CN206339637U - A kind of power detecting system - Google Patents
A kind of power detecting system Download PDFInfo
- Publication number
- CN206339637U CN206339637U CN201621440085.6U CN201621440085U CN206339637U CN 206339637 U CN206339637 U CN 206339637U CN 201621440085 U CN201621440085 U CN 201621440085U CN 206339637 U CN206339637 U CN 206339637U
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- CN
- China
- Prior art keywords
- test load
- phase
- phase electricity
- resistive
- zero sequence
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- 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
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Abstract
The utility model discloses a kind of power detecting system, including A.C. contactor, breaker, zero sequence current mutual inductor and three-phase electricity is resistive, capacitive character, inductive test load, resistive single-phase electricity, capacitive character, inductive test load；A.C. contactor, breaker and zero sequence current mutual inductor are connected in turn in three-phase line；Three-phase electricity is resistive, capacitive character, inductive test load are connected in parallel in three-phase line；Single-phase electricity is resistive, capacitive character, inductive test load are connected in parallel between uniline and zero line, zero sequence current mutual inductor CT output end and the control end of A.C. contactor are connected, it is capable of the electrical equipment change at analog subscriber end, the electric energy of input quality of power supply measuring instrument more presses close to real production environment, makes the result of measurement more accurate.
Description
Technical field
The utility model is related to a kind of power detecting instrument, particularly a kind of three-phase alternating-current supply detection means.
Background technology
Current user terminal（It is equipped with factory of separated transformer etc.）Three phase mains quality testing mode includes unloaded detect
And load detecting, the importance of load detecting is more than unloaded detection, due to the load characteristic of each user terminal（It is broadly divided into resistive
Load, capacity load, inductive load）It is different, moreover, influenceed by factors such as seasonal variations, electrical equipment conversion,
The load characteristic of user terminal is also changing, current power detecting system do not consider user load change of properties this
Factor, the load power source qualitative data of measurement is not accurate enough.
The content of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of with safety protection function, and measurement result is more
Plus accurate power detecting system.
The utility model solves the technical scheme that its technical problem used：
A kind of power detecting system, including A.C. contactor KT, circuit breaker Q F, zero sequence current mutual inductor CT and three-phase resistance
Property test load L1, three-phase electricity capacitive test load L2, the perceptual test load L3 of three-phase electricity, the resistive test load L4 of single-phase electricity,
Single-phase electricity capacitive test load L5 and single-phase inductive test load L6；The A.C. contactor KT, circuit breaker Q F and zero sequence electricity
Current transformer CT is connected in turn in U, V, W three-phase line；The resistive test load L1 of three-phase electricity, the test of three-phase electricity capacitive are negative
Carry L2 and the perceptual test load L3 of three-phase electricity and be connected in parallel on the zero sequence current mutual inductance by switching K1, switch K2, switch K3 respectively
In U, V, W three-phase line after device CT；The resistive test load L4 of single-phase electricity, single-phase electricity capacitive test load L5 and single-phase
Inductive test load L6 is connected in parallel on after the zero sequence current mutual inductor CT by switching K4, switch K5, switch K6 respectively
Between U, V, W uniline and zero line N；The output end of the zero sequence current mutual inductor CT and the control of the A.C. contactor KT
End connection.
Light emitting diode D1, hair are connected between U, V, W uniline and zero line N of the circuit breaker Q F output ends
Optical diode D2 and light emitting diode D3.
The light emitting diode D1, light emitting diode D2 and light emitting diode D3 are in series with resistance respectively in the loop
R1, resistance R2 and resistance R3.
The beneficial effects of the utility model are：Input termination power of the present utility model, output termination quality of power supply measurement
Instrument, A.C. contactor KT, circuit breaker Q F and zero sequence current mutual inductor CT are capable of the safety of protection system, and three-phase electricity is resistive, electricity
Capacitive and inductive test load and the electricity consumption that single-phase electricity is resistive, capacitive and inductive test load is capable of analog subscriber end are set
Standby change, the electric energy of input quality of power supply measuring instrument more presses close to real production environment, makes the result of measurement more accurate.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is circuit principle structure figure of the present utility model.
Embodiment
A kind of reference picture 1, power detecting system inputs termination power U1, V1, W1, N1, output end U2, V2, W2, N2 connect
Existing quality of power supply measuring instrument, including A.C. contactor KT, circuit breaker Q F, zero sequence current mutual inductor CT and three-phase electricity are resistive
The perceptual test load L3 of test load L1, three-phase electricity capacitive test load L2, three-phase electricity, the resistive test load L4 of single-phase electricity, list
Phase capacitive character test load L5 and single-phase inductive test load L6；The A.C. contactor KT, circuit breaker Q F and zero-sequence current
Transformer CT is connected in turn in U, V, W three-phase line；The resistive test load L1 of three-phase electricity, three-phase electricity capacitive test load
L2 and the perceptual test load L3 of three-phase electricity are connected in parallel on the zero sequence current mutual inductor by switching K1, switch K2, switch K3 respectively
U, V, W three-phase after CT（380V）In circuit；The resistive test load L4 of single-phase electricity, single-phase electricity capacitive test load L5 and
Single-phase inductive test load L6 respectively by switch K4, switch K5, switch K6 be connected in parallel on the zero sequence current mutual inductor CT it
U, V, W uniline and zero line N afterwards（220V）Between；The output end of the zero sequence current mutual inductor CT and the ac contactor
Device KT control end connection.
