The CyberPower Systems CPS900AVR UPS provides battery backup (using simulated sine wave output) and surge protection for desktop computers, workstations, and personal electronics. The CPS900AVR uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently. The CPS900AVR comes with a three-year warranty (including coverage of batteries) and a $250,000 Connected Equipment Guarantee.
|UPS Topology||Line Interactive|
|Frequency||60Hz ± 3Hz|
|Plug Type||NEMA 5-15P|
|Plug Style||Right Angle|
|Automatic Voltage Regulation||Yes|
|On Battery Voltage||120Vac ± 5%|
|On Battery Frequency||60Hz|
|On Battery Waveform||Simulated Sine Wave|
|Outlet Type||NEMA 5-15R|
|Outlets - Battery & Surge Protected||6|
|Outlets - Surge-Only Protected||3|
|Outlets - Widely Spaced||3|
|Overload Protection||Internal circuitry limiting / circuit breaker|
|Run Time||30 - 65 minutes|
|Battery Type||Sealed Lead-Acid|
|Replacement Battery||BB Battery - BP7-12|
|Surge Protection & Filtering|
|Surge Suppression||1,500 Joules|
|Maximum Surge Current||36,000 Amps|
|Phone Protection RJ11||1-In, 2-Out|
|Management & Communications|
|Cable Management||Serial Cable|
|LED Indicators||Power On, Wiring Fault, Using Battery, AVR, Overload|
|Audible Alarms||On Battery, Low Battery, Overload|
|Operating Temperature||32 °F to 95 °F / 0 °C to 35 °C|
|Operating Humidity||0% - 95% non-condensing|
|Safety||UL1778, cUL, FCC DOC Class B|
|Product Warranty||3 Years Limited|
|Connected Equipment Guarantee||Lifetime|
Automatic Voltage Regulation (AVR) in line interactive UPS systems stabilizes the incoming AC signal to maintain output power at a nominal 120 volts by controlling high and low voltages without resorting to battery power. This significantly increases battery life and lessens the likelihood of data loss, memory freezes, and system crashes.
How AVR Works in a Line Interactive UPS
A line interactive UPS includes an AVR autotransformer—a special type of transformer designed to switch between powered coils of wire in response to variances in utility power input, thereby increasing or decreasing the magnetic field and the resulting output voltage to connected equipment.
This type of UPS tolerates undervoltage brownouts and overvoltage surges without consuming backup battery power by automatically selecting different power taps on the AVR autotransformer. During normal operation, incoming AC power bypasses the autotransformer (where voltage highs and lows are controlled) while also charging the battery. When the incoming voltage falls below the AVR range, the UPS switches to battery backup, and the DC-AC inverter circuitry is engaged. Power will continue to be supplied by the battery-inverter circuit until incoming voltage returns to the range manageable by the AVR.
A transformer converts alternating current line voltage to a higher value or a lower value. Transformers rely upon electromagnetic induction, the process which occurs when the alternating current within a circuit generates current in a nearby circuit.
Transformers vary in design and size, as well as using different amounts of current. Small transformers plug into a wall outlet and create low direct current voltages which are used by common electronic devices. Transformer outlets are more widely spaced than other outlets to accommodate transformer block adapters or other adapters that are large in size. Transformer outlets can be used to connect any appropriate device to a surge protector.
|Model||Output VA||Output Watts||Outlets||MSRP|
|CP685AVR||685 VA||390 W||8 NEMA 5-15R||$79.95|
|AVRG750U||750 VA||450 W||12 NEMA 5-15R||$89.95|
|CP800AVR||800 VA||450 W||8 NEMA 5-15R||$99.95|
|AVRG900U||900 VA||480 W||12 NEMA 5-15R||$109.95|
|CP900AVR||900 VA||560 W||8 NEMA 5-15R||$119.95|
|CP1200AVR||1200 VA||720 W||8 NEMA 5-15R||$149.95|
|CP1500AVRT||1500 VA||900 W||8 NEMA 5-15R||$199.95|