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Accueil Composants haute tension Disjoncteur à vide 11kv vacuum circuit breaker
11kv vacuum circuit breaker
11kv vacuum circuit breaker
11kv vacuum circuit breaker
11kv vacuum circuit breaker
11kv vacuum circuit breaker
11kv vacuum circuit breaker

11kv vacuum circuit breaker

Model: 11kv
OEM and ODM Services: Available
Enclosure: PINEELE standard
Brand: PINEELE, a Brand Under ZHENGXI
Form: All- packaged Type
Scope of Application: Suitable for industrial power distribution, voltage stabilization, and transformer protection. Widely used in commercial buildings, manufacturing plants, and utility substations.
Reviewed By: Zheng Ji,Senior Electrical Engineer at PINEELE
18+ years of experience in HV switchgear design & testing.
Published On: mai 8, 2025
Last Updated: mai 8, 2025
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Table of Contents
  • What is an 11kV Vacuum Circuit Breaker?
  • Application Areas of 11kV VCBs
  • Industry Trends and Technological Landscape
  • Key Technical Specifications
  • Comparison: VCB vs Other Technologies
  • Selection Guidelines: Choosing the Right 11kV VCB
  • Why Choose Vacuum Technology?
  • Trusted Industry Sources
  • Frequently Asked Questions (FAQ)
Industrial 11kV vacuum circuit breaker with enclosure in a substation environment

What is an 11kVDisjoncteur à vide?

An11kV vacuum circuit breaker (VCB)is a type of electrical switchgear designed formedium voltage (MV)applications, primarily operating at 11,000 volts. It uses a vacuum as the arc-extinguishing medium, which allows it to interrupt high fault currents with exceptional reliability and minimal maintenance. The vacuum offers superior dielectric strength, ensuringrapid arc quenching, reduced contact erosion, and long service life.

Unlike traditional air or oil circuit breakers, vacuum circuit breakers encapsulate contacts in a vacuum interrupter. When the breaker trips, the arc is formed inside this vacuum, where it is swiftly extinguished due to the lack of ionized particles.

Application Areas of 11kV VCBs

11kV vacuum circuit breakersare widely used in various industries and sectors that require robust and safe power control solutions:

  • Electrical distribution systemsin utilities and substations
  • Industrial plantsfor motor control and heavy machinery protection
  • Commercial buildings, such as hospitals and data centers
  • Renewable energy farms, including wind and solar installations
  • Railway electrificationand metro systems

These breakers are especially valued forindoor switchgear panelsandcompact substations, where space, safety, and maintenance-free operation are crucial.

Industry Trends and Technological Landscape

According to a report byResearchAndMarkets, the global circuit breaker market is expected to grow at a CAGR of6.2% from 2024 to 2030, with vacuum technology holding a significant share due to its clean operation and longer service intervals. IEEE has also emphasized the growing role of vacuum interrupters insmart gridapplications due to their rapid response time and integration capability with digital protection relays.

Additionally, regulatory bodies like theIEEMAandIEChave laid down strict compliance norms for MV switchgear, making vacuum-based solutions more favorable due to their environmental safety and reliability.

Key Technical Specifications

Here is a typical technical specification sheet for a standard indoor 11kV vacuum circuit breaker:

ParameterValue
Tension nominale11kV
Courant nominal630A / 1250A / 1600A
Fréquence nominale50Hz / 60Hz
Short-Time Withstand Current16kA / 25kA / 31.5kA (1 sec)
Rated Breaking CapacityUp to 31.5kA
Insulation Level28kV (1 min power frequency), 75kV (impulse)
Operating MechanismSpring-charged / Motor-charged
Mechanical Life>10,000 operations
Interrupter TypeVacuum
InstallationFixed / Withdrawable type
Standard ComplianceIEC 62271-100, IS 13118, ANSI C37
Technical diagram of a typical 11kV vacuum circuit breaker panel

Comparison: VCB vs Other Technologies

FeatureDisjoncteur à videSF₆ Circuit BreakerOil Circuit Breaker
Arc Extinguishing MediumVacuumSF₆ GasMineral Oil
Environmental ImpactZero emissionsGreenhouse gasFire hazard
Maintenance RequirementsMinimalModerateHigh
Installation TypeCompact/IndoorBulkierRequires oil tanks
Common Applications11kV to 36kV systems66kV and aboveOutdated, legacy

Vacuum breakers are now considered the standard for11kV systems, replacing oil and air-based alternatives in most modern designs.

Selection Guidelines: Choosing the Right 11kV VCB

When selecting an 11kV vacuum circuit breaker, consider the following:

  • Current Rating: Match the load profile of your facility.
  • Breaking Capacity: Ensure it’s rated for the maximum expected fault current.
  • Interlock and Safety Features: Look for arc chute covers, mechanical trip indicators, and remote operation.
  • Installation Constraints: Fixed or withdrawable type, panel-mounted or freestanding.
  • Compliance Standards: Ensure IEC/ANSI certification for safety and interoperability.

Pro Tip: Always consult with qualified engineers and ensure that the breaker coordinates properly with upstream and downstream protection systems.

Why Choose Vacuum Technology?

Vacuum circuit breakers offer several critical advantages:

  • Environmentally Safe: No SF₆ emissions or oil leaks.
  • Long Life: Up to 20 years with little to no maintenance.
  • Fast Interruption Time: Less than 2–3 cycles.
  • Compact Design: Ideal for indoor panels and containerized substations.
Compact switchgear room with installed 11kV vacuum circuit breakers

Trusted Industry Sources

The information in this article draws from multiple authoritative references, including:

  • IEEE Switchgear Standards
  • Wikipedia – Vacuum Circuit Breaker
  • ABB VCB Product Guides
  • IEEMA Guidelines
  • Schneider Electric Tech Library

Citing these helps establishEEAT (Expertise, Authoritativeness, and Trustworthiness)as recommended by Google Search Quality Guidelines.

Frequently Asked Questions (FAQ)

Q1: How often should an 11kV vacuum circuit breaker be serviced?

A1:Typically, a VCB rated for 11kV may require inspection every 5–10 years depending on operating conditions. Most units exceed 10,000 mechanical operations without major service.

Q2: Is vacuum circuit breaker safe for indoor installations?

A2:Yes. In fact, vacuum circuit breakers are the preferred solution for indoor switchgear because they are compact, clean, and arc-safe.

Q3: Can I replace an oil circuit breaker with a vacuum breaker?

A3:Yes. In most cases, with proper retrofitting or panel replacement, you can upgrade to vacuum technology for improved safety and performance.

The11kV vacuum circuit breakeris a benchmark in medium voltage electrical protection. Its combination ofefficiency, safety, and environmental responsibilitymakes it ideal for modern industrial and utility networks. Whether you are upgrading legacy systems or planning a new installation, choosing a high-quality VCB ensures dependable performance with minimal intervention for years to come.

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