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ホーム 高電圧部品 真空遮断器 ZN85-40.5 Indoor Vacuum Circuit Breaker
ZN85-40.5 Indoor Vacuum Circuit Breaker
ZN85-40.5 Indoor Vacuum Circuit Breaker

ZN85-40.5 Indoor Vacuum Circuit Breaker

モデル
OEMおよびODMサービス: 利用可能
エンクロージャー PINEELEスタンダード
ブランド PINEELE、ZHENGXI傘下のブランド
フォーム オールパッケージタイプ
適用範囲: 産業用配電、電圧安定化、変圧器保護に最適。商業ビル、製造工場、ユーティリティ変電所で広く使用されています。
レビュー 鄭智,PINEELEのシニア電気エンジニア
18年以上のHVスイッチギア設計・試験経験。
掲載日 4月 6, 2025
最終更新日 4月 6, 2025
Phone 電子メール WhatsApp
Table of Contents
  • Key Features of ZN85-40.5 Vacuum Circuit Breaker
  • Environmental and Operating Conditions
  • Applications
  • Technical Parameters of ZN85-40.5 Vacuum Circuit Breaker
  • Mounting & Dimensions (Solid-Seal Type & Insulating Cylinder Type)
  • Actuator and Operation Mechanism

TheZN85-40.5 IndoorVacuum Circuit Breaker guideis a state-of-the-art medium voltage (MV) power protection device designed for three-phase AC 50Hz, 40.5kV power systems. As a key component in modern substations, power plants, and industrial environments, thisvacuum circuit breakerdelivers high-performance switching capability for load current, overload current, and fault current scenarios. Its compact structure, outstanding electrical and mechanical properties, and long service life make it a preferred solution for reliable, frequent operations under harsh conditions.


Key Features of ZN85-40.5 Vacuum Circuit Breaker

  • Advanced Arc-Extinguishing Design: The arc extinguishing chambers are independently housed in epoxy resin insulated cylinders, ensuring excellent electrical insulation, minimized creepage, and reduced product volume. Each phase is individually insulated, which enhances safety and overall reliability.
  • Compact and User-Friendly Layout: The vacuum interrupters, drive mechanisms, and primary conductor systems are vertically arranged in an upper-lower configuration, which reduces the device’s depth and makes it suitable for modern compact switchgear cabinets.
  • Maintenance-Free Solid-Sealed Pole: The insulating cylinder integrates vacuum interrupters and current path components into one solid-sealed structure. This design allows for long-term operation without the need for routine maintenance.
  • Flexible Installation: The breaker is available in both fixed and withdrawable configurations, suitable for XGN-40.5, KYN61 switchgear, and compact box-type substations.
  • Compliant with Standards: Fully compliant withIEC 62271-100, ensuring reliable performance in medium voltage switching applications globally.
ZN85-40.5 Indoor Vacuum Circuit Breaker structure and dimensions overview

Environmental and Operating Conditions

TheZN85-40.5 Vacuum Circuit Breakeris designed to operate reliably in diverse environments:

  • Ambient Temperature: -10°C to +40°C
  • Altitude: ≤1500 meters
  • Relative Humidity: ≤95% (daily), ≤90% (monthly)
  • Earthquake Resistance: Up to 8 degrees
  • Free from flammable gases, severe pollution, chemical corrosion, and vibrations

Applications

Thisvacuum circuit breakeris ideal for:

  • Power plants and substations
  • Industrial and mining operations
  • Medium voltage switchgear (fixed or drawout type)
  • Systems requiring frequent switching and high short-circuit breaking capacity

Technical Parameters of ZN85-40.5 Vacuum Circuit Breaker

Electrical Parameters

ItemUnitValue
Rated VoltagekV40.5
Rated FrequencyHz50
Rated CurrentA630, 1250, 1600, 2000, 2500
Short-Circuit Breaking CurrentkA25, 31.5
Short-Time Withstand Current (RMS)kA25, 31.5
Peak Withstand CurrentkA63, 80
Short-Circuit Closing CurrentkA63, 80
Capacitor Bank Breaking Current (Single/Back-to-Back)A600 / 400
Short-Circuit Current Durations4
Short-Circuit Breaking TimesTimes20
Operating Sequence–O-0.3s-CO-180s-CO
Main Circuit ResistanceμΩ≤65
Operating VoltageV (AC/DC)220 / 110
Mechanical LifeTimes≥10,000

Mechanical Parameters

ItemUnitValue
Open Contact Gapmm18 ± 1
Overtravelmm5 ± 1
Contact Bounce Timems≤3
Phase Synchronismms≤2
Average Opening Speedm/s1.7 ± 0.2
Average Closing Speedm/s0.75 ± 0.2
Opening Timems≤90
Closing Timems≤60
Wear Limit (Contact)mm3

Mounting & Dimensions (Solid-Seal Type & Insulating Cylinder Type)

Rated Current (A)Breaking Current (kA)Static Contact Size (mm)Plum-Blossom Contact Type
63020/25/31.5Φ35CT-30
125031.5Φ49CT-30
160031.5Φ55CT-36
200031.5Φ79CT-48
250031.5Φ109CT-64

Actuator and Operation Mechanism

  • Uses the3AV3 spring operating mechanismknown for its maturity and reliability.
  • Simple design with output curves optimized for the 40.5kV vacuum interrupter’s characteristics.
  • Mechanism supports both manual and automatic energy storage, enabling local or remote operation.

TheZN85-40.5 Vacuum Circuit Breakeris a cutting-edge, indoor high-voltage switching device designed for safe and efficient operation in demanding environments. Its compact structure, superior insulation, and mechanical reliability make it an ideal solution for 40.5kV medium voltage systems requiring high short-circuit performance and frequent operation. With a maintenance-free design and strong compliance with international standards, the ZN85-40.5 stands out as a trusted choice in modern power infrastructure.

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