ELECTRO

39問 • 2年前

Annaricha Mae Dalag

通報

問題一覧

An electrical wiring interconnection system (EWIS) is also known as an ______________

electrical harness

A complex system's wiring system and components, such as ________ and _________, make up an EWIS.

bundle clamps wire splices

The aviation industry originally used the term ______________________. The term was changed to EWIS to emphasize the significance of the system's wiring and the actual wires.

"Electrical Interconnect Systems" (EIS)

In the late 1990s, there were two major airline accidents that were attributed to electrical wiring failures. These accidents were ___________ and __________.

TWA Flight 800 in 1996 Swissair Flight 111 in 1998

In _______, the FAA established the __________________________ to examine the state of aging aircraft systems. ATSRAC identified EWIS as a major concern. The committee recommended that the FAA develop new regulations to improve the safety and reliability of EWIS.

1997 Aging Transport Systems Rulemaking Advisory Committee (ATSRAC)

In ___________, the FAA published new regulations for EWIS. These regulations required that all _________ and ____________ comply with the new EWIS standards. The regulations cover a wide range of topics, including: 1. 2. 3. 4.

2000 new aircraft : major modifications to existing aircraft •EWIS design •EWIS maintenance •EWIS installation •EWIS documentation

The Electrical Wiring Interconnect Systems (EWIS) requirement is mandated in U.S. Federal Aviation Regulations (FAR) ______________ as a precursor to type certification for all transport category aircraft.

Part 25, Sub part H

The EWIS is designed to be a safe, reliable, and maintainable system. The following are some of the key considerations for EWIS design:

Safety Reliability Maintainability

The EWIS must be designed to prevent electrical shock and fire hazards. This includes using properly insulated wires, connectors, and other components.

SAFETY

The EWIS must be able to withstand the rigors of normal operation, as well as extreme conditions such as temperature, vibration, and humidity

Reliability

The EWIS must be easy to inspect and repair. This includes using easy-to-access components and clear labeling.

Maintainability

There are two main types of EWIS:

Point-to-point Wiring Harness Wiring

This type of EWIS uses individual wires to connect each component to the next.

Point-to-point Wiring

This type of EWIS uses bundles of wires that are routed together. Typically used for more complex systems.

Harness Wiring

The following are some of the key components of an EWIS:

Wires Connectors Cable Clamps Wire Sleeving Grounding

are the conductors that carry electrical current. They are typically made of copper or aluminum.

Wires

are used to join wires together. They come in a variety of types, including butt connectors, crimp connectors, and solder connectors.

Connectors

are used to secure wires and harnesses to the aircraft structure.

Cable Clamps

used to protect wires from damage.

Wire Sleeving

used to protect the EWIS from electrical shock.

Grounding

are essential tools for removing the insulation from the ends of wires, exposing the conductive copper strands for connection.

Cable strippers

These strippers require manual force to remove the insulation. They are simple and inexpensive but may not provide consistent results.

Manual Strippers

These strippers use a mechanism to automatically adjust to the wire gauge and strip the insulation precisely. They are more efficient and consistent than manual strippers but may be more expensive.

Automatic Stripper

are used to create secure connections between wires and terminals. They apply pressure to deform the terminal barrel, creating a tight grip around the wire strands. Come in various sizes and styles to accommodate different wire gauges and terminal types

Crimping tools a

are specifically designed for crimping large-gauge wires and lugs. They provide the necessary force to deform the lug barrel and securely connect it to the wire.

Lug crimping tools

is a type of heat-activated plastic tubing that shrinks tightly around wires when heated, providing insulation and protection. Heat guns or heat shrink ovens are used to shrink the tubing.

Heat shrink tubing

_________ are used to identify individual wires within a harness. They come in various forms, including:

Wire markers Heat-shrinkable markers Self-laminating markers Adhesive-backed markers

These markers shrink tightly around the wire when heated, providing a permanent and durable identification.

Heat-shrinkable markers

These markers consist of two layers of plastic that wrap around the wire, providing a protective covering and clear identification.

Self-laminating markers

These markers have adhesive on one side, allowing them to be attached directly to the wire.

Adhesive-backed markers

are used to bundle and secure wires together, providing organization and protection. They come in various materials, including nylon, plastic, and stainless steel, and different lengths and widths to suit various applications.

Cable Ties

is a traditional method of bundling and securing wires using a cord or wire. It provides a flexible and secure way to manage wire harnesses in tight spaces.

Cable Lacing

are used to check the continuity and integrity of wire connections. They can identify faults, shorts, and open circuits in the harness.

Wire harness tester

are used to join two or more wires together, creating a secure and electrically conductive path. They come in various types, each with its own specific design and application.

Wire Connectors

Some common types of wire connectors include:

Butt Connectors Ring Terminals Spade/Fork Terminals

These connectors are used to join two wires of the same gauge by crimping or soldering the connector barrel onto the exposed copper strands of the wires.

