CN203101556U - Multifunctional debugging trolley - Google Patents
Multifunctional debugging trolley Download PDFInfo
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- CN203101556U CN203101556U CN 201320080275 CN201320080275U CN203101556U CN 203101556 U CN203101556 U CN 203101556U CN 201320080275 CN201320080275 CN 201320080275 CN 201320080275 U CN201320080275 U CN 201320080275U CN 203101556 U CN203101556 U CN 203101556U
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Abstract
The utility model provides a multifunctional debugging trolley, and belongs to the field of debugging technology of middle and low-voltage power distribution products. The multifunctional debugging trolley comprises an incoming line protection circuit, a DC24V voltage output circuit, a three-phase AC100V voltage output circuit, a single-phase AC220V voltage output circuit, a three-phase AC380V voltage output circuit, an overvotlage alarming function circuit, a three-phase alternating current voltage regulating and current transforming circuit and a DC220V direct current power supply circuit, wherein the input end of the incoming line protection circuit is externally connected with a three-phase four-wire power supply, and the output end of the incoming line protection circuit is connected with the three-phase AC100V voltage output circuit, the single-phase AC220V voltage output circuit, the three-phase AC380V voltage output circuit, the overvoltage alarming function circuit, the three-phase alternating current voltage regulating and current transforming circuit and the DC220V direct current power supply circuit; the DC24V voltage output circuit is connected with the three-phase AC110V voltage output circuit; and the three-phase alternating current voltage regulating and current transforming circuit is connected with the overvoltage alarming function circuit. By adopting the multifunctional debugging trolley, the product test is simplified; and the multifunctional debugging trolley is fully functional, low in energy consumption, convenient to use and high in test efficiency.
Description
Technical field
During the utility model belongs to, low-voltage distribution production debugging technical field, be specifically related to a kind of multi-functional debugging dolly
Background technology
Debugging dolly commonly used has only the output function of single-phase voltage, three-phase voltage, three phase voltage regulating, direct current voltage reulation, three-phase unsteady flow.Because three phase voltage regulating, direct current voltage reulation and these three kinds of functions of three-phase unsteady flow all need the support of pressure regulator, so three kinds of functions do not allow to use simultaneously, only optional one kind is used.Separate unit debugging dolly commonly used can be to conventional low-voltage distribution product, as debugging of switching on such as low-voltage-powered case, the fixed switch cubicle of low pressure, low pressure draw out switchgear cabinets.But when needs were debugged 10KV AC metal armouring draw out switchgear cabinet, the debugging dolly then needs to possess exported three-phase AC100V, single-phase AC220V, three road DC220V, the ability of three-phase current AC0～5A simultaneously.If carry out above test, then need three dolly collaborative works could satisfy the debugging requirement by debugging dolly commonly used.In addition, when the low-pressure reactive compensation cabinet is debugged, require the debugging dolly to export three phase voltage regulating AC0～450V voltage and three-phase AC0～5A adjustable current simultaneously, and possess " three-phase overvoltage cutoff " clocking capability.If carry out above test, then need the collaborative work of two debugging dollies could satisfy the debugging requirement by debugging dolly commonly used.In concrete production work, if use two to three debugging dolly collaborative works simultaneously, can make the course of work very loaded down with trivial details, and be unfavorable for safety in production.
In view of above-mentioned prior art, be necessary existing debugging dolly is improved, for this reason, the applicant has done useful design, and technical scheme described below produces under this background
Summary of the invention
The purpose of this utility model be to provide a kind of practical, energy loss is few, complete function, multi-functional debugging dolly that protectiveness is good.
The purpose of this utility model reaches like this; a kind of multi-functional debugging dolly; comprise the incoming relay-protection loop; DC24V voltage output loop; three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop; the external three-phase four-wire power of input end in described incoming relay-protection loop; the output terminal in incoming relay-protection loop and three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop connect; described DC24V voltage output loop is connected with three-phase AC100V voltage output loop, and three phase ac voltage regulation unsteady flow loop is connected with superpotential warning function loop.
In a specific embodiment of the present utility model; described incoming relay-protection loop comprises incoming relay-protection miniature circuit breaker CB1 and power light 1HL; four tunnel ends of incoming cables of incoming relay-protection miniature circuit breaker CB1 successively with the A phase line of three-phase four-wire power; the B phase line; C phase line and N phase line connect; the PE line of three-phase supply is connected with the ground connection row of debugging dolly; the leading-out terminal of incoming relay-protection miniature circuit breaker CB1 and three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop connect; first leading-out terminal of the termination incoming relay-protection miniature circuit breaker CB1 of power light 1HL, the other end of power light 1HL tap into second leading-out terminal of line protection miniature circuit breaker CB1.
In another specific embodiment of the present utility model, described DC24V voltage output loop comprises Switching Power Supply UR, voltage table 1PV and miniature circuit breaker CB21, the L end of Switching Power Supply UR, N end respectively with three-phase AC100V voltage output loop in first leading-out terminal of miniature circuit breaker CB2 be connected with second leading-out terminal, the positive output end of Switching Power Supply UR is connected with the end of voltage table 1PV and the end of incoming cables of miniature circuit breaker CB21, the negative output terminal of Switching Power Supply UR is connected with the other end of voltage table 1PV and another end of incoming cables of miniature circuit breaker CB21, two leading-out terminals of miniature circuit breaker CB21 are marked as the YL1 cable, are used to export DC24V debugging power supply.
