CN209250513U - A kind of Insulation monitoring high voltage direct current regulated power supply - Google Patents
A kind of Insulation monitoring high voltage direct current regulated power supply Download PDFInfo
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- CN209250513U CN209250513U CN201920069042.9U CN201920069042U CN209250513U CN 209250513 U CN209250513 U CN 209250513U CN 201920069042 U CN201920069042 U CN 201920069042U CN 209250513 U CN209250513 U CN 209250513U
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Abstract
The utility model relates to a kind of Insulation monitoring high voltage direct current regulated power supplies, are mainly used in test load equipment electrical insulation properties.Power supply obtains required voltage by pressure regulator, the rectification series connection of 12 pulsating wave step-up transformer, loads on load equipment, while power supply intermediate point is connect by resistance with load equipment casing, analogue ground point detects the insulation performance of load equipment electric loop and casing.When insulating normal, power positive cathode and load equipment are formed into a loop；When Abnormal Insulation, in addition to power positive cathode and load equipment forming circuit, there are also positive or negative poles to be formed into a loop over the ground, detects load equipment insulation performance by measurement loop current.The utility model structure is simple, easy to use, can be realized output DC voltage 0-DC4000V and is continuously adjusted, and industry is with strong points, can be exclusively used in the detection of load equipment electrical insulation properties.
Description
Technical field
The utility model relates to adjustable power of direct current, in particular to a kind of Insulation monitoring high voltage direct current regulated power supply.
Background technique
Direct current system is more complex relative to AC system, and passes through terminal box, the mechanism of cable run and power distribution equipment
Deng be connected, the probability being grounded is bigger.Direct current system is when occurring one point earth, due to there is no short circuit current to pass through,
Breaker, fuse etc. protect equipment will not protection act, system remains to continue to run.But this ground fault must be early
It was found that otherwise when another point is grounded, it is possible to cause the cisco unity malfunctions such as signal circuit, control loop, therefore direct current system
Insulation detection device of uniting is very necessary.With the continuous development of direct current power system, voltage, current class are constantly mentioned
Height, insulating detection equipment voltage class also need to be correspondingly improved, it is therefore desirable to which it is exhausted to design that a kind of structure is simple, voltage class is high
Edge detection high voltage direct current regulated power supply.
Summary of the invention
The purpose of this utility model is exactly continuously adjustable within the scope of 0-DC4000V in order to realize DC power supply, and is provided
A kind of Insulation monitoring high voltage direct current regulated power supply, structure is simple, easy to use.
The purpose of this utility model is achieved by the following technical measures: power supply passes through pressure regulator, 12 pulsating wave liter
Pressure transformer rectification series connection obtains required voltage, loads on load equipment, while power supply intermediate point is set by resistance and load
The connection of standby host shell, analogue ground point detect the insulation performance of load equipment electric loop and casing.When insulating normal, power supply is positive and negative
Pole and load equipment are formed into a loop；When Abnormal Insulation, in addition to power positive cathode and load equipment forming circuit, there are also positive or negative
Pole is formed into a loop over the ground, detects load equipment insulation performance by measurement loop current.
In above scheme, the pressure regulator is electric voltage regulator, can realize electronic pressure regulation by the button on device panel,
Internal high pressure circuit is isolated, it is easy to use, securely and reliably.
In above scheme, input voltage is rectified through electric voltage regulator pressure regulation, the boosting of 12 pulsating wave step-up transformer, rectifier bridge
And filtering obtains 0-DC1000V, four roads connect to obtain 0-DC4000V.
In above scheme, power supply intermediate point is by resistance and load casing, and electric current is excessive when can prevent load equipment short circuit
And damage power supply.
In above scheme, DC loop is set there are two voltage sensor and current sensor, passes through voltmeter and electricity respectively
Flow table real-time monitoring is to place voltage and current situation.
The utility model structure is simple, easy to use, has the advantage that
(1) using the above scheme, it is continuously adjustable to can be realized output DC voltage 0-DC4000V.
(2) industry is with strong points, can be exclusively used in the detection of load equipment electrical insulation properties.
