High-Voltage Insulated Cable Termination

Product Specifications

Technical details and manufacturing context for High-Voltage Insulated Cable Termination

Definition

This component is a specialized wiring device used to terminate high-voltage power cables in industrial and utility applications. It provides electrical insulation, mechanical protection, and a reliable connection point for power distribution systems. The termination is designed for use in substations, power plants, and heavy industrial equipment, where it ensures safe and efficient power transmission. It is supplied to electrical contractors, utility companies, and industrial facilities as part of B2B supply chains for electrical infrastructure projects.

The termination incorporates dielectric materials and stress control elements to manage the electrical field at the cable end, preventing corona discharge and electrical breakdown. It is available in configurations suitable for rated voltages from 12 to 36 kV, rated currents from 630 to 2500 A, and cable sizes from 50 to 1200 mm². The insulation level (BIL) ranges from 150 to 325, and the power frequency withstand voltage is 45 to 95 kV for a 1-minute test. Partial discharge is ≤10 pC at 1.5 U0. The operating temperature range is -40 to 85 °C, and the ingress protection rating is IP54 to IP65. Creepage distance is ≥630 mm for pollution level III. The housing and insulation are made of EPDM rubber, and the weight ranges from 5 to 25 kg depending on size.

These parameters are reference ranges based on IEC 60840, IEC 60228, IEC 60529, and IEC 60815. They must be verified with the legal manufacturer or supplier for the specific model and application. The termination is a component, not a complete system, and its performance depends on proper installation and compatibility with the cable and system design. Always confirm model-specific values and standards before procurement.

Working Principle

The termination creates a controlled electrical field gradient at the cable end using dielectric materials and stress control elements. These components distribute the electric field evenly, reducing stress concentration and preventing corona discharge and electrical breakdown. The insulation materials, such as EPDM and silicone rubber, provide physical isolation and environmental protection. The stress control layer ensures that the field is managed within safe limits, allowing reliable operation under high voltage. The termination also provides a mechanical connection point for the cable conductor, ensuring secure electrical contact and strain relief.

Common Materials

EPDM Rubber, Silicone Rubber, Copper Conductor, Stress Control Material

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated VoltageRequired	12–36 kV	Maximum continuous operating voltage ratingIEC 60840
Rated CurrentRequired	630–2500 A	Continuous current carrying capacityIEC 60840
Insulation LevelRequired	150–325 BIL	Basic Impulse Level for lightning protectionIEC 60840
Cable Size RangeRequired	50–1200 mm²	Compatible conductor cross-sectional area rangeIEC 60228
Operating TemperatureRequired	-40–85 °C	Continuous operating temperature rangeIEC 60840
IP Rating	IP54–IP65 IP Code	Ingress protection rating for environmental sealingIEC 60529
Partial Discharge	≤10 pC	At 1.5 U0IEC 60840
Power Frequency Withstand Voltage	45–95 kV	1 min testIEC 60840
Creepage Distance	≥630 mm	For pollution level IIIIEC 60815
Material	EPDM	Housing and insulation
Weight	5–25 kg	Depends on size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Stress Cone Part
Controls electrical field gradient to prevent corona discharge

Material: Semi-conductive EPDM
Insulation Body Part
Provides primary electrical insulation between conductor and ground

Material: EPDM or Silicone Rubber
Conductor Connector Part
Mechanical and electrical connection to cable conductor

Material: Copper Alloy
Grounding Shield Optional Part
Provides grounding connection for cable shield

Material: Copper Braid
Sealing Boot Optional Part
Environmental seal at cable entry point

Material: EPDM Rubber

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for High-Voltage Insulated Cable Termination.

Manufacturers of High-Voltage Insulated Cable Termination

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

PowerTel Solutions Limited

Jiangsu, CN

Also makes: Power Transmission, Power Distribution, Power Transformer and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Power Cable Termination Kit”
View source page ↗ powertel-solutions.com · checked 2026-08-31

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 17 September 2026

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Inspection readiness

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Supplier transparency

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Frequently Asked Questions

What is the rated voltage range for this termination?

The rated voltage range is 12 to 36 kV, as per IEC 60840. However, the exact rating for a specific model must be confirmed with the manufacturer or supplier.

What materials are used in the termination?

The housing and insulation are made of EPDM rubber, and the termination also includes silicone rubber, copper conductor, and stress control material. These materials provide insulation and mechanical protection.

What standards apply to this termination?

The termination references IEC 60840 for voltage, current, and insulation levels, IEC 60228 for cable size, IEC 60529 for IP rating, and IEC 60815 for creepage distance. Compliance must be verified with the supplier.

What is the operating temperature range?

The operating temperature range is -40 to 85 °C, as per IEC 60840. This range should be confirmed for the specific model and installation environment.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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pressure:	Up to 15 bar internal pressure, 1 bar external minimum
other spec:	IP68 ingress protection, UV resistant for outdoor use
temperature:	-40°C to +90°C continuous, up to +130°C short-term
voltage rating:	Up to 36 kV AC, 52 kV DC