In another specific embodiment of the present utility model; described three-phase AC100V voltage output loop comprises miniature circuit breaker CB2; CB22; transformer T1; T2; pilot lamp 2HL; voltage change-over switch SV1 and voltage table 2PV; first of miniature circuit breaker CB2; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; one end of the L end of the Switching Power Supply UR in first leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop and the primary coil of transformer T1 is connected; one end of the primary coil of the other end of the primary coil of transformer T1 and transformer T2; the N end of Switching Power Supply UR in second leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop connects; the other end of the primary coil of transformer T2 is connected with the 3rd leading-out terminal of miniature circuit breaker CB2 and the end of pilot lamp 2HL; the other end of pilot lamp 2HL is connected with the 4th leading-out terminal of miniature circuit breaker CB1; 1 of one end of the secondary coil of transformer T1 and voltage change-over switch SV1; first end of incoming cables of 3 pin and miniature circuit breaker CB22 connects; one end of the secondary coil of the other end of the secondary coil of transformer T1 and transformer T2; 5 of voltage change-over switch SV1; second end of incoming cables of 7 pin and miniature circuit breaker CB22 connects; 9 of the other end of the secondary coil of transformer T2 and voltage change-over switch SV1; the 3rd end of incoming cables of 11 pin and miniature circuit breaker CB22 connects; 2 of voltage change-over switch SV1; 6; 10 pin connect the end of voltage table 2PV jointly; 4 of voltage change-over switch SV1; 8; 12 pin connect the other end of voltage table 2PV jointly; three leading-out terminals of miniature circuit breaker CB22 are marked as the YL2 cable, are used to export three-phase AC100V debugging power supply.
In another specific embodiment of the present utility model; described single-phase AC220V voltage output loop comprises miniature circuit breaker CB3; voltage table 3PV and pilot lamp 3HL; first leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of miniature circuit breaker CB3 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB3 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB3 is connected with the end of the end of voltage table 3PV and pilot lamp 3HL; another leading-out terminal of miniature circuit breaker CB3 is connected with the other end of the other end of voltage table 3PV and pilot lamp 3HL; two leading-out terminals of miniature circuit breaker CB3 are marked as the YL3 cable, are used to export single-phase AC220V debugging power supply.
Also have in the specific embodiment of the present utility model; described three-phase AC380V voltage output loop comprises miniature circuit breaker CB4; pilot lamp 4HL; voltage change-over switch SV2 and voltage table 4PV; first of miniature circuit breaker CB4; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; 1 of first leading-out terminal of miniature circuit breaker CB4 and the end of pilot lamp 4HL and voltage change-over switch SV2; 3 pin connect; 5 of second leading-out terminal of miniature circuit breaker CB4 and the other end of pilot lamp 4HL and voltage change-over switch SV2; 7 pin connect; 9 of the 3rd leading-out terminal of miniature circuit breaker CB4 and voltage change-over switch SV2; 11 pin connect; 2 of voltage change-over switch SV2; 6; 10 pin are connected with the end of voltage table 4PV jointly; 4 of voltage change-over switch SV2; 8; 12 pin are connected with the other end of voltage table 4PV jointly; three leading-out terminals of miniature circuit breaker CB4 are in conjunction with a lead-in wire of the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; be marked as the YL4 cable, be used to export three-phase AC380V debugging power supply.
More of the present utility model and in specific embodiment; described superpotential warning function loop comprises multifunctional digital voltage table 5PV; for a long time instrument LS and relay K A; 1 of multifunctional digital voltage table 5PV; 2; 11～14 pin insert three phase ac voltage regulation unsteady flow loop; 28 pin of multifunctional digital voltage table 5PV are succeeded an end of the normally opened contact of electrical equipment KA; another termination of the normally opened contact of relay K A is 2 pin of instrument LS for a long time; for a long time 1 pin of instrument LS connects 29 pin of multifunctional digital voltage table 5PV; the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the one termination incoming relay-protection loop of the coil of relay K A; the other end of the coil of relay K A is marked as the YL5 cable, is used for being connected with test specimen.
In of the present utility model and then specific embodiment; described three phase ac voltage regulation unsteady flow loop comprises miniature circuit breaker CB5; CB51; CB52; pilot lamp 5HL; pressure regulator T3; transformer T4; knob SA and reometer 1PA; 2PA; 3PA; first of described miniature circuit breaker CB5; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; first leading-out terminal of miniature circuit breaker CB5 and the end of pilot lamp 5HL; 1 pin of multifunctional digital voltage table 5PV in the first input end of pressure regulator T3 and the superpotential warning function loop connects; 2 of the other end of pilot lamp 5HL and multifunctional digital voltage table 5PV; 14 pin tap into the 4th leading-out terminal of line protection miniature circuit breaker CB1 jointly; second of pressure regulator T3; the 3rd input end respectively with second of miniature circuit breaker CB5; the 3rd leading-out terminal connects; primary coil first end of incoming cables of first output terminal of pressure regulator T3 and transformer T4; 11 pin of first end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil second end of incoming cables of second output terminal of pressure regulator T3 and transformer T4; 12 pin of second end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil the 3rd end of incoming cables of the 3rd output terminal of pressure regulator T3 and transformer T4; 13 pin of the 3rd end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; the secondary coil first of transformer T4; second; the 3rd leading-out terminal respectively with first of knob SA; second; the 3rd input end connects; the secondary coil the 4th of transformer T4; the 5th; the 6th leading-out terminal respectively with the 4th of knob SA; the 5th; the 6th input end connects; the first and the 4th output terminal of knob SA connects with the input end of reometer 1PA; the second and the 5th output terminal of knob SA connects with the input end of reometer 2PA; the the 3rd and the 6th output terminal of knob SA connects with the input end of reometer 3PA; reometer 1PA; 2PA; the output terminal of 3PA respectively with first of miniature circuit breaker CB52; second; the 3rd end of incoming cables connects; primary coil the 4th end of incoming cables of the 4th end of incoming cables of pressure regulator T3 and transformer T4 taps into the 4th leading-out terminal of line protection miniature circuit breaker CB1 jointly; first of miniature circuit breaker CB51; second; the 3rd leading-out terminal is marked as the YL6 cable in conjunction with the 4th leading-out terminal lead-in wire of incoming relay-protection miniature circuit breaker CB1; be used to provide three-phase AC0～450V to exchange and debug power supply; first of miniature circuit breaker CB52; second; the 3rd leading-out terminal is in conjunction with the 4th leading-out terminal of transformer T4; be marked as the YL7 cable, be used to provide three-phase 0～10A adjustable current power supply.
