DLS Power Supply

DT-3 is used for temperature protection of transformers, or dc generators, and motors, usually rated 1 000 horsepower or more.

The DT-3 relay is an adjustable contact-making ac or dc milliammeter, calibrated in degrees Centigrade. The relay operates to initiate an alarm or tripping function (most commonly through an auxiliary type SG or MG-6 relay) when the stator temperature o( the protected machine reaches the temperature setting of the relay. The relay is applied as the center leg of a Wheatstone dc energized bridge circuit consisting of balancing resistors within the relay and a temperature search coil embedded in the stator of the machine.

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  • Long production life, ease of application and reliable protection
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