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Main Technical Data
| Main Technical Data | |
| Rated Voltage | 12kV |
| Rated Current | 630/1250A |
| Rated Frequency | 50Hz |
| Rated Short-time power frequency withstand voltage(1min) | 42kV |
| Rated Lighting impulse withstand voltage | 75kv |
| Rated short-circuit breaking current | 20/25KA |
| Rated short-circuit making current(peak) | 50/63kA |
| Breaking operations of rated short circuit breaking current | 30 timies |
| Rated sigle capacitor bank breaking current | 400A |
| Rated short-time withstand current | 20/25kA |
| Rated peak withstand current | 50/63kA |
| Rated duration of short-circuit | 4s |
| Mechanica life | 20000times |
| Contact closing force due to bellows and atmosphere | 80±40N |
| Counterforce at rated contact stroke | 120±50N |
| Circuit resistance at rated contact force | ≤25μΩ |
| Shelf life | 20 years |
| Contact erosion limit | 3mm |
| Weight of moving parts | ≤1.3kg |
| Mechanical Data Required for matched vacuum switchgear | |
| Rated contact stroke | 10±1mm |
| Average opening speed | 1.0±0.25m/s |
| Average closing speed | 0.65±0.15m/s |
| Added contact force | 2000±100N |
| Contact bouncing duration at closing operation | ≤2ms |
| Contact bouncing bank amplitude of opening operation | ≤2mm |
| Three-pole simultaneity | ≤1ms |
Dimensional Drawing
Bluetooth hat headphones are a combination of fashion and technology, so you can listen to music without wearing extra headphones. Bluetooth Stereo Headphones bring you sound quality, style and comfort.The latest Blutooth V5.0 technology: Easily and quickly work with mobile phones, tablets and other Bluetooth music devices, with a wireless range up to 33 feet. To answer and hang up calls, you can operate directly on your hat without using your phone. Built-in rechargeable lithium-ion battery, about 6 hours of call/play time, 2.5 hours of charging time, 60 hours of standby time, so you have less charging time and more working time. The hat can be completely washed after taking off the headphones.
Wireless Bluetooth Headset,Bluetooth Earphone,Bluetooth Hat Headphones,Winter Hat With Bluetooth Headphones
Shenzhen Linx Technology Co., Ltd. , https://www.linxheadphone.com