SU613435A1 - Bus-bar electromagnetic maximum current relay - Google Patents

Description

This invention relates to devices for protecting electrical linear current overloads. Electromagnetic overload relays are known, the setting of which setpoint is carried out by moving the setpoint adjustment elements relative to the conductor 1. Also known are the overcurrent electromagnetic current relays containing the magnetic conductor and the pickup setting adjustment element 3 of the form: installed parts made of magnetic material, covering the conductor 2 These relays use two permanent magnets covering the half-rings of contacts and current wire Adjusting the pick-up setting is achieved by removing or bringing the permanent magnets to the conductor. These can only be included in the conductor gap, which reduces the reliability of their work. In order to increase the reliability of the relay, the magnetic circuit is made tubular and disconnect, and the setpoint adjustment control element is made in the form of at least two tubular, open, additional magnetic circuits mounted on it. FIG. Figures 1 and 2 schematically depict the proposed device in two projections. It consists of a tubular open magnetic circuit / l of two movable open magnetic circuits 2 mounted on it with grooves for movement along guide screws 3. Anchor 4 3 in the open-loop state is pressed by spring 5 to the zint 6, which regulates the lifting of the core. The force of the spring 5 is adjusted by the screw 7 with the aid of the bar 8. With the pilot pins 9, the core 4 is held (in a predetermined position. The fixing screw W holds the bore 4 on the guide pins x 9 when the relay is in an inverted state. Anchor 4 has a protrusion // with which it switches on the julok 12 contact when current passes through the toking line 3. Tokoprozod 13 is introduced into 1 magnetoprosis /, is placed along its length and pressed against the wall by the insulator 14. With the passage of direct current through the choking network 13, the measles 4 relays are affected magnetic field and under lyuchit or disconnect the protected circuit. In case of insufficient or excessive magnitodvilsuschey power for normal operation of the relay moves the movable magnetic cores 2, changing the number of lines of force of the magnetic field acting on the armature 4 and fixed in their guide screws 3.

The described electromagnetic bus relay of maximum current can be installed on a conductor in any convenient place and moved to any point without breaking the conductor itself, which increases the reliability of its work.

Form u l a |} 1 3 about b, rec e m i

Electromagnetic bus relay m, of a shallow current, containing its magnetic core: i an adjustment setpoint for the operation set in the ande of movably mounted parts made of magnetic material, covering the conductor, characterized in that, in order to increase the reliability of the relay, the magnetic circuit is made tubular and open, and the element adjustment of the setpoint of operation is made in the zid of at least two tubular open-loop additional magnetic circuits mounted on it.

Sources of information accepted by reference during examination:

1. US Patent L 3213231, 335-204, 955.: 2. USSR Author's Certificate XQ 276254, Oil H 63/04, 1967.

N and

ten

Puz.i

B

dpUZ.i