11KV Vacuum Interrupter For Ring Main Unit

Model: TD314J

Sunway Hanguang, a professional manufacturer with over fifty years of experience in the electrical field, offers the 11KV Vacuum Interrupter for Ring Main Units, a core arc extinguishing unit specifically designed for medium-voltage ring main units. The core models include VI-RMU-11/630-25 and VI-RMU-11/1250-31.5, compatible with 50/60Hz AC systems. With stringent vacuum control and superior performance, this product specifically addresses the core needs of ring main units. As a reliable China supplier, the company leverages high-end equipment and full-process quality control to create products that meet international and domestic standards, with over 400,000 units installed globally and recognized by globally renowned companies.

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Product Description

The 11KV Vacuum Interrupter for Ring Main Units is a core arc extinguishing unit customized by Sunway Hanguang for medium-voltage ring main units. The core models are compatible with 50/60Hz AC systems, with vacuum controlled to ≤1.33×10⁻³Pa, achieving arc-free interruption and zero re-ignition, supporting the safe operation of medium-voltage power distribution networks.

As a professional product factory, Sunway Hanguang utilizes automated production lines built with equipment such as German Leybold vacuum furnaces, holds over 30 core patents, and has passed numerous international and domestic tests and system certifications. This 11KV Vacuum Interrupter for Ring Main Units meets the E2 level reclosing electrical life requirements, serves over 60 countries worldwide, and has accumulated mature experience in complex working conditions.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Rated Frequency	50/60Hz
Rated Maximum Line to Line Voltage	12kV,r.m.s
Rated Power Frequency Withstand Voltage:Air	42kV,r.m.s
Rated Impulse Withstand Voltage:Air	95kV,Peak
Rated Normal Current	630A
Rated Short-Circuit Current(3Phase Symmetrical Basis)	16kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current	50%
Rated Short-Circuit Making Current	40kA,Peak
Rated Duration of Short Time Current	4s
Rated Short-Time Withstand Current	16kA,r.m.s
Rated Peak Withstand Current	40kA,r.m.s
Maximum Contact Resistance at Minimum Closing Force	20Micro ohms
Rated Breaking Current of Single Capacitor Bank	630A,r.m.s
Rated Breaking Current of Back-to-Back Capacitor Bank	400A,r.m.s
Rated operating sequence	o-0.3s-co-180s-co
MECHANICAL DATA
Interrupter Weight(Approx.)	1.53kg
Moving Part Weight(Approx.)	0.49kg
Closing Force due to Bellow and Atmospheric	80±40N
Force Required to Hold Contacts open at Full Stroke	120±50N
MECHANICAL REQUIREMENTS(REF. VCB)
Contact Stroke	9±1 mm
Opening Speed(average of 75 contact gap)	1.1±0.2m/Sec
Maximum Overtravel During Opening	2mm
Maximun Rebound During Opening	2mm
Closing Speed(average of last 30% contact gap)	0.6±0.2m/Sec
Maximum Contact Bounse Duration(with maximum 2 bounces)	≤2ms
Rated Contact Compressive Force	1600±200N
LIFE (ESTIMATED)
Electrical Life at Rated Normal Current	50,000Operations
Electrical Life at Rated Short Circuit Current	100Operations
Mechanical Life	50,000Operations
Contact Erosion Limit	3mm
Shelf Life	20Years
Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008. Rated Characteristics to be given on request

Product Features and Advantages

The product closely matches the operating requirements of ring main units, with outstanding core advantages: It uses high-purity Cu-Cr alloy contacts with a current limiting value of <3A, ensuring stable breaking performance; it features imported bellows for strict sealing control, achieving a mechanical and electrical life of 50,000 cycles and 30 years of maintenance-free operation; the high-strength ceramic shell provides excellent insulation, suitable for wide temperature ranges and high altitudes; it undergoes 12 comprehensive factory inspections, features QR code traceability, and has a modular design for easy replacement, with a global technical center providing 7×24 hour support.

Product Applications

The 11KV Vacuum Interrupter for Ring Main Units has a wide range of applications, including urban power distribution networks, industrial parks, data centers, wind and solar power substations, and other scenarios requiring high power supply reliability. It is also suitable for rail transit and offshore platform microgrids.

This product is free of SF₆ gas emissions, complying with environmental regulations and suitable for overseas projects under the "Belt and Road Initiative." As a core export product of Sunway Hanguang, its stable performance has made it a preferred supplier product in many parts of the world. This 11KV Vacuum Interrupter for Ring Main Units helps build a green and intelligent medium-voltage power distribution network.

Frequently Asked Questions

1. Customization Services: Supports multiple standards, provides OEM/ODM services, and conventional models are shipped within 5-10 days. Compatible with mainstream ring main unit equipment.

2. Quality Assurance: Core components are carefully selected from well-known brands, with full-process quality control. Each unit comes with a test report and a traceable QR code.

3. Warranty and After-Sales Service: 10-year limited warranty, guaranteeing that vacuum decay does not exceed 20% of the initial value. Global technical and maintenance support is provided.

4. Installation Notes: Requires moisture-proof and shock-proof transportation. Installation must comply with relevant requirements. It is recommended to complete voltage withstand and mechanical characteristics tests after installation.

11KV Vacuum Interrupter For Ring Main Unit