By adding time delayer and modifying the filter element, the cleaning frequency and the cleaning water usage for the powder recovery filter are reduced, and thus safe, stable and economic operation of ABS Plant are ensured.

The application of self-excitation delay relay in the breaker stored energy electromotor control loop;

This paper introduces an improving design of CA6140 machine tool′s control circuit by delay relay.

Development of Φ60 mm hydraulic chronotron and its application to TCP perforation in horizontal wells;