DE697570C - Relay or trip device - Google Patents

Description

Relay or trip device The invention relates to a with a small overcurrent with delay and with a large overcurrent or short-circuit current relay or relay operating without delay. Trigger servo @ direction with one of the electric motor to be monitored and a timer.

Delayed relays or releases are known in which the delay time is determined by the running of a timer, which is excited by a monitored current Is motor driven. When b.b. Exceeding an adjustable short-circuit current is in these known arrangements, especially for overcurrent tripping, the Immediate release caused by special auxiliary anchors.

In contrast, the invention proposes the kupp, elbaren with the time mechanism To hold the motor by an adjustable counter torque, which the motor only at high overcurrents for the purpose of immediate response of the relay overcomes while in the case of small overcurrents, the counter-torque is canceled by the response element of the relay and -the motor is coupled to the timer for the purpose of delayed response of the relay will.

The motor shaft is here advantageously with the one acting on it. Retaining member for the motor coupled via a toothing, whereby the retaining member @ ed is lifted radially from the motor shaft in the event of a delayed release and in the event of an undelayed release Triggered by the furniture receives a tangential movement. Appropriately takes effect here the retaining member for the motor on em-er from the motor, driven shaft lower Speed than the engine speed.

In the figure, an embodiment of the invention is schematically shown.

i is the shaft of the motor or a shaft of the reduction gear with a pinion that is permanently coupled to the motor. The arrow indicates the direction of rotation. The rotation is prevented by an internally toothed segment z, which can be rotated around the axis 3 and which transmits the power of the motor in the direction of the arrow to: a lever q :. This lever is pressed against the stop 6 by a spring 5. The tension of the spring can be adjusted using the adjustment lever? be regulated in both directions. When moving in the Siniin ° of arrow 15, the spring is tensioned. If the stops 16 hit one another during setting, the immediate triggering is switched off. In the event of a short circuit, the motor overcomes the spring 5 so that the lever performs a rotation about the axis 8 in the direction of its arrow and moves the pin 9, whereby the triggering movement is released in a manner known per se. In the case of smaller overcurrents, the double lever io is pivoted about the axis ii in the direction of its arrow. The axis 3 is moved upwards, whereby the toothed segment 2 disengages. The engine can now run. The gear wheel i engages with the co-moving gear wheel 12, which transmits the motor torque to the time lapse via the pinion 13 and the gear wheel 14.

Claims (3)

PATENT CLAIMS: i. At low overcurrent with delay and at large overcurrent or short-circuit current working without delay with an electric motor fed by the circuit to be monitored and a Zeitwerk, characterized in that the motor (i) which can be coupled with the Zeitwerk is held by an adjustable counter torque that the motor (i) only at high overcurrents for the purpose of instantaneous response of the relay overcomes while with small ones. Overcurrent the counter torque through the response element of the relay canceled and the motor (i) with the timer for the purpose of delayed response of the Relay is coupled. 2. Apparatus according to claim i, characterized in that the motor shaft (i) with the retaining member (2) for the motor acting on it is coupled via a toothing and that Idas retaining member (2) when delayed Triggering is lifted radially from the motor shaft (i), while there is no delay Triggered by the motor receives a tangential movement. 3. Device according to Claims i and 2, characterized in that da.s retaining member (2) -for the Motor, on, a shaft driven by the motor, lower speed than the motor speed attacks.