SU409201A1 - - Google Patents

Description

DEVICE FOR MEASURING PARAMETER RELAY

one

The invention relates to the field of measuring technology and can be found in electromagnetically operated relays.

There are known devices for measuring relay parameters containing a logic element of a relay contact state, a source of contact current relay circuits, a relay coil source connected to a large scale element, an inverter, a counting emulsion generator, transmitted through a key with a counting indicator block.

However, each of the known devices permits the measurement of any one parameter; either sensitivity, or matching of the contact center, or time.

In practice, however, it is often necessary to measure all the list of relays at a time, therefore it is not necessary to achieve this whole set of instruments.

The aim of the invention is to create a multifunctional instrument for measuring the basic electrical (Lj ,, U oi.-i, RK) parameters of the relay (equipped with one indicating device) and the achievement of the productivity of an operator .

The goal is achieved by the fact that a switching state relay block is injected into the device, connected to a logic element of the relay and, with a source of contact contact nitann, is a relay switch that switches the measurement type, connected to the relay state switch, with a large-scale cell of the relay, with

the converter with a key, mashtabn1 1Y element elegr sonata, connected to the switching units of the relay state and type of measurement, the logical element of the state of the winding of the relay connected to it

unit type of measurement.

Pa drawing shows a block diagram of the proposed device.

The device contains a relayed relay 1, a logical element 2 of the relay contact state, a source of 3 nitany relay contact prices, a source of 4 relay winding currents, a logic element 5 of the relay winding state, 1 switching unit, a unit and a relay state, the unit 7 of the relay large, large scale)

element 8 is co-ordinated, large-scale element is nannuzhn 9, alternator 10, key //, generator of counting impulses 12, counting, ikatorny unit 13. The device has three operating modes corresponding to three types of measurement: measurement of nanopuns on triggering n measurement of response time and non-response. The transition from one tenant of work to another is achieved by means of selective switching of the institute carried out by the switching block 7.

The switching unit 6 carries out additional kO Mmutats11i to provide measurement of the parameters of the on (voltage, activation of the normally open contact, response time) and off (the voltage of the LIHD, resistance to normal, release, release time) of the relay. Regardless of the network mode of operation of the device, the winding relay is connected between the output of the power source 4 connected to the input and the scale element 9 and the input a of the logic element 5, and its contacts are connected to the inputs a and b of the logic element / and the switching unit 6.

Depending on the mode of operation of the device, the following futic links are established between its elements.

When measuring the response voltage and release, the signal input of the converter is connected to the output 6 of the scale element I, the control input b of the converter 10 is connected via the switching unit 6 to the outputs of the transducer 2, the output 6 of the key 11, the input a logical element 6 connect with ob1, eG1 point of the device.

When measuring with connected contacts, the signal input of the converter 10 is connected to the output b of the scale element 8, the output to the converter 10 is connected to the input of the switch b //, and the input of the scale element 8 via the switching unit 6 to the output of the intani 3 source and to the contacts of the relay the input of the logic element 5 through the switching unit 6 - with a common point of the device circuit.

When measuring the response time and release the key input // is connected to the output b of the logic element 5, the input b of the key // via the switching unit 6 - to the outputs c and d of the logic element 2, the input (I logical element 5 through the switching unit 6 - with obi; her point of the device circuit.

The device works as follows.

When measuring the response voltage to the winding of the relayed relay 1 from the power source -1, a smoothly increasing voltage is applied. In order to measure this voltage, the angular input of converter 10 is connected to the winding of the relay being relayed through the large-scale element 9, the control input b of the converter is connected to the output in the logic element /, which has a logical state of 1 before the relay trips work converter. The voltage pulses generated at the output of the converter 10 affects the input of the key b // in such a way that during the time the pulse is applied, the number of pulses from the generator 12 enters the counting-block unit 13 such that

in the corresponding masigbab gives a digital representation. of the size of the measured iaire as the voltage on the winding increases:) the information is hardly transmitted to the digital display of the nribor. At the moment of the relay triggering, its contacts change their state, which leads to the translation of r, the state of the logical "On output to the logic element / and the input connected to it," control b of the converter. At the start, the “O” at the control input stops the operation of the converter and the digital value of the device on the winding, which it had at the time of the relay, t. P. The trigger is activated.

To measure the release voltage, the input b of the converter 10 is re-interconnected by the block 6 to the input terminal g of the logic element /, which is before the release of the relay in the logical state. The normal operation of the converter is restored. The winding of the relay being tested from source 4 is fed by a diminishing voltage. As the voltage decreases on the digital display of the device, there is a continuous change of information. When a relay is released, its contacts change their state, which leads to a transition to the state of the logic output of the logic element / and the control input b of the converter connected to it. The operation of the converter is prohibited and the value of the voltage on the winding that it had at the time of waking the relay, i.e., the release voltage value, is recorded on the digital board of the device. When measuring the contact resistance, the signal input of the converter 10 is connected to the output source through the scale element 8 power supply 3 and by means of the unit 6 is co-muted either to normally closed (the relay is off) or to the normal open (relay on) contacts of the relay. The converter 10 I31 of the measuring element operates continuously, and the digital display of the device at the appropriate scale displays the numerical value of the value of the measured contact resistance. To supply and relieve voltage from the windings of the relay to be tested, one winding terminal is connected to the output of the power source 4, and another means of the block 6 is switched to the common point of the device circuit or is in an open circuit.

When measuring time pairs. A-1etrov converter 10 does not take part in the operation of the measuring element. The key input // is connected to the output of the logic element 5, and the input b is switched by means of block 6 to either the input at the (response time) or the output g (release time) of the logic element /.

In the original polo; kenya logical output

element} and the key input // associated with it are in the logical "O" state, and the connected output and the logic element 2 in the logical "1. The key // is locked, and nmnulses do not stay on the counting unit. At the moment of nodachm (nln remove) nannuzhn on the winding of the relay to be tested output: ygnnogo element 5 and connected to it the input of the key And Inobreta logical state of "1. The key // opens the 5th nronuscountable counts. At the moment the relay is triggered (or released), its contacts change their state and the output "(or d) of logic element 2 and the key input // input of the key // go to the state of logical" O.

The key // is locked and stops the passage of counting pulses. The open state time of the switch P is equal to the measured response time (nl release) of the relay. The number of nmuls, which arrived in the allowed time on the counting-indicator block, gives, in an appropriate scale, the total number of measured time. The control of the winding of the checkable drainage relay is the same as that of the intentional resistance of the switches.

6 Subject from b with t i p

The device for the purpose of the relay parameters contains its relay contact state element, power supply relay contact circuits, relay coil power supply, connected to the voltage scale element, transducer; block, characterized in that, in order to develop its functionality, a device consists of a relay, connected to a logic element of the relay contacts and a power supply terminal tact prices of relays, switching b; wc, type of dimension, connected to commutr1 () H1, nm block of relay states, with large-scale element: voltage, with converter n with k.pochom, large-scale element of counter-relay, connected with commutating blocks of state relays of the type are measured, a log element of the state of the winding of the relay, connecting with a co-ordinate unit of the type of measurement (penalty.