CN204903715U - Many functional switch power test operation platform - Google Patents

Abstract

The utility model relates to a maintenance equipment of electrical switching equipment specifically is a many functional switch power test operation platform in the pit. Many functional switch power test operation platform, including the cabinet body, internal major loop, control circuit and the pilot lamp return circuit of being equipped with of cabinet, the major loop includes isolator, closing relay, fuse, transformer, earth leakage protection relay, electric leakage circuit breaker, overcurrent relay, including locking switch, stop button and start button, the pilot lamp return circuit includes power indicator, voltage pilot lamp, the pilot lamp that leaks electricity, overflows the pilot lamp among the control circuit. The utility model provides a many functional switch power test operation platform, this test bench can satisfy the requirement of different electrical switching equipment detection voltage, and are examining the personal safety that time measuring can effectively protect the maintainer.

Description

Multifunction switch power supply test operation platform

Technical field

The utility model relates to the repair apparatus of down-hole electric switch equipment, is specially a kind of multifunction switch power supply test operation platform.

Background technology

Under inspection-pit during electric switch equipment, maintainer often needs hot line job to test.Under inspection-pit during electric switch; need to draw 660V power supply from mobile substation; although electric switch equipment has earth leakage protection and overcurrent protection; but these protections can only available protecting electric switch equipment; can not available protecting maintainer, and in maintenance process, over-current adjusting value is comparatively large, minimum also more than tens peaces; if two-phase occurs get an electric shock (human body is earth-free), maintainer's personal safety can be subject to serious threat.

Summary of the invention

The utility model can not get the problem of available protecting in order to personal safety when solving electric switch under inspection-pit, provides multifunction switch power supply test operation platform.

The utility model adopts following technical scheme to realize: multifunction switch power supply test operation platform, comprise cabinet, major loop is provided with in cabinet, control loop and pilot lamp loop, major loop comprises disconnector QS, the input end of disconnector QS is connected with external power source, the output terminal of disconnector QS is connected with the primary coil of the first transformer T1, the secondary coil of the first transformer T1 passes through the normally opened contact of the second closing relay J2, second overcurrent relay GJ2 and the second voltage terminal sub-connection, the output terminal of disconnector QS is also by the normally opened contact of the first closing relay J1, first overcurrent relay GJ1 and the first voltage terminal sub-connection, the primary coil of secondary coil also with the second transformer T2 of the first transformer T1 is connected, one secondary coil of the second transformer T2 is by the first fuse FU1, the normally opened contact of the 3rd closing relay J3, residual current circuit breaker QF is connected with tertiary voltage connection terminal, another secondary coil of second transformer T2 is by the normally opened contact of the second fuse FU2, the 4th closing relay J4 and the 4th voltage terminal sub-connection, second voltage wiring terminal is also connected with three-phase reactor, and three-phase reactor is by the coil ground connection of zero-sequence reactor and electric leakage protection relay L1,

Control loop comprises the first voltage control loop, second voltage control loop, tertiary voltage control loop and the 4th voltage control loop, wherein the first voltage control loop is by the coil of the first closing relay J1, the normally closed contact of the first overcurrent relay GJ1, first latch switch B1, first stop button T1 and the first start button Q1 is in series, second voltage control loop is by the coil of the second closing relay J2, the normally closed contact of the second overcurrent relay GJ2, second latch switch B2, the normally closed contact of electric leakage protection relay L1, second stop button T2 and the second start button Q2 is in series, tertiary voltage control loop is in series by the coil of the 3rd closing relay J3, the 3rd latch switch B3, the 3rd stop button T3 and the 3rd start button Q3, 4th voltage control loop is in series by the coil of the 4th closing relay J4, the 4th latch switch B4, the 4th stop button T4 and the 4th start button Q4, first voltage control loop, the second voltage control loop, tertiary voltage control loop and the 4th voltage control loop are in parallel, and are connected with control loop power supply,

Pilot lamp loop comprises power light L, power light L is connected on pilot lamp power current supply circuit, the branch road that the normally opened contact series connection that power light L two ends are also parallel with the first voltage indicator lamp L1 and the first closing relay J1 is formed, the branch road of the normally opened contact series connection formation of the second voltage indicator lamp L2 and the second closing relay J2, the branch road of the normally opened contact series connection formation of tertiary voltage pilot lamp L3 and the 3rd closing relay J3, the branch road of the normally opened contact series connection formation of the 4th voltage indicator lamp L4 and the 4th closing relay J4, the branch road of the normally opened contact series connection formation of electric leakage pilot lamp L5 and electric leakage protection relay L1, the branch road of the normally opened contact series connection formation of the first overcurrent pilot lamp L6 and the first overcurrent relay GJ1, the branch road of the normally opened contact series connection formation of the second overcurrent pilot lamp L7 and the second overcurrent relay GJ2,

Disconnector QS, first latch switch B1, second latch switch B2, 3rd latch switch B3, 4th latch switch B4, first stop button T1, second stop button T2, 3rd stop button T3, 4th stop button T4, first start button Q1, second start button Q2, 3rd start button Q3, 4th start button Q4, power light L, first voltage indicator lamp L1, second voltage indicator lamp L2, tertiary voltage pilot lamp L3, 4th voltage indicator lamp L4, electric leakage pilot lamp L5, first overcurrent pilot lamp L6 and the second overcurrent pilot lamp L7 is arranged on cabinet panel.