Of the present utility model again more and in specific embodiment; described DC220V direct current power supply loop comprises miniature circuit breaker CB6; CB61; CB62; CB63; CB64; pilot lamp 6HL; transformer T5; bridge heap V1; voltage table 6PV; diode V2; V3; resistance R 1 and capacitor C 1; first leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of described miniature circuit breaker CB6 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB6 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB6 is connected with an end of the primary coil of the end of pilot lamp 6HL and transformer T5; another leading-out terminal of miniature circuit breaker CB6 is connected with the other end of the primary coil of the other end of pilot lamp 6HL and transformer T5; one end of the secondary coil of transformer T5 is connected with the input end of bridge heap V1; the other end of the secondary coil of transformer T5 is connected with another input end of bridge heap V1; the output terminal of bridge heap V1 and the end of voltage table 6PV; the end of incoming cables of miniature circuit breaker CB61; the end of incoming cables of miniature circuit breaker CB62; the end of incoming cables of miniature circuit breaker CB63 and the end of incoming cables of miniature circuit breaker CB64 connect; another output terminal of bridge heap V1 and the other end of voltage table 6PV; another end of incoming cables of miniature circuit breaker CB61; another end of incoming cables of miniature circuit breaker CB62; another end of incoming cables of another end of incoming cables of miniature circuit breaker CB63 and miniature circuit breaker CB64 connects; the leading-out terminal of miniature circuit breaker CB61 is connected with an end of the negative pole of diode V2 and resistance R 1; the other end of the positive pole of diode V2 and resistance R 1; the positive pole of the negative pole of diode V3 and capacitor C 1 connects; the positive pole of diode V3 is connected with the negative pole of capacitor C 1 and another leading-out terminal of miniature circuit breaker CB61; two leading-out terminals of miniature circuit breaker CB62 are marked as the YL8 cable; be used to provide DC220V control bus power supply; two leading-out terminals of miniature circuit breaker CB63 are marked as the YL9 cable; be used to provide DC220V signal bus power supply; two leading-out terminals of miniature circuit breaker CB64 are marked as the YL10 cable, are used to provide closing bus bar direct current debugging power supply.
The utility model is owing to adopted said structure; can provide DC24V debugging power supply, three-phase AC100V debugging power supply, single-phase AC220V debugging power supply, three-phase AC380V debugging power supply, three-phase AC0～450V to exchange and to debug power supply and three-phase 0～10A adjustable current simultaneously; have short circuit, overload, overcurrent, overvoltage and creepage protection function simultaneously; product testing is oversimplified; and practical, complete function, energy loss are little, easy to use, have improved test efficiency greatly.
Description of drawings
Fig. 1 is theory diagram of the present utility model and circuit diagram.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below in conjunction with the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form but not the variation of essence all should be considered as protection domain of the present utility model according to the utility model design.
See also Fig. 1; a kind of multi-functional debugging dolly comprises incoming relay-protection loop, DC24V voltage output loop, three-phase AC100V voltage output loop, single-phase AC220V voltage output loop, three-phase AC380V voltage output loop, superpotential warning function loop, three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop.The external three-phase four-wire power of input end in described incoming relay-protection loop, the output terminal in incoming relay-protection loop is connected with three-phase AC100V voltage output loop, single-phase AC220V voltage output loop, three-phase AC380V voltage output loop, superpotential warning function loop, three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop.Described DC24V voltage output loop is connected with three-phase AC100V voltage output loop, and three phase ac voltage regulation unsteady flow loop is connected with superpotential warning function loop.
Described incoming relay-protection loop comprises incoming relay-protection miniature circuit breaker CB1 and power light 1HL.Four tunnel ends of incoming cables of incoming relay-protection miniature circuit breaker CB1 are connected with A phase line, B phase line, C phase line and the N phase line of three-phase four-wire power successively, and the PE line of three-phase supply is connected with the ground connection row of debugging dolly.The leading-out terminal of incoming relay-protection miniature circuit breaker CB1 is connected with three-phase AC100V voltage output loop, single-phase AC220V voltage output loop, three-phase AC380V voltage output loop, superpotential warning function loop, three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop.First leading-out terminal of the termination incoming relay-protection miniature circuit breaker CB1 of power light 1HL, the other end of power light 1HL tap into second leading-out terminal of line protection miniature circuit breaker CB1.The incoming relay-protection loop has short circuit, overload, creepage protection function, can well guarantee the safe handling of personal safety and equipment.
