The principle of classification time delay relay off delay

       Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. 

    China sprocket manufacturer, Specialist in: European Series Sprockets, American Series Sprockets, Japan Series Sprockets. Standard Sprocket, Tyre Coupling,Sprocket for Conveyor Chain,Conveyor Chain,Taper Lock Sprocket, Stainless Steel Sprocket, Cast Iron Sprocket, etc.

     The principle of classification

     Off delay

    1 Introduction: power-off delay relay for AC operation of relay protection and automation, as AC (DC) time element powerinstantaneous power delay return;

    2 Technical requirements:

   1), delay range: 0.02-5.00S, 0.01S, 0-999S, differential 1S level;

   2), action: action DC voltage should be less than 70% of rated voltage, rated voltage should be not greater than 80% exchange;

Timing belts

   3), contact capacity: in voltage does not exceed 250V, current shall not exceed 1A, the time constants for the 5MS ± 0.75MS DCinductive load circuit, contact breaking capacity of not less than 50W; the voltage does not exceed 250V, the current is less than 5A, power factor of AC circuit COS φ =0.4 ± 0.1, disconnectcapacity of not less than 500VA. Contacts can act reliably and return of not less than 50000 times in the prescribed loading conditions. Contact allowed on current is not less than 5A.

   4), power consumption: the rating of not more than 5W/7VA.

   5), insulation performance: the same pay off point between thepressure of not less than 1KV/50Hz for power frequency withstand voltage for 1 minutes. Different groups of contactsbetween different loop, is not less than 2KV/50Hz for power frequency withstand voltage for 1 minutes. Shake table testing ofshell with arbitrary terminal 1KV, the insulation resistance of not less than 100M.