Q1: What are the key differences between this 20kVA model and the smaller 15kVA version?
The primary difference is load capacity and application scale. The 20kVA model is designed for heavier cumulative loads or single, very high-power devices (e.g., large industrial motors, commercial HVAC). It typically features more robust internal components, such as higher-rated relays and transformers, to handle sustained high-current operation. While both share core technologies, the 20kVA unit is the choice for small workshops, light industrial settings, or large properties where the total connected load exceeds 12-15 kVA.
Q2: Is professional installation required for a 20 kVA unit?
Yes, professional installation by a qualified electrician is strongly mandated and critical for safety. Due to its high capacity, this unit must be integrated into your main or sub-distribution panel, involving work with high-current cables and circuit breakers. A professional ensures:
- Correct wire sizing and secure terminations to handle up to ~90A of current.
- Proper integration with your existing electrical protection devices (MCBs, RCDs).
- Compliance with all local electrical codes and safety standards.
- Safe placement with adequate ventilation for heat dissipation.
Q3: Can this stabilizer handle the high starting current (inrush) of large motors?
This stabilizer is well-equipped to handle significant inrush currents, but careful sizing is crucial. A common rule for motor loads is to select a stabilizer with a capacity of 3 to 5 times the motor's rated power (kW/kVA). For example, a 5.5 kW motor might require a 16.5 kVA to 27.5 kVA stabilizer solely for its startup. The 20 kVA model is suitable for motors up to approximately 4-6.5 kW, depending on the exact inrush characteristics. Always consult the motor's datasheet and, if possible, provide these details to your supplier for a definitive recommendation.
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