Described DC24V voltage output loop comprises Switching Power Supply UR, voltage table 1PV and miniature circuit breaker CB21, and in the present embodiment, described Switching Power Supply UR adopts S-150-24.The L of Switching Power Supply UR end, N end respectively with three-phase AC100V voltage output loop in first leading-out terminal of miniature circuit breaker CB2 be connected with second leading-out terminal; the positive output end of Switching Power Supply UR is connected with the end of voltage table 1PV and the end of incoming cables of miniature circuit breaker CB21; the negative output terminal of Switching Power Supply UR is connected with the other end of voltage table 1PV and another end of incoming cables of miniature circuit breaker CB21; two leading-out terminals of miniature circuit breaker CB21 are marked as the YL1 cable, be used to export DC24V debugging power supply and short-circuit protection is provided.Voltage table 1PV shows DC voltage numerical value.
Described three-phase AC100V voltage output loop comprises miniature circuit breaker CB2, CB22, transformer T1, T2, pilot lamp 2HL, voltage change-over switch SV1 and voltage table 2PV, in the present embodiment, described transformer T1, T2 adopt BK-150, and voltage change-over switch SV1 adopts LW15-16YH3.3.First of miniature circuit breaker CB2; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; one end of the L end of the Switching Power Supply UR in first leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop and the primary coil of transformer T1 is connected; one end of the primary coil of the other end of the primary coil of transformer T1 and transformer T2; the N end of Switching Power Supply UR in second leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop connects; the other end of the primary coil of transformer T2 is connected with the 3rd leading-out terminal of miniature circuit breaker CB2 and the end of pilot lamp 2HL; the other end of pilot lamp 2HL is connected with the 4th leading-out terminal of miniature circuit breaker CB1; 1 of one end of the secondary coil of transformer T1 and voltage change-over switch SV1; first end of incoming cables of 3 pin and miniature circuit breaker CB22 connects; one end of the secondary coil of the other end of the secondary coil of transformer T1 and transformer T2; 5 of voltage change-over switch SV1; second end of incoming cables of 7 pin and miniature circuit breaker CB22 connects; 9 of the other end of the secondary coil of transformer T2 and voltage change-over switch SV1; the 3rd end of incoming cables of 11 pin and miniature circuit breaker CB22 connects; 2 of voltage change-over switch SV1; 6; 10 pin meet the end of voltage table 2PV, 4 of voltage change-over switch SV1 jointly; 8; 12 pin connect the other end of voltage table 2PV jointly.Three leading-out terminals of miniature circuit breaker CB22 are marked as the YL2 cable, are used to export three-phase AC100V debugging power supply and provide short circuit and overload protection.Voltage table 2PV is used to indicate voltage value.
Described single-phase AC220V voltage output loop comprises miniature circuit breaker CB3, voltage table 3PV and pilot lamp 3HL.First leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of miniature circuit breaker CB3 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB3 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB3 is connected with the end of the end of voltage table 3PV and pilot lamp 3HL, and another leading-out terminal of miniature circuit breaker CB3 is connected with the other end of the other end of voltage table 3PV and pilot lamp 3HL.Two leading-out terminals of miniature circuit breaker CB3 are marked as the YL3 cable, be used to export single-phase AC220V debugging power supply, and short circuit and overload protection are provided.Voltage table 3PV shows alternating voltage numerical value.If pilot lamp 3HL lights, represent that then this loop switches on.
Described three-phase AC380V voltage output loop comprises miniature circuit breaker CB4, pilot lamp 4HL, voltage change-over switch SV2 and voltage table 4PV, and in the present embodiment, described voltage change-over switch SV2 adopts LW15-16YH3.3.First of miniature circuit breaker CB4; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; 1 of first leading-out terminal of miniature circuit breaker CB4 and the end of pilot lamp 4HL and voltage change-over switch SV2; 3 pin connect; 5 of second leading-out terminal of miniature circuit breaker CB4 and the other end of pilot lamp 4HL and voltage change-over switch SV2; 7 pin connect; 9 of the 3rd leading-out terminal of miniature circuit breaker CB4 and voltage change-over switch SV2; 11 pin connect; 2 of voltage change-over switch SV2; 6; 10 pin are connected with the end of voltage table 4PV jointly; 4 of voltage change-over switch SV2; 8; 12 pin are connected with the other end of voltage table 4PV jointly; three leading-out terminals of miniature circuit breaker CB4 are in conjunction with a lead-in wire of the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; be marked as the YL4 cable, be used to export three-phase AC380V debugging power supply and provide short circuit and overload protection.Voltage table 4PV shows alternating voltage numerical value.
Described superpotential warning function loop comprises multifunctional digital voltage table 5PV, for a long time instrument LS and relay K A, and in the present embodiment, described multifunctional digital voltage table 5PV adopts PZ194U-9S4J, and for a long time instrument LS adopts SC3L.1,2,11～14 pin of multifunctional digital voltage table 5PV insert three phase ac voltage regulation unsteady flow loop, 28 pin of multifunctional digital voltage table 5PV are succeeded an end of the normally opened contact of electrical equipment KA, another termination of the normally opened contact of relay K A is 2 pin of instrument LS for a long time, and for a long time 1 pin of instrument LS connects 29 pin of multifunctional digital voltage table 5PV.The 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the one termination incoming relay-protection loop of the coil of relay K A, the other end of the coil of relay K A is marked as the YL5 cable, is connected with test specimen, is used to detect the test specimen state.Multifunctional digital voltage table 5PV provides superpotential to report to the police and post a letter to instrument LS for a long time, by instrument LS timing for a long time and show time numerical value.