Butt Connectors

These connectors have a ring- shaped terminal that can be crimped or soldered onto the end of a wire. They are often used to connect wires to terminals or other components.

Ring Terminals

These connectors have a flat, spade-shaped terminal that can be crimped or soldered onto the end of a wire.

Spade/Fork Terminals

They are often used to connect wires to circuit breakers, fuse holders, and other components with terminal blocks.

Spade/Fork Terminals

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問題一覧

An electrical wiring interconnection system (EWIS) is also known as an ______________

electrical harness

A complex system's wiring system and components, such as ________ and _________, make up an EWIS.

bundle clamps wire splices

The aviation industry originally used the term ______________________. The term was changed to EWIS to emphasize the significance of the system's wiring and the actual wires.

"Electrical Interconnect Systems" (EIS)

In the late 1990s, there were two major airline accidents that were attributed to electrical wiring failures. These accidents were ___________ and __________.

TWA Flight 800 in 1996 Swissair Flight 111 in 1998

1997 Aging Transport Systems Rulemaking Advisory Committee (ATSRAC)

2000 new aircraft : major modifications to existing aircraft •EWIS design •EWIS maintenance •EWIS installation •EWIS documentation

Part 25, Sub part H

The EWIS is designed to be a safe, reliable, and maintainable system. The following are some of the key considerations for EWIS design:

Safety Reliability Maintainability

The EWIS must be designed to prevent electrical shock and fire hazards. This includes using properly insulated wires, connectors, and other components.

SAFETY

The EWIS must be able to withstand the rigors of normal operation, as well as extreme conditions such as temperature, vibration, and humidity

Reliability

The EWIS must be easy to inspect and repair. This includes using easy-to-access components and clear labeling.

Maintainability

There are two main types of EWIS:

Point-to-point Wiring Harness Wiring

This type of EWIS uses individual wires to connect each component to the next.

Point-to-point Wiring

This type of EWIS uses bundles of wires that are routed together. Typically used for more complex systems.

Harness Wiring

The following are some of the key components of an EWIS:

Wires Connectors Cable Clamps Wire Sleeving Grounding

are the conductors that carry electrical current. They are typically made of copper or aluminum.

Wires

are used to join wires together. They come in a variety of types, including butt connectors, crimp connectors, and solder connectors.

Connectors

are used to secure wires and harnesses to the aircraft structure.

Cable Clamps

used to protect wires from damage.

Wire Sleeving

used to protect the EWIS from electrical shock.

Grounding

are essential tools for removing the insulation from the ends of wires, exposing the conductive copper strands for connection.

Cable strippers

These strippers require manual force to remove the insulation. They are simple and inexpensive but may not provide consistent results.

Manual Strippers

These strippers use a mechanism to automatically adjust to the wire gauge and strip the insulation precisely. They are more efficient and consistent than manual strippers but may be more expensive.

Automatic Stripper

Crimping tools a

are specifically designed for crimping large-gauge wires and lugs. They provide the necessary force to deform the lug barrel and securely connect it to the wire.

Lug crimping tools

is a type of heat-activated plastic tubing that shrinks tightly around wires when heated, providing insulation and protection. Heat guns or heat shrink ovens are used to shrink the tubing.

Heat shrink tubing

_________ are used to identify individual wires within a harness. They come in various forms, including:

Wire markers Heat-shrinkable markers Self-laminating markers Adhesive-backed markers

These markers shrink tightly around the wire when heated, providing a permanent and durable identification.

Heat-shrinkable markers

These markers consist of two layers of plastic that wrap around the wire, providing a protective covering and clear identification.

Self-laminating markers

These markers have adhesive on one side, allowing them to be attached directly to the wire.

Adhesive-backed markers

Cable Ties

is a traditional method of bundling and securing wires using a cord or wire. It provides a flexible and secure way to manage wire harnesses in tight spaces.

Cable Lacing

are used to check the continuity and integrity of wire connections. They can identify faults, shorts, and open circuits in the harness.

Wire harness tester

are used to join two or more wires together, creating a secure and electrically conductive path. They come in various types, each with its own specific design and application.

Wire Connectors

Some common types of wire connectors include:

Butt Connectors Ring Terminals Spade/Fork Terminals

These connectors are used to join two wires of the same gauge by crimping or soldering the connector barrel onto the exposed copper strands of the wires.

Butt Connectors

These connectors have a ring- shaped terminal that can be crimped or soldered onto the end of a wire. They are often used to connect wires to terminals or other components.

Ring Terminals

These connectors have a flat, spade-shaped terminal that can be crimped or soldered onto the end of a wire.

Spade/Fork Terminals

They are often used to connect wires to circuit breakers, fuse holders, and other components with terminal blocks.

Spade/Fork Terminals