Light emitting diode D1, hair are connected between U, V, W uniline and zero line N of the circuit breaker Q F output ends
Optical diode D2 and light emitting diode D3.The light emitting diode D1, light emitting diode D2 and light emitting diode D3 places loop
It is middle to be in series with resistance R1, resistance R2 and resistance R3 respectively, after energization, light emitting diode D1, light emitting diode D2 and light-emitting diodes
Pipe D3, represents that U, V, W three-phase alternating-current powered are normal, resistance R1, resistance R2 and resistance R3 play metering function, protects light-emitting diodes
Pipe D1, light emitting diode D2 and light emitting diode D3.
Current circuit breaker Q F（Air switch）Have been provided with the defencive function such as short-circuit, over-pressed, under-voltage, overcurrent tripping, energy
Circuit and load occur overload, it is short-circuit, under-voltage in the case of system is protected, in the event of leak electricity or personnel's electric shock thing
Therefore, zero-sequence current is produced in system, zero sequence current mutual inductor CT output end output voltage signal, triggering A.C. contactor KT is cut
Power-off source plays a protective role.
Switch K1, switch K2, switch K3, switch K4, switch K5, switch K6 can also be controlled manually with Electronic control,
The perceptual test load L3 of the resistive test load L1 of three-phase electricity, three-phase electricity capacitive test load L2, three-phase electricity, the resistive test of single-phase electricity
Load L4, single-phase electricity capacitive test load L5 and single-phase inductive test load L6 open or closed, be capable of analog subscriber end
Electrical equipment changes, and the electric energy of input quality of power supply measuring instrument more presses close to real production environment, makes the result of measurement more
Plus it is accurate.
Claims (3)
1. a kind of power detecting system, it is characterised in that it includes A.C. contactor KT, circuit breaker Q F, zero sequence current mutual inductor CT
With the resistive test load L1 of three-phase electricity, three-phase electricity capacitive test load L2, the perceptual test load L3 of three-phase electricity, the resistive survey of single-phase electricity
Examination load L4, single-phase electricity capacitive test load L5 and single-phase inductive test load L6；The A.C. contactor KT, circuit breaker Q F
It is connected in turn with zero sequence current mutual inductor CT in U, V, W three-phase line；The resistive test load L1 of three-phase electricity, three phase capacitance
Property the test load L2 and perceptual test load L3 of three-phase electricity be connected in parallel on the zero sequence by switching K1, switch K2, switch K3 respectively
In U, V, W three-phase line after Current Transmit；The resistive test load L4 of single-phase electricity, single-phase electricity capacitive test load
L5 and single-phase inductive test load L6 are connected in parallel on the zero sequence current mutual inductor by switching K4, switch K5, switch K6 respectively
Between U, V, W uniline and zero line N after CT；The output end of the zero sequence current mutual inductor CT and the A.C. contactor
KT control end connection.
2. power detecting system according to claim 1, it is characterised in that U, V, W of the circuit breaker Q F output ends are single-phase
Light emitting diode D1, light emitting diode D2 and light emitting diode D3 are connected between circuit and zero line N.
3. power detecting system according to claim 2, it is characterised in that the light emitting diode D1, light emitting diode D2
Resistance R1, resistance R2 and resistance R3 are in series with respectively in the loop with light emitting diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621440085.6U CN206339637U (en) | 2016-12-27 | 2016-12-27 | A kind of power detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621440085.6U CN206339637U (en) | 2016-12-27 | 2016-12-27 | A kind of power detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206339637U true CN206339637U (en) | 2017-07-18 |
Family
ID=59302602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621440085.6U Expired - Fee Related CN206339637U (en) | 2016-12-27 | 2016-12-27 | A kind of power detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206339637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780221A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
| EP3940400A1 (en) * | 2020-07-13 | 2022-01-19 | Koninklijke Fabriek Inventum B.V. | Detection circuit and method with single pole dual throw switches |
-
2016
- 2016-12-27 CN CN201621440085.6U patent/CN206339637U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780221A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | Electrical measurement system for source end of circuit breaker on primary and secondary fusion complete set of column |
| EP3940400A1 (en) * | 2020-07-13 | 2022-01-19 | Koninklijke Fabriek Inventum B.V. | Detection circuit and method with single pole dual throw switches |
| US11492133B2 (en) | 2020-07-13 | 2022-11-08 | Koninklijke Fabriek Inventum B.V. | Dual pole switch detection circuit |
| US11834193B2 (en) | 2020-07-13 | 2023-12-05 | B/E Aerospace, Inc. | Dual pole switch detection circuit |
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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: 20170718 Termination date: 20211227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |