Lightweight 3KVA Online Tower UPS C3KS 2.7KW Double Conversion Square Wave Output Single Phase UPS Only 7.7kg For Server Room Telecom Lab

3KVA High Frequency Online Tower UPS C3KS – Double Conversion Online UPS with Square Wave Output

Ultra-Light, Single-Phase Power Protection for Server Rooms, Industrial Control and Telecom Sites

The C3KS high frequency online tower UPS is a 3 kVA / 2.7 kW double-conversion online uninterruptible power supply from FEI XIANG DA POWER. Built on DSP digital control and high-frequency PWM inverter technology, it rebuilds the output waveform from a stabilised DC bus, shielding your critical load from mains blackouts, voltage sags, surges, frequency drift and waveform distortion.

Thanks to its transformerless high-frequency architecture, the C3KS delivers a square wave output while staying exceptionally compact and light – just 190 × 323 × 368 mm and a net weight of only 7.7 kg.

Key Features

• Double-Conversion Online Topology – The load never sees the raw mains waveform; line-to-battery transfer happens in 0 ms with no relay switching and no output interruption.
• Single-Phase In / Out – Accepts a single-phase three-wire supply (L + N + PE), without derating.
• External Battery – Supports 72 / 96 VDC battery banks (12 V / 7 Ah × 6 or 8 pcs), letting you size backup time to your needs.
• Active Power Factor Correction – Input power factor > 0.99 for low harmonic pollution.
• Wide Input Window – Input voltage 85–300 VAC, frequency 40–70 Hz, keeping the inverter online through severe brownouts and frequency excursions.
• Accurate Output – 220/230/240 VAC ±2%, square wave output for resistive and switch-mode power supply (SMPS) loads.
• Strong Overload Capability – 105–125% for 1 min, 126–150% for 30 s, >150% for 100 ms.
• ECO Mode & Cold Start – Higher efficiency in ECO mode; can start and power the load with no mains present.
• 50/60 Hz Selectable – Fixed-frequency output or phase-locked tracking.
• Complete Communication Suite – RS232 standard; USB, dry contact, MODBUS card, smart slot and EPO optional.

Typical Applications

The C3KS is ideal for data centres and server rooms, industrial automation and CNC control cabinets, medical diagnostic and laboratory instruments, telecom base stations and edge sites, security and traffic-control systems, and precision testing lines for export electrical products – as well as any site where mains quality is poor or a generator serves as primary or backup power.

Important – Square Wave Output

The C3KS is a transformerless high-frequency unit and therefore delivers a square wave, not a sine wave. It suits resistive loads and switch-mode power supplies (computers, servers, network and telecom equipment, LED drivers, laboratory instruments with electronic power stages). Loads that rely on a sine wave – motors and compressors, transformer-coupled or iron-core power supplies, audio equipment, and medical instruments requiring pure sine input – should be powered by an isolation-transformer model or fitted with an external isolation transformer on the output side.



Technical Specifications

Quality Assurance

95% of core materials are self-produced or directly sourced from qualified suppliers, with full-process quality control from sheet metal to final assembly. Every unit passes 100% initial electrical safety testing and a 48-hour continuous aging test before delivery.

Call to Action (CTA)

Contact us today for a quote or technical datasheet.
WeChat / WhatsApp: +86 13360479957
Website: www.feixiangdapower.com
Email: snow@feixiangdapower.com