17kV 24kV And 35kV European Elbow Plug-in Surge Arrester
✅Fully Insulated and Sealed
✅Plug-in Connection for Easy Installation
✅Space-Saving
✅Safe and Reliable
- Product Introduction
Products Feature
- Fully Insulated & IP67 Rated: Both the arrester body and its connection interface are fully sealed. This shields the internal components from moisture, dust, condensation, and corrosive environments, ensuring reliability in harsh conditions.
- Plug-and-Play Installation: Eliminates the need for complex screw wiring. Simply align and push/rotate to lock into the cable connector. This reduces installation time by up to 50% and minimizes human error.
- Compact & Space-Saving: The ergonomic elbow design is ideal for confined spaces such as RMUs and compact substations, allowing for high-density cable layouts without compromising safety.
- Hot-Plug Capability: Designed to be installed or replaced under load (using proper insulated tools and procedures), minimizing downtime and enhancing grid availability.
- Modular & Reliable: Featuring a low-resistance contact and a robust stress-control structure, this arrester offers stable performance and easy maintenance as part of a modular distribution system.
Electricl Parameters
| Parameter | 17 kV | 24 kV | 35 kV |
|---|---|---|---|
| Rated System Voltage | 17.5 kV | 24 kV | 35 kV |
| Rated Voltage | 27 kV | 36 kV | 51 kV |
| Continuous Operating Voltage | 21.6 kV | 29.0 kV | 40.8 kV |
| Nominal Discharge Current | 5 kA / 10 kA | 5 kA / 10 kA | 10 kA |
| Steep Current Impulse Residual Voltage | ≤ 67 kV | ≤ 90 kV | ≤ 128 kV |
| Lightning Impulse Residual Voltage | ≤ 60 kV | ≤ 80 kV | ≤ 114 kV |
| Switching Impulse Residual Voltage | ≤ 51 kV | ≤ 68 kV | ≤ 97 kV |
| DC Reference Voltage | ≥ 34 kV | ≥ 45 kV | ≥ 64 kV |
| Square Wave Current Withstand (2ms) | 75 A | 100 A | 150 A |
| Pressure Relief Class | 5 kA | 5 kA | 10 kA |
| External Insulation / Protection | IP67 | IP67 | IP67 |
Product Structure
- Insulation Layer:
Manufactured using a proprietary EPDM formulation and advanced mixing technology, ensuring superior dielectric strength and long-term weather resistance. - Outer Semi-Conductive Layer:
Prefabricated EPDM conductive rubber that strictly complies with IEEE 592 standards, providing reliable shielding and grounding. - Arrester Core:
Features high-performance Zinc Oxide (ZnO) valve discs treated with specialized processes, delivering excellent non-linear characteristics and rapid surge response. - Copper Base Cover:
Seamlessly integrates with the outer conductive layer to provide superior waterproofing and a secure, low-resistance grounding point. - Grounding Wire:
A built-in grounding conductor at the base safely directs lightning surges and transient overvoltages to the grounding system. - Inner Semi-Conductive Layer:
Prefabricated EPDM conductive rubber designed to effectively control and smooth out electrical stress at the connection interface. - Double-Ended Stud:
High-quality tin-plated steel stud ensures a secure, low-resistance electrical connection between the conductor and the connector sleeve. - Insulator End Cover:
A robust protective cap that provides essential insulation, sealing, and environmental protection for the internal components.
Products Application
Ring Main Units (RMUs): Primary protection for 17kV, 24kV, and 35kV gas-insulated or air-insulated switchgear.
Power Transformers: Installed on HV compartments to protect windings from incoming surges.
Renewable Energy Systems: Essential protection for combiner boxes and substations in solar PV and wind farms.
Urban & Industrial Grids: Used in cable distribution cabinets and node switchgear for city networks and rail transit systems.
FAQ
Q: Can this elbow surge arrester be installed or replaced while the equipment is energized?
A: Yes. This arrester features a fully insulated and shielded design, allowing for hot-line installation and removal. However, this must be done using proper insulated tools and strictly following safety protocols.
Q: What standards does this product comply with?
A: Our elbow surge arresters are manufactured and tested in strict accordance with international standards, including IEC 60099-4 and IEEE C62.11, ensuring reliable performance in global power grids.
Q: How does the arrester protect the transformer or switchgear?
A: When a lightning strike or switching surge occurs, the ZnO (Zinc Oxide) core responds instantaneously to divert the excess energy to the ground. Once the transient event passes, it automatically restores to a high-impedance state, protecting your equipment's insulation.
Q: Are you a manufacturer or a trading company?
A: We are a professional manufacturer based in Wuhan, China, specializing in power cable accessories and lightning arresters. We welcome factory visits and third-party inspections.
Q: Do you offer OEM or private labeling services?
A: Yes, we provide comprehensive OEM services. We can customize the product branding, packaging, and technical specifications to meet your specific market requirements. Please contact us for MOQ details.
Q: What is the typical delivery time?
A: For standard models, we usually have stock or can arrange shipment within 7-10 days after payment. Custom OEM orders may take 15-20 days depending on the quantity.
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