CN2362137Y - Power supply load ability tester - Google Patents
Power supply load ability tester Download PDFInfo
- Publication number
- CN2362137Y CN2362137Y CN 98247597 CN98247597U CN2362137Y CN 2362137 Y CN2362137 Y CN 2362137Y CN 98247597 CN98247597 CN 98247597 CN 98247597 U CN98247597 U CN 98247597U CN 2362137 Y CN2362137 Y CN 2362137Y
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- fan
- utility
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- plug
- potentiometer
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a measuring apparatus for the load ability of power supply, which is mainly used for measuring loss in the power supply and early discovering the hidden trouble of fire accidents. The utility model is composed of a potentiometer (1), a current limiting resistor (2), a magnetoelectric meter head (3), a normally opened button switch (4), a load electric stove wire (5), a plug (6), and a fan (7), wherein, the potentiometer (1), the current limiting resistor (2), and the magnetoelectric meter head (3) are connected between both poles of the plug (6) in series, and the fan (7) and the load electric stove wire (5) are connected between both poles of the plug (6) in parallel; the normally opened button switch (4) is connected between the fan (7) and the load electric stove wire (5) in series. The utility model has the advantages of easy purchase for raw materials and wide application. The utility model is used for a necessary measuring item for the completion of construction work and a regular measuring item for the existing electricity supplying circuits for an electricity supplying department.
Description
The utility model relates to a kind of power source loads ability measurement instrument.
At present, the embedded power lead in the construction work can't be found out its construction quality quality with direct-vision method, will carry out electrical before being delivered for use.Existing method mainly is to check in the supply socket hole with electroscope whether the 220V alternating voltage is arranged.Though this method is very easy, can only reflect has no-voltage, but can not find out " load capacity " that this supply socket is external.When the user uses high-power electric appliance, tend to produce voltage and descend and to reach terminal etc. too greatly and locate situations such as Fire Overheat, very unfavorable to normal safety utilization of electric power.Still the end has the detecting instrument of this respect to sell in the market.
The utility model is found fire failure hidden danger early for the internal loss that can detect power supply reaches, and a kind of power source loads ability measurement instrument is provided.Its purposes is a: the open-circuit voltage that detects supply socket place; Power source loads ability when b uses high power load.
The purpose of this utility model can realize by following measure: the utility model is made up of potentiometer, current-limiting resistance, magneto-electric gauge outfit, normally open push button switch, load electric furnace heating wire, plug and fan; Connect between the two poles of the earth of plug potentiometer, current-limiting resistance and magneto-electric gauge outfit, and be connected in parallel between the two poles of the earth in fan, load electric furnace heating wire, between fan and load electric furnace heating wire, be in series with normally open push button switch,
The gauge outfit face of above-mentioned magneto-electric gauge outfit is provided with 0 to 240V voltage indicated number, is provided with the voltage drop indicated number simultaneously.
A, when " power source loads measuring instrument " when linking by the supply socket on attaching plug and the wall, switch is in open mode, place the position of resistance minimum with the potentiometer of switch gearing, normally open push button switch also is in open mode, and gauge outfit is positioned at the minimum left side of indication.The original state of Here it is measuring instrument.
B, begin to measure, open switch earlier, gang potentiometer still places the resistance minimum position, and normally open push button switch is not eager to press.This moment, gauge outfit can indicate corresponding supply socket open-circuit voltage on dial plate.
C, open-circuit voltage count up to the back to adjust the resistance of (increase) potentiometer, make a meter pointer left side put " measurement zero-bit " on the special dial plate, press normally open push button switch again, connect the electric current of electric furnace heating wire, angle of meter pointer deflection left this moment, the size of this deflection angle is the function of supply socket load capacity.Deflection angle is little, and then the power source loads ability is strong.Deflection angle is big, and power source loads ability then illustrate that this supply socket should not use high-power electric appliance, or explanation supply socket back panel wiring is in bad order.So just realized measurement to " power source loads ability ".
