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Electrical and Instrument Wiring Terminals

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Jump to Subject:- Electrical and Instrument Wiring Terminals Technical Data | Termination and Electrical Connection Tools | Other Electrical and Instrument Terminal Links

Electrical and Instrument Wiring Terminals Technical Data

It is important that terminating and making off terminals is undertaken by fully competent electrical tradesmen. Quality crimping tools, terminals and accessories should be used.

Cable Termination Practices Simplified - Proper cable termination practices are vital for the complete and accurate transfer of both analog and digital information signals. This useful article from EC&M covers this.

Cable Termination Techniques - There are a variety of termination methods for cable. The termination method utilized depends basically on the system installed, type of cable used and type of connector. Using the proper termination method allows for good mechanical and electrical integrity. No matter what type of termination you will be performing, the most important thing is to use the proper tools and materials for the type of termination. For example, a crimp using pliers will work, but using a crimp tool and the proper die designed for your type of cable and connector is better. Using the proper solder type and the right temperature for solder type connections will ensure a lasting connection. We will review four basic termination techniques. This is just to provide some general guidelines. The termination method may vary somewhat based on system requirements and connector manufacture design methods. From West Penn Wire http://www.westpenn-cdt.com

Connector Termination/Basic Guidelines - There are a variety of termination methods for cables. The termination method utilized depends basically on the system installed, type of cable used, and type of connector. Using the proper termination method allows for good mechanical and electrical integrity. No matter what type of termination you will be performing, the most important thing to remember is to use the proper tools and materials for your type of termination. For example, a crimp using pliers will work, but using a crimp tool and the proper die designed for your type of cable and connector is better. Using the proper solder type and the right temperature for solder type connections will ensure a lasting connection. This paper will review some basic termination techniques and provides some general guidelines. The termination method may vary somewhat based on system requirements and connector manufacturer design methods.From West Penn Wire http://www.westpenn-cdt.com

Basic Electrical Training Course - This excellent 14 page pdf from Deutsch Advanced Interconnect is focused on the technology around connectors. This article is not an attempt at a basic course in electronics - rather, it is a course that will help you understand the electrical requirements that pertain to connectors. It’s pretty basic stuff - we promise not to get much heavier than Ohm’s Law and a few buzzwords. You’ll also be introduced to wire and cable so you’ll have a better understanding about connector applications.

Corrosion Resistance of Electric Wire Terminals Used in Harsh Industrial Environments - Industry reports indicate that 50 to 60 percent of electrical downtime has been traced to open or intermittent connections.1 Harsh industrial environments increase the risk of corrosion and chemical attack on metals used in wire terminal connections, potentially affecting electrical reliability. Engineers designing industrial control products must apply sound judgment in material selection and wire clamp design along with rigorous test methods to ensure reliable long term performance under harsh field conditions. Accelerated corrosion testing is an important tool for use in product designs such as wire terminal systems. Test methods such as salt spray testing have traditionally been used to evaluate corrosion resistance but can seldom be correlated to actual field performance. Other methods using corrosive gas mixtures have been developed to better correlate with field conditions. This paper studies corrosion resistance of wire terminal connections made from a variety of materials and protective platings and coatings. Accelerated test methods using both salt spray and corrosive gas mixtures were applied. The results show that each base metal and protective coating has it's strengths and weaknesses. Steel with zinc-trivalent chromate protective coatings performed well but vary significantly depending on the thickness of zinc, type of chromate, and use of sealers. Nickel-plated brass performed well except in environments with high concentrations of ammonia. Stainless steel provided the best and most universal corrosion resistance. The information presented in this paper can be applied to make more knowledgeable product selection decisions that will help ensure long term reliability of electrical connections used in industrial control applications - From Rockwell.

A Systems Approach to Functional Terminal Block Design - Consider where signals are processed in measurement, conversion and regulation systems - Carsten Luckheide - Ideally, functional terminal blocks should be easy to use, provide secure connections and make it simple to bridge terminals, whether or not they are adjacent. By taking a systems approach to functional terminal block design, though, a single block can be adapted to different connection requirements - from plantservices.com

Wire & Cable Termination Options - How to complete your electrical assembly - Whether it’s a Wire Harness or a Cable Assembly, find the best way to terminate the ends. This is a quick reference chart of common termination options to help decide which is best  - from DSM&T.

Connection Tips - From the Friendship Sloop Society ( Not industrial tips but pretty relevant anyway).

U Tube Videos

Proper Wiring Termination - Tips, Tools and Methods

The following Technical Data is from  Weidmüller Pty Ltd

U Tube Videos - There are a useful series of videos on U Tube giving examples of how to connect using Weidmüller terminal blocks and accessories.
Screw Type Terminal Blocks W-Series
Tension Type Terminal Blocks Z-Series
IDC Type Terminal Blocks I-Series
Push-In Type Terminal Blocks P-Series
Weidmüller FieldPower Solution - Animation of  Weidmüller FieldPower Solution for Power Distribution along conveyor belts
Weidmuller Connection Technology W series Clamping Yoke – This video details the mechanics of the clamping yoke – it is pretty “cool”.
Weidmuller Connection Technology Z series Tension Clamp - This video details the mechanics of the Tension Clamp.
Weidmuller Connection Technology P series Push In - This video details the mechanics of the Push in Technology.

Technical Appendix - Includes Connection systems, Definitions of the various types, Materials – Insulating materials,  Materials – Metals,  Standards, directives, terminology, General technical information, Electrical data, Installation instructions,  ATEX Modular terminals for explosive conditions, ATEX directives, codes and cross-connection instructions.

The following links are from Entrelec ;

Termination and Electrical Connection Tools

The following Technical Data is from  Weidmüller Pty Ltd

Technical Dictionary - This excellent 44 page document includes Certificates, Electrical data including clearance and creepage distances, and Current load curve. It also covers;
General Technical Data - including information about CE marking, EMV directives, Protection types, Converting AWG conductors to mm2, Gauge pin, 
Materials -
including Insulation materials, Metals, Current loading curves, 
Connection types
ATEX
Terminals -
including Regulations / definitions, Assembling terminal strips, Connecting terminals, Use of aluminium conductors, Definition of the various types, Ex terminals.
Relay couplers/Opto-couplers
Overvoltage Protection
Tools
- Cutting, Stripping, Crimping

Hazardous Areas Technical Guide- This excellent 90 page technical guide from Weidmüller is a large pdf  download at 7 Megs, however it is worth the wait!

Applications in the Oil and Gas Industry - This application bulletin illustrates the practical concepts and special features  in both the upstream and downstream sectors of the oil and gas industries.


Other Electrical and Instrument Terminal Links

XB IEC Terminal Blocks— versatility, quality, and reliability – This brochure details the different designs utilised by the Eaton range of terminals.

Video - XB Terminal Blocks - Details the features of this range of terminal blocks - from Eaton.