CyberPower OL2K2RTHD Online Double-Conversion UPS
Overview
The CyberPower OL2K2RTHD is a 2200VA/1800W online double-conversion UPS built for surveillance racks, network closets, and other mission-critical environments where continuous clean AC is non-negotiable. This 2U rackmount unit delivers sine-wave output with zero transfer time during mains loss — meaning your NVRs, PoE switches, and networked cameras stay powered without a single packet drop or frame loss. The OL2K2RTHD handles brief outages with 3.1 minutes of runtime at full load, enough to gracefully shut down equipment or bridge to generator backup. Unlike offline or line-interactive topologies, online double-conversion continuously rectifies incoming AC to DC, inverts that DC back to AC, and supplies your load from the inverter — eliminating voltage sag, harmonic distortion, and switching transients that can degrade surveillance equipment lifespan.
Key Features
- Online Double-Conversion Architecture: Mains AC is rectified to DC, then inverted to clean 100–125 VAC sine-wave output at all times. This topology shields your NVRs and PoE switches from brownouts, overvoltage, and harmonic noise — critical for 24/7 recording systems where voltage instability causes frame drops or database corruption.
- Zero Transfer Time: When utility power fails, the UPS is already supplying your load via inverter output. No relay click, no momentary gap, no restart cycles on your cameras or recording appliances. This is the core reason online UPS costs more than line-interactive: surveillance equipment cannot tolerate even 4 ms of blackout.
- 2200VA/1800W Capacity: Sufficient to power dual 24-port PoE switches (300W each), a mid-range 8–16 channel NVR (400–600W), and 4–6 IP cameras (60W per unit) simultaneously. Runtime of 3.1 minutes at full load buys you time to activate a generator or perform a controlled shutdown; at half load (900W), the unit delivers 10.3 minutes — extending your bridge window for smaller racks.
- Eight NEMA 5-20R Outlets Plus L5-20R: Seven standard 20A outlets handle most UPS-rated equipment; the dedicated L5-20R outlet (locking connector) is for hardwired loads or future expansion. This outlet layout avoids the common problem of undersized receptacles forcing daisy-chained power strips that void equipment warranties.
- SNMP, USB, Serial, and EPO Management: Integrates with surveillance NMS or data center monitoring via SNMP to log battery events, load transitions, and estimated runtime. USB and serial ports drive PowerPanel Business Edition software for automated alerts and graceful shutdown scripts. EPO (emergency power off) input allows remote or hardwired kill-switch activation — required in secure facilities where power must be cut instantly on alarm.
- Efficiency and Low Noise: ECO mode runs at >96% efficiency, dissipating 176 BTU/hr — meaning minimal heat load in your rack cabinet. Online mode dissipates 497 BTU/hr; audible noise ranges 24.2 dBA (idle) to 57.1 dBA (full load + fan), comparable to a busy server room. This is quieter than many competitors and acceptable for surveillance closets adjacent to office spaces.
- Surge Suppression and Harmonic Control: Built-in 710 J surge suppression protects against lightning transients and switching spikes. Harmonic distortion <5% ensures clean power for sensitive electronics; many facilities with poor upstream conditioning see distortion >8%, which accelerates component failure in NVRs and PoE midspan injectors.
- Sealed Lead-Acid Battery Bank (3 cells): Sealed battery design eliminates maintenance and venting concerns in occupied racks. Three cells support the rated capacity and runtime; replacement batteries are commodity items, reducing long-term cost of ownership compared to proprietary lithium packs.
- Wide Input Voltage and Frequency Tolerance: Input range 100–125 VAC, 40–70 Hz accommodates developing-region or generator-supplied power that drifts outside standard 60 Hz ±3%. Useful for facilities with aging electrical infrastructure or sites served by unstable grid sources; ensures the UPS does not engage battery unnecessarily during mild sag.
- Rackmount Design with Compact Footprint: 2U height (8.64 cm) fits standard EIA racks. Width 43.31 cm and depth 38.0 cm are standard rack dimensions; the 10-foot power cord reaches most facility inputs. Thermal dissipation (497 BTU/hr online) is manageable with passive rack airflow; does not require dedicated cooling in most installations.
Integration & Compatibility
The OL2K2RTHD integrates into surveillance and network infrastructure via dual pathways: hardware management (SNMP trap receiver, USB to NMS appliance, serial to environmental monitor) and software management (PowerPanel Business Edition on Windows/Linux workstations). Optional RMCARD205 remote management card extends SNMP and email alerting capabilities over network, allowing off-site monitoring of battery health and load events. Automatic and manual bypass modes mean if the UPS inverter fails, the unit can pass utility AC directly to your load — a fail-safe that prevents total blackout. The 20 A circuit breaker on the input prevents overload from downstream equipment drawing more than the unit is rated to deliver.
Environmental and Operating Specifications
Operating temperature range 32–104 °F (0–40 °C) with 0–90% non-condensing humidity supports indoor surveillance rack rooms and unheated closets in temperate climates. Operating elevation to 9,843 feet means deployment in mountain data centers without derating. Storage temperature range 5–113 °F and elevation to 49,213 feet enable long-term shelf life without battery degradation. UL1778 and CSA C22.2 No.107.3 certifications confirm North American compliance; FCC Part 15 Class A ratings suit commercial and industrial settings (not residential RFI-sensitive environments).
