CN204145015U - Electrical test special mobile power supply - Google Patents
Electrical test special mobile power supply Download PDFInfo
- Publication number
- CN204145015U CN204145015U CN201420598947.2U CN201420598947U CN204145015U CN 204145015 U CN204145015 U CN 204145015U CN 201420598947 U CN201420598947 U CN 201420598947U CN 204145015 U CN204145015 U CN 204145015U
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- switch
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- plate
- power supply
- inverter
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Abstract
The utility model discloses a kind of electrical test special mobile power supply, relate to electric power system technical field of tools.Comprise the lithium rechargeable batteries group in shell and shell, cell switch, electric quantity display plate, charger, power supply output board, inverter, Control plate, power protection plate, safeguard protection plate, earth leakage circuit-breaker, static switch, voltmeter, ammeter, maintenance bypass switch and by-pass switch; Be divided into three tunnels: the charger of the first via is connected with lithium rechargeable batteries group with electricity switch by electric quantity display plate in parallel, the minus earth of lithium rechargeable batteries, the output of electric quantity display plate and electricity switch connects static switch after series-connection power supplies output board, inverter, inverter control plate, Control plate, power protection plate, safeguard protection plate and earth leakage circuit-breaker successively, and static switch connects ac output end; Second tunnel connects by-pass switch, and by-pass switch connects the static switch of the first via; Ac output end connects one end of voltmeter, the other end ground connection of voltmeter.
Description
Technical field
The utility model relates to a kind of electric power system technical field of tools.
Background technology
Transformer station's testing operation working site must use 220V experiment power supply, therefore needs to carry out connecing of experiment power supply frequently in working site and draws work.But field test power supply box distance test (DT) equipment is far away, and disconnect trouble, cause whole test duration longer, be connected with 2 to 3 cable axles when connecing 220V experiment power supply when sometimes working at the scene, operate very inconvenient, and also will pass through fence that operations staff does, cable junction time longer and trouble.
Also be not exclusively used in the portable power source of transformer station's test at present, therefore, in order to solve the problem, we have made simple and easy portable power source, be made up of automobile storage battery and inverter, but because automobile storage battery capacity is less, high voltage test requires higher to test voltage, make voltage output frequency voltage waveform when voltage reduces unstable, easily cause test data accuracy low, and automobile storage battery service time is short, volume is comparatively large, heavier-weight, cause puzzlement to whole test and carrying is got up also inconvenient.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electrical test special mobile power supply, for power transformation test provides special mobile power supply, volume is little, lightweight, easy to use, reduce the loaded down with trivial details time and the labour intensity that disconnect experiment power supply, decrease power failure test duration, improve operating efficiency, facilitate work on the spot and carry out efficiently smoothly.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of electrical test special mobile power supply, comprises the lithium rechargeable batteries group in shell and shell, cell switch, electric quantity display plate, charger, power supply output board, inverter, Control plate, power protection plate, safeguard protection plate, earth leakage circuit-breaker, static switch, voltmeter, ammeter, maintenance bypass switch and by-pass switch; 220V ac input end connects 220V ac output end respectively by three tunnels of parallel connection: the first via connects charger, charger is connected with lithium rechargeable batteries group with electricity switch by electric quantity display plate in parallel, the minus earth of described lithium rechargeable batteries, the output of described electric quantity display plate and electricity switch connects static switch after series-connection power supplies output board, inverter, inverter control plate, Control plate, power protection plate, safeguard protection plate and earth leakage circuit-breaker successively, and static switch connects ac output end; Second tunnel connects by-pass switch, and by-pass switch connects the static switch of the first via; Ac output end is connect after 3rd tunnel connects maintenance bypass switch and ammeter; Described ac output end connects one end of voltmeter, the other end ground connection of voltmeter.
Further technical scheme, the model of described inverter is PROWATT.
Further technical scheme, the model of described charger is AVIO.
The beneficial effect adopting technique scheme to produce is: the utility model is that power transformation test provides special mobile power supply, volume is little, lightweight, easy to use, reduce the loaded down with trivial details time and the labour intensity that disconnect experiment power supply, decrease power failure test duration, improve operating efficiency, facilitate work on the spot and carry out efficiently smoothly; Adopt lithium rechargeable batteries as power supply, can provide the burning voltage meeting transformer station's test requirements document, and volume is little, lightweight, the charging interval is short, service time is long, can meet various instrument test in transformer station; Be provided with earth leakage protective device, fail safe is high, effectively prevent low-voltage from getting an electric shock and leak electricity cause the person, electrically, the accident such as fire and electric equipment damage; Be provided with voltmeter, ammeter and electric quantity display plate, can at the voltage of display floater display power supply, electric current, with the capacity of battery, operating personnel are made to grasp power conditions in time, timely charging, and prevent from causing damage to instrument and equipment, accurate experimental technique data can be provided for operating personnel simultaneously; Direct current changes into and exchanges pure sine wave and export by the inverter be provided with, and overcomes square wave, revising ripple can not translator class inductive load and the shortcoming such as conversion efficiency is low.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model;
Fig. 2 is the utility model structure of liquid crystal display panel schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, electrical test special mobile power supply, comprises the lithium rechargeable batteries group in shell and shell, cell switch, electric quantity display plate, charger, power supply output board, inverter, Control plate, power protection plate, safeguard protection plate, earth leakage circuit-breaker, static switch, voltmeter, ammeter, maintenance bypass switch and by-pass switch; 220V ac input end connects 220V ac output end respectively by three tunnels of parallel connection: the first via connects charger, charger is connected with lithium rechargeable batteries group with electricity switch by electric quantity display plate in parallel, the minus earth of lithium rechargeable batteries, the output of electric quantity display plate and electricity switch connects static switch after series-connection power supplies output board, inverter, inverter control plate, Control plate, power protection plate, safeguard protection plate and earth leakage circuit-breaker successively, and static switch connects ac output end; Second tunnel connects by-pass switch, and by-pass switch connects the static switch of the first via; Ac output end is connect after 3rd tunnel connects maintenance bypass switch and ammeter; Ac output end connects one end of voltmeter, the other end ground connection of voltmeter.The model of inverter is PROWATT.The model of charger is AVIO.As shown in Figure 2, shell is provided with the display panels of voltage and current, the measured value of display voltmeter and ammeter.The electric quantity display plate be provided with also can show dump energy on housing face-plate.
