Wenzhou Shuowei Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of 35kv 3# inner cone insulator in China, also supports customized service. Welcome to wholesale bulk advanced 35kv 3# inner cone insulator in stock here from our factory. If you have any enquiry about quotation, please feel free to email us.
35KV Inner Cone Insulator
Products Description
The 35kV inner-cone plug-in cable termination is a key high-voltage cable accessory, designed to connect XLPE-insulated power cables to 35kV electrical equipment (e.g., GIS switchgear, transformers) via inner-cone sockets (compliant with EN50181). It features an all-dry, pluggable structure , relying on a pre-molded silicone rubber stress cone to optimize electric field distribution at the cable shield cut-off point.
Its core advantages include quick plug-in installation (reusable for ≥20 cycles), all-insulated/sealed design (resistant to pollution, condensation, and salt spray), and wide adaptability (operating temperature: -40℃ to 95℃; applicable to altitudes ≤3000m). It is widely used in 35kV substations, cable distribution boxes, and transformer connections, delivering reliable electrical performance (partial discharge ≤10pC, power frequency withstand voltage 110kV/5min) for medium-voltage power systems.
Products parameters
| Category | Parameter | Specification |
|---|---|---|
| Basic Parameters | Rated Voltage | 21/35kV (system maximum voltage: 40.5kV) |
| Rated Frequency | 50Hz/60Hz | |
| Applicable Cable Type | Cross-linked polyethylene (XLPE) insulated power cable | |
| Applicable Cable Cross-section | 50mm²～630mm² | |
| Electrical Performance | Rated Current | 630A, 800A, 1250A, 2200A |
| Power Frequency Withstand Voltage (Dry Test) | 110kV/5min, no breakdown or flashover | |
| Lightning Impulse Withstand Voltage (Dry Test) | 200kV (peak), 10 positive/negative polarity tests, no breakdown | |
| Partial Discharge Level | ≤10pC (at 1.73U₀, U₀=21kV) | |
| DC Withstand Voltage | 125kV/15min, no breakdown (only for oil-paper insulated cables; not recommended for XLPE cables) | |
| Mechanical Performance | Plug-in Cycles | ≥20 times (electrical performance remains stable after re-installation) |
| Radial Pressure | Sustained pressure of stress cone on cable insulation ≥0.3MPa (ensures interface insulation) | |
| Environmental Performance | Operating Temperature Range | -40℃～+95℃ |
| Altitude Adaptability | ≤3000m (derating required when altitude >1000m) |
Products Drawing
Products advantage
what can shuowei do?
1.Customized manufacturing per drawings/samples
2.Full-range standard accessories (IEC/ANSI/GB compliant)
3.Professional component selection & solution design
4.Strict pre-shipment testing & certification support
5.Flexible OEM/ODM collaboration
6.Efficient global logistics & reliable after-sales
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