Type     Rated voltage(VAC) Over voltage set(VAC) Under voltage set(VAG)
TVR-3810            380                   418                        342
TVR-3812            380                   428                        333
TVR-3815            380                   437                        323

Characteristics of protection
1) Dynamic/static chopping phase protection:it means that any one phase occurs chopping phase when the protected circuit is in running or stopping status.in this  case,the red indicator light will ve lighted.Be priority.

2) Reversed phase protection:it is a safeguard acting immediately,which protects L1,L2,and L3 three phase against wrong connection sequence.In this case,the red indicator light will be lighted.

3) Over voltage protection:It means the voltage of the protected circuit is higher than set value. in this case,the yellow indicator light will be lighted.

4) Under voltage protection:it means the voltage of the protected circuit is lower than set value.In this case,the yellow indicator light will be lighted.

5) voltage imbalance protection:While a protection of voltage imbalance rate,the imbalamce of three phase voltage will affect the safe rumming of circuit.Inthis case,if there is a phase loses,the red indicator light will be lighted.Be priority.

6)Delay protection: The monitor will act after 0.5-2 seconds and relay releases.(Except reversed phase protection)

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