Manufacturer of Miniature circuit breaker-FTM8-LE for Costa Rica Factory
Exterior and dimensions
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|Model||FTM8LE Residual current circuit-breaker|
|Number of poles||IP+N,2P,3P,3P+N,4P|
|Rated frequency:||AC 50/60Hz|
|Rated voltage (V) AC||230/400|
|Rated current (A)||C D||1,3,6,10,16,20,25,32,40,50,63 1,3,6,10,16,20,25,32,40,50,63|
|Rated residual operating current(mA)||30|
|Rated residual non-operating current(mA)||15|
|Residual current breaking time||30mA≦0.1s 250mA≦0.04s|
|Rated short-circuit breaking capacity(KA)||6(In≦40A); 4.5(In﹥40A)|
|Rated residual current breaking capacity(KA)||3|
|Mechanical & electrical life:||10,000 operations|
|Installation||On DIN rail 35mm according to JB6525|
|Connection capacity:||Cross-section of conductors up to 25mm2|
|Tightening torque||2 Nm|
|Ambient temperature (°C)||-5°C ~ +40°C|
|Relative air humidity||no more than 95%|
|installation condition||Used in place without obvious shock and vibration|
Exterior and dimensions
|Number of poles||Rated current|
This is the second part of the two part series. If you would like to keep up-to-date on aircraft wiring, go to http://www.lectromec.com for our free newsletter. This video explains the Lectromec software tool that facilitates compliance to the Aircraft Electronic Wire Interconnect Systems (EWIS) regulations needed to obtain FAA certification. This video details some of the reports that the EWIS Risk Assessment Tool (RAT) can provide. These include information on wire bundles, collocation, and a Failure Modes and Effects Analysis. It not only analyzes physical wire failures, but also the functional failure impact. In addition, it offers mitigation suggestions.
Below are more Lectromec videos:
EWIS – Electrical Wire Risk Assessment – Part One – 10 minutes
KEYWORD=Electrical Wire Risk Assessment
After decades in the aerospace wire testing business, Lectromec has developed a software tool that helps facilitate the EWIS certification resulting from FAA regulations. This is the first of a two part series explaining the software tool. The video particularly focuses on regulation 25.1709 and discusses the means by which the EWIS Risk Assessment Tool (EWIS RAT) is able to result in certification.
Aircraft Wire Arc Resistance Testing – 14 minutes
Lectromec has been involved in aircraft wire arc resistance testing for decades. This vintage video is originally from the late 1990s and was put together at the request of the National Transportation Safety Board. Technicians took wire insulation from a Boeing 747 and showed what can happen if subjected to liquids. A plane such as a 747 can have a wide range of liquids that can accidentally come in contact with wiring. Examples of liquids include cleaners, lavatory water, spilled beverages, and even condensation. The test in this video shows nicks in insulation and the impact of moisture. The damaged wire represents environmental aging or trauma to the aerospace electrical system.
A Brief Review of MIL-HDBK-525 – 14 minutes
In an attempt to reinforce the information provided in MIL-HDBK-525, Lectromec put together a series of articles explaining it. These articles have proven to be some of the most popular blogs Lectromec has written. If you would prefer a video “assist” in understanding the handbook, take a look at this video. It is a terrific breakdown of the seven enumerated tasks of MIL-HDBK-525, including 1. Data Analysis, 2. Maintenance Data, 3. Inspection, 4. Laboratory evaluation, 5. EWIS risk assessment, 6. Mitigation, and 7. Reassessment.
Aerospace Wire Arc Plume Filmed in High-Speed – 3 minutes
Many aerospace professionals who are involved in maintenance, repair, and operations have seen the results of aerospace wire arcing. The nearby equipment damaged during wire system failures, is normally called “collateral” damage. Seeing an aerospace wire arc plume “in the wild” is a challenging endeavor (and one most people try to avoid). It can occur so quickly that the human eye can miss it. Lectromec reenacted a wire failure and recorded it with a high-speed camera. From the perspective of an aerospace wiring engineer, this is three minutes of riveting action with ionized gas.
Aircraft Wire and Cable Developments – 33 minutes
The real title of this is “What’s hot and what’s not in aerospace wire and cable.” However, aerospace wiring engineers have an aversion to anything that is “hot,” except coffee. As a result, we have titled this video “Aerospace Wire and Cable Developments.” This video is a short summary of remarks made by Lectromec’s president Michael Traskos at a recent trade conference in China. He delves into the future for aerospace wire and cable, wire system assessment and degradation, and other topics. Also included are new aerospace wire and cable requirements, certification, and trends.
EWIS – Aircraft Wire Testing and Combat Vulnerability – 12 minutes
When it comes to aircraft wire testing, we normally think of abrasion resistance, heat shock, and other concepts that are generally considered when we look at the “airworthiness” of aerospace wires. This vintage video was recorded in the mid-1980s, and takes a look at wire survivability in a combat situation. This video shows what happens when bullets hit aerospace wiring systems and the dangers of resetting circuit breakers. It is among the first videos that were created documenting the potential hazards of electrical arcing.
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