Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FZN64-12 Vacuum Load Break Switch: 12kV 630A HV LBS, FZRN64 fuse combination, 31.5kA breaking, 50kA closing, epoxy insulation, visible break, five-prevention interlock, 1250kVA transformer.
Advanced FZN64/FZRN64 Vacuum Load Break Switch Series: Premium FZN64-12D high-voltage vacuum load switch functioning between high voltage circuit breaker and isolation switch, designed for controlling power transformers in 12kV 50Hz systems, featuring vacuum bubble installed in epoxy resin insulation cylinder for stable insulation performance, delivering 630A rated current with obvious visible breaking points and high breaking capacity, incorporating isolation knife mechanically interlocked with load switch and cabinet door, novel cabinet door lock interlock mechanism automatically meeting “five-prevention” requirements, FZRN64-12D model providing 31.5kA rated short-circuit breaking current with SDLAJ-12/SFLAJ-12 fuse types and 2000A rated transfer current.
Transformer Protection Ready: FZN64-12 delivers 50kA rated short-circuit closing current, 50kA rated dynamic stability current (peak), 20kA (4s) heat stabilized current, 1250kVA no-load transformer breaking capacity, 10A cable charging breaking, featuring 42kV power frequency withstand (ground/phase), 75kV lightning impulse, 10000 mechanical life cycles, providing reliable high voltage vacuum load break switching solution for power transformer control requiring fuse series protection with proven five-prevention interlock performance.
| FZN64-12 Vacuum Load Break Switch Specifications | FZN64-12D | FZRN64-12D | Unit |
|---|---|---|---|
| Model Number | FZN64-12D | FZRN64-12D | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | High Voltage Vacuum Load Switch | High Voltage Vacuum Load Switch-Fuse Combination | – |
| Function | Between Circuit Breaker and Isolation Switch | Between Circuit Breaker and Isolation Switch + Fuse | – |
| Rated Voltage | 12 | 12 | kV |
| Rated Frequency | 50 | 50 | Hz |
| Rated Current | 630 | 125 | A |
| Rated Insulation Level – Arc Chamber Fracture | 30 | 30 | kV |
| Power Frequency Withstand (Ground/Phase) | 42 | 42 | kV |
| Power Frequency Withstand (Isolation Fracture) | 48 | 48 | kV |
| Lightning Impulse Withstand (Ground/Phase) | 75 | 75 | kV |
| Lightning Impulse Withstand (Isolation Fracture) | 85 | 85 | kV |
| Rated Dynamic Stability Current (Peak) | 50 | – | kA |
| 4s Heat Stabilized Current | 20 | – | kA |
| Rated Active Load Breaking Current | 630 | 125 | A |
| Rated Closed-Loop Breaking Current | 630 | 125 | A |
| Rated Cable Charging Breaking Current | 10 | 10 | A |
| No-Load Transformer Breaking Capacity | 1250 | 1250 | kVA |
| Rated Short-Circuit Breaking Current | – | 31.5 | kA |
| Rated Transfer Current | – | 2000 | A |
| Fuse Type | – | SDLAJ-12 / SFLAJ-12 | – |
| Impactor Output Energy | – | 2-5 (Medium) | J |
| Rated Short-Circuit Closing Current | 50 | 50 | kA |
| Ground Switch Rated Dynamic Stable Current | 50 | 50 | kA |
| Ground Switch 2s Thermal Stability Current | 20 | 20 | kA |
| Auxiliary Circuit Rated Voltage | AC/DC: 220/110 | AC/DC: 220/110 | V |
| Mechanical Life | 10000 | 10000 | cycles |
| Insulation Structure | Vacuum Bubble in Epoxy Resin Insulation Cylinder | Vacuum Bubble in Epoxy Resin Insulation Cylinder | – |
| Breaking Point | Visible Breaking Points | Visible Breaking Points | – |
| Interlock Feature | Isolation Knife + Load Switch + Cabinet Door Mechanical Interlock | Isolation Knife + Load Switch + Cabinet Door Mechanical Interlock | – |
| Five-Prevention | Novel Cabinet Door Lock Interlock – Automatic Five-Prevention | Novel Cabinet Door Lock Interlock – Automatic Five-Prevention | – |
| Application | Power Transformer Control | Power Transformer Control with Fuse Protection | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
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Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
