CN201096859Y - Additional current leakage testing device for electric heater - Google Patents
Additional current leakage testing device for electric heater Download PDFInfo
- Publication number
- CN201096859Y CN201096859Y CNU2007201205589U CN200720120558U CN201096859Y CN 201096859 Y CN201096859 Y CN 201096859Y CN U2007201205589 U CNU2007201205589 U CN U2007201205589U CN 200720120558 U CN200720120558 U CN 200720120558U CN 201096859 Y CN201096859 Y CN 201096859Y
- Authority
- CN
- China
- Prior art keywords
- water
- phase
- leakage current
- isolating transformer
- electric heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to an additional leakage current testing device. The utility model comprises a water collecting unit, a waterproof type insulating transformer, a testing unit and an output socket, wherein, the water collecting unit comprises a box body, a water inlet pipe, a shower head and a metal gauze, the shower head is fixed at the upper end of the box body and connected with the water inlet pipe, the metal gauze is arranged in the box body, the waterproof type insulating transformer comprises an insulating transformer, a waterproof outer casing and a waterproof protection wire holder, the primary coil of the insulating transformer is directly connected into a three-phase four-wire electric network power supply, a secondary output is connected into the three-phase four-wire input terminal of the testing unit, the single phase input terminal of a one-phase and middle wire assess testing unit is arbitrarily chosen from the output of the insulating transformer, and the output socket is connected with the three-phase output of the insulating transformer through the three-phase four-wire input terminal. The additional leakage current testing device has the advantages that the security is high, the space is saved, the operation of the whole device is simple, and the operation is reliable, which is convenient for the testing, thus the additional leakage current testing device has large practicability.
Description
Technical field
The utility model relates to the household electrical appliance technical field of measurement and test, and particularly a kind of electric heater adds the leakage current test device.
Background technology
In recent years, user's electric shock casualty accident in the process of using electric heater happens occasionally, and the number of casualties is growing on and on.Traditional test to the additional leakage current of electric heater mainly is that the various contingent failure situations of simulating is in use carried out dependence test, has some problems:
1, test circuit may influence electric power system;
2, need disassemble electric heater, the heat-generating pipe process and remould is come simulated failure;
3, in the test process inner bag with electricity may be passed to water system, have bigger danger;
4, charged water outlet is trickled everywhere, may cause Danger Electric shock risk to the tester.
The utility model content
It is a kind of safely and effectively to the proving installation of the additional leakage current test of electric heater that the purpose of this utility model is to provide, and it not only can accurately finish the test of the additional leakage current of stipulating in the standard, and installs safe, reliable and easy.
The purpose of this utility model realizes by following technical scheme:
A kind of electric heater adds the leakage current test device, comprises water collector unit, water-proof type isolating transformer, test cell and accessory power outlet, wherein,
The water collector unit comprises casing, water inlet pipe, gondola water faucet, wire netting, and gondola water faucet is fixed on the upper end of casing, joins with water inlet pipe, and wire netting is arranged in the casing;
The water-proof type isolating transformer comprises isolating transformer, waterproof case and waterproofing protection junction block, the elementary electric network source of directly linking three-phase and four-line of isolating transformer, secondary output inserts the three-phase and four-line input terminal of test cell, is inserted the single-phase input terminal of test cell again by an optional phase and center line in the isolating transformer output;
Accessory power outlet joins by the three-phase output of described three-phase and four-line input terminal and isolating transformer;
Test cell comprises two groups of human body simulation resistance, the common port of one termination test unit of first group of human body simulation resistance, the other end links to each other with the ground wire jack of accessory power outlet by first single pole multiple throw, the common port of one termination test unit of second group of human body simulation resistance, the other end is connected on the wire netting by second single pole multiple throw, and is all in parallel respectively and be in series with voltage table and reometer on the circuit of two groups of human body simulation resistance.
The water collector unit of technique scheme preferably also comprises reserve tank, water pump, return pipe, drainpipe, and drainpipe links to each other with reserve tank by water pump, and reserve tank is provided with return pipe.
Test cell preferably also comprises leakage current tester, the one termination is gone into the common port of test cell, the moving contact of the other end and second single pole multiple throw is connected on respectively on two stationary contacts of a hilted broadsword two-throw switch, and the moving contact of this hilted broadsword two-throw switch is received on the wire netting.
The two ends of the secondary output of isolating transformer preferably connect a polarity interswitch, preferably also connect a fault simulation switch between one and accessory power outlet earth jack of secondary output.
Substantive features of the present utility model are as follows: one, the water-proof type isolating transformer is set, isolates power supply unit and test cell, prevent both interacting.Two, adopt dedicated test circuit to realize heat-generating pipe explosion or ground wire electrification situation, avoid directly disassembling water heater.Three, the water inlet spacer assembly is set, prevents the charged water system that is passed to of inner bag.Four, the water collector unit is set, both convenient test prevents that again charged water outlet from trickling everywhere, guarantees test safety.
Compared with prior art, the technique effect that the utility model produced is:
1, safety: realize cutting off with electrical network by the water-proof type isolating transformer; Utilize water body resistive isolation water inlet; Utilize the safety of test of water collector unit and realization water delivering orifice.
