Very quiet and clean to operate, the Cummins Onan RS20000 Home Standby System is designed to be neighborhood friendly. The system is fully automatic when used with a Cummins Onan Automatic Transfer Panel, eliminating the need for human intervention. Powered by a heavy-duty GM Industrial engine, this system conveniently connects to your home's liquid propane source. Rest assured that RS20000 home standby generator will give you power when you unexpectedly need it most.
Features:
- Attractive and discreet housing
- Aluminum weather resistant housing
- High quality commercial grade materials
- Fully automatic operation when used with a Cummins Onan Automatic Transfer Panel
- Lockable access doors
- Self-diagnostic capability
- Modest maintenance requirements
- Electronic governor for precise frequency control
- Includes 120V coolant heater
- Listed to UL2200
- Standard 150 mph certified wind load rating
- Fully enclosed muffler
- Insulated heat shield
- Very quiet operation - 66 dB(A) at 7 m
- Design: brushless, revolving field, single bearing, 4-pole, drip-proof construction
- Insulation system: Class H per NEMA MG1-1.65 and BS2757
- Temperature rise: At rated load is less than 125°C at standby rating, perNEMA MG1.22.40, IEEE 115 and IEC 34-1
- Excitor type: The excitation system derives is a self (shant) excited system with the voltage directly from the generator set output.
- Alternator Cooling: Direct-drive centrifugal blower
- Rotor: Supported by a pre-lubricated, maintenance-free ball bearing
- AC Wave form total harmonic distortion: less than 5% total no load to full load
Engine Features:
- Electronic ignition
- Electronic governor
- Full pressure lubrication
- High-capacity oil sump, spin-on filter
- Solenoid shift starter
- 60-Amp, engine-driven battery charger
Engine Specifications:
- GM Industrial, spark-ignited engine
- In-line 4-cylinder, liquid-cooled design
- Compression Ratio: 10:5:1
- Displacement: 181 cu in (3.0 cc)
- Cooling system: 127°F (53°C) ambient cooling system
- Oil sump capacity: 4.5 qt (4.3 L) with filter
- Operating speed: 1800 rpm
Control System Features:
- Automatic remote starting
- Controls generator set starting and shutdown
- Control components designed to withstand the vibration levels typical in generator sets
- Field circuit breaker
- High temperature, low oil pressure, overcrank and overspeed shutdown
- Running time meter
- 90-Amp, UL-listed circuit breaker
- DC control fuse
- Time delay start / stop
- Battery condition meter
Specifications:
- Running (rated) watts: 20,000
- kVa: 25
- AC Voltage: 120 / 240 VAC, 1.0 pf
- Voltage regulation: +/- 1%, no load to full load
- Rated Amperage: 83.3
- Circuit breaker: 90-amp, 2-pole
- Frequency regulation: Isochronous, 0% no load to full load
- Random frequency variation: +/- 0.5% @ 60 Hz
- Operating temperature range: -10°F (-23.3°C) or -20°F with optional coolant heater to 104° (40°C)
- Sound level: 66 dB(A) at 23 ft (7 m), average
- Footprint dimensions (for recommended installation): 64.4" L x 30" W x 46.7" H
Transfer Switch:
The Cummins Onan RSZ Automatic Transfer Panel combines reliability and flexibility in a small, economical package. This system is specifically designed for transferring loads between the utility power and generator set. This panel should be professionally installed to your utility power and Onan generator. Designed for residential or light commercial settings, this transfer switch automatically activates your Cummins Onan standby generator when the power goes out.
NEMA3R - 2 Pole, 200 Amp Switch
- 200 Amp mode
- UL 1008 listed / CSA-approved
- Mechanically interlocked contactor
- Fully automatic control
- Automatic 1.25-Amp regulated battery charger
- NEMA 3 enclosure
NEMA1 - 2 Pole, 200 Amp Switch
- 200 Amp mode
- UL 1008 listed / CSA-approved
- Mechanically interlocked contactor
- Fully automatic control
- Automatic 1.25-Amp regulated battery charger
- NEMA 1 enclosure
Specifications Sheets:
RS20000
Guide to RSZ Series Automatic Transfer Panels
Guide To Home Energy Power Solutions
Home Preparedness Brochure
