4 Factors To Consider When Selecting a Sectionalizer
Sectionalizers are (beside overcurrent relays, reclosers and fuses) one of the most used for distribution system protection. A sectionalizer is a device that automatically isolates faulted sections of a distribution… Read more
Sep 16, 2015 | Energy and Power
SF6 or Vacuum MV Circuit Breaker In Specific Switching Applications
Many years of experience in developing both SF6 and vacuum medium-voltage circuit breakers has yielded up ample evidence that neither of the two technologies is generally better than the other,… Read more
Sep 14, 2015 | Medium Voltage
6 Customer Requirements For a Generator Regarding Power Demand
To select an on-site engine/generator sets (gensets), you’ll need to determine the power demand requirements which must be met under operating conditions, of course. Let’s talk about six recognized customer genset… Read more
Sep 12, 2015 | Energy and Power
5 Steps To Safely Shutdown a Large Generator
Normally, units are removed from service through operator initiation of distributed control system (DCS) commands or turbine trip buttons that shutdown the prime mover. Closure of steam or fuel valves… Read more
Sep 11, 2015 | Energy and Power
Modernizing An Old Hardwired Relay Logic With Modern PLC System
This technical article presents the modernization of a machine control system that will be changed from an old hardwired relay logic to PLC programmed logic. The field devices to be… Read more
Sep 09, 2015 | Industrial Automation
Selection of a suitable softstarter for application with conveyor belts
Conveyor belts can have a lot of different looks and directions of use. It is a typical constant torque load with low to high braking torque depending on how heavy… Read more
Sep 07, 2015 | Industrial Automation
The Basics of Electrical Bus Protections
When we examine electrical protection schemes, the best place to start is with electrical bus protections, as they are the easiest to protect. They utilize the fundamental concept of the overcurrent relay (Figure 1)…. Read more
Sep 05, 2015 | Energy and Power
Can you really reduce kVA billing after installing power capacitors?
This technical article I dedicate to stubborn factory owners who still don’t believe and don’t want to spend the money on optimizing the factory costs. Not all of them are… Read more
Sep 04, 2015 | Energy and Power
8 Recommended Periodic Inspections of a Substation Transformer
The following periodic tests and inspections are recommended for routine maintenance of the medium power substation transformer. Gauge readings Cooling fans Control wiring Paint finish Fluid dielectric test Bushing and… Read more
Sep 02, 2015 | Testing and Commissioning
3 Conditions That Can Damage Your PLC
In certain applications, the operating environment may have extreme conditions that require special attention or otherwise can seriously damage PLCs. These adverse conditions include excessive noise and heat and nuisance… Read more
Aug 31, 2015 | Industrial Automation
19 Essential Information You Can Find On Motor Nameplate
Motor nameplate is normally located on all produced electric motors. Understanding nameplate information can be hard sometimes, but is essential. In most countries it is a requirement for manufacturers to… Read more
Aug 29, 2015 | Electric Motor
Few Good Tips For Estimating and Optimizing Pumping Energy Costs
To help estimate pumping energy costs: To compare different system and pumping equipment proposals and make an intelligent choice, three facts will need to be established: Will the process require varying… Read more
Aug 28, 2015 | Industrial Automation
Electrical Design Project Of a Small Bakery
A small bakery with just a counter and storage areas is simple to design. The electrical design follows the layout for a house, but care must be taken on loading factors if… Read more
Aug 26, 2015 | Cables
PLC Latch (Flip-Flop) Logic Function – Like a Sticky Switch!
More complex systems cannot be controlled with combinatorial logic alone. The main reason for this is that we cannot (or choose not to) add sensors to detect all conditions. In… Read more
Aug 24, 2015 | Electrical Lectures
Things About MCBs That Every Low Voltage Electrician Should Know
Miniature circuit breaker – MCB is a thermo-magnetic device, meaning that it has two methods of circuit interruption. A thermal mechanism, usually a bi-metallic strip, provides protection against moderate overcurrent…. Read more
Aug 22, 2015 | Energy and Power
