder Section Replacement
Joining compatible sections of a single-core 35kV-class XLPE feeder when part of a cable route is renewed or replaced.
Cable Renewal ยท In-Line Joint
Distribution Feeder Extensions
Providing an in-line connection where a compatible single-core XLPE cable feeder must continue beyond an existing cable section.
Distribution Cable ยท Route Extension
Large-Conductor Cable Work
Specifying jointing kits for larger single-core conductors, including the separately listed 630 mmยฒ size selection.
300โ500 mmยฒ ยท 630 mmยฒ
Separate Single-Core Phase Runs
Planning individual jointing arrangements for phase conductors when a medium-voltage circuit uses separate single-core cables.
Single-Core Runs ยท Project Planning
