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How the Phase failure ,Overvoltage and under voltage function works on RM22TR33 relay.
Example :
At 415V, Tt = 30s
>U = 30% (30% of 415V)
<U = -30% (-30% of 415V)
Phase failure + Sequence of phase L1/L2/L3
During phase loss, where the L1/L2/L3 voltage drop to 0V or open circuit. The output relays of the product will trip immediately.
The relay trip immediately as well when one of the 3 phase voltages drop to 30% below Un.
PSF.JPG

Overvoltage and undervoltage
The product initiate Tt timing when the L1 or L2 or L3 voltage increase/decrease slowly above/below the >U / <U threshold level.

Phase failure and phase sequence are critical failure, therefore the product trip immediately to prevent other equipment failure. For non-critical failure, for example the overvoltage/undervoltage. End user can configure the require Tt timing
CONV.JPG

Schneider Electric India

How the Phase failure ,Overvoltage and under voltage function works on RM22TR33 relay.
Example : 
At 415V, Tt = 30s
 >U = 30% (30% of 415V)
 <U = -30% (-30% of 415V)
Phase failure + Sequence of phase L1/L2/L3
During phase loss, where the L1/L2/L3 voltage drop to 0V or open circuit. The output relays of the product will trip immediately.
 The relay trip immediately as well when one of the 3 phase voltages drop to 30% below Un.
PSF.JPG

Overvoltage and undervoltage
The product initiate Tt timing when the L1 or L2 or L3 voltage increase/decrease slowly above/below the >U / <U threshold level.
 
Phase failure and phase sequence are critical failure, therefore the product trip immediately to prevent other equipment failure. For non-critical failure, for example the overvoltage/undervoltage. End user can configure the require Tt timing
CONV.JPG
 

Schneider Electric India

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