General

When installed on low-voltage wire of transformer, TOA can prevent possible damages from overload caused by seasonal or drastic change in electricity load with a visual and audio alarm system. 

 
Features

• Changeable settings to match the capacity of transformer using 22.9kV electric distribution line

• Visual and audio alarm

• Automatic return method

• Self charging with electrical power induced by electric current load; no need to use extra power source

• Designed for convenient use
  

Specification

• Operational temperature range : -25~50℃

• Acceptable error range : less than ±5% of the load value calculated using each transformer capacity(10, 15, 20, 30, 50, 75, and 100kVA) and secondary circuit voltage(110V, 220V) value

• Provided with more than 1 dry contact (one contact point)

• Indicates load status based on the corrected electric current value

• At or above 80% of transformer load for over 5 minutes, green light turns on.

• At or above 80% of transformer load for over 5 minutes, red light turns on and the buzzer sounds.

• Sound-level of signal: approx. 85±5dB (simple sound or complex sound with multi-tone)