General
25kV 200A Loadbreak Elbow Connector is a fully-shielded and insulated plug-in termination for connecting underground cable to distribution power system ofpad-mound transformer, surrounding power supply branch box, cable branch boxequipped with loadbreak bushings. The elbow connector and bushing insert comprisethe essential components of all loadbreak connections. It can meet the demandof lines in nuclear.
The Loadbreak Elbows are molded using high quality sulfur-cured inshulation and semi-conducting EPDM rubber. Standard features include a coppertop connector. tin-plated copper loadbreak probe with an ablative arc-follower tip and stainless steel reinforced pulling-eye. An optional capacitive test point, made of corrosion resistant plastic. is available for Use with fault indicators. The available conductor cross section is 25-150mm for 25kV cable. The conductive pole W/ARC extinguishes function.
25kV Order Information
Product Information
General
Key source specifications include Rated Voltage (Ue): 25kV(Applicable 24kV System, Maximum Operating Voltage 24kV); Rated Current (Ie): 200A; Power-Frequency Withstand Voltage: 65kV/5min(Dry Test) / 55kV/5min(Wet Test), No Breakdown / No Flashover; Lightning Impulse Withstand Voltage: 125kV(Peak), No Breakdown / No Flashover.
Features
Ethylene propylene diene monomer (EPDM) rubber insulation is employed to form a fully insulated, weather-resistant cable accessory structure.
A fully insulated and sealed design is identified for safer operation in medium-voltage distribution equipment.
Loadbreak and energized plug-in/pull-out capability are listed where the matched product specification supports switching operation.
Partial-discharge performance is included in the source specification to support long-term insulation reliability.
Waterproof and dust-resistant protection is specified for harsh indoor or outdoor cable-system environments.
Voltage sensing or live-indication capability is included for switchgear monitoring and safety indication.
Application
This 25kV cable accessory is intended for medium-voltage cable connection in ring main units, transformer cable boxes, cable branch boxes, switchgear, and related distribution equipment.
Product Images
Technical Parameters
| Parameter Category | Item | Technical Specification |
|---|---|---|
| Rated Electrical Parameters | Rated Voltage (Ue) | 25kV(Applicable 24kV System, Maximum Operating Voltage 24kV) |
| Rated Current (Ie) | 200A | |
| Rated Frequency (fn) | 50Hz/60Hz | |
| Power-Frequency Withstand Voltage | 65kV/5min(Dry Test) / 55kV/5min(Wet Test), No Breakdown / No Flashover | |
| Lightning Impulse Withstand Voltage | 125kV(Peak), No Breakdown / No Flashover | |
| Partial Discharge | ≤10pC(1.5U0at) | |
| Rated Loadbreak Current | 200A( ≥100 | |
| Rated Short-Circuit Withstand Current | 16kA/2s(Selectable 20kA/2s, Cable | |
| Contact Resistance | ≤100μΩ | |
| Structural and Material Parameters | Main Material | EPDM EPDM Rubber(Insulation ) / Tin-Plated Copper |
| Protection Degree | IP67 | |
| CableCross-Section | 25~240mm2( / InsulationCable, Customizable | |
| Interface Standard | 24kV Standard | |
| Grounding Method | Yellow-GreenGroundingLead Wire, Direct Grounding | |
| Environmental Parameters | Applicable Altitude | ≤2000m(High-Altitude Version Customizable) |
| Ambient Temperature | -40°C to +90°C(Operating Temperature), -40°C to +70°C(Storage Temperature) | |
| Relative Humidity | ≤100%(Non-Condensing) | |
| Seismic Grade | 8 Class | |
| Applicable Standard | IEEE 386 / GB/T 12706 / DL/T 404 / GB/T 11022 |
Model Code Description
| Model Code | Meaning |
|---|---|
| JY | Product Series Code |
| ZT | Loadbreak Elbow Connector |
| 25 | RatedVoltageClass, 24kV System, Maximum Operating Voltage 24kV |
| 200A | RatedCurrentClass, RatedLoadbreakCurrent 200A |
| Loadbreak Elbow Connector | Loadbreak Loadbreak Elbow Connector, Energized Plug-In / Pull-Out |
Order information
Before ordering, confirm interface standard, protection degree, and the required quantity according to the project drawings and source specification.