Electrical equipment guides
Practical guides from our engineers on choosing, sizing and specifying motors, panels, transformers, batteries, inverters, solar equipment, pumps and cables for Indian industry.
Cable Lugs, Glands and Trays: Terminations and Routing
How to match lugs to conductors, glands to cable types and trays to the route, so terminations stay tight and cable runs stay safe and tidy.
7 min readPumps, Cables & Buying GuidesPower Cables: XLPE vs PVC, Armoured vs Unarmoured, FRLS
How to choose between XLPE and PVC insulation, armoured and unarmoured construction, and FRLS sheathing for LT and HT power cables.
7 min readPumps, Cables & Buying GuidesHow to Select Cable Size: Current, Voltage Drop, Fault
Cable size is set by the largest of three checks: current rating after derating, voltage drop, and short-circuit withstand. Here is how to do each.
6 min readPumps, Cables & Buying GuidesFire Fighting Pumps: Electric and Diesel Sets to Specify
General guidance on specifying electric, diesel and jockey fire pump sets, with a checklist to discuss with your consultant and the fire authority.
7 min readPumps, Cables & Buying GuidesCentrifugal Pump Selection: Flow, Head, NPSH, Materials
A practical method to select a centrifugal pump: define flow and total head, check NPSH, pick materials and seals, then size the motor.
7 min readPumps, Cables & Buying GuidesSubmersible vs Vertical Turbine vs End-Suction Pumps
A buyer's comparison of submersible, vertical turbine and end-suction pumps covering application, installation, maintenance and what to ask for.
7 min readMotors, Gearboxes & DrivesDC Motors vs AC Motors in Rolling Mills and Cranes
Compare DC and AC drives for rolling mills and cranes: torque control, maintenance, regeneration and retrofit cost, and when each still makes sense today.
7 min readMotors, Gearboxes & DrivesUsing a VFD on Pumps and Fans: How the Saving Works
How a variable frequency drive saves energy on pumps and fans through the affinity laws, a worked example against throttling, and when the saving is small.
7 min readMotors, Gearboxes & DrivesCrane Duty and Mill Duty Motors: What Is Different
Crane duty and mill duty motors are built for frequent starts, shock loads and high peak torque. See how they differ from standard motors and how…
6 min readMotors, Gearboxes & DrivesGearbox Types Compared: Helical, Bevel, Worm, Planetary
Compare helical, bevel-helical, worm and planetary gearboxes by efficiency, torque density, shaft layout and cost, and learn how to size one with a service factor.
7 min readMotors, Gearboxes & DrivesWhy Industrial Motors Fail: Bearings, Windings, Prevention
Why industrial motors fail, from bearings and lubrication to winding overheating, voltage unbalance and VFD effects, and what to test and check to prevent it.
7 min readMotors, Gearboxes & DrivesHow to Read a Motor Nameplate: Every Field Explained
A field-by-field guide to the induction motor nameplate, with a worked 22 kW example showing how to check current, slip and efficiency from the numbers.
7 min readMotors, Gearboxes & DrivesMotor Frame Sizes and Mounting Types: B3, B5, B35
What motor frame numbers mean, how B3, B5, B35, B14 and V1 mounting differ, and the dimensions to measure when replacing a motor.
7 min readMotors, Gearboxes & DrivesSlip-Ring vs Squirrel-Cage Induction Motors
How slip-ring and squirrel-cage motors differ in starting torque, current, speed control and upkeep, and which one to pick for cranes, mills and pumps.
7 min readMotors, Gearboxes & DrivesDOL vs Star-Delta vs Soft Starter vs VFD Compared
DOL, star-delta, soft starter or VFD? Compare starting current, torque and cost, and learn which method suits pumps, fans, conveyors and crushers.
7 min readMotors, Gearboxes & DrivesFlameproof (Ex d) Motors for Hazardous Areas Explained
What Ex d flameproof motors are, how gas group, temperature class and zone decide the selection, and the installation mistakes that void the protection.
7 min readMotors, Gearboxes & DrivesLT Induction Motor Selection Guide: IE2 vs IE3
A practical guide to choosing a 415 V induction motor, from load and duty to IE2 versus IE3 efficiency, with a worked running-cost comparison.
8 min readBatteries, Inverters & UPSSolar Batteries: Tubular, Gel, AGM or Lithium?
Solar batteries cycle every day, so the cheapest battery is rarely the best. Compare tubular, gel, AGM and lithium for off-grid and hybrid solar, with a…
6 min read