Frequently Asked Questions
Answers to the most common questions about selecting regulators and transformers, manufacturing and the quotation process.
Frequently Asked Questions
01What is a voltage regulator and what does it do?
A voltage regulator is an automatic protection device that keeps the voltage supplied to equipment close to its nominal value when mains voltage rises or drops. It protects machines, electronic boards and drives from failures and lifetime loss caused by voltage fluctuation.
02What is the difference between a servo and a static regulator?
A servo regulator corrects voltage steplessly and precisely with a servo-driven variac, but more slowly. A static regulator corrects in steps using electronic switches, very fast and with no moving parts. The choice depends on the load’s accuracy and speed needs.
03Are your products covered by insurance?
Yes. ONS Enerji products are covered by insurance for 2 years; in case of burn-out or failure, a payout can be claimed under the insurance cover. Scope, exclusions and the claim process follow the policy terms; please contact us for details.
04What is the difference between an autotransformer and an isolation transformer?
An autotransformer shares one winding between input and output; it is economical and efficient but gives no galvanic isolation. An isolation transformer has two electrically separate windings, providing safety and noise filtering.
05Do you manufacture custom kVA or voltage ratings?
Yes. We size and manufacture regulators and transformers to your load, input/output voltage and phase configuration. Simply share your details through the quote form.
06What information is needed for a quote?
Application, total load power (kW/kVA), input and output voltage, number of phases, quantity and desired lead time. You can submit the form even with incomplete data; our engineers will get back to you.
07Do you quote for projects abroad?
Yes, we prepare quotations for international projects. Please share the destination country, grid voltage, frequency (50/60 Hz) and phase configuration. This website is also available in English.
08Can a regulator replace a UPS?
No. A regulator only corrects voltage deviations; it does not supply power in an outage. If outages are also a risk, it can be used together with a UPS.
09How do I choose a regulator’s kVA rating?
Calculate total load and motor starting currents, convert watts to VA using the power factor, and add roughly 20–25% headroom. Use our kVA calculator for a quick first value.
10What is the lead time?
Lead time varies with the unit’s power and custom design requirements. The exact time is confirmed at quotation, after your load data has been reviewed.
Let’s define the right solution for your project
Share your load data and operating conditions; we will confirm kVA, voltage and protection needs together with our engineers.