Ac output end exports the alternating voltage of 220V/50Hz, and ac input end provides 220V/50Hz power supply.Using front charger to connect ac input end, is lithium rechargeable batteries charging; During use, inverter changes the direct current of lithium rechargeable batteries into alternating current, exports through ac output end.Power protection plate plays inversion protection, and safeguard protection plate can trip when output fault, further protective circuit.The voltage and current of voltmeter and ammeter difference testing circuit, and shown in real time by the display panels on shell, as shown in Figure 2.The whole circuit of inverter can be divided into two large divisions substantially, every part adopts a TL494 or KA7500 chip composition control circuit, wherein the effect of Part I circuit is the 24V direct current provided by lithium rechargeable batteries etc., is converted to the alternating current of about 30kHz-50kHz, 220V by high-frequency PWM (pulse-width modulation) switch power technology; The effect of Part II circuit is then utilize the technology such as bridge rectifier, filtering, pulse-width modulation and switch power output, the alternating current of 30kHz ~ 50kHz, about 220V is converted to the alternating current of 50Hz, 220V.
The utility model is convenient to use, substantially reduces test duration, saves manpower, shortens the operating time.Adopt lithium rechargeable batteries as power supply, compared with storage battery, volume is little, lightweight, makes whole device be convenient to mobile and carrying.The utility model can be applied to multiple pilot projects such as withstand voltage test, leakage current of an arrester test, dielectric loss measurement, capacitance current test.
Claims (3)
1. an electrical test special mobile power supply, is characterized in that the lithium rechargeable batteries group, cell switch, electric quantity display plate, charger, power supply output board, inverter, Control plate, power protection plate, safeguard protection plate, earth leakage circuit-breaker, static switch, voltmeter, ammeter, maintenance bypass switch and the by-pass switch that comprise in shell and shell; 220V ac input end connects 220V ac output end respectively by three tunnels of parallel connection: the first via connects charger, charger is connected with lithium rechargeable batteries group with electricity switch by electric quantity display plate in parallel, the minus earth of described lithium rechargeable batteries, the output of described electric quantity display plate and electricity switch connects static switch after series-connection power supplies output board, inverter, inverter control plate, Control plate, power protection plate, safeguard protection plate and earth leakage circuit-breaker successively, and static switch connects ac output end; Second tunnel connects by-pass switch, and by-pass switch connects the static switch of the first via; Ac output end is connect after 3rd tunnel connects maintenance bypass switch and ammeter; Described ac output end connects one end of voltmeter, the other end ground connection of voltmeter.
2. electrical test special mobile power supply according to claim 1, is characterized in that the model of described inverter is PROWATT.
3. electrical test special mobile power supply according to claim 1, is characterized in that the model of described charger is AVIO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598947.2U CN204145015U (en) | 2014-10-16 | 2014-10-16 | Electrical test special mobile power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598947.2U CN204145015U (en) | 2014-10-16 | 2014-10-16 | Electrical test special mobile power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145015U true CN204145015U (en) | 2015-02-04 |
Family
ID=52421680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420598947.2U Expired - Fee Related CN204145015U (en) | 2014-10-16 | 2014-10-16 | Electrical test special mobile power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145015U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788687A (en) * | 2016-05-18 | 2016-07-20 | 中国核动力研究设计院 | Reactor protection system two-out-of-three conforming maintenance bypass system |
| CN110460033A (en) * | 2019-08-23 | 2019-11-15 | 李芝宏 | A kind of the maintainability test DC power system and method for low ripple |
-
2014
- 2014-10-16 CN CN201420598947.2U patent/CN204145015U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788687A (en) * | 2016-05-18 | 2016-07-20 | 中国核动力研究设计院 | Reactor protection system two-out-of-three conforming maintenance bypass system |
| CN110460033A (en) * | 2019-08-23 | 2019-11-15 | 李芝宏 | A kind of the maintainability test DC power system and method for low ripple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20211016 |