Detailed description of the invention
Fig. 1 is the utility model embodiment appearance schematic diagram.In figure: TY is electric voltage regulator；T1, T2 are 12 pulsating wave change
Depressor；D1~D4 is rectifier bridge；TA1, TA2 are current sensor；TV1, TV2 are voltage sensor；PA1, PA2 are ammeter；
PV1, PV2 are voltmeter；C1, C2 are filter capacitor；R1 is current-limiting resistance；R2 is discharge resistance.
Specific embodiment
The utility model will be further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of Insulation monitoring high voltage direct current regulated power supply, mainly passes through pressure regulator TY, 12 pulsating wave liter
Pressure transformer (T1, T2) rectification series connection obtains required voltage, loads on load equipment, at the same power supply intermediate point by resistance with
The connection of load equipment casing, analogue ground point detect the insulation performance of load equipment electric loop and casing.When insulating normal, electricity
Source positive and negative anodes and load equipment are formed into a loop；When Abnormal Insulation, in addition to power positive cathode and load equipment forming circuit, there are also just
Pole or cathode are formed into a loop over the ground, detect load equipment insulation performance by measurement loop current.
As shown in Figure 1, the input voltage that is changed through electric voltage regulator TY of input three-phase AC380V, specifically by setting
Button on standby panel is operated, and operating position is isolated with internal circuit, securely and reliably.
As shown in Figure 1, the voltage of pressure regulator TY variation is by step-up transformer (T1, T2), rectifier bridge (D1~D4) and filter
Wave capacitor (C1, C2), single channel export 0-DC1000V, and four roads connect to obtain 0-DC4000V.
As shown in Figure 1, power supply intermediate point is by resistance R1 and load casing, electric current is excessive when can prevent load equipment short circuit
And damage power supply.
As shown in Figure 1, in above scheme, DC loop sets that there are two voltage sensor (TV1, TV2) and current sensors
(TA1, TA2), respectively by voltmeter (PV1, PV2) and ammeter (PA1, PA2) real-time monitoring both ends of power to place voltage
And current conditions.
As shown in Figure 1, one resistance R2 of power supply output-parallel, can quickly discharge to power supply after closing power supply output.
In conclusion the utility model performance indicator is as follows:
Input voltage: three-phase 380VAC ± 10%, 50Hz ± 0.5Hz；
Output voltage: direct current 0-4kV is continuously adjustable, error+100V, ripple content≤3%；
Regime mode: under normal circumstances, power positive cathode and load are formed into a loop for insulation, in the case of mains isolation is destroyed,
In addition to power positive cathode and load are formed into a loop, there are also positive or negative poles to be formed into a loop over the ground, 400 Ω of loop resistance, maximum electricity
Press 2000V, maximum power 10kW, general power 13kW；
Dielectric properties: input terminal and the control being directly connected to therewith and subsidiary loop, insulation should be able to bear 2500V's
Industrial frequency experiment voltage lasts 1min without breakdown or flashover；Output end and the control being directly connected to therewith and subsidiary loop,
It, which insulate, should be able to bear the industrial frequency experiment voltage of 10kV, last 1min without breakdown or flashover；Input terminal and output end, absolutely
Edge should be able to bear the industrial frequency experiment voltage of 10kV, last 1min without breakdown or flashover.
Claims (2)
1. a kind of Insulation monitoring high voltage direct current regulated power supply, it is characterised in that: be mainly used for test load equipment electric insulation
Performance, power supply obtain required voltage by pressure regulator, the rectification series connection of 12 pulsating wave step-up transformer, load on load equipment,
Power supply intermediate point is connect by resistance with load equipment casing simultaneously, and analogue ground point detects load equipment electric loop and casing
Insulation performance.
2. a kind of Insulation monitoring high voltage direct current regulated power supply according to claim 1, it is characterised in that: the pressure regulator
For electric voltage regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069042.9U CN209250513U (en) | 2019-01-16 | 2019-01-16 | A kind of Insulation monitoring high voltage direct current regulated power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920069042.9U CN209250513U (en) | 2019-01-16 | 2019-01-16 | A kind of Insulation monitoring high voltage direct current regulated power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209250513U true CN209250513U (en) | 2019-08-13 |
Family
ID=67536332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920069042.9U Active CN209250513U (en) | 2019-01-16 | 2019-01-16 | A kind of Insulation monitoring high voltage direct current regulated power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209250513U (en) |
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2019
- 2019-01-16 CN CN201920069042.9U patent/CN209250513U/en active Active
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