Zingfa QL3-74 hermetic compressor
3 HP three-phase piston compressor for R448A, R449A, R452A and R404A. Also listed as Xingfa QL3-74 and Ankang QL3-74.
- Rated at −23.3 °C evaporating, +54.5 °C condensing
- 4,135 W
- Three-phase
- 3 HP
- POE, 1,500 mL
- R404A
Specifications from the datasheet
General
- Rated refrigerant
- R404A
- Nominal power
- 3 HP
- Displacement
- 74.25 cc
- Oil
- POE, 32 cSt
- Oil charge
- 1,500 mL
- Rated speed
- 2,900 rpm
- IP class
- IP21
Rated performance
- Cooling capacity
- 4,135 W / 14,100 BTU/h
- Input power
- 2,060 W
- COP
- 2 W/W
- Rated run current
- 3.2 A
- Sound power
- ≤ 65 dB(A)
- Evaporating temperature
- −23.3 °C
- Condensing temperature
- +54.5 °C
- Suction temperature
- +32 °C
- Liquid subcooling
- 22.2 K
- Ambient temperature
- +32 °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
- 3.3 Ω
- Locked rotor current
- 36 A
- Insulation class
- F
Connections
- Suction
- 1 1/4"-12 UNF
- Discharge
- 1"-14 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 32 °C return gas and 0 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 |
|---|---|---|---|---|---|---|---|
| −40 °C | 1,629 | No value published | No value published | No value published | No value published | No value published | No value published |
| −35 °C | 2,458 | 2,304 | 1,989 | No value published | No value published | No value published | No value published |
| −30 °C | 3,490 | 3,308 | 2,938 | 2,562 | 2,373 | 1,997 | No value published |
| −25 °C | 4,747 | 4,533 | 4,097 | 3,653 | 3,430 | 2,985 | 2,547 |
| −20 °C | 6,251 | 6,001 | 5,491 | 4,971 | 4,710 | 4,189 | 3,680 |
| −15 °C | 8,027 | 7,736 | 7,144 | 6,542 | 6,239 | 5,638 | 5,056 |
| Evaporating / Condensing | 30 °C | 35 °C | 40 °C | 45 °C | 50 °C | 55 °C | 60 °C |
|---|---|---|---|---|---|---|---|
| −40 °C | 1,147 | No value published | No value published | No value published | No value published | No value published | No value published |
| −35 °C | 1,431 | 1,415 | 1,388 | No value published | No value published | No value published | No value published |
| −30 °C | 1,746 | 1,733 | 1,714 | 1,703 | 1,702 | 1,705 | No value published |
| −25 °C | 2,090 | 2,081 | 2,073 | 2,075 | 2,081 | 2,100 | 2,131 |
| −20 °C | 2,463 | 2,460 | 2,464 | 2,482 | 2,496 | 2,534 | 2,586 |
| −15 °C | 2,864 | 2,868 | 2,888 | 2,923 | 2,947 | 3,006 | 3,082 |