CyberPower OL5KRTHD Online Double-Conversion UPS — 5kVA / 5000W
Overview
The CyberPower OL5KRTHD is a 5kVA / 5000W online double-conversion UPS designed for deployments where any power anomaly — sag, surge, frequency drift, or complete outage — is unacceptable. Unlike standby or line-interactive topologies that switch to battery only when utility power degrades, the OL5KRTHD keeps your load running exclusively off the inverter at all times. Utility power charges the battery; the battery powers the inverter; the inverter powers your equipment. The grid never connects directly to your load. For security operations centers, network equipment rooms, or surveillance recording infrastructure, this means zero transfer time and zero exposure to the dirty power that shorter-topology UPS units pass through during normal operation.
At a power factor of 1.0, every rated watt is usable watt — the 5000W output capacity is real, not a derating exercise. Deploy this alongside UPS and battery backup systems or as the backbone of a larger power protection infrastructure for critical network and security hardware.
Key Features
- Online Double-Conversion Topology: The load runs off the inverter 100% of the time — not just during outages. This eliminates the transfer gap present in standby and line-interactive designs. For NVRs or servers processing continuous video streams, even a 4ms transfer window can cause a reboot; here, there is no transfer window at all.
- 5kVA / 5000W at Unity Power Factor: A power factor of 1.0 means the 5000W rating is fully available to resistive and modern switching-mode power supply loads alike. No hidden derating for high-PF equipment — what the spec sheet says is what you can draw.
- True Sine Wave Output: The OL5KRTHD delivers a pure sine wave regardless of whether utility power is present. Active PFC power supplies — found in virtually every modern server, NVR, and network switch — require a sine wave source to operate correctly. Square-wave or approximated-sine UPS units can cause these loads to fault, overheat, or fail prematurely.
- Wide Input Voltage Range (120–280V): The 120V–280V input operating range means the unit stays on utility power across a wider band of voltage fluctuations before switching to battery. In facilities with known voltage instability or long cable runs, this extends battery life significantly by reducing unnecessary battery cycling.
- Input Frequency Flexibility (40–70 Hz): A 40–70 Hz input frequency acceptance window accommodates generator power, which frequently drifts outside the standard 47–53 Hz utility band. If your site uses a generator as backup or primary power, the OL5KRTHD will accept it without false alarms or battery switchover.
- 0.99 Input Power Factor: Drawing current at 0.99 input power factor, the UPS places minimal reactive burden on the upstream utility feed or generator. This matters when sizing your generator or circuit panel — the OL5KRTHD won't inflate your apparent power demand the way older ferro-resonant or older double-conversion designs did.
- Output THD ≤5%: Total harmonic distortion on the output is kept below 5%, which keeps sensitive analog and mixed-signal equipment — audio processors, industrial controllers, access control panels — from experiencing the noise-related faults that higher-THD sources cause.
- 3:1 Crest Factor Handling: A 3:1 crest factor rating means the OL5KRTHD can handle loads that draw short high-current peaks relative to their RMS current — a characteristic of switched-mode power supplies under load transients. This prevents output voltage collapse during startup surges or sudden load steps.
- Flexible Output Connections (Hardwire + NEMA L6-30P): Four AC outlets with both hardwire and NEMA L6-30P configurations give installers options for direct panel integration or plug-in rackmount PDU connectivity. The hardwire output is particularly useful in permanent equipment room builds where a clean, code-compliant installation is required.
- 50/60 Hz Output Frequency: The selectable 50/60 Hz output means this unit can protect equipment running on either international standard — useful in mixed-standard facilities or when protecting imported equipment spec'd for 50 Hz operation.
Integration and Compatibility
The OL5KRTHD is suited for use with network video recorders, server racks, PoE switch stacks, and access control head-end equipment where continuous, conditioned power is a system requirement rather than an option. The hardwire input and output make it a natural fit for licensed electrical work in equipment rooms; pair it with a managed PoE switch infrastructure to cover both the power conditioning and network distribution layers of a security installation. For guidance on sizing UPS systems to your camera and recorder load, refer to the power protection planning guide.
Frequently Asked Questions
Q: What is the difference between online double-conversion and line-interactive UPS topology?
A: A line-interactive UPS passes utility power directly to the load during normal operation and only switches to battery/inverter when voltage goes out of tolerance — introducing a brief transfer delay. The OL5KRTHD uses online double-conversion, meaning the load runs off the inverter continuously and is never directly connected to raw utility power. Transfer time is zero because there is no transfer event.
Q: Does the OL5KRTHD output a true sine wave?
A: Yes. The OL5KRTHD generates a true sine wave output at all times, whether running from utility or battery. This is required for compatibility with active PFC power supplies used in most modern servers, NVRs, and network equipment.
Q: Can the OL5KRTHD be used with a generator as an input source?
A: Yes. The 40–70 Hz input frequency acceptance range is specifically wide enough to accommodate generator output, which commonly drifts outside the standard utility frequency band. The unit will accept generator power without false battery switchovers.
Q: What output connections does the OL5KRTHD provide?
A: The OL5KRTHD provides 4 AC outlets with both hardwire and NEMA L6-30P output configurations, supporting either direct panel wiring for permanent installations or plug-connected PDU setups.
Q: What input voltage range does the OL5KRTHD support?
A: The unit accepts input voltages from 120V to 280V, allowing it to ride through significant utility voltage swings on battery while reducing unnecessary battery cycling in facilities with inconsistent power quality.
Q: What is the real power output capacity of the OL5KRTHD?
A: The OL5KRTHD is rated at 5000W with a unity (1.0) output power factor. Because the power factor is 1.0, the full 5000W is available to your load — there is no gap between the VA rating and the watt rating as exists on lower-power-factor UPS units.
The spec I always lead with on the OL5KRTHD is the unity output power factor — 1.0, not 0.8 or 0.9. On a 5kVA frame, that 0.2 difference is 1,000 watts of usable capacity you either have or you don't. When I'm sizing power for a dense NVR rack with redundant switches and a server, that margin matters, and this unit doesn't hide it in the fine print.
Technical Highlights:
- Online Double-Conversion: Zero transfer time because the load never connects directly to utility — the inverter is always between the grid and your equipment. No reboot risk on NVRs or recording servers during utility fluctuations.
- 120–280V Input Range: A 160V swing on the input side means this unit stays on mains through the kind of voltage sags that would force a narrower-window UPS onto battery. Fewer battery cycles, longer battery service life.
- 0.99 Input Power Factor: Drawing at 0.99 PF on the input side, the OL5KRTHD is nearly invisible to your generator's reactive load budget. For sites running a 10–15kW generator shared across security and IT equipment, this keeps your generator from hitting reactive capacity limits under combined load.
Deployment Considerations:
- The hardwire input/output configuration means this is a licensed-electrician install — budget for conduit termination and a dedicated breaker sized to the hardwire input spec. This is not a plug-and-play appliance.
- The OL5KRTHD provides 4 AC outlets, which is a relatively small outlet count for a 5kVA frame. Plan on pairing it with a rackmount PDU on the NEMA L6-30P output if you're distributing power to more than four circuit paths.
This unit is the right pick for a security operations center headend room — specifically the scenario where you have a 40–60 camera NVR cluster, a managed switch stack, and a server running VMS software, all of which need conditioned, uninterrupted power with no tolerance for the transfer delays a line-interactive design would introduce.
