H1: Separable Connector DS/SC 8.7/10kV 630A European Type Rear Arrester
Separable Connector DS/SC — 8.7/10kV, 630A, European type rear arrester interface.
Product Summary
The DS/SC is a screened separable connector designed for 8.7/10kV distribution cable systems with a European type rear arrester interface. It is rated 15kV and 630A, and the insulation body is moulded from Ethylene Propylene Diene Monomer (EPDM), with tin-plated copper used on the current-carrying contacts.
Electrical performance is defined by a 1-minute A.C. withstand voltage of 42kV, a 15-minute D.C. withstand voltage of 52kV, a lightning impulse withstand voltage of 95kV and a minimum corona onset voltage of 11kV. Partial discharge is held to ≤10pC, which supports stable long-term operation on medium voltage networks.
Mechanically, the connector uses a separable plug-in structure. Its thermal short-circuit current is 22.8kA/2S and its dynamic short-circuit current is 80.8kA. The construction is specified for anti-condensation and anti-pollution service, and is maintenance free in operation.
Key Features
Separable Plug-In Design
Separable structure with high mechanical strength, allowing the connector to be installed and removed as a screened unit.
Low Contact Resistance
Tin-plated copper current path delivers excellent electrical performance with low contact resistance at the 630A rating.
Low Partial Discharge
Partial discharge ≤10pC together with a minimum corona onset voltage of 11kV supports insulation reliability at 8.7/10kV.
Corrosion Resistant Materials
EPDM insulation and tin-plated copper are selected for harsh environments, including humid and polluted installation points.
Maintenance Free Operation
Anti-condensation, anti-pollution construction reduces the need for routine intervention after commissioning.
Short-Circuit Withstand
Thermal short-circuit current 22.8kA/2S and dynamic short-circuit current 80.8kA for fault-current conditions.
Technical Specifications
Model
DS/SC
Type
8.7/10kV 630A European type rear arrester
Voltage Grade
10kV
Rated Voltage
15kV
Rated Current
630A
1 Minute A.C. Withstand Voltage
42kV
15 Minutes D.C. Withstand Voltage
52kV
Lightning Impulse Withstand Voltage
95kV
Minimum Corona Onset Voltage
11kV
Thermal Short-Circuit Current
22.8kA/2S
Dynamic Short-Circuit Current
80.8kA
Partial Discharge
≤10pC
Insulation Material
Ethylene Propylene Diene Monomer (EPDM)
Conductor Material
Tin-plated copper
Models and Options
The documented configuration is model DS/SC — an 8.7/10kV, 630A separable connector with a European type rear arrester interface, rated 15kV. This is the specification available in the current technical data.
Buyers working on a specific network should confirm the voltage grade, rated current and interface arrangement against their project drawings before ordering, because the connector must match the cable accessory set and the arrester position on site.
Materials and Structure
Insulation body: moulded EPDM, selected for electrical insulation plus anti-condensation and anti-pollution behaviour.
Current path: tin-plated copper contacts, contributing to low contact resistance and corrosion resistance.
Structure: separable (plug-in) construction with high mechanical strength, allowing the screened connector to be handled as a unit.
Service profile: designed as a maintenance free component for medium voltage cable systems.
Applications
Power engineering projects
Power transmission systems
Municipal engineering
Building electrical engineering
New energy projects
Customization
The manufacturer, Ningbo Tonyhoo Electrical Technology Co., Ltd., was founded in 1997 and operates a 9,900㎡ factory with 100 employees, an annual output of 200,000 units and a 20-engineer R&D team. About 6% of annual funds are allocated to research and improvement, so project-specific requirements can be reviewed with the engineering team.
Quality management is certified to ISO 9001:2015 under certificate AMTIVO/CN/240246, issued by AMTIVO China Limited, covering manufacture and sales of high-voltage cable accessories. The certificate is valid from 2024-08-13 to 2027-08-12.
Case Study
Client type: Power Engineering Contractor — Albania
Application: Power grid construction
Quantity supplied: 1,087 pcs in 32 cartons
Result: Products delivered on schedule. Stable operation after installation, meeting local power system requirements.
Highlight: Combined high-voltage cable accessories and DC lug solution, with short lead time and reliable electrical performance for European power projects.
FAQ
What voltage class is the DS/SC separable connector built for?
It is specified for a 10kV voltage grade with 8.7/10kV application, and the rated voltage is 15kV.
What is the rated current of this connector?
The rated current is 630A.
How is insulation performance verified in the data?
The datasheet lists a 1-minute A.C. withstand voltage of 42kV, a 15-minute D.C. withstand voltage of 52kV, a lightning impulse withstand voltage of 95kV, a minimum corona onset voltage of 11kV and partial discharge ≤10pC.
Which materials are used in the insulation body and contacts?
The insulation body is made of Ethylene Propylene Diene Monomer (EPDM) and the contacts are tin-plated copper.
Can it be used in humid or polluted environments?
The connector is specified as anti-condensation, anti-pollution and maintenance free, with corrosion resistant materials selected for harsh environments.
What short-circuit current can it withstand?
Thermal short-circuit current is 22.8kA/2S and dynamic short-circuit current is 80.8kA.
Is the factory certified for cable accessory production?
Yes. ISO 9001:2015 certification (AMTIVO/CN/240246) covers manufacture and sales of high-voltage cable accessories, valid through 2027-08-12.
How do I confirm suitability for my project?
Send your cable size, system voltage and interface requirements to the sales team so the separable connector can be checked against your accessory set before ordering.
