Which risk increases when a capacitor bank is switched ON in an unloaded three-phase power system?

💡 Explanation

When switching ON a capacitor bank, harmonic amplification occurs because the capacitor impedance interacts capacitively and inductively with source impedance, potentially resonating at a harmonic frequency, thus magnifying harmonics. Therefore harmonic amplification results, rather than voltage sag, transformer heating, or line tripping which involve different mechanisms.

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