Described three phase ac voltage regulation unsteady flow loop comprises miniature circuit breaker CB5, CB51, CB52, pilot lamp 5HL, pressure regulator T3, transformer T4, knob SA and reometer 1PA, 2PA, 3PA, in the present embodiment, described pressure regulator T3 adopts TSGC2, transformer T4 adopts SG-400, and knob SA adopts LXA39.First of described miniature circuit breaker CB5; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; first leading-out terminal of miniature circuit breaker CB5 and the end of pilot lamp 5HL; 1 pin of multifunctional digital voltage table 5PV in the first input end of pressure regulator T3 and the superpotential warning function loop connects; 2 of the other end of pilot lamp 5HL and multifunctional digital voltage table 5PV; 14 pin tap into the 4th leading-out terminal of line protection miniature circuit breaker CB1 jointly; second of pressure regulator T3; the 3rd input end respectively with second of miniature circuit breaker CB5; the 3rd leading-out terminal connects; primary coil first end of incoming cables of first output terminal of pressure regulator T3 and transformer T4; 11 pin of first end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil second end of incoming cables of second output terminal of pressure regulator T3 and transformer T4; 12 pin of second end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil the 3rd end of incoming cables of the 3rd output terminal of pressure regulator T3 and transformer T4; 13 pin of the 3rd end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; the secondary coil first of transformer T4; second; the 3rd leading-out terminal respectively with first of knob SA; second; the 3rd input end connects; the secondary coil the 4th of transformer T4; the 5th; the 6th leading-out terminal respectively with the 4th of knob SA; the 5th; the 6th input end connects; the first and the 4th output terminal of knob SA connects with the input end of reometer 1PA; the second and the 5th output terminal of knob SA connects with the input end of reometer 2PA; the the 3rd and the 6th output terminal of knob SA connects with the input end of reometer 3PA; reometer 1PA; 2PA; the output terminal of 3PA respectively with first of miniature circuit breaker CB52; second; the 3rd end of incoming cables connects, and primary coil the 4th end of incoming cables of the 4th end of incoming cables of pressure regulator T3 and transformer T4 connects with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1.First, second, third leading-out terminal of miniature circuit breaker CB51 is marked as the YL6 cable in conjunction with the 4th leading-out terminal lead-in wire of incoming relay-protection miniature circuit breaker CB1, is used to provide three-phase AC0～450V to exchange and can debugs power supply.First, second, third leading-out terminal of miniature circuit breaker CB52 is marked as the YL7 cable in conjunction with the 4th leading-out terminal of transformer T4, is used to provide three-phase 0～10A adjustable current power supply.Multifunctional digital voltage table 5PV in the voltage alarm functional loop is connected with this circuit, but display voltage numerical value.Reometer 1PA, 2PA, 3PA are used to indicate the size of current values.
Described DC220V direct current power supply loop comprises miniature circuit breaker CB6, CB61, CB62, CB63, CB64, pilot lamp 6HL, transformer T5, bridge heap V1, voltage table 6PV, diode V2, V3, resistance R 1 and capacitor C 1, in the present embodiment, described transformer T5 adopts JBK3-630, and bridge heap V1 adopts KBPC3510.First leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of described miniature circuit breaker CB6 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB6 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB6 is connected with an end of the primary coil of the end of pilot lamp 6HL and transformer T5; another leading-out terminal of miniature circuit breaker CB6 is connected with the other end of the primary coil of the other end of pilot lamp 6HL and transformer T5; one end of the secondary coil of transformer T5 is connected with the input end of bridge heap V1; the other end of the secondary coil of transformer T5 is connected with another input end of bridge heap V1; the output terminal of bridge heap V1 and the end of voltage table 6PV; the end of incoming cables of miniature circuit breaker CB61; the end of incoming cables of miniature circuit breaker CB62; the end of incoming cables of miniature circuit breaker CB63 and the end of incoming cables of miniature circuit breaker CB64 connect; another output terminal of bridge heap V1 and the other end of voltage table 6PV; another end of incoming cables of miniature circuit breaker CB61; another end of incoming cables of miniature circuit breaker CB62; another end of incoming cables of another end of incoming cables of miniature circuit breaker CB63 and miniature circuit breaker CB64 connects; the leading-out terminal of miniature circuit breaker CB61 is connected with an end of the negative pole of diode V2 and resistance R 1; the other end of the positive pole of diode V2 and resistance R 1; the positive pole of the negative pole of diode V3 and capacitor C 1 connects, and the positive pole of diode V3 is connected with the negative pole of capacitor C 1 and another leading-out terminal of miniature circuit breaker CB61.Two leading-out terminals of miniature circuit breaker CB62 are marked as the YL8 cable, are used to provide DC220V control bus power supply; Two leading-out terminals of miniature circuit breaker CB63 are marked as the YL9 cable, are used to provide DC220V signal bus power supply; Two leading-out terminals of miniature circuit breaker CB64 are marked as the YL10 cable, are used to provide closing bus bar direct current debugging power supply.Miniature circuit breaker CB61, CB62, CB63, CB64 also are used to provide short circuit and overload protection.Voltage table 6PV is used for display voltage numerical value.
