Generally, according to the machine gas production 10-20% to choose, or according to the customer terminal gas consumption 120% to choose, there is no fixed value, air compressor tanks play the role of cooling, buffering, sewage, so, greater pressure fluctuations can be appropriately increased, Climate hot areas (Middle East, North Africa, etc.) can be appropriately increased.

Power frequency; in addition to 7.5 kW is a direct start, more than 7.5 kW power frequency using star triangle start, power frequency also has soft start (SOFT START) mode, need to be equipped with soft starter. Frequency conversion: frequency conversion start, in fact, is also a soft start mode, frequency converter start is to change the frequency of the start mode, starting torque is large, the soft-start is decompression start, not suitable for large load system.

Compared with power frequency, the frequency conversion machine has many advantages. It can reduce impulse current and prolong motor life. It can adjust the motor frequency according to actual gas consumption and save up to 30% of electric energy. Can provide pressure stable air for gas equipment, the disadvantage is high cost, maintenance cost.

There are generally IP23,IP55/IP65, power frequency IP23/IP55, our company generally choose IP55, one air-cooled frequency conversion only IP23, split frequency conversion general choice, and oil-cooled motor (are one), belong to the IP65.

We generally configure air dryer power supply belongs to 220 v50hz, single-phase electricity, some countries 220 v60hz, but belong to three-phase electricity, receive single-phase words is 127 v or so, can not use, so encounter voltage grade and China is different customer, want to inquire clearly, What is the voltage level? The air dryer is to single-phase, dual-phase or three-phase.