Shenzhen High-Frequency Series Three-In/Three-Out UPS, Supplier of Shenzhen High-Frequency Series Three-In/Three-Out UPS - Shenzhen Nuonai Power Supply. High-frequency UPS with input AC380V, output AC380V, supports redundant parallel operation of 4 units, output voltage stability: ±0.1Hz, output voltage waveform distortion: resistive load: 2%, rectifier load: 4%, voltage transient recovery time: 60ms, dynamic voltage transient range: 5% correction.