Stabilizer screening
Voltage Stabilizer kVA & Working-Range Calculator
Estimate a stabilizer planning kVA from connected watts, power factor, surge and margin, then compare observed voltage against a candidate working range.
Your result
Enter measured or nameplate values to calculate.
- Base apparent load
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- Surge demand
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- Planning rating
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- Range check
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Method
Base VA = watts ÷ entered power factor. Entered surge factor and margin are applied separately. Voltage compatibility compares observed extremes with the candidate input range.
Important limits
Do not use guessed appliance watts, power factor or surge. A product working range and output regulation are model-specific; industrial loads require professional review.
Technical reference
Check both stabilizer kVA and its working input-Voltage range. Enough kVA does not establish that the unit covers the lowest and highest Voltage measured at your site.
Read the load and range separately
1.0 kW of connected load.
1,000 ÷ 1,000 ÷ 0.8. Load-only reference, before starting/surge and margin inputs.
| Stated input range | Does it cover those readings? |
|---|---|
| 170–260 V | Yes, the observed minimum and maximum are inside this range. |
| 200–240 V | No, both observed extremes fall outside this range. |
These numbers explain the calculation; they are not a stabilizer recommendation. Enter your measured load and Voltage. The starting/surge factor and margin are application inputs, not universal settings for every Motor.
Calculation guidance and assumptions
Estimate stabilizer kVA with reserve and screen whether the stated input range covers measured voltage.
Compare stabilizer size and working range with Vukar Automation's tool. Use the load and voltage readings from your site.
What to enter
Use current, project-specific values for connected load, reserve, measured voltage and stated input range. Check every unit before calculating and compare like-for-like inputs.
How to use the result
Use kVA and range coverage as screening estimates. Starting demand, phase, load type, correction capability, duty and manufacturer limits require separate verification.
Before making a decision
Verify source measurements, equipment specifications and operating conditions. Have a qualified professional review the final selection, safety and installation requirements before purchase, connection or construction.