Checkout Current Transformers (CTs) and check resistance across each one while it is disconnected. All resistances should be within 10% of one another. Also do a diode test on the CT inputs on each compressor module. (The diode test is described in RTAA-SVB10B-EN.)
[pdf] Screw air compressors are positive displacement compressors that rely on the rotation of intermeshing spiral rotors (male and female) to compress gas. Their key advantages include: High efficiency & reliability – Continuous, pulsation-free air supply with stable flow rates.
[pdf] Sullair is the world's largest manufacturer of rotary screw air compressors. It was founded in 1965 and headquartered in Michigan City, Indiana, USA. As a pioneer in the compressor field, Sullair's manufa.
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