High-performance EI28 Low-frequency Transformer Unit

The "standard configuration" of professional maintenance vehicles What is the most important thing in the toolbox of an air conditioner repairman? Apart from the tools, there is also the EI28 Safety isolation transformer! It is of moderate size (EI28 core), reasonable weight and sufficient power (commonly 0.5-1kVA), and is specially designed for mobile maintenance. Why is it standard?Hard safety requirement: Direct contact with live air conditioning circuits (especially the main boards of indoor and outdoor units) must be isolated by both regulations and conscience! This is the bottom line of Safety isolation.Isolation leads to repair: Once connected, the circuit ends touched during maintenance are "floating", greatly reducing the risk of electric shock. The technicians feel at ease and the customers are reassured.Basic protection: It can also filter out some grid noise to prevent damage to sensitive components due to voltage fluctuations during maintenance.This isolation transformer m…