This multifunction switch power supply test operation platform accesses external power source in major loop, by major loop, external power source is transformed to the first voltage, second voltage, tertiary voltage and the 4th voltage, different electric switch maintenance voltage request can be met, if have selected the first voltage during maintenance, first voltage wiring terminal is connected with the electric switch that will overhaul, press the first start button Q1, first closing relay J1 coil obtains electric, the normally opened contact of the first closing relay J1 closes, first Voltage On state, can overhaul, the major loop of the first voltage is connected with the first overcurrent relay GJ1, when the secure threshold electric current that the electric current on the first voltage major loop sets higher than the first overcurrent relay GJ1, the normally closed contact action of the first overcurrent relay GJ1, first closing relay J1 coil losing electricity, the normally opened contact of the first closing relay J1 disconnects, the major loop of the first voltage disconnects, and then can maintainer be protected, when have selected other voltages and carrying out overhauling or testing, same operation can be carried out overhaul, the major loop of wherein the second voltage is connected with electric leakage protection relay L1, when the leakage current of a certain phase on the second voltage major loop is greater than the safety current that electric leakage protection relay L1 sets, the normally closed contact of electric leakage protection relay L1 disconnects, the major loop of the second voltage disconnects, and maintainer has been arrived in protection, pilot lamp in test operation platform on pilot lamp loop can show the current state of testing table.

The utility model provides a kind of multifunction switch power supply test operation platform, and this testing table can meet different electric switch equipment and detect voltage request, and can the personal safety of available protecting maintainer when detecting.

Accompanying drawing explanation

Fig. 1 is the electrical block diagram of major loop of the present utility model.

Fig. 2 is the electrical block diagram of control loop.

Fig. 3 is the electrical block diagram of pilot lamp loop.

Fig. 4 is structural representation of the present utility model.

Embodiment

Multifunction switch power supply test operation platform, comprise cabinet, major loop is provided with in cabinet, control loop and pilot lamp loop, major loop comprises disconnector QS, the input end of disconnector QS is connected with external power source, the output terminal of disconnector QS is connected with the primary coil of the first transformer T1, the secondary coil of the first transformer T1 passes through the normally opened contact of the second closing relay J2, second overcurrent relay GJ2 and the second voltage terminal sub-connection, the output terminal of disconnector QS is also by the normally opened contact of the first closing relay J1, first overcurrent relay GJ1 and the first voltage terminal sub-connection, the primary coil of secondary coil also with the second transformer T2 of the first transformer T1 is connected, one secondary coil of the second transformer T2 is by the first fuse FU1, the normally opened contact of the 3rd closing relay J3, residual current circuit breaker QF is connected with tertiary voltage connection terminal, another secondary coil of second transformer T2 is by the normally opened contact of the second fuse FU2, the 4th closing relay J4 and the 4th voltage terminal sub-connection, second voltage wiring terminal is also connected with three-phase reactor, and three-phase reactor is by the coil ground connection of zero-sequence reactor and electric leakage protection relay L1,

Control loop comprises the first voltage control loop, second voltage control loop, tertiary voltage control loop and the 4th voltage control loop, wherein the first voltage control loop is by the coil of the first closing relay J1, the normally closed contact of the first overcurrent relay GJ1, first latch switch B1, first stop button T1 and the first start button Q1 is in series, second voltage control loop is by the coil of the second closing relay J2, the normally closed contact of the second overcurrent relay GJ2, second latch switch B2, the normally closed contact of electric leakage protection relay L1, second stop button T2 and the second start button Q2 is in series, tertiary voltage control loop is in series by the coil of the 3rd closing relay J3, the 3rd latch switch B3, the 3rd stop button T3 and the 3rd start button Q3, 4th voltage control loop is in series by the coil of the 4th closing relay J4, the 4th latch switch B4, the 4th stop button T4 and the 4th start button Q4, first voltage control loop, the second voltage control loop, tertiary voltage control loop and the 4th voltage control loop are in parallel, and are connected with control loop power supply,

Pilot lamp loop comprises power light L, power light L is connected on pilot lamp power current supply circuit, the branch road that the normally opened contact series connection that power light L two ends are also parallel with the first voltage indicator lamp L1 and the first closing relay J1 is formed, the branch road of the normally opened contact series connection formation of the second voltage indicator lamp L2 and the second closing relay J2, the branch road of the normally opened contact series connection formation of tertiary voltage pilot lamp L3 and the 3rd closing relay J3, the branch road of the normally opened contact series connection formation of the 4th voltage indicator lamp L4 and the 4th closing relay J4, the branch road of the normally opened contact series connection formation of electric leakage pilot lamp L5 and electric leakage protection relay L1, the branch road of the normally opened contact series connection formation of the first overcurrent pilot lamp L6 and the first overcurrent relay GJ1, the branch road of the normally opened contact series connection formation of the second overcurrent pilot lamp L7 and the second overcurrent relay GJ2,