What's in the Box
Package contents include: 1x CyberPower OL2K2RTHD UPS unit (factory-installed batteries), 1x NEMA 5-20P input power cord (10 feet), 1x USB cable for management software connection, 1x RS-232 serial cable for legacy systems, and printed quick-start and warranty documentation. Remote management card (RMCARD205) is sold separately.
Frequently Asked Questions
Q: What is the warranty on the OL2K2RTHD?
A: Three-year manufacturer warranty covers defects in materials and workmanship. Battery modules typically have a one-year warranty; consult the documentation for specific battery terms.
Q: Can I network-monitor the OL2K2RTHD remotely?
A: Yes. The unit includes SNMP, USB, and serial communication ports. With PowerPanel Business Edition software installed on a management workstation, or with the optional RMCARD205 module, you can send SNMP traps to your NMS and receive email or syslog alerts when battery events occur.
Q: How long will the OL2K2RTHD run my equipment during a power outage?
A: At full load (1800W), approximately 3.1 minutes. At half load (900W), approximately 10.3 minutes. Your actual runtime depends on the total wattage of connected devices. Use the PowerPanel software to estimate runtime for your specific load.
Q: Is the OL2K2RTHD suitable for continuous online mode operation?
A: Yes. Online double-conversion is designed to run continuously. Heat dissipation (497 BTU/hr) is moderate for a 2U rack system. Ensure adequate airflow in your cabinet and monitor internal temperature. ECO mode reduces heat to 176 BTU/hr but sacrifices some voltage regulation capability.
Q: What does the L5-20R outlet do?
A: The locking L5-20R outlet is typically reserved for high-priority equipment requiring guaranteed UPS power, or for future expansion. It uses a twist-lock connector that prevents accidental unplugging, unlike standard NEMA 5-20R receptacles.
Q: Does the OL2K2RTHD include a network card for SNMP monitoring?
A: The unit has a serial port and USB port for SNMP communication via PowerPanel Business Edition software. Network connectivity (Ethernet SNMP) requires the optional RMCARD205 module, purchased separately.
The OL2K2RTHD is the right UPS topology for surveillance racks that cannot tolerate any power transition gap. I specify this unit where the NVR or PoE switch will experience frame loss or database corruption if power dips for more than a few milliseconds — which is nearly every serious surveillance installation. The zero transfer time and online double-conversion architecture mean your cameras and recorder stay powered from a synthetic sine wave, not a relay that clicks every time utility power wobbles. This is not a backup power system; it is always-on conditioning.
Technical Highlights:
- Online Double-Conversion (2200VA/1800W): AC-to-DC rectification followed by DC-to-AC inversion ensures your load never sees utility power directly. Eliminates harmonic distortion (< 5% THD) and voltage sag that can cause NVR frame drops or PoE switch reboot loops. The inverter output is always clean sine wave, whether mains is present or not.
- Zero Transfer Time: Because your equipment is already powered from the inverter, there is no switching delay when utility fails. Many line-interactive UPS units introduce 4–10 ms transfer lag; I have seen this trigger watchdog resets on certain NVR models and cause one-frame glitches in continuous recording.
- 3.1 Minutes Full Load / 10.3 Minutes Half Load Runtime: Enough to trigger a graceful shutdown script or activate your backup generator before batteries are exhausted. If your PoE switches and NVRs draw 1200W total, you are looking at roughly 4–5 minutes of runtime — sufficient bridge time in most data center or facility scenarios with generator auto-start.
- SNMP and PowerPanel Integration: Trap-capable SNMP means your monitoring platform sees battery events in real time. PowerPanel Business Edition can execute shutdown scripts on your NVR and PoE equipment in a controlled sequence — preventing corruption that happens when power is simply yanked.
- Sealed Lead-Acid Battery (3 cells): Maintenance-free and non-hazardous in occupied racks. Three sealed cells deliver rated capacity; batteries are field-replaceable and commodity-sourced, so you are not locked into a proprietary form factor five years from now.
Deployment Considerations:
- Heat dissipation in online mode (497 BTU/hr) is manageable in standard rack cabinets with passive airflow, but do not skip ventilation — especially if your room temperature runs above 75 °F. Monitor internal UPS temperature via serial log or SNMP if your management platform supports it.
- Battery capacity varies with load. A 24-port PoE switch (300W) plus a 16-channel NVR (500W) plus four cameras (240W) = 1040W total, yielding roughly 5 minutes of runtime. If you have more cameras or a larger NVR (e.g., 32-channel at 800W+), you will be in the 3–4 minute window. Know your actual load and test runtime under real conditions before relying on the bridge.
- The 10-foot power cord is adequate for most rack-to-PDU distances, but verify your facility layout. Extension cords degrade voltage delivery; avoid them if possible.
- The optional RMCARD205 (network card) is worth the investment if you are running a distributed facility or cloud-based monitoring platform. Without it, you are limited to local USB/serial management unless you daisy-chain a separate remote monitoring device.
Specify the OL2K2RTHD for surveillance racks where NVR availability and recording continuity are non-negotiable. The zero-transfer-time topology justifies the cost versus cheaper line-interactive alternatives. Pair it with a backup generator set to auto-start at 80% battery discharge, and you have eliminated the risk of uncontrolled shutdown from grid events.
