Permanent Magnet Variable Frequency Rotary-screw Air Compressor

Unique Variable Frequency Control technology

The rotor speed is continuously adjusted within a large range of large rotor low ratio power, automatically matching the changes in gas volume at the gas consumption point, and the pressure fluctuation is controlled within ±0.01MPa; there is almost no energy loss caused by pressure increase.

It saves 45% of no-load power consumption to reduce the energy loss caused by no-load state.

High-performance Variable Frequency Device, small starting impact, avoiding starting overload.

Specially designed VFD control cabinet, large size, optimal ventilation design, the ambient temperature reaches 45C and the performance is still running.

pressure can be customized below or above 8 Bar Available

Parameters 

Model 8 Bar	Volume Flow	Power	Noise	Outlet Pipe Diameter	Overall Dimension mm			Weight
	m³/min	KW	dB		L	W	H	KG
JF-10HP	1.2	7.5	60	1/2	900	600	830	122
JF-15HP	1.6	11	63	3/4	1100	705	1000	206
JF-20HP	2.3	15	63	3/4	1100	705	1000	206
JF-30HP	3.6	22	65	1"	1250	850	1100	286
JF-40HP	5.3	30	65	1"	1250	850	1100	305
JF-50HP	6.2	37	65	1-1/2	1250	980	1240	440
JF-60HP	8	45	66	1-1/2	1250	980	1240	480
JF-75HP	10.1	55	66	RP2	2100	1360	1650	850
JF-100HP	13.6	75	67	RP2	2100	1360	1650	1000
JF-120HP	16.1	90	67	RP2-1/2	2525	1565	1900	2400
JF-150HP	21.2	110	68	RP2-1/2	2525	1565	1900	2500
JF-175HP	24.5	132	68	DN80	2810	1750	2050	2850

PRODUCT FEATURES

ENERGY SAVING

Ultra-low frequency speed control technology enables the motor operating frequency of MAYA rotary-screw air compressor 15Hz lower than that of ordinary variable frequency rotary-screw air compressors. It truly achieves constant pressure variable operation without no-load, minimizing the loss of useless work.

HIGHRE LIABILITY

The variable frequency device soft start avoids the impact of power grid shocks and the impact on the machine itself. It eliminate the disadvantages of long-term high-speed operation of the unit and does not require a power frequency device. There is no contactor, which eliminates contactor failure; Although leakage always exists in the air application system, the application of VFD eliminates the 0.2Mpa excessive air pressure, reduces the probability of system leakage, which is a 25% reduction in leakage compared with no application.

QUIET & ENVIRONMENT FRIENDLY

Advanced Vector Variable Frequency Control reduces vibration and noise of the unit, and it can be used at the gas consumption site without the need for a dedicated machine room, saving land space and the additional cost of installing external pipe networks; the exhaust oil content is less than 3PPm, which does not pollute the environment. vector Variable Frequency Control reduces vibration and noise of the unit, and it can be used at the gas consumption site without the need for a dedicated machine room,saving land space and the additional cost of installing external pipe networks; the exhaust oil content is less than 3PPm, which does not pollute the environment.

SAVE 30% ELECTRICITY & IMPROVE OPERATION LIFE

The unique Ultra-low Variable Frequency Control Technology is combined with the compressor motor frequency conversion technology to form a full Variable Frequency Control of the variable frequency rotary-screw air compressor, which further achieves energy saving. Compared with the power frequency screw machine, electricity can be saved by more than 30%, while extending the service life of the lubricating oil and the unit.

Energy saving examples

31% POWER OFF

An example of energy saving of permanent magnet synchronous inverter(PSMI) on rotary-screw air compressor: The average gas output of a 37KW ordinary screw air compressor is only 75% of the rated exhaust volume.

Note: The model purchased by the user can produce 6 cubic meters of gas, but the actual average gas consumption is only 75% ,that is about 4.5 cubic meters. If it runs 6,000 hours a year, and the electricity fee is counted by kW·h.

The calculation is as follows: The ordinary machine will produce three losses:

1.No-load loss, 2.Pressure difference loss. 3.Motor efficiency loss.

It is well known that the 37-kilowatt ordinary screw compressor has an inherent service factor of 1.2. 37 kilowatts actually refers to the output shaft power (actual load power),and the unit input power should be about 45 kilowatts!

No-load loss energy saving formula:

No-load loss = 25% unloading time x no-load current loss ( 45%)

No-load loss = 0.25x (0.45x45x6000)= 30375kW·h/year

Pressure difference loss energy saving formula:

Pressure difference loss = 75% loading time x 2 bar pressure difference loss ( 14%)

Pressure difference loss = 0.75x (0.14x 45x 6000)=28350kW·h/year

Motor efficiency loss formula: 37KW permanent magnet motor efficiency is about 5% greater than the efficiency of ordinary induction motors.

Motor efficiency loss = 45x 6000x 0.05= 13500kW·h/year

Total electricity savings = 30375 + 28350 + 13500 = 72225 kW·h/year

The power consumption of an ordinary compressor = 75% (loading time)x 45x 6000 = 202500kW·h/year + 25% (idle time)x 0.45x 45x 6000=30375kW·h/year)=232875kW·h/year

Power saving rate = 72225 / 232875≈ 31%

Conclusion: After using PSMI, the electricity bill Is effectively reduced by 31%!