Zingfa QR3-145 hermetic compressor
8 HP three-phase piston compressor for R448A, R449A, R452A and R404A. Also listed as Xingfa QR3-145 and Ankang QR3-145.
- Rated at +7.2 °C evaporating, +54.5 °C condensing
- 20,220 W
- Three-phase
- 8 HP
- POE, 2,000 mL
- R404A
Specifications from the datasheet
General
- Rated refrigerant
- R404A
- Nominal power
- 8 HP
- Displacement
- 145 cc
- Oil
- POE, 32 cSt
- Oil charge
- 2,000 mL
- Rated speed
- 2,900 rpm
- IP class
- IP21
Rated performance
- Cooling capacity
- 20,220 W / 68,900 BTU/h
- Input power
- 7,940 W
- COP
- 2.6 W/W
- Rated run current
- 12.9 A
- Sound power
- ≤ 65 dB(A)
- Evaporating temperature
- +7.2 °C
- Condensing temperature
- +54.5 °C
- Suction temperature
- +35 °C
- Liquid subcooling
- 8.3 K
- Ambient temperature
- +35 °C
Electrical
- Motor
- Three-phase
- Motor poles
- 2
- Power supply, 50 Hz
- 380-400 V 3~ 50 Hz
- Power supply, 60 Hz
- 460 V 3~ 60 Hz
- Winding resistance at 25 °C
- 2 Ω
- Locked rotor current
- 70 A
- Insulation class
- F
Connections
- Suction
- 1 3/4"-12 UNF
- Discharge
- 1 1/4"-12 UNF
- Process tube
- Ø7 ±0.2 (ID), Ø10 (OD)
Operating limits
- Tightness test pressure
- 2.2 MPa
- High side max running pressure
- 3.2 MPa
- Low side max running pressure
- 2 MPa
- Discharge temperature limit
- ≤ 125 °C
- Protection
- Internal motor protector, internal pressure relief
Performance at 50 Hz by duty point
R404A values from the manufacturer datasheet, with 35 °C return gas and 8.3 K subcooling. Rated values above can differ from these tables.
| Evaporating / Condensing | 30 °C | 35 °C | 40 °C | 45 °C | 50 °C | 55 °C | 60 °C |
|---|---|---|---|---|---|---|---|
| −20 °C | 8,866 | 8,397 | No value published | No value published | No value published | No value published | No value published |
| −15 °C | 11,750 | 11,204 | 10,067 | 8,882 | No value published | No value published | No value published |
| −10 °C | 15,208 | 14,558 | 13,198 | 11,779 | 11,051 | 9,579 | No value published |
| −5 °C | 19,328 | 18,543 | 16,905 | 15,192 | 14,312 | 12,526 | 10,731 |
| 0 °C | 24,196 | 23,251 | 21,279 | 19,217 | 18,158 | 16,006 | 13,838 |
| 5 °C | 29,905 | 28,772 | 26,415 | 23,954 | 22,692 | 20,128 | 17,546 |
| 10 °C | 36,549 | 35,206 | 32,418 | 29,516 | 28,031 | 25,015 | 21,990 |
| Evaporating / Condensing | 30 °C | 35 °C | 40 °C | 45 °C | 50 °C | 55 °C | 60 °C |
|---|---|---|---|---|---|---|---|
| −20 °C | 3,715 | 3,744 | No value published | No value published | No value published | No value published | No value published |
| −15 °C | 4,285 | 4,341 | 4,421 | 4,453 | No value published | No value published | No value published |
| −10 °C | 4,857 | 4,942 | 5,079 | 5,170 | 5,195 | 5,209 | No value published |
| −5 °C | 5,428 | 5,544 | 5,743 | 5,894 | 5,951 | 6,024 | 6,042 |
| 0 °C | 5,998 | 6,146 | 6,410 | 6,625 | 6,713 | 6,849 | 6,929 |
| 5 °C | 6,565 | 6,748 | 7,080 | 7,362 | 7,482 | 7,685 | 7,831 |
| 10 °C | 7,127 | 7,347 | 7,749 | 8,102 | 8,258 | 8,530 | 8,744 |