Screened Separable Insulated Electrical Cable Connectors
- Rated voltage:
- 15 kV
- Rated current:
- 630 A
- AC Withstand Voltage for 5min:
- 39 kV
- Partial Discharge:
- 15 kV,Q≤10 pC
- Impulse Withstand Voltage(10 times foreach polarity):
- 95 kV
- Screen Resistance:
- ≤5000 Ω
- Reference standards:
- GB/T 12706.4、IEC 60502-4
Medium-voltage power networks demand reliable cable termination solutions for gas-insulated switchgear, ring main units, and outdoor pad-mounted transformers. Selecting a robust separable cable connector eliminates electric field concentrations, prevents insulation breakdown, and provides reliable moisture isolation in subsurface vaults.
Dielectric Insulation and Substation Safety
Screened separable connectors feature thick high-grade EPDM rubber shielding bonded to an inner conductive insert. This dual-layer configuration provides reliable stress grading and complete surface earthing. Utilizing a precision-molded Separable Connector delivers distinct electrical performance benefits:
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Touchproof outer conductive screens ensure zero surface voltage, protecting maintenance personnel during routine inspection cycles.
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Molded geometric stress cones manage electrical field gradients, maintaining partial discharge extinction levels well above operating voltages.
Technical Specifications
| Parameter | Rated Value | Standard Reference |
|---|---|---|
| System Voltage | 8.7 / 15 kV | IEC 60502-4 |
| Continuous Current | 630 A | EN 50180 / EN 50181 |
| AC Withstand (5 min) | 42 kV | CENELEC HD 629.1 |
| Bushing Interface | Type C (M16 bolted) | EN 50181 |
| Conductor Cross-Section | 25 – 400 mm² | DIN / IEC |
Installation Protocol and Operational Versatility
Compact switchgear compartments provide minimal clearance, requiring streamlined termination practices. Modern Separable insulated connectors simplify installation through standardized mechanics:
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Clean the XLPE cable insulation and position the pre-molded stress cone without applying open heating torches.
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Tighten the central bolted lug onto standard Interface C bushings using calibrated torque settings.
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Verify line de-energization through built-in capacitive test points prior to disconnection.
Deploying Separable Connectors enhances distribution network resilience across harsh industrial installations. Fully submersible construction withstands permanent water immersion, while standard front plug-in geometry provides rapid circuit reconfiguration and minimal outage durations.
Product features
The 630 A front plug-in cable connector directly connects to the incoming and outgoing bushings of switchgear and the bushings of cable branch boxes, providing fully insulated and safe circuits for switchgear and cable branch boxes.
During front plug-in operation, it is bolted to the switchgear bushing seat; the rear end can be directly sealed with an insulator or extended to connect to a rear connector arrester. Utilizing advanced post-injection technology, the outer layer has a semi-conductive layer that acts as a shield, is touch-safe, and ensures personal safety. The unique stress cone structure effectively disperses electric field stress and addresses electric field stress issues at the cut-off point of the cable shielding layer. It offers expandability, flexible disassembly, and assembly, enabling T-type cable connections, and is fully sealed, fully insulated, fully protected, maintenance-free, submersible-resistant, and pollution-resistant.
The product complies with the C-type bushing design standards in EN50180 and EN50181.
Technical Data
| Rated voltage | 15 kV |
| Rated current | 630 A |
| AC withstand voltage (5 min) | 39 kV |
| Partial Discharge | 15 kV,Q≤10 pC |
| Impulse withstand voltage (± polarity, 10 impulses each)) | 95 kV |
| Screen Resistance | ≤5000 Ω |
| Reference standards:GB/T 12706.4、IEC 60502-4 | |
Models Selection
| Product model | Nominal Cross Sectional(mm²) | 8.7/15 kV Outer Diameter of Cable Insulation(mm²) |
| GHD-15/630A-QC-25 | 25 | 16.6 |
| GHD-15/630A-QC-35 | 35 | 17.6 |
| GHD-15/630A-QC-50 | 50 | 19 |
| GHD-15/630A-QC-70 | 70 | 20.6 |
| GHD-15/630A-QC-95 | 95 | 22.2 |
| GHD-15/630A-QC-120 | 120 | 23.6 |
| GHD-15/630A-QC-150 | 150 | 25.2 |
| GHD-15/630A-QC-185 | 185 | 26.7 |
| GHD-15/630A-QC-240 | 240 | 29 |
| GHD-15/630A-QC-300 | 300 | 31.2 |
| GHD-15/630A-QC-400 | 400 | 34.4 |
| GHD-15/630A-QC-500 | 500 | 38 |
Product accessory Illustration
