Ordinary Discount Miniature circuit breaker-FTB3 to Kyrgyzstan Factories
Overview:
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Product illustration:
Product Features
- A breaking capacity of 12kA up to 32A and 10kA between 40 to 63A.
- Current-limiting scheme: in the event of a short circuit, are able to limit the let-through current to 60%-70% of the rated current.
- The trip mechanism ensures perfect closure every time,thereby considerably improving the performance of these devices and extending their average lifetime.
-The arc extinguishing system: allows the short-circuit currents of very high value to be interrupted extremely rapidly, the remarkable opening speed of contacts opening and the structure of the arcing chamber contribute to extinguishing the arc in the shortest possible time, ensuring reliable protection of short-circuit.
- The internal contact position allows an exact information of the circuit-breaker status: “green”,open contacts;“red”,closed contacts,independently of the toggle position.
- Sealing/locking sealable with 1 mm wire, to prevent unwanted tripping.
- The supply lines of the protected circuit can be connected to either the upper or lower terminals of the circuit-breakers(reversibility of connections).
- The double terminal of these circuit-breakers enables simultaneous connection of cables and busbars.
Technical Data
| Breaking capacity(KA) | 40-63A | 10 | |
| 6-32A | 12 | ||
| Mechanical and electrical life: | 20,000 operation | ||
| Protection rating | IP20 | ||
| Installation | On symmetrical DIN rail 35mm /Panel Mounting | ||
| Connection capacity: | Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm², reversibility of connections | ||
| Ambient temperature (°C) | -5°C ~ +40°C | ||
| Altitude (m) | not higher than 2000m | ||
| Relative air humidity | no more than 95% | ||
| Pollution degree | Ⅱ | ||
| Weight (g) | 116 | 234 352 472 | |
Tripping characteristic
Exterior and dimensions
Unit(mm)
|
Number of poles |
1P | 2P | 3P | 4P |
| a | 80±0.8 | |||
| b | 74.2±0.8 | 75.7±0.8 | ||
| c | 17.8±0.5 | 35.6±0.8 | 53.4±0.8 | 71.2±0.8 |
| d | 44±0.8 | |||
| e | 68.7±0.8 | 70.2±0.8 | ||
| f | 45±0.8 | |||
| g | 35.5±0.8 | |||
Wiring
Please refer to below table for the connection of wires with a cross section area
| Rated current In(A) | Nominal cross section area of copper wire(mm²) |
| 1～6 | 1 |
| 10 | 1.5 |
| 16,20 | 2.5 |
| 25 | 4 |
| 32 | 6 |
| 40,50 | 10 |
| 63 16 | |
In this video i teardown a NAC HSV-400 high speed colour video camera from the late 1980s.
The NAC HSV is range of camera systems was introduced in 1987 by NAC they record their footage onto video tape. In the original HSV-400 camera it used three Plumbicon (Vidicon) picture tubes arranged around a dichroic prism along with a 10,000/sec mechanical shutter.
In later models (HSV-500 onwards) NAC switched to solid state CMOS imaging but retained the video tape recording system until the HSV-1000 which ended the line. The Memrecam range replaced the HSV line of cameras.
https://en.wikipedia.org/wiki/Video_camera_tube
https://en.wikipedia.org/wiki/High-speed_camera
https://en.wikipedia.org/wiki/Dichroic_prism
http://www.nacinc.com/products/
http://dexterslab2013.blogspot.co.uk/
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Email address can be found on my YouTube Channel About page.