Please consult Fig. 1 again, the correlation function of present design is described further.When debugging products such as low-voltage-powered case, the fixed switch cubicle of low pressure and low pressure draw out switchgear cabinet when needs, YL4, the YL7 cable of debugging dolly are inserted respectively by trial product major loop and current measurement circuit, closed miniature circuit breaker CB4, pilot lamp 4HL lights, for three-phase AC380V is provided by trial product experiment power supply; Closed miniature circuit breaker CB5 of while and CB52, pilot lamp 5HL lights, and knob SA puts " I " position, and adjusts pressure regulator T3 on request to desired location, for three-phase 0～10A is provided by trial product adjustable current.When needs debugging low-voltage miniature opertaing device product, YL1, the YL3 cable of debugging dolly are inserted tested control of product loop, the YL4 cable is inserted by the trial product major loop, closed miniature circuit breaker CB2, pilot lamp 2HL lights, observe the indicated voltage value of voltage table 1PV, closed again miniature circuit breaker CB21 is for being provided DC24V direct supply by trial product; Closed miniature circuit breaker CB3, pilot lamp 3HL lights, and voltage table 3PV instructed voltage numerical value is for being provided single-phase AC220V debugging power supply by trial product; Closed miniature circuit breaker CB4, pilot lamp 4HL lights, and rotates switch SV2, observes the indicated voltage value of voltage table 4PV, for three-phase AC380V debugging power supply is provided by trial product.When pressing 10KV AC metal armouring draw out switchgear cabinet product in the needs debugging, the YL2 cable of debugging dolly is inserted by the voltage measurement circuit of trial product, the YL7 cable is inserted by the current measurement circuit of trial product, YL8, YL9, YL10 cable difference Access Control bus, signal bus, closing bus bar binding post, closed miniature circuit breaker CB2, pilot lamp 2HL lights, rotate switch SV1, observe the numerical value of voltage table 2PV indication, closed miniature circuit breaker CB22 is for being provided three-phase AC100V debugging power supply by trial product.Closed miniature circuit breaker CB5, pilot lamp 5HL lights, and knob SA puts " I " position, and closed miniature circuit breaker CB52 adjusts pressure regulator T3 on request to desired location, for three-phase 0～10A is provided by trial product adjustable current.Closed miniature circuit breaker CB6, pilot lamp 6HL lights, closed miniature circuit breaker CB61, when the numerical value of voltage table 6PV indication just often, closed again miniature circuit breaker CB62, CB63, CB64 are respectively by trial product DC220V control bus power supply, DC220V signal bus power supply and DC220V closing bus bar power supply are provided.When needs debugging low-voltage reactive compensator capable product, the YL5 of debugging dolly, YL6, the YL7 cable inserts respectively by trial product " three-phase overvoltage cutoff sampled point " (last reactive-load compensation loop, road), major loop, current sampling circuit, closed miniature circuit breaker CB5, pilot lamp 5HL lights, adjust pressure regulator T3 on request to desired location, observe the numerical value that multifunctional digital voltage table 5PV shows, closed miniature circuit breaker CB51, can debug power supply for provided three-phase AC0～450V to exchange by trial product, closed miniature circuit breaker CB52 of while is for being provided three-phase 0～10A adjustable current power supply by trial product.Can progressively be dropped into capacitor by the reactive power self-compensating controlling device on the trial product this moment; after the container that powered on by trial product all drops into; the normally opened contact closure of relay K A; adjust pressure regulator T3; make output voltage values reach 450V; this moment, multifunctional digital voltage table 5PV reported to the police; for a long time the numerical value of instrument LS demonstration increases; Deng by the capacitor complete resection on the trial product time; the normally opened contact of relay K A discharges, and for a long time instrument LS stops timing, checks the numerical value on the instrument LS for a long time; if be not more than 60 seconds, then the reactive power self-compensating controlling device over-voltage protection function on the test specimen is qualified
Claims (9)
1.
A kind of multi-functional debugging dolly; it is characterized in that: comprise the incoming relay-protection loop; DC24V voltage output loop; three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop; the external three-phase four-wire power of input end in described incoming relay-protection loop; the output terminal in incoming relay-protection loop and three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop connect; described DC24V voltage output loop is connected with three-phase AC100V voltage output loop, and three phase ac voltage regulation unsteady flow loop is connected with superpotential warning function loop.
2.
Multi-functional debugging dolly according to claim 1; it is characterized in that described incoming relay-protection loop comprises incoming relay-protection miniature circuit breaker CB1 and power light 1HL; four tunnel ends of incoming cables of incoming relay-protection miniature circuit breaker CB1 successively with the A phase line of three-phase four-wire power; the B phase line; C phase line and N phase line connect; the PE line of three-phase supply is connected with the ground connection row of debugging dolly; the leading-out terminal of incoming relay-protection miniature circuit breaker CB1 and three-phase AC100V voltage output loop; single-phase AC220V voltage output loop; three-phase AC380V voltage output loop; superpotential warning function loop; three phase ac voltage regulation unsteady flow loop and DC220V direct current power supply loop connect; first leading-out terminal of the termination incoming relay-protection miniature circuit breaker CB1 of power light 1HL, the other end of power light 1HL tap into second leading-out terminal of line protection miniature circuit breaker CB1.
3.
Multi-functional debugging dolly according to claim 1, it is characterized in that described DC24V voltage output loop comprises Switching Power Supply UR, voltage table 1PV and miniature circuit breaker CB21, the L end of Switching Power Supply UR, N end respectively with three-phase AC100V voltage output loop in first leading-out terminal of miniature circuit breaker CB2 be connected with second leading-out terminal, the positive output end of Switching Power Supply UR is connected with the end of voltage table 1PV and the end of incoming cables of miniature circuit breaker CB21, the negative output terminal of Switching Power Supply UR is connected with the other end of voltage table 1PV and another end of incoming cables of miniature circuit breaker CB21, two leading-out terminals of miniature circuit breaker CB21 are marked as the YL1 cable, are used to export DC24V debugging power supply.
4.
