Annual Preventive Inspection of Reactive Power Compensation
The annual preventive service significantly reduces the risk of faults and short circuits, extends the service life of capacitors and switching elements, and minimizes the risk of penalties for not meeting the power factor or for unwanted reactive energy. In practice this means fewer outages, lower thermal stress on the switchboard, a correctly set controller and metering, a clean and properly ventilated compensator, and a fully documented equipment condition. All of this comes at a single fixed annual price that is easy to approve and budget for.
The preventive inspection, including the statutory electrical inspection, comprises a visual and technical check of the compensator and switchboard; verification of cleanliness, ventilation, and filters; retightening of power terminations and checking contact resistances; measuring capacitor-bank capacitance, assessing losses and fuse condition; checking contactors or semiconductor switching stages; checking detuning/series reactors and correct detuning. We verify the settings and operation of the power factor (reactive power) controller, the correct CT orientation and CT/PT ratios, phase loadings, and the effectiveness of the compensation in kvar. Where appropriate, we perform thermography and verify protection devices. The assessment is concluded with the electrical inspection in accordance with applicable regulations.
At the end you receive an inspection report and a preventive-maintenance protocol with photo documentation, a prioritized list of deficiencies and recommendations, a proposal for the optimal target power factor and step configuration, recommendations for replacements including indicative prices and lead times, and a proposed maintenance periodicity. Critical defects are communicated without delay together with safe interim measures. The final report is normally delivered within ten working days after the inspection.
For a truly hands-off experience, we offer optional add-ons: remote monitoring using Janitza UMG with GridVis analytics (automatic power quality reports, alarms for power-factor drops or capacitive reactive power, an overview of harmonics and phase overloads); the “PF Compliance Watch” service (monthly review of invoices and trends with quick corrective action before entering penalty bands); and a mini-audit of settings after technology changes or when connecting photovoltaics. For applications with rapidly changing loads, we can also recommend and supply the KVARBOX semiconductor compensator, which handles load dynamics, compensates both inductive and capacitive reactive power, and keeps the power factor stable without step hunting.
Pricing is kept simple: the preventive inspection, travel, and the electrical inspection are bundled into one fixed annual fee per site; only then are spare parts and work beyond the preventive scope carried out after your prior approval. This model gives you certainty of scope and cost, plus a clear view of what is changing and why.
The program is designed to materially reduce the three most common risks: technical (fault, fire, downtime), financial (power-factor penalties, unwanted reactive energy charges, accelerated wear of components), and operational (unstable controller behavior, incorrect metering, inappropriate step configuration). If, after our preventive visit and the recommended fine-tuning, the power factor under normal operation still remains below the target and it is shown that the cause is on our side, we will perform a one-off corrective visit without charging additional labor.
We recommend adopting this annual compensation control regime so you can enjoy a full year of peace of mind: a safe compensator, a stable power factor, and zero surprises on the electricity bill.
The price for the annual preventive inspection of reactive power compensation is 12,900 excluding VAT. Orders: +420 777730002 or email kbh@kbh.cz