48v 18cc Electric AC Compressor - 3 Speed 3.3/3.8/4.5k
A fully electric 48v Air Conditioning Scroll Compressor with PWM speed control. These compact units are ideal for installation into applications where belt drives are not available or space is at a premium. This compressor is very simple to wire in, and can be operated with a PWM Controller.
| Performance | Metric | Imperial & Other |
| Refrigerating Capacity (3000rpm) | 1.38 kw | 4.7 K Btu/hr |
| Electrical Consumption | 0.74 kw |
| Current @ 48 VDC | 15.4a |
| Refrigerating Capacity (4000rpm) | 1.89 kw | 6.4 K Btu/hr |
| Electrical Consumption | 0.99 kw |
| Current @ 48 VDC | 20.6a |
| Refrigerating Capacity (4500rpm) | 2.15 kw | 7.3 K Btu/hr |
| Input Power | 1.15 kw |
| Current @ 12 VDC | 96.0A |
| Operating Range | Metric | Imperial & Other |
| Evaporator Temperature | -17 °C ~ 21 °C | 2 °F ~ 70 °F |
| Condenser Temperature | 25 °C ~ 75 °C | 77 °F ~ 167 °F |
| Start Temperature | -32 °C ~ 70 °C | -26 °F ~ 158 °F |
| Working Temperature | -32 °C ~ 100 °C | -26 °F ~ 212 °F |
| Storage Temperature | -40 °C ~ 105 °C | -40 °F ~ 221 °F |
| Motor Overheat Protection | 100 °C | 212 °F |
| Refrigerant | R134a, R1234YF |
| Operating Voltage Range | 35 - 65 VDC |
| Maximum Mounting Rotation | 8° |
| Maximum Mounting Tilt | 5° |
| Compressor Parameters | Metric | Imperial & Other |
| Discharge Capacity | 18.0 cc/rev | 1.10 ci/rev |
| Weight | 5.4 kg | 11.9 lbs |
| Safety Valve Pressure | 4.0 Mpa | 580 psi |
| Compressor Oil Capacity | 100 cc Zerol Ester 68SL Oil |
| Refrigerant Capacity | 500g |
| Compressor Speed Range | 2000 - 4500 rpm |
| Protection Rating | IP67 |
| Part Number | 279-81F-880 |
This electric AC Compressor is very simple to wire in, with 2 Looms in total; one for power and one for control two rocker switches or a 4 position rotary switch required to control the compressor speed.
| Port | Wire Colour | Definition |
| Power | Orange | 48v DC positive input |
| Earth | Orange | 48v DC negative input |
| Port | Wire Colour | Definition |
| 12v Positive | Red | 12c DC positive input |
| 12v Negative | Black | 12v DC negative input |
| STB | Brown | - The AC start-stop enable signal input, high level or floating is closed (OFF), low level is open (ON).
- Input level range: high level range 5-15v DC, 15mA; low level range 0-0.8v DC, 22mA
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| PWM In | Grey | - Air conditioner speed control signal input, the signal frequency is 1kHz PWM duty cycle signal.
- Input level range: high level range 5-15vDC, 20mA; low level range 0-.08vDC, 15mA.
- Speed adjustment range: 2000-6000 rpm, corresponding to PWM duty cycle 5%-95% linear change.
- 2000rpm corresponds to positive duty cycle of 5% and 6000rpm corresponds to positive duty cycle of 95%.
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