2, simulation realizes the failure condition of heat-generating pipe explosion and ground wire electrification: realize heat-generating pipe explosion effect and ground wire electrification situation by the direct short circuit of the earth jack in the L utmost point and the socket, avoid disassembling water heater.
3, be convenient to existing instrument test: designs such as test splice are set, are convenient to the use of existing instruments such as leakage current tester.
4, conserve space: make the water collector unit, fixing water spray is first-class, dwindles usable range, saves the test space.
5, whole device is simple to operate, and is reliable, made things convenient for test, has very big practicality.
Description of drawings
Fig. 1 water collector unit of the present utility model structural representation;
The structural representation of the casing in Fig. 2 water collector unit;
Fig. 3 circuit theory diagrams of the present utility model.
Identify among the figure: casing 1; Gondola water faucet 2; Gondola water faucet support 3; Water inlet pipe 4; Rising pipe 5; Return pipe 6; Water pump 7; Reserve tank 8; Draining valve 9; Wire netting 10; Net bracing frame 11; Electric heater 12; Isolating transformer 13; Accessory power outlet 14; Leakage current tester 15.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Of the present utility modelly form by water-proof type isolating transformer, water collector unit, accessory power outlet and test cell four parts.
The water collector unit comprises casing 1, gondola water faucet 2, gondola water faucet support 3, water inlet pipe 4, drainpipe 5, return pipe 6, water pump 7, reserve tank 8, draining valve 9 as shown in Figure 1.Casing 1 usefulness organic glass is made, and its upper end is provided with gondola water faucet support 3, and gondola water faucet 2 is installed, and gondola water faucet 2 is connected to the water delivering orifice of tested electric heater 12 by water inlet pipe 4.The lower end of water collector unit is provided with the draining valve made from non-conductive material 9 simultaneously; drainpipe is transported to reserve tank 8 by water pump 7 with the test water in the casing 1; pass through return pipe 6 again to electric heater 12; so recycle; can recycle test water; spattering of water dropped down in can preventing from again to test, and protected tester and testing apparatus ground safety effectively.Return pipe 6 connects reserve tank and electric heater 12, and the water body resistance that water inlet pipe 4, drainpipe 5, return pipe 6 all utilize thin and long plastic tube to form is realized isolating.
Box inner structure is equipped with wire netting 10 by net bracing frame 11 in the casing as shown in Figure 2.
The water-proof type isolating transformer comprises isolating transformer 13, the waterproof case and the waterproofing protection junction block of universal caster wheel base is housed, the elementary electric network source of directly linking three-phase and four-line of isolating transformer 13, secondary output inserts the three-phase and four-line input terminal of accessory power outlet 14, electric heater 12 power supplies of accessory power outlet 14 for testing; Again by in isolating transformer 13 output optional one mutually and center line insert the single-phase input terminal of test cell, be whole test cell power supply, thereby isolation power supply unit and test cell are avoided influencing each other between the two.
The circuit theory of test cell as shown in Figure 3.3 resistance that single pole multiple throw K2 and K3 are corresponding respectively are the resistance of simulation adult male, women and children's human body resistance statistical value.Voltage and current table on the K2 is used to show the voltage that bears and flows through the electric current of human body on human body when human body directly touches live part.The electric current that voltage and current table on the K3 is used to show the voltage that bears when human body dashes the water that drenches water delivering orifice on human body and flows through human body.When K switch 4 is upwards closed, voltage and current table on the K3 is used to show voltage that bears and the electric current that flows through human body on human body when human body dashes the water that drenches water delivering orifice, then can measure the leakage current of the water at the mouth of a river downwards when closed by leakage current tester 15 according to the standard code method.Leakage current tester 15 is instruments of measuring leakage current, it is the surveying instrument of selling on a kind of market, its termination is gone into the instrument splicing ear that links to each other with common port in the test cell, and the other end can be connected on the wire netting or the metal parts of water heater entery and delivery port according to the difference at test position.1C and 2C are used to realize the exchange of the L utmost point and N interpolar.K switch 1 is used to simulate the water heater fault.When K1 disconnects, the water heater operate as normal; When K1 is closed, simulate the situation of water heater heater element failure of insulation and ground wire electrification.Test cell can be realized the circuit of the measurement leakage current stipulated in the national standard, can simulate simultaneously the situation of water heater heater element failure of insulation and ground wire electrification, so just exempted disassembling tested water heater, the insulation that the taking-up heater element destroys on it is provided with fault.
