CN206147057U - Inconsistent time relay calibration equipment of three -phase - Google Patents
Inconsistent time relay calibration equipment of three -phase Download PDFInfo
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- CN206147057U CN206147057U CN201621074407.XU CN201621074407U CN206147057U CN 206147057 U CN206147057 U CN 206147057U CN 201621074407 U CN201621074407 U CN 201621074407U CN 206147057 U CN206147057 U CN 206147057U
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Abstract
The utility model relates to the field of electronic technology, especially, the test, the calibration equipment that relate to the inconsistent time relay of three -phase. An inconsistent time relay calibration equipment of three -phase, includes the AD conversion module of MCU and electricity connection with it, DA output module, liquid crystal display module and power module, the external multichannel voltage and current sampling circuit of AD conversion module, voltage and current sampling circuit pass through connector with outside by the electroscope even, DA output module, set up multichannel analog current output circuit, by MCU control output, power module be provided with external power connecting circuit and inside battery powered two way powers, switching of power can carry out, liquid crystal display module shows test data by MCU control connection. Realize arbitrary adjustable voltage current output, the coil pressure drop of accurate analysis and detection relay is worth, detects mains voltage, electric current, operating voltage, electric current, return voltage, electric current.
Description
Technical field
The utility model is related to electronic technology field, more particularly to test, the verification dress of the unbalanced three-phase lines time relay
Put.
Background technology
The new requirement for sending out definite value is adjusted during power equipment regular inspection or according to middle, needs to carry out breaker three-phase to differ
Cause time check and adjustment, traditional method of calibration be unbalanced three-phase lines relay is pulled down after carry out school with protection test instrument
Test, due to without special secondary connection, causing wiring inconvenient, there is loose contact, direct-current short circuit risk, and need many
People coordinate, test result can because test connection it is incorrect or loosen cause it is inaccurate, if once the phenomenon that is short-circuited, having can
Relay can be burnt out, causes work to be normally carried out, increase power off time, be unfavorable for the safety and stability of electrical network.This tradition
Method tests the time that a unbalanced three-phase lines relay generally requires more than half a hour, and operating efficiency is relatively low.
The content of the invention
The utility model purpose is a kind of device suitable for the verification of various unbalanced three-phase lines time relays of design, can
An efficient device is provided for the verification of the unbalanced three-phase lines time relay.
Design of the present utility model is as follows：A kind of unbalanced three-phase lines time relay calibration equipment, including MCU and with
Electrical connection A/D modular converters, D/A output modules, LCD MODULE and power module；Outside described A/D modular converters
Plurality of voltages current sampling circuit is connect, voltage x current sample circuit is connected with outside by electric wire connecting junction by electricity measurer, sampled voltage,
Current value exports MCU after conversion；Described D/A output modules, arrange multi-channel analog current output circuit, by MCU controls
Output；Described power module is provided with externally fed connection circuit and internal battery powers two-way power supply, can carry out power supply and cut
Change；The LCD MODULE is connected by MCU controls, shows test data.
Plurality of voltages current sampling circuit, can gather the multichannel AC magnitude of current, to multiple unbalanced three-phase lines time relays
Tested.Simultaneously multi-channel analog current output module, exports stable analog current, can be while the different electricity of output multi-channel
Stream, by MCU controlled output size is adjusted.By the timer inside MCU, detection relay actuation time timing is realized.
The utility model realizes any adjustable voltage electric current output, accurately the coil voltage drop value of analysis detection relay, inspection
Survey supply voltage, electric current, operation voltage, electric current, return voltage, electric current.Electric wire connecting junction can arrange the electric wire connecting junction of the different modes of connection,
The different types of unbalanced three-phase lines time relay is can adapt to, easy-to-connect, testing efficiency is high, there is no the wind of direct-current short circuit
Danger.
Description of the drawings
Fig. 1 is system structure diagram of the present utility model.
Specific embodiment
With reference to specific embodiment and Figure of description, the utility model is described in further detail.Tool described herein
Body embodiment only to explain the utility model, is not used to limit the utility model.
