ESS Electronic Soft Start

Electronic compressor starter unit

Available as option for: HG(HA)22P, 34P HG(HA)4, 5, 6 HG7

The start process uses an electronic soft start unit, instead of the conventional start unloader through the bypass solenoid valve, non-return valve and star-delta protector combination. This means that the compressor gets up to its nominal speed in a set time and therefore produces much lower power peaks than the classical star-delta start.
The unit is designed to fit into a switch cabinet.

The advantages:

• Soft compressor start from zero to nominal speed, time controlled and monitored
• Up to 40 % lower start-up power consumption than when using star-delta start
• No star-delta protection combination needed, no bypass between pressure and suction side needed
• No solenoid valve or non-return valve needed. No compressor damage resulting from malfunction of the start unloader