Multi-functional debugging dolly according to claim 1; it is characterized in that described three-phase AC100V voltage output loop comprises miniature circuit breaker CB2; CB22; transformer T1; T2; pilot lamp 2HL; voltage change-over switch SV1 and voltage table 2PV; first of miniature circuit breaker CB2; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; one end of the L end of the Switching Power Supply UR in first leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop and the primary coil of transformer T1 is connected; one end of the primary coil of the other end of the primary coil of transformer T1 and transformer T2; the N end of Switching Power Supply UR in second leading-out terminal of miniature circuit breaker CB2 and the DC24V voltage output loop connects; the other end of the primary coil of transformer T2 is connected with the 3rd leading-out terminal of miniature circuit breaker CB2 and the end of pilot lamp 2HL; the other end of pilot lamp 2HL is connected with the 4th leading-out terminal of miniature circuit breaker CB1; 1 of one end of the secondary coil of transformer T1 and voltage change-over switch SV1; first end of incoming cables of 3 pin and miniature circuit breaker CB22 connects; one end of the secondary coil of the other end of the secondary coil of transformer T1 and transformer T2; 5 of voltage change-over switch SV1; second end of incoming cables of 7 pin and miniature circuit breaker CB22 connects; 9 of the other end of the secondary coil of transformer T2 and voltage change-over switch SV1; the 3rd end of incoming cables of 11 pin and miniature circuit breaker CB22 connects; 2 of voltage change-over switch SV1; 6; 10 pin connect the end of voltage table 2PV jointly; 4 of voltage change-over switch SV1; 8; 12 pin connect the other end of voltage table 2PV jointly; three leading-out terminals of miniature circuit breaker CB22 are marked as the YL2 cable, are used to export three-phase AC100V debugging power supply.
5.
Multi-functional debugging dolly according to claim 1; it is characterized in that described single-phase AC220V voltage output loop comprises miniature circuit breaker CB3; voltage table 3PV and pilot lamp 3HL; first leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of miniature circuit breaker CB3 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB3 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB3 is connected with the end of the end of voltage table 3PV and pilot lamp 3HL; another leading-out terminal of miniature circuit breaker CB3 is connected with the other end of the other end of voltage table 3PV and pilot lamp 3HL; two leading-out terminals of miniature circuit breaker CB3 are marked as the YL3 cable, are used to export single-phase AC220V debugging power supply.
6.
Multi-functional debugging dolly according to claim 1; it is characterized in that described three-phase AC380V voltage output loop comprises miniature circuit breaker CB4; pilot lamp 4HL; voltage change-over switch SV2 and voltage table 4PV; first of miniature circuit breaker CB4; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; 1 of first leading-out terminal of miniature circuit breaker CB4 and the end of pilot lamp 4HL and voltage change-over switch SV2; 3 pin connect; 5 of second leading-out terminal of miniature circuit breaker CB4 and the other end of pilot lamp 4HL and voltage change-over switch SV2; 7 pin connect; 9 of the 3rd leading-out terminal of miniature circuit breaker CB4 and voltage change-over switch SV2; 11 pin connect; 2 of voltage change-over switch SV2; 6; 10 pin are connected with the end of voltage table 4PV jointly; 4 of voltage change-over switch SV2; 8; 12 pin are connected with the other end of voltage table 4PV jointly; three leading-out terminals of miniature circuit breaker CB4 are in conjunction with a lead-in wire of the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; be marked as the YL4 cable, be used to export three-phase AC380V debugging power supply.
7.
Multi-functional debugging dolly according to claim 1; it is characterized in that described superpotential warning function loop comprises multifunctional digital voltage table 5PV; for a long time instrument LS and relay K A; 1 of multifunctional digital voltage table 5PV; 2; 11～14 pin insert three phase ac voltage regulation unsteady flow loop; 28 pin of multifunctional digital voltage table 5PV are succeeded an end of the normally opened contact of electrical equipment KA; another termination of the normally opened contact of relay K A is 2 pin of instrument LS for a long time; for a long time 1 pin of instrument LS connects 29 pin of multifunctional digital voltage table 5PV; the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the one termination incoming relay-protection loop of the coil of relay K A; the other end of the coil of relay K A is marked as the YL5 cable, is used for being connected with test specimen.
8.
Multi-functional debugging dolly according to claim 1; it is characterized in that described three phase ac voltage regulation unsteady flow loop comprises miniature circuit breaker CB5; CB51; CB52; pilot lamp 5HL; pressure regulator T3; transformer T4; knob SA and reometer 1PA; 2PA; 3PA; first of described miniature circuit breaker CB5; second; the 3rd end of incoming cables respectively with the incoming relay-protection loop in incoming relay-protection miniature circuit breaker CB1 first; second; the 3rd leading-out terminal connects; first leading-out terminal of miniature circuit breaker CB5 and the end of pilot lamp 5HL; 1 pin of multifunctional digital voltage table 5PV in the first input end of pressure regulator T3 and the superpotential warning function loop connects; 2 of the other end of pilot lamp 5HL and multifunctional digital voltage table 5PV; 14 pin tap into the 4th leading-out terminal of line protection miniature circuit breaker CB1 jointly; second of pressure regulator T3; the 3rd input end respectively with second of miniature circuit breaker CB5; the 3rd leading-out terminal connects; primary coil first end of incoming cables of first output terminal of pressure regulator T3 and transformer T4; 11 pin of first end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil second end of incoming cables of second output terminal of pressure regulator T3 and transformer T4; 12 pin of second end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; primary coil the 3rd end of incoming cables of the 3rd output terminal of pressure regulator T3 and transformer T4; 13 pin of the 3rd end of incoming cables of miniature circuit breaker CB51 and multifunctional digital voltage table 5PV connect; the secondary coil first of transformer T4; second; the 3rd leading-out terminal respectively with first of knob SA; second; the 3rd input end connects; the secondary coil the 4th of transformer T4; the 5th; the 6th leading-out terminal respectively with the 4th of knob SA; the 5th; the 6th input end connects; the first and the 4th output terminal of knob SA connects with the input end of reometer 1PA; the second and the 5th output terminal of knob SA connects with the input end of reometer 2PA; the the 3rd and the 6th output terminal of knob SA connects with the input end of reometer 3PA; reometer 1PA; 2PA; the output terminal of 3PA respectively with first of miniature circuit breaker CB52; second; the 3rd end of incoming cables connects; primary coil the 4th end of incoming cables of the 4th end of incoming cables of pressure regulator T3 and transformer T4 taps into the 4th leading-out terminal of line protection miniature circuit breaker CB1 jointly; first of miniature circuit breaker CB51; second; the 3rd leading-out terminal is marked as the YL6 cable in conjunction with the 4th leading-out terminal lead-in wire of incoming relay-protection miniature circuit breaker CB1; be used to provide three-phase AC0～450V to exchange and debug power supply; first of miniature circuit breaker CB52; second; the 3rd leading-out terminal is in conjunction with the 4th leading-out terminal of transformer T4; be marked as the YL7 cable, be used to provide three-phase 0～10A adjustable current power supply.
