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.
Forms of Separation in LT Panels: Form 1, 2b, 3b, 4b
Form 1 to Form 4b describe how much internal partitioning an LT panel has. Here is what each means, what it costs and how to choose…
7 min readSwitchgear, Panels & ProtectionAPFC Panel: What It Is and How to Size One
An APFC panel switches capacitor banks automatically to hold power factor near unity. Here is how to work out the kVAr, the steps and the detuning…
6 min readSwitchgear, Panels & ProtectionMCC Panel vs PCC Panel: Difference and When to Use
PCC panels take power in and distribute it; MCC panels start and protect motors. Here is how the two differ and how to decide what your…
6 min readSolar & Energy EfficiencyHarmonics and Power Quality: A Guide for Plant Engineers
A plain-language guide to harmonics in industrial plants: where they come from, what they damage, how to measure them and the usual fixes.
6 min readSolar & Energy EfficiencyNet Metering in India: What to Check Before You Apply
Net metering rules for rooftop solar differ by state and DISCOM; here is a checklist of what to confirm before you buy equipment or apply.
6 min readSolar & Energy EfficiencyEnergy Monitoring in Factories: What to Measure and Why
Factory energy monitoring starts with the right measurements: kWh, demand, power factor, load profile and machine-level data. Here is what to measure and how.
6 min readSolar & Energy EfficiencyMPPT vs PWM Solar Charge Controller: Which to Choose
MPPT and PWM charge controllers treat panel voltage very differently; here is how each works, how to size one and which suits your battery system.
6 min readSolar & Energy EfficiencySolar DC Cable Size and Protection Basics for Plants
A practical guide to solar DC cable selection, voltage drop, string fuses, isolators, surge protection and earthing for Indian solar plants.
6 min readSolar & Energy EfficiencySolar ACDB, DCDB and Junction Boxes Explained
Array junction box, DCDB, AC combiner box and ACDB each protect a different stage of a solar plant; here is what they contain and how to…
6 min readSolar & Energy EfficiencyOn-Grid vs Off-Grid vs Hybrid Solar System: How to Choose
On-grid, off-grid and hybrid solar systems differ in batteries, backup and grid dependence; this guide shows which fits your site and what to check.
6 min readSolar & Energy EfficiencySolar System Size for a Shop, Factory or Institution
Estimate solar system size from your electricity bill, daytime load, roof area and sanctioned load, with worked examples for a shop, factory and institution.
6 min readSolar & Energy EfficiencySolar PCU vs Hybrid vs Grid-Tie Inverter: Which to Buy
A plain comparison of grid-tie inverters, solar PCUs and hybrid inverters: what each does, what happens in a power cut, and how to pick for your…
7 min readPumps, Cables & Buying GuidesValves for Pump Lines: Gate, Globe, Non-Return Basics
How gate, globe and non-return valves differ, where each belongs on a pump line, and how to choose size, rating and type to avoid water hammer…
7 min readPumps, Cables & Buying GuidesHow to Write an RFQ for Electrical Equipment
A practical checklist for writing an RFQ for electrical equipment so suppliers quote the same scope and you can compare offers on a like-for-like basis.
6 min readPumps, Cables & Buying GuidesSpare Parts for Panels, Drives and Motors: Identify Right
A guide to identifying the right electrical spare from the nameplate, part number and photos, so the part you order fits and works the first time.
6 min readPumps, Cables & Buying GuidesHow to Buy Electrical Equipment on GeM: Buyer, Supplier
A plain overview of how GeM works for electrical equipment, for government buyers and for suppliers, with tips on specifications and bid documents.
6 min readPumps, Cables & Buying GuidesElectrical Safety PPE: Insulated Gloves Classes, Helmets
A practical guide to electrical PPE: insulated glove classes, helmets, footwear and mats, and which to use for different tasks and voltages.
6 min readPumps, Cables & Buying GuidesCrimping and Cable Cutting Tools: How to Choose
How to choose crimping tools for lugs and cable cutters and strippers for copper and aluminium conductors, by size range, force and duty.
7 min read