Disconnector QS, first latch switch B1, second latch switch B2, 3rd latch switch B3, 4th latch switch B4, first stop button T1, second stop button T2, 3rd stop button T3, 4th stop button T4, first start button Q1, second start button Q2, 3rd start button Q3, 4th start button Q4, power light L, first voltage indicator lamp L1, second voltage indicator lamp L2, tertiary voltage pilot lamp L3, 4th voltage indicator lamp L4, electric leakage pilot lamp L5, first overcurrent pilot lamp L6 and the second overcurrent pilot lamp L7 is arranged on cabinet panel.

When specifically using, the first voltage is 127V, and the second voltage is 660V, and tertiary voltage is 220V, and the 4th voltage is 36V, is the voltage that maintenance electric switch equipment is conventional; On major loop, the output terminal of disconnector QS is also connected with the 3rd transformer T3, and the 3rd transformer T3 provides control voltage for control loop.

Claims (1)

1. multifunction switch power supply test operation platform, it is characterized in that comprising cabinet, major loop is provided with in cabinet, control loop and pilot lamp loop, major loop comprises disconnector QS, the input end of disconnector QS is connected with external power source, the output terminal of disconnector QS is connected with the primary coil of the first transformer T1, the secondary coil of the first transformer T1 passes through the normally opened contact of the second closing relay J2, second overcurrent relay GJ2 and the second voltage terminal sub-connection, the output terminal of disconnector QS is also by the normally opened contact of the first closing relay J1, first overcurrent relay GJ1 and the first voltage terminal sub-connection, the primary coil of secondary coil also with the second transformer T2 of the first transformer T1 is connected, one secondary coil of the second transformer T2 is by the first fuse FU1, the normally opened contact of the 3rd closing relay J3, residual current circuit breaker QF is connected with tertiary voltage connection terminal, another secondary coil of second transformer T2 is by the normally opened contact of the second fuse FU2, the 4th closing relay J4 and the 4th voltage terminal sub-connection, second voltage wiring terminal is also connected with three-phase reactor, and three-phase reactor is by the coil ground connection of zero-sequence reactor and electric leakage protection relay L1,

Control loop comprises the first voltage control loop, second voltage control loop, tertiary voltage control loop and the 4th voltage control loop, wherein the first voltage control loop is by the coil of the first closing relay J1, the normally closed contact of the first overcurrent relay GJ1, first latch switch B1, first stop button T1 and the first start button Q1 is in series, second voltage control loop is by the coil of the second closing relay J2, the normally closed contact of the second overcurrent relay GJ2, second latch switch B2, the normally closed contact of electric leakage protection relay L1, second stop button T2 and the second start button Q2 is in series, tertiary voltage control loop is in series by the coil of the 3rd closing relay J3, the 3rd latch switch B3, the 3rd stop button T3 and the 3rd start button Q3, 4th voltage control loop is in series by the coil of the 4th closing relay J4, the 4th latch switch B4, the 4th stop button T4 and the 4th start button Q4, first voltage control loop, the second voltage control loop, tertiary voltage control loop and the 4th voltage control loop are in parallel, and are connected with control loop power supply,

Pilot lamp loop comprises power light L, power light L is connected on pilot lamp power current supply circuit, the branch road that the normally opened contact series connection that power light L two ends are also parallel with the first voltage indicator lamp L1 and the first closing relay J1 is formed, the branch road of the normally opened contact series connection formation of the second voltage indicator lamp L2 and the second closing relay J2, the branch road of the normally opened contact series connection formation of tertiary voltage pilot lamp L3 and the 3rd closing relay J3, the branch road of the normally opened contact series connection formation of the 4th voltage indicator lamp L4 and the 4th closing relay J4, the branch road of the normally opened contact series connection formation of electric leakage pilot lamp L5 and electric leakage protection relay L1, the branch road of the normally opened contact series connection formation of the first overcurrent pilot lamp L6 and the first overcurrent relay GJ1, the branch road of the normally opened contact series connection formation of the second overcurrent pilot lamp L7 and the second overcurrent relay GJ2,

Disconnector QS, first latch switch B1, second latch switch B2, 3rd latch switch B3, 4th latch switch B4, first stop button T1, second stop button T2, 3rd stop button T3, 4th stop button T4, first start button Q1, second start button Q2, 3rd start button Q3, 4th start button Q4, power light L, first voltage indicator lamp L1, second voltage indicator lamp L2, tertiary voltage pilot lamp L3, 4th voltage indicator lamp L4, electric leakage pilot lamp L5, first overcurrent pilot lamp L6 and the second overcurrent pilot lamp L7 is arranged on cabinet panel.