Advantage of the present utility model: " power source loads ability measurement instrument " belongs to conventional electronic product, and production requirement is low, and choosing of starting material, parts is not subjected to any restriction, and wide material sources are so the utmost point is beneficial to operation.And this product purpose and building, there are much relations in departments such as power supply, are the test events that construction work is handed over and must be done.Simultaneously also be that power supply department is to a regular inspection item of existing supply line's (especially outmoded circuit).Therefore purposes is very wide.
Description of drawings is as follows:
Fig. 1 is a circuit diagram of the present utility model;
Fig. 2 is the structural drawing of magneto-electric gauge outfit (3) in the utility model.
Be described in further detail in conjunction with the accompanying drawings below by embodiment:
The utility model is made up of potentiometer (1), current-limiting resistance (2), magneto-electric gauge outfit (3), normally open push button switch (4), load electric furnace heating wire (5), plug (6) and fan (7); Connect between the two poles of the earth of plug (6) potentiometer (1), current-limiting resistance (2) and magneto-electric gauge outfit (3), and be connected in parallel between the two poles of the earth in fan (7), load electric furnace heating wire (5), between fan (7) and load electric furnace heating wire (5), be in series with normally open push button switch (4).The gauge outfit face of described magneto-electric gauge outfit (3) is provided with 0 to 240V voltage indicated number, is provided with the voltage drop indicated number simultaneously.
Electric furnace and multimeter 250V with 1,005 hectowatts exchange the measurement of carrying out the power source loads ability after shelves connect.Voltage is 240V before measuring, and electric furnace (load) connects back voltage and reduces to 215V, uses potentiometer that meter pointer is adjusted to 0 scale, presses normally open push button switch again, and pointer puts 6%, illustrates that this measuring method imitates very much.
The problem of doing load with electric furnace heating wire is can not very fast cooling after the heating, and is influential to still owing measuring accuracy.As wanting measuring instrument of the present utility model repeatedly to measure at short notice, should select for use the little load of temperature coefficient to do replacement.Or after switch, install a small fan blowing before the gauge outfit additional to accelerate the cooling of electric furnace heating wire.
" zero " starting point of special dial plate is corresponding with interchange 200V, the unnecessary at all measurement its " load capacity " if the supply socket open-circuit voltage is lower than 200V.Because this itself has just illustrated problem.
Claims (2)
1, a kind of power source loads ability measurement instrument, it is made up of potentiometer (1), current-limiting resistance (2), magneto-electric gauge outfit (3), normally open push button switch (4), load electric furnace heating wire (5), plug (6) and fan (7); It is characterized in that: the potentiometer (1) of connecting between the two poles of the earth of plug (6), current-limiting resistance (2) and magneto-electric gauge outfit (3), and be connected in parallel between the two poles of the earth in fan (7), load electric furnace heating wire (5), between fan (7) and load electric furnace heating wire (5), be in series with normally open push button switch (4).
2, power source loads ability measurement instrument according to claim 1 is characterized in that the gauge outfit face of described magneto-electric gauge outfit (3) is provided with 0 to 240V voltage indicated number, is provided with the voltage drop indicated number simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247597 CN2362137Y (en) | 1998-11-24 | 1998-11-24 | Power supply load ability tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98247597 CN2362137Y (en) | 1998-11-24 | 1998-11-24 | Power supply load ability tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2362137Y true CN2362137Y (en) | 2000-02-02 |
Family
ID=33992801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98247597 Expired - Fee Related CN2362137Y (en) | 1998-11-24 | 1998-11-24 | Power supply load ability tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2362137Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042412B (en) * | 2006-03-20 | 2010-05-26 | 佛山市顺德区顺达电脑厂有限公司 | Electric loading switching equipment |
| CN103017608A (en) * | 2012-12-20 | 2013-04-03 | 北京电子工程总体研究所 | Activation circuit tester |
-
1998
- 1998-11-24 CN CN 98247597 patent/CN2362137Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042412B (en) * | 2006-03-20 | 2010-05-26 | 佛山市顺德区顺达电脑厂有限公司 | Electric loading switching equipment |
| CN103017608A (en) * | 2012-12-20 | 2013-04-03 | 北京电子工程总体研究所 | Activation circuit tester |
| CN103017608B (en) * | 2012-12-20 | 2015-05-06 | 北京电子工程总体研究所 | Activation circuit tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |