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Portable polarized relay testing equipment

A technology of polarized relays and testing equipment, which is applied in the direction of circuit breaker testing, etc., and can solve problems such as inability to accurately test and perform static suction and reaction force characteristic tests

Active Publication Date: 2014-09-03
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After adjusting according to the above four methods, it is impossible to accurately test the static suction and reaction force characteristics tests such as the operating current and return current of the actuator polarization relay in the whole set of tests

Method used

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  • Portable polarized relay testing equipment
  • Portable polarized relay testing equipment
  • Portable polarized relay testing equipment

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the drawings.

[0025] See figure 1 , Shows the working principle of a polarized relay. The following table 1 is the winding and characteristic table of polarized relay coil:

[0026]

[0027] Table 1

[0028] See figure 2 , The portable polarized relay test equipment of the present invention includes a polarized relay base 10, a switching switch between coils (winding I, winding II, winding III, and winding IV) 2kk, and a power reverse switch 1kk (positive and negative polarity of the coil winding) Switch), the first rheostat R1 (for coarse adjustment), the second rheostat R2 (for fine adjustment), the left contact on / off indicator light S1, the right contact on / off indicator light S2, the power supply Switch 3kk, power on button 4kk, battery pack 20 and jack for external ammeter, among them:

[0029] The positive electrode of the battery pack 20, the power switch 3kk, the power on button 4kk, the two...

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Abstract

The invention discloses portable polarized relay testing equipment which comprises a polarized relay base, a coil-to-coil switching switch, a power supply reversing switch, a first rheostat, a second rheostat, a middle left contact on / off indication lamp, a middle right contact on / off indication lamp, a power supply switch, a power supply switching-on button and a battery group, wherein the battery group, the power supply switch, a power supply switching-on button and the first rheostat are sequentially connected to form a loop; a fixed end of the second rheostat is connected with a sliding end of the first rheostat; the other fixed end of the second rheostat is connected with a first input end of the power supply reversing switch. The portable polarized relay testing equipment disclosed by the invention is used for testing mono-stable and bistable electromagnetic relays, supports current-direct parameter testing of four groups of coils and two groups of reversible contact electromagnetic relays, and meets 5-10 times action current impact testing of a polarized relay, and the debugging operation can be carried out just by external connection of ampere meters in different ranges.

Description

Technical field [0001] The invention relates to the field of relay testing, in particular to a testing equipment for testing the static attraction and reaction characteristics of a polarized relay. Background technique [0002] Polarized relays are widely used as rectifier relays in power system relay protection. The working principle of polarized relays is the combined action of the polarized magnetic field and the magnetic field generated by the control current through the control coil. The polarized magnetic field is general. Produced by magnetic steel or a polarized coil with direct current, the suction direction of the relay armature depends on the direction of current flowing in the control winding. The test of the static absorption and reaction force characteristics of small polarized relays at home and abroad, due to the small size of the relay structure, armature displacement and force and other parameters, the test is more difficult, especially the portable small test d...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 陈勇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO