A kind of three-position switch array conducting insulated test device and methodTechnical field
The invention belongs to cable conducting Insulation test technical field, be specifically related to a kind of three-position switch array conducting insulated test device and method.
Background technology
Cable is in the transmission of electrical connection, electric signal and have irreplaceable effect in controlling, and can the quality of its conducting insulating property be related to system and normally run.
Cable has been produced and can only to have been realized by the electric connector at two ends its test afterwards, direct pen meter of universal meter or megohmmeter measuring junction contact electric connector can cause damage to electric connector, so, traditional conducting insulation test method is by the binding post array led to a little on testing cassete panel on electric connector, the pointwise test on binding post with multimeter or megohmmeter.The method is loaded down with trivial details, complicated operation, and efficiency is low, and cable junctions number is more, and testing efficiency is lower.
Patent CN101701994A, name is called " a kind of conduction insulation test method for low-frequency cable network " discloses a kind of cable conducting insulation test method, and the method is connected in series two-position switch array respectively on traditional binding post array, is connected to a common test end.By the match selection of binding post array and switch arrays, complete cable insulation characteristic test; Continuity test is by adjacent two wire short circuits, utilizes multimeter to test low-frequency impedance characteristic.The method improves testing efficiency, but need move one by one on binding post array during operation, and coordinates switch to select, and operates easy not.
Patent CN202305638U, name is called that " a kind of relay array type conduction insulation test circuit " discloses a kind of conducting insulation test circuit, artificial point-to-point test process is converted to and can be subject to computer-controlled test process by this device, reduce the test duration, but this device circuit is complicated, huge structure, is not suitable for field testing.
Summary of the invention
The object of the present invention is to provide a kind of three-position switch array conducting insulated test device and method, this apparatus structure is simple and reliable, and cost is low, easy and simple to handle, and testing efficiency is high, is applicable to laboratory and on-site cable testing requirement.
Technical scheme of the present invention is as follows: a kind of three-position switch array conducting insulated test device, this proving installation comprises several three locking double-break switchs, and the mid point of three all locking double-break switchs is all connected to external plug-in component contact Y1 with described proving installation; The side contact of all three locking double-break switchs is connected to common test end X1, and other end contact is connected to common test end X2.
Described proving installation comprises 85 three locking double-break switchs.
The model of three described locking double-break switchs is KN4A-203-M.
A kind of three-position switch array continuity test method, the method specifically comprises the steps:
Step 1, tested cable to be connected with above-mentioned three-position switch array conducting insulated test device, and the multimeter two being set to resistance grade is tested test pencil to be connected with the common port of this proving installation respectively;
Step 2, cable map according to tested cable, utilize three-position switch array conducting insulated test device to carry out continuity test.
Described step 1 is specially: be connected to external plug-in component contact Y1 with above-mentioned proving installation by transit cable total for tested cable plug one end, and the other end socket-outlet adaptor of tested cable is installed short circuit plug; All three the locking double-break switchs of initial setting up are in overhead positions, and multimeter two is tested test pencil connecting test common port X1, X2 respectively, arranging multimeter is resistance grade.
Described step 2 is specially:
According to the cable map of tested cable, selection function corresponding three locking double-break switchs identical with length carry out pairwise testing, one of them three locking double-break switchs are allocated to test common port X1 side, another three locking double-break switchs are allocated to test common port X2 side, form test loop, observe multimeter numerical value, after having tested, three locking double-break switchs are reversed overhead positions; According to the cable map pairwise testing successively of tested cable, namely complete the continuity test of tested cable;
If there is ignore in tested cable, skip this point; If there are multiple somes cross-over connections in plug-in unit in cable, the resistance between these bridge positions of pairwise testing, can test the conducting of bonding line, tests these bridge positions and other non-bridging point, can the conducting of test cable wire.
A kind of three-position switch array insulation test method, the method specifically comprises the steps:
Step 1, to be connected with above-mentioned three-position switch array conducting insulated test device by tested cable, and to be connected with the common test end of this proving installation by positive for megohmmeter test pencil, negative test pencil is connected with tested cable-to-cable connector shell and another common test end;
Step 2, megohmmeter is utilized to complete the testing insulation between plates of wire and housing Insulation test and tested wire in tested cable.
Described step 1 is specially: be connected to external plug-in component contact Y1 with above-mentioned proving installation by transit cable total for tested cable plug one end; All three the locking double-break switchs of initial setting up are placed in test common port X1 side, and positive for megohmmeter test pencil is connected common test end X1, and negative test pencil is connected with tested cable-to-cable connector shell and common test end X2.
Described step 2 is specially:
Step 2.1, megohmmeter is set to output voltage state, observes the insulation resistance value of megohmmeter when negative test pencil is connected with tested cable-to-cable connector shell and whether meet technical requirement, complete all wires and housing Insulation test in tested cable;
Step 2.2, megohmmeter is born test pencil be connected with the common test end X2 in above-mentioned proving installation, successively three locking double-break switchs are toggled it to common test end X2 from common test end X1 side one by one, observe megohmmeter insulation resistance value and whether meet technical requirement, complete the testing insulation between plates of cable conductor;
If there is ignore in the tested cable of step 2.3, in three locking double-break switch initial setting up, this switch corresponding to point is in overhead positions; If there are multiple somes cross-over connections in tested cable, then in the initial setting up of three locking double-break switchs, in multiple bridge position, any one three locking double-break switchs are allocated to common test end X1 side, and all the other are unsettled.
Remarkable result of the present invention is: a kind of three-position switch array conducting insulated test device of the present invention and method, and structure is simple, cost is low is convenient for carrying; Adopt double-pole Redundancy Design, reliability is high; The high conventional test methodologies that overcomes of easy and simple to handle, efficiency needs on panel, to carry out point-to-point operation one by one simultaneously; This device highly versatile, directly can install the connector of multiple different model, and configure the transit cable of plurality of specifications, have very strong versatility.
Accompanying drawing explanation
Fig. 1 is a kind of three-position switch array conducting insulated test device circuit structure diagram of the present invention;
Fig. 2 utilizes three-position switch array conducting insulated test device of the present invention to carry out the connection diagram of continuity test;
Fig. 3 utilizes three-position switch array conducting insulated test device of the present invention to carry out the connection diagram of Insulation test.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As described in Figure 1, a kind of three-position switch array conducting insulated test device comprises several three locking double-break switchs, such as comprise three locking double-break switchs that 85 models are KN4A-203-M, the mid point of all three locking double-break switchs is connected to proving installation to external plug-in component contact Y1, all three locking double-break switch side contacts are connected to common test end X1, and opposite side contact is connected to common test end X2.
As shown in Figure 2, a kind of three-position switch array continuity test method, the method specifically comprises the steps:
Step 1, tested cable to be connected with three-position switch array conducting insulated test device, and the multimeter two being set to resistance grade is tested test pencil to be connected with the common port of this proving installation respectively;
Total for tested cable plug one end is connected to external plug-in component contact Y1 with above-mentioned proving installation by transit cable, and the other end socket-outlet adaptor of tested cable is installed short circuit plug; All three the locking double-break switchs of initial setting up are in overhead positions, and multimeter two is tested test pencil connecting test common port X1, X2 respectively, arranging multimeter is resistance grade;
Step 2, cable map according to tested cable, utilize three-position switch array conducting insulated test device to carry out continuity test;
According to the cable map of tested cable, selection function corresponding three locking double-break switchs identical with length carry out pairwise testing, one of them three locking double-break switchs are allocated to test common port X1 side, another three locking double-break switchs are allocated to test common port X2 side, form test loop, observe multimeter numerical value, after having tested, three locking double-break switchs are reversed overhead positions; According to the cable map pairwise testing successively of tested cable, namely complete the continuity test of tested cable;
If there is ignore in tested cable, skip this point; If there are multiple somes cross-over connections in plug-in unit in cable, the resistance between these bridge positions of pairwise testing, can test the conducting of bonding line, tests these bridge positions and other non-bridging point, can the conducting of test cable wire.
As shown in Figure 3, a kind of three-position switch array insulation test method, the method specifically comprises the steps:
Step 1, to be connected with three-position switch array conducting insulated test device by tested cable, and to be connected with the common test end of this proving installation by positive for megohmmeter test pencil, negative test pencil is connected with tested cable-to-cable connector shell and another common test end;
Total for tested cable plug one end is connected to external plug-in component contact Y1 with above-mentioned proving installation by transit cable; All three the locking double-break switchs of initial setting up are placed in test common port X1 side, and positive for megohmmeter test pencil is connected common test end X1, and negative test pencil is connected with tested cable-to-cable connector shell and another common test end X2;
Step 2, megohmmeter is utilized to complete the testing insulation between plates of wire and housing Insulation test and tested wire in tested cable;
Step 2.1, megohmmeter is set to output voltage state, observes the insulation resistance value of megohmmeter when negative test pencil is connected with tested cable-to-cable connector shell and whether meet technical requirement, complete all wires and housing Insulation test in tested cable;
Step 2.2, megohmmeter is born test pencil be connected with the common test end X2 in above-mentioned proving installation, successively three locking double-break switchs are toggled it to common test end X2 from common test end X1 side one by one, observe megohmmeter insulation resistance value and whether meet technical requirement, complete the testing insulation between plates of cable conductor;
If there is ignore in the tested cable of step 2.3, in three locking double-break switch initial setting up, this switch corresponding to point is in overhead positions; If there are multiple somes cross-over connections in tested cable, then in the initial setting up of three locking double-break switchs, in multiple bridge position, any one three locking double-break switchs are allocated to common test end X1 side, and all the other are unsettled.