CyberPower OL6KRTHD 6KVA/6KW Double-Conversion Online Rackmount UPS

Overview

The CyberPower OL6KRTHD is a 6KVA/6000W double-conversion online UPS built for rack-mounted critical infrastructure — think server rooms, edge compute closets, network video surveillance backends, and any environment where a split-second power anomaly can corrupt data or drop cameras mid-event. Unlike standby or line-interactive designs that switch to battery only after detecting a fault, the OL6KRTHD runs load exclusively off its inverted DC bus at all times. The utility feed charges the battery continuously; the load never sees raw AC. That architecture eliminates the 4–8ms transfer gap that cheaper UPS units rely on, making it the correct choice when connected equipment has zero tolerance for even momentary interruptions.

Rated at a true power factor of 1.0, the OL6KRTHD delivers all 6000 watts of its rated capacity to resistive and near-unity loads — no derating. That is a meaningful difference versus older UPS units rated at 0.8 PF, which yield only 4800W from a nominal 6KVA chassis. Provisioned at 200–240V output with a wide 120–280V input acceptance window and a broad 40–70Hz input frequency range, the unit handles the voltage swings and frequency drift common in industrial facilities, generator-backed sites, and international deployments without forcing a battery transfer.

Key Features

Double-Conversion (Online) Topology: Load runs continuously from the inverter — no transfer time, no vulnerability to the short sags and micro-interruptions that knock line-interactive units onto battery. Critical for NVR arrays, RAID storage, and high-availability access control servers where even 4ms of drop can cause write errors or process restarts.

6KVA / 6000W at PF 1.0: Every watt of nameplate capacity is usable on modern server and networking loads. Compare to a PF 0.8 unit where a