D P L
DD-11 grounding relay
product description:
The Type DD-11 grounding relay is used for grounding the low current system as the grounding zero-order overcurrent protection for the high voltage three-phase alternator and motor.
Product characteristics:
The relay is the DT-1 grounding relay into the transparent housing, through the relay can be clearly observed through the cover.Its action principle is the same as its technical data.
The relay is an electromagnetic overcurrent relay with transient action.The conductor of the relay is made of silicon steel sheets, equipped with two coils are belonging to the working principle of the electromagnetic relay.
Since the relay is required for grounding protection in the grounding small current system, in the two coils, the compensation coils are closed in series by the capacitor (C=0.47 F) to compensate the retance of the magnetized coil, reduce the power required to generate the same magnetic flux in the conductive magnet, improve the sensitivity of the relay and reduce the loss.
The relay can be used in series or in parallel by changing the terminal wiring and has a dynamic closing contact.
The internal wiring of the relay is shown in the following figure, and the shape and installation dimensions are shown in Dimensions H02A and H02B.