Embodiment：As shown in figure 1, a kind of unbalanced three-phase lines time relay calibration equipment, by MCU and it is electrically connected
A/D modular converters, D/A output modules, LCD MODULE and power module are constituted.The external Multi-path electricity piezoelectricity of A/D modular converters
Stream sample circuit, voltage x current sample circuit is connected with outside by electric wire connecting junction by electricity measurer, and sampled voltage, current value are through turning
MCU is exported after changing.Each electric wire connecting junction arranges the different types of mode of connection, can adapt to the different types of unbalanced three-phase lines time
Relay, wiring is convenient.A/D modular converters adopt 16bit high-precision As/D-module, accurately the line of analysis detection relay
Circle voltage drop value, detection supply voltage, electric current, operation voltage, electric current, return voltage, electric current.
Power module is provided with externally fed connection circuit and internal battery powers two-way power supply, is supplied using outside 220VAC
Electricity and internal battery powers, can carry out power supply switching, can use where without external power supply.
Described D/A output modules, arrange multi-channel analog current output circuit, high using 16bit by MCU controlled outputs
The high and stable analog current of precision (D/A) output accuracy；Realize that any adjustable voltage electric current of software is exported, output area,
0～220V of voltage, 0～5A of electric current, voltage output resolution ratio can reach 0.1V, and electric current output resolution ratio can reach 0.01A.
The LCD MODULE is connected by MCU controls, shows test data, uses TFT liquid crystal displays, directly perceived, quick and easy
Man-machine interface.
Suitable for verifying to various unbalanced three-phase lines time relays, easy-to-connect improves test effect to this device
Rate, the risk that there is no direct-current short circuit.High-precision electric current, power detecting and output are realized, is unbalanced three-phase lines time relay
The verification of device provides an efficient device.
Above-mentioned whole embodiments, do not constitute and the whole of the technical program protection are limited.It is any in above-mentioned enforcement
Say that the modification of work, replacement all should belong to protection domain comprising the technical solution of the utility model within the spiritual principles of mode.
Claims (1)
1. a kind of unbalanced three-phase lines time relay calibration equipment, it is characterised in that turn including MCU and the A/D being electrically connected
Mold changing block, D/A output modules, LCD MODULE and power module；The external plurality of voltages electric current of described A/D modular converters is adopted
Sample circuit, voltage x current sample circuit is connected with outside by electric wire connecting junction by electricity measurer, and sampled voltage, current value are after conversion
Output MCU；Described D/A output modules, arrange multi-channel analog current output circuit, by MCU controlled outputs；Described power supply mould
Block is provided with externally fed connection circuit and internal battery powers two-way power supply, can carry out power supply switching；The liquid crystal display mode
Block is connected by MCU controls, shows test data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074407.XU CN206147057U (en) | 2016-09-15 | 2016-09-15 | Inconsistent time relay calibration equipment of three -phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621074407.XU CN206147057U (en) | 2016-09-15 | 2016-09-15 | Inconsistent time relay calibration equipment of three -phase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206147057U true CN206147057U (en) | 2017-05-03 |
Family
ID=58619926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621074407.XU Expired - Fee Related CN206147057U (en) | 2016-09-15 | 2016-09-15 | Inconsistent time relay calibration equipment of three -phase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206147057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687386A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Three-phase inconsistent protection test box for circuit breaker body |
| CN114690031A (en) * | 2022-05-30 | 2022-07-01 | 广东电网有限责任公司佛山供电局 | Setting method and device for three-phase inconsistent time relay of circuit breaker |
-
2016
- 2016-09-15 CN CN201621074407.XU patent/CN206147057U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687386A (en) * | 2019-11-05 | 2020-01-14 | 国网山西省电力公司阳泉供电公司 | Three-phase inconsistent protection test box for circuit breaker body |
| CN110687386B (en) * | 2019-11-05 | 2022-04-19 | 国网山西省电力公司阳泉供电公司 | Three-phase inconsistent protection test box for circuit breaker body |
| CN114690031A (en) * | 2022-05-30 | 2022-07-01 | 广东电网有限责任公司佛山供电局 | Setting method and device for three-phase inconsistent time relay of circuit breaker |
| CN114690031B (en) * | 2022-05-30 | 2022-08-09 | 广东电网有限责任公司佛山供电局 | Setting method and device for three-phase inconsistent time relay of circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20170915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |