Blog — an engineer's perspective
Practical materials from LK Energy engineers: switchgear equipment, relay protection and automation schemes, substations, documentation and choosing a contractor.
Bolted Connections for Current-Carrying Busbars: Why Reliability Depends on Contact Pressure, Not Bolt Grade
Why an 8.8 bolt isn't always better than a 5.8, and how tightening torque and a Belleville washer save busbar contacts from overheating. An engineering breakdown from the shop floor
RP, RTP, TP — What's the Difference and Which Solution to Choose
RP, RTP, and TP/KTP: definitions, a comparison table, and selection logic — transformation, standard switchgear cubicles, application scope. A reference guide for design engineers.
How to Choose a Protection and Automation Scheme for a 10 kV Switchgear Cubicle: Protection Functions and Terminals
Protection functions for 10 kV cubicles — incomer, feeder, bus coupler, VT, auxiliary transformer: overcurrent protection, instantaneous cutoff, earth-fault protection, automatic transfer switching — and RS83 series terminals in LK Energy's standard solutions.
How to Fill Out the Questionnaire for a KTP or KSO: A Step-by-Step Guide
A step-by-step guide to the questionnaire for a KTP or KSO: network parameters, cubicle composition, switching devices and protection, metering, design execution, and common mistakes.
A Cheap Solar Power Plant Bid: Where the Contractor Cuts the Budget — and Why the Plant Underdelivers Power at Peak for Years
Where a contractor cuts the budget on a solar power plant and why the plant underdelivers power at peak. An 11-point checklist for vetting a project before signing. Experience from LK Energy service, Odesa.
Free guide · PDF
Choosing a solar contractor: where budgets get cut and how to spot it before you sign
- an 11-point checklist of where costs get trimmed in a solar plant project;
- two illustrative examples from service practice — in plain language;
- what to check in a contractor’s proposal before the contract.
Author — Viacheslav Yurdyk, quality engineer at LK Energy Group. 8 pages.
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