EDWIN OGIE LIBRARY

3-Phase Servo AVR (AC Voltage Stabilizer) — Troubleshooting, Repair & Maintenance By Edwin Ogie • December 18, 2025 • -- AC Voltage Stabilizer — 3-phase servo control type (example from user photo) A practical, step-by-step guide to diagnose, repair and maintain 3-phase servo Automatic Voltage Regulators (AVR) / servo voltage stabilizers. Written in simple terms for technicians and maintenance teams working with generators, UPS rooms and factories. Includes videos, spare-parts list, safety checklist, troubleshooting flow and links to internal/external resources. Contents Why this matters In environments with unstable mains (frequent sags, surges or phase imbalance) a servo AVR protects sensitive equipment by continuously adjusting an autotransformer tap via a small servo motor. A well-maintained stabilizer saves equipment, reduces downtime and prevents costly damage. ...

Alternator Care & AVR Calibration — Step-by-Step Tests By Edwin Ogie • December 18, 2025 • -- Alternator maintenance and AVR calibration — practical, field-tested procedures for technicians. This practical guide explains alternator care and AVR (Automatic Voltage Regulator) calibration with safe, step-by-step tests you can run on-site. Ideal for technicians, repair shops and maintenance engineers — includes inspection checklists, static and dynamic tests, common faults, and repair advice. Keywords: AVR adjustment, alternator voltage problem . Contents Why alternator care and AVR calibration matter The alternator (generator head) and its AVR determine the quality and reliability of the electrical output. Poor alternator maintenance or mis-adjusted AVR leads to unacceptable voltage regulation, equipment trips, harmonics, overheating and premature failure. ...

Wye (Y) Phasor Calculations — Nigeria Case Study (230/400 V) — Step-by-Step By Edwin Ogie • December 18, 2025 • -- Wye phasors, line & phase voltages, current and power — practical calculations for Nigerian electricians. This post converts the WYE diagram in your screenshot into clear, accurate phasor math using **Nigeria standard voltages**. You’ll learn: how to compute line-to-line magnitude from phase voltages, perform phasor subtraction (digit-by-digit), compute currents for balanced Y loads, and calculate kVA/kW. A 40-question timed CBT quiz is included. Contents Quick orientation — voltage systems Two common low/medium voltage three-phase standards you may encounter: US-style 120/208 V Wye : Phase (line-to-neutral) ≈ 120 V, Line-to-line ≈ 208 V (because 120 × √3 ≈ 208). Nigeria / many countries: 230/400 V Wye : Phase = 230 V (line-to-neutral), Line-to-line = 230 × √3 ≈...

EO When Promises Break — a real-life story about adultery, consequences & repair By Edwin Ogie — Benin City · A compassionate, practical look at healing after infidelity Expand all Collapse all A true-to-life style narrative inspired by many real cases — names and identifying details changed. Click any heading to open that section. Opening — how it started: small choices, big cost Chinedu and Ifeoma were married five years. They had a small home in Benin City, two children, and routines built on shared chores and Sunday prayers. Work was busy; communication thinned; phone screen time increased. A workplace friendship — evenings of conversation that began "harmlessly" — slid into secret messages and then a physical affair. When Ifeoma discovered messages on Chinedu’s phone, the world they had built shifted in an instant. The discovery was not a sin...