Panel Wiring

Cable types

Thermoplastic and Thermosetting cable what is the difference

While thermoplastic materials have the advantage of being able to be reformed, thermosetting materials are generally more heat resistance and have greater strength. The operating temperature of any cable is an important parameter in determining the maximum allowable current.

TRI-RATED CABLE - H05V2-K / H07V2-K / BS6231 

Application Range

High temperature, flame retardant cable designed for use in the switch control, relay and instrumentation panels of power switchgear and for purposes such as internal connectors in rectifier equipment, motor starters and controllers. Tri-rated cable is sometimes referred to as BS 6231 cable, H07V2-K or panel wire.

Product Features

• Oil resistant
• Flame Retardant – IEC 60332-1

Design

• Fine Wire Strands Class 5 BS EN 60228 (Previously BS 6360)
• PVC insulation TI3 according to BS EN 50363

Packaging

• Sections from 0.5mm up to 16mm - 100 meter cardboard reels
• Sections from 25mm up to 300mm - Any Lengths available

Ribbon Cable and Shaped SWA (Steel Wire Armour) 

  

Drain wire vs Shield

A shield will reflect some energy, conduct some energy to ground, and pass some energy. There are two types of shielding typically used for cables: foil and braid. ... Usually, rather than attempting to ground the entire shield, the drain wire is used to terminate and ground the shield.

                                    

SY Cable

                                       

Thermoplastic

Polyvinyl chloride (colloquial: polyvinyl, vinyl; abbreviated: PVC) is the world's third-most widely produced synthetic plastic polymer (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year. PVC comes in two basic forms: rigid (sometimes abbreviated as RPVC) and flexible.

Thermosetting

Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links. It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, and insulation for high tension (high voltage) electrical cables.

PVC vs XLPE for insulating cable: What's the difference? ... This is because PVC has a maximum working temperature of 70°C which is exactly what is needed for standing building cables, whilst XLPE has a maximum working temperature of 90°C. Cables that are insulated with XLPE can run a higher current in the conductors.

Control Diagram from BS7671 Page 122

Difference between relay and contactor

Relay

Relay

Contractors

Terminations and connections

Crimp terminals, piggyback and dual crimp terminals

Cable support for Panels

Slotted Trunking and Spiral wrap

Lacing Cord and Flexible Conduits (Metal and Plastic)

Electrical steel conduit and trunking

Electrical steel trunking

  

Steel Tray Ladder and Basket

     

     

Basket

     

Fixing and fastenings, Ties and i-dents

     

Snap on wire markers

                       

Hand held Printers 

                           

Programmable controllers

A programmable logic controller (PLC) or programmable controller is an industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability, ease of programming and process fault diagnosis ...

    

What are programmable encorers

The latest programmable encoders offer both incremental and absolute functionality on one hardware platform and can be programmed with a WiFi connection. ... For instance, a traditional programmable encoder can allow users to program basic encoder parameters such as the resolution or the electronic interface level

  

Proportional–integral–derivative controller (PID controller or three-term controller)

https://en.wikipedia.org/wiki/PID_controller

Pid controller block diagrams

Remote Start Stop Devices 

A Start push button (Green) is NO (Normally open) and wired in parallel with other remote NO, Start buttons then connected in series with NC ( Normally Closed) Stop (Red) push buttons. Start buttons when pressed close the control circuit and activate the retaining contact via the control solenoid coil, Stop buttons open the control circuit and deenergise the solenoid coil

ISOLATORS

Interlocks and Safety switches