May be established to limit the AC power input if power intake is a concern because of highest energy desire or just to minimize the ability consumption for financial price savings. In case your energy resource is indigenous 48V DC as Component of a telecom or off grid solar application, https://israeliquyd.idblogmaker.com/32458284/how-much-you-need-to-expect-you-ll-pay-for-a-good-off-grid-solar-air-conditioners-vic