9.
Multi-functional debugging dolly according to claim 1; it is characterized in that described DC220V direct current power supply loop comprises miniature circuit breaker CB6; CB61; CB62; CB63; CB64; pilot lamp 6HL; transformer T5; bridge heap V1; voltage table 6PV; diode V2; V3; resistance R 1 and capacitor C 1; first leading-out terminal of incoming relay-protection miniature circuit breaker CB1 in the end of incoming cables of described miniature circuit breaker CB6 and the incoming relay-protection loop is connected; another end of incoming cables of miniature circuit breaker CB6 is connected with the 4th leading-out terminal of incoming relay-protection miniature circuit breaker CB1; the leading-out terminal of miniature circuit breaker CB6 is connected with an end of the primary coil of the end of pilot lamp 6HL and transformer T5; another leading-out terminal of miniature circuit breaker CB6 is connected with the other end of the primary coil of the other end of pilot lamp 6HL and transformer T5; one end of the secondary coil of transformer T5 is connected with the input end of bridge heap V1; the other end of the secondary coil of transformer T5 is connected with another input end of bridge heap V1; the output terminal of bridge heap V1 and the end of voltage table 6PV; the end of incoming cables of miniature circuit breaker CB61; the end of incoming cables of miniature circuit breaker CB62; the end of incoming cables of miniature circuit breaker CB63 and the end of incoming cables of miniature circuit breaker CB64 connect; another output terminal of bridge heap V1 and the other end of voltage table 6PV; another end of incoming cables of miniature circuit breaker CB61; another end of incoming cables of miniature circuit breaker CB62; another end of incoming cables of another end of incoming cables of miniature circuit breaker CB63 and miniature circuit breaker CB64 connects; the leading-out terminal of miniature circuit breaker CB61 is connected with an end of the negative pole of diode V2 and resistance R 1; the other end of the positive pole of diode V2 and resistance R 1; the positive pole of the negative pole of diode V3 and capacitor C 1 connects; the positive pole of diode V3 is connected with the negative pole of capacitor C 1 and another leading-out terminal of miniature circuit breaker CB61; two leading-out terminals of miniature circuit breaker CB62 are marked as the YL8 cable; be used to provide DC220V control bus power supply; two leading-out terminals of miniature circuit breaker CB63 are marked as the YL9 cable; be used to provide DC220V signal bus power supply; two leading-out terminals of miniature circuit breaker CB64 are marked as the YL10 cable, are used to provide closing bus bar direct current debugging power supply
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149479A (en) * | 2013-02-21 | 2013-06-12 | 常熟市森源电气科技有限公司 | Multifunctional debugging trolley |
| CN103487681A (en) * | 2013-09-11 | 2014-01-01 | 苏州市龙源电力科技股份有限公司 | Alternating current voltage-adjusting resistor cart |
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN106300346A (en) * | 2016-09-28 | 2017-01-04 | 江苏恒创软件有限公司 | A kind of with protected converter maintenance supply unit |
| CN106526349A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light-weight three-phase voltage and current generator |
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2013
- 2013-02-21 CN CN 201320080275 patent/CN203101556U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149479A (en) * | 2013-02-21 | 2013-06-12 | 常熟市森源电气科技有限公司 | Multifunctional debugging trolley |
| CN103487681A (en) * | 2013-09-11 | 2014-01-01 | 苏州市龙源电力科技股份有限公司 | Alternating current voltage-adjusting resistor cart |
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN104793028B (en) * | 2015-04-30 | 2017-12-15 | 中国一冶集团有限公司 | A kind of three-phase multifunctional test power device and its test method |
| CN106526349A (en) * | 2015-09-15 | 2017-03-22 | 国网辽宁省电力有限公司沈阳供电公司 | Light-weight three-phase voltage and current generator |
| CN106526349B (en) * | 2015-09-15 | 2018-03-06 | 国网辽宁省电力有限公司沈阳供电公司 | Light-duty three-phase voltage current generator |
| CN106300346A (en) * | 2016-09-28 | 2017-01-04 | 江苏恒创软件有限公司 | A kind of with protected converter maintenance supply unit |
| CN106300346B (en) * | 2016-09-28 | 2019-02-26 | 江苏恒创软件有限公司 | A kind of frequency converter maintenance power supply device with protection |
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