01
Measure
PF, THD and load profile survey
Power Quality & Correction
Product detail
Product snapshot
Power Quality & Correction
APFC, harmonic filtering and power-quality metering for cleaner, lower-penalty LV systems.
02
Control
6/12-step APFC controller logic
03
Correct
Capacitors, reactors and AHF options
04
Verify
Target PF and harmonic performance check
PF target
Load kW, starting PF, target PF and kVAr sizing
Harmonics
THD survey, 7%/14% detuning and AHF selection
Switching
Contactor or thyristor stages by load profile
Cooling
Capacitor heat load, fan/filter and thermostat planning
Read more
Automatic Power Factor Correction (APFC) banks, detuned reactor banks, active harmonic filters, and power quality analysers to eliminate KPLC power factor penalties and improve system efficiency.
Nairobi Power Engineers designs and manufactures the assembly around site duty, prospective fault level, installation access, service continuity, cable entry and maintainability. The supply can be configured with ABB, Schneider Electric or CHINT equipment according to duty, lead time and lifecycle support.
All aspects of the design are detailed in 2D and 3D CAD options. Distribution assemblies are available to the same specification across main, sub-main and final-board levels.
- Automatic Power Factor Correction (APFC) capacitor banks (415V/525V)
- detuned iron-core reactor banks (7% or 14% tuning) for harmonic mitigation
- Active Harmonic Filters (AHF) to eliminate high-frequency distortion
- Standalone PFC component supply: capacitors, reactors, controllers, contactors
- Power quality surveys, load-profile monitoring, and harmonic analysis studies
- Resonance frequency calculations
- Capacitor step sizing and granularity checks
- Detailed harmonic measurement analysis
- Thermal management and spacing review
OEM selection basis
ABB, Schneider Electric and CHINT fit where they genuinely belong.
- ABB RVT/RVC controllers and heavy-duty capacitors for intelligent, multi-step correction.
- Schneider VarSet capacitor banks and PowerLogic energy-management meters.
- CHINT NJK controllers and capacitor units for economical commercial power quality.
Anatomy of an NPE panel
Inside a power factor correction panel
NPE builds automatic, multi-step power factor correction panels — and detuned versions for harmonic-rich installations — at our Nairobi manufacturing centre. The numbered call-outs map the components inside each lineup.
- 1Current transformers (CTs)
- 2Microprocessor PF controller
- 3HRC fuse capacitor protection
- 4Capacitor-switching contactors
- 5Power capacitor steps
- 6Detuned reactors (harmonic duty)
- 7Switch disconnector
Build standard
Rated output
Up to 1250 kVAr
Voltage
400 V, 50 Hz
Control
Multi-step auto
Protection
HRC fuses
Enclosure steel
1.5–2 mm
Harmonics
Detuned option
Ventilated enclosures with power capacitors, PF regulators and voltage-stabiliser options for industrial power quality.
Technical detail library
Product Range & Target Markets, Switchboard Features and Options:
Filter the relevant component trading lines and bespoke assemblies for this product family by market segment. Open the cards for ratings, source basis, build options and direct contact links.
Engineering Calculator
Instant Technical Sizing
Enter parameters for real-time IEC/KPLC-standard sizing. Results update dynamically.
Sizing results
Required kVAR
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Recommended Stages
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Contactor Current
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Detuned Reactor Sizing
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* For reference only. NPE engineering verifies configurations prior to build.
Frequently Asked Questions
What is included in Power Quality & Correction?
Our Power Quality & Correction solutions are custom-engineered and assembled locally at our Baricho Road workshop in Nairobi. A standard build includes high-quality modular enclosures, premium copper busbars (rated for local environmental conditions), type-tested circuit breakers or control elements from trusted global partners (ABB, Schneider Electric and CHINT), and comprehensive routine test certifications before delivery.
Which standards and ratings should be confirmed?
All assemblies comply with KEBS and EPRA regulations. You should confirm the required operational voltage (typically 415V three-phase or 240V single-phase in Kenya), rated current, prospective fault levels (e.g., 35kA or 50kA as per KPLC system requirements), form of separation (up to Form 4b), IP rating (IP31 indoor / IP54 for dust-heavy sites), and cable entry orientation (top or bottom entry).
How does NPE choose the product architecture?
NPE starts with the single-line diagram, load schedule and operating sequence, then selects the power quality and correction path, device families, enclosure format, controls and testing requirements.
What information does NPE need to quote Power Quality & Correction?
Send the single-line diagram, load schedule, incoming supply details, fault level if known, preferred OEM brand, cable entry direction, installation environment and delivery location.
Can NPE supply ABB, Schneider Electric and CHINT options?
Yes. NPE can quote ABB, Schneider Electric, CHINT or a mixed-OEM architecture according to rating, availability, monitoring requirement, lifecycle support and budget.
Can the system include monitoring and remote signals?
Yes. Metering, alarms, Modbus, Ethernet, BMS contacts, SCADA points and commissioning checks can be included where the selected product family supports them.
Product enquiry
Do you have a Power Quality & Correction enquiry? Get in touch...
Use the calculators for a first-pass engineering check, then send us the SLD and load schedule for a project-ready selection.
Built and supported in Nairobi
Every power-quality and correction panel NPE builds is sized from your metering data and harmonic survey, assembled and tested at our Baricho Road workshop, and handed over with the commissioning records your consultant expects. Use the enquiry routes above for a sized quotation, or the form alongside to schedule an engineer.
24/7 Emergency Support
Electrical service you can count on
When power quality and correction equipment fails, you need fast, reliable help from experienced engineers. We offer around-the-clock emergency support across Nairobi and East Africa — keeping your plant safe and powered, day or night. Whether it is an urgent breakdown or a scheduled repair, our team is ready to respond whenever you need us.
Cost and Estimates
Power factor correction costs vary significantly depending on several key factors. Here is what you need to know to make informed decisions and avoid unexpected expenses.
What Affects the Cost?
The price of a power factor correction package depends on the load schedule, fault level, enclosure form and IP rating, plus the OEM equipment you specify. Site conditions and delivery timelines also move the number.
Get a Detailed Estimate
Our engineers issue itemised quotations covering equipment, assembly, factory testing and delivery — no hidden fees. You know exactly what to expect before any work begins.
Smart Maintenance
Scheduled inspection, thermographic surveys and torque checks catch small issues early, helping you avoid major repairs. Planned maintenance extends system life and protects uptime.
Fast, Reliable Response
Whether it is a scheduled upgrade or an urgent call, our Nairobi workshop at Baricho Road responds quickly and gets the job done right — minimising downtime and keeping you safe.
When in doubt, put safety first
If you are ever unsure or feel unsafe around an energised assembly, do not take chances — call a licensed engineer. Safety always comes first. Feel free to contact us or give us a call.
+254 0737-944-014How to stay safe during an electrical emergency
Overheating or Burning Smell
Isolate the supply if it is safe to do so, keep people clear of the panel and call us immediately. A burning smell around an enclosure usually indicates a loose termination or an overloaded circuit and must never be left running.
Nuisance Tripping
Repeated tripping is a symptom, not the fault. It usually points to overload, an earth leakage path or a device sized incorrectly for the duty. We test the circuit, verify discrimination and correct the root cause rather than resetting the device.
Safe Isolation and Access
Only competent, authorised personnel should open a live assembly. Follow lock-off and permit-to-work procedures, and use the correct PPE and rated test equipment for the fault level of the installation.
Routine Inspection Intervals
We recommend periodic inspection and testing in line with the KS/IEC regime for your installation category, with thermographic scanning on critical boards. We can hold the schedule for you and report against it.