Indoor Solid-Sealed Vacuum Load Break Switch 12kV

  • Indoor Solid-Sealed Vacuum Load Break Switch 12kV
Ключові атрибути
Бренд ROCKWILL
Номер моделі Indoor Solid-Sealed Vacuum Load Break Switch 12kV
Номінальне напруга 12kV
Номінальний струм 1250A
Номінальна частота 50/60Hz
Серія FZN
Описи продуктів від постачальника
Опис

Product Overview

The FZN Series Indoor Solid-Sealed Vacuum Load Break Switch and its combination units integrate vacuum interrupter solid-sealed poles with disconnectors, earthing switches, fuses, and spring operating mechanisms in a compact design. Engineered for 12kV, 3-phase, 50Hz AC power distribution networks, these units are ideal for both ring and radial power supply systems.
They are designed to:
  • Make, carry, and break normal rated load currents
  • Make load currents and withstand short-circuit currents for specified durations
  • Provide overload and short-circuit protection for distribution transformers and other electrical equipment (in combination unit configurations)
With a rated current of up to 1250A, the VL1 series is a pioneering solution in the domestic market, delivering enhanced performance for modern power distribution requirements.

Core Features & Benefits

  • Solid-Sealed Vacuum Interrupter Poles: Vacuum interrupters and conductive connections are encapsulated in epoxy resin via a special casting process, ensuring excellent insulation performance and adaptability to harsh, polluted environments. This design also enables the miniaturization of switchgear.
  • High Rated Current: Industry-leading 1250A rated current, providing superior capacity for modern power distribution systems.
  • Integrated Design: Combines load break switches with disconnectors, earthing switches, and fuses for comprehensive protection and switching functions.
  • Flexible Operation: Equipped with manual or motorized spring operating mechanisms, with side-mounted installation for space efficiency.
  • Compact & Lightweight: Optimized structure allows for easy integration into switchgear panels, reducing footprint and installation complexity.
  • Interoperability: Compatible with the VS2 Series Indoor Solid-Sealed Vacuum Circuit Breakers, enabling seamless assembly in the same switchgear.

Technical Specifications

Parameter
Unit
Load Break Switch
Combined Electrical Apparatus
Rated Voltage
kV
12
12
Rated Frequency
Hz
50
50
Rated Short-Time Power Frequency Withstand Voltage (1 minute)
kV
42/48
42/48
Rated Lightning Impulse Withstand Voltage (peak value)
kV
75/85
75/85
Rated Current
A
1250
200
Rated Making Current
A
 
3150
Rated Short-Time Withstand Current (2S)
kA
20
 
Rated Peak Withstand Current
kA
50
 
Rated Short-Circuit Making Current
kA
50
 
Rated Short-Circuit Breaking Current
kA
 
31.5
 
 
Applications
  • Urban and industrial power distribution systems
  • Ring main units and compact substations
  • Distribution transformer protection
  • Industrial facilities, commercial buildings, and infrastructure projects
  • Compatible with VS2 series vacuum circuit breakers in shared switchgear assemblies

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