Claims (4)
1. the additional leakage current test device of electric heater comprises water collector unit, water-proof type isolating transformer, test cell and accessory power outlet, wherein,
The water collector unit comprises casing, water inlet pipe, gondola water faucet, wire netting, and gondola water faucet is fixed on the upper end of casing, joins with water inlet pipe, and wire netting is arranged in the casing;
It is characterized in that,
The water-proof type isolating transformer comprises isolating transformer, waterproof case and waterproofing protection junction block, the elementary electric network source of directly linking three-phase and four-line of isolating transformer, secondary output inserts the three-phase and four-line input terminal of test cell, is inserted the single-phase input terminal of test cell again by an optional phase and center line in the isolating transformer output;
Accessory power outlet joins by the three-phase output of described three-phase and four-line input terminal and isolating transformer;
Test cell comprises two groups of human body simulation resistance, the common port of one termination test unit of first group of human body simulation resistance, the other end links to each other with the ground wire jack of accessory power outlet by first single pole multiple throw, the common port of one termination test unit of second group of human body simulation resistance, the other end is connected on the wire netting by second single pole multiple throw, and is all in parallel respectively and be in series with voltage table and reometer on the circuit of two groups of human body simulation resistance.
2. electric heater according to claim 1 adds the leakage current test device, it is characterized in that, described water collector unit also comprises reserve tank, water pump, return pipe, drainpipe, and drainpipe links to each other with reserve tank by water pump, and reserve tank is provided with return pipe.
3. electric heater according to claim 1 adds the leakage current test device, it is characterized in that, described test cell also comprises leakage current tester, the one termination is gone into the common port of test cell, the moving contact of the other end and second single pole multiple throw is connected on respectively on two stationary contacts of a hilted broadsword two-throw switch, and the moving contact of this hilted broadsword two-throw switch is received on the wire netting.
4. according to the additional leakage current test device of any described electric heater of claim 1 to 3, it is characterized in that the two ends of the secondary output of described isolating transformer are connected to a polarity interswitch and are connected to a fault simulation switch between one and accessory power outlet earth jack of secondary output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201205589U CN201096859Y (en) | 2007-06-05 | 2007-06-05 | Additional current leakage testing device for electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201205589U CN201096859Y (en) | 2007-06-05 | 2007-06-05 | Additional current leakage testing device for electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096859Y true CN201096859Y (en) | 2008-08-06 |
Family
ID=39923912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201205589U Expired - Fee Related CN201096859Y (en) | 2007-06-05 | 2007-06-05 | Additional current leakage testing device for electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096859Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188141A (en) * | 2018-09-14 | 2019-01-11 | 安徽苏立科技股份有限公司 | A kind of heating tube Multi-function experimental test equipment |
| CN109188139A (en) * | 2018-09-14 | 2019-01-11 | 安徽苏立科技股份有限公司 | A kind of heating tube dry combustion method Quench experiment test equipment |
| CN112834836A (en) * | 2020-04-03 | 2021-05-25 | 青岛经济技术开发区海尔热水器有限公司 | Water heater detection device and detection method |
-
2007
- 2007-06-05 CN CNU2007201205589U patent/CN201096859Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188141A (en) * | 2018-09-14 | 2019-01-11 | 安徽苏立科技股份有限公司 | A kind of heating tube Multi-function experimental test equipment |
| CN109188139A (en) * | 2018-09-14 | 2019-01-11 | 安徽苏立科技股份有限公司 | A kind of heating tube dry combustion method Quench experiment test equipment |
| CN112834836A (en) * | 2020-04-03 | 2021-05-25 | 青岛经济技术开发区海尔热水器有限公司 | Water heater detection device and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105548780A (en) | Electric automobile DC charging pile interface circuit simulator | |
| CN201096859Y (en) | Additional current leakage testing device for electric heater | |
| CN101404404B (en) | Demarcation breaker for vector-synthesis zero sequence current | |
| CN202940463U (en) | Power-supply switching box | |
| CN205159808U (en) | High tension switchgear system | |
| CN106501674A (en) | Medium voltage distribution network single-phase earth fault positioning device and its Fault Locating Method | |
| CN205507056U (en) | Insulating detector and collection module's off -line tester | |
| CN104734128A (en) | Low-voltage distribution network null wire break protector | |
| CN205679686U (en) | The external chopper of electric energy meter | |
| CN112309793B (en) | Novel external device of intelligent molded case circuit breaker | |
| CN204992580U (en) | Expanded not repeated fixed measuring equipment of dual power supply | |
| CN203773023U (en) | Intelligent power meter breaker testing device | |
| CN207780125U (en) | A kind of test device for relay protection | |
| CN105896536A (en) | Main wiring system of medium-voltage power distribution cabinet | |
| CN2457729Y (en) | Single phase leakage braker | |
| CN204809857U (en) | Low voltage network zero line broken string protection device | |
| CN201294368Y (en) | Demarcation breaker for vector-synthesis zero sequence current | |
| CN216014514U (en) | Operation and distribution integrated practical training system | |
| CN104362519A (en) | Medium-voltage power distribution system | |
| CN205280868U (en) | Portable short circuit electric leakage online test appearance | |
| CN204992274U (en) | Dual supply massive quantity power supply and high expanded not repeated fixed measuring equipment of low meter that supplies | |
| CN204992273U (en) | Expanded pull -out type measuring equipment that does not repeat of dual power supply | |
| CN110349484A (en) | Anti- person electric shock pilot system | |
| CN207866882U (en) | A kind of list instrument secondary pressurized device | |
| CN208489688U (en) | A kind of PT cabinet of internal battery charge-discharge system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 |