CN203422467U - Single-phase electric energy meter verifying device phase shifting device - Google Patents
Single-phase electric energy meter verifying device phase shifting device Download PDFInfo
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- CN203422467U CN203422467U CN201320533836.9U CN201320533836U CN203422467U CN 203422467 U CN203422467 U CN 203422467U CN 201320533836 U CN201320533836 U CN 201320533836U CN 203422467 U CN203422467 U CN 203422467U
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Abstract
The utility model discloses a single-phase electric energy meter verifying device phase shifting device comprising a three-phase power supply connecting seat, a double-pole double-throw switching switch, a voltage regulator, a voltage meter, a power meter and a standard watt hour meter. The three-phase power supply connecting seat comprises an A-phase connecting terminal, a B-phase connecting terminal, a C-phase connecting terminal and a zero-wire connecting terminal. The three-phase power supply connecting seat is connected in series with the double-pole double-throw switching switch which is connected in parallel with the voltage regulator. The voltage meter, the power meter and the standard watt hour meter are all connected in parallel between two ends of a variable resistor. The single-phase electric energy meter verifying device phase shifting device has advantages of being more energy-saving and stable in voltage in verification of a single-phase electric energy meter so that cost and energy consumption of a calibrating device are reduced.
Description
Technical field
The utility model relates to a kind of single-phase electric energy meter calibration equipment phase shifting equipment.
Background technology
When electric energy meter calibration, usually need phase shifter to realize the variation of voltage-phase.As Fig. 3, in the electric energy meter calibrating apparatus of prior art, in electric energy meter calibrating apparatus, be all to reach phase shift object by phase shifter or phase-shifting transformer 7, its phase-shift theory is exactly the initial phase angle that changes voltage or electric current, meets the requirement that power factor (perception) is 0.5.Its working method is power supply, power switch, phase shifter or phase-shifting transformer, pressure regulator, load.In this method, owing to having used phase shifter or phase-shifting transformer 7, phase shifter or phase-shifting transformer 7 itself have at work certain power consumption, make in the verification process of electric energy meter energy consumption larger, and owing to will configuring phase shifter or phase-shifting transformer 7, make the whole manufacturing cost of electric energy meter calibrating apparatus high.
Utility model content
The utility model is the weak point existing in above-mentioned prior art for avoiding, and a kind of single-phase electric energy meter calibration equipment phase shifting equipment is provided, to reduce power consumption and the cost of electric energy meter calibrating apparatus.
The utility model be technical solution problem by the following technical solutions.
Single-phase electric energy meter calibration equipment phase shifting equipment, its design feature is to comprise three-phase supply Connection Block, double-pole double-throw change-over switch, pressure regulator, voltage table, power meter and reference kilowatthourmeter; Described three-phase supply Connection Block comprises A be connected terminal, B be connected terminal, C be connected terminal and zero line splicing ear; Described three-phase supply Connection Block is connected in series mutually with described double-pole double-throw change-over switch, and described double-pole double-throw change-over switch is in parallel and is connected with described pressure regulator, and described voltage table, power meter and reference kilowatthourmeter are all connected in the two ends of described pressure regulator in parallel.
The design feature of single-phase electric energy meter calibration equipment phase shifting equipment of the present utility model is also:
Described double-pole double-throw change-over switch is automatic transfer switch.
Compared with the prior art, the utility model beneficial effect is embodied in:
Single-phase electric energy meter calibration equipment phase shifting equipment of the present utility model, in laboratory for examining and determine unidirectional electric energy Watch Error, utilize the fundamental characteristics of three-phase alternating current, by switching the mode of connection, reach the object of phase shift 60 degree, cancelled phase-shifting transformer, the power factor that has guaranteed single-phase electric energy meter is the verification requirement of 0.5 o'clock.The method energy-conserving and environment-protective are stable, are a kind of methods of science, make more energy-conservation in electric energy meter calibration process, phase shift system is more stable.
1) the utility model makes the table verification of single-phase electric energy more energy-conservationly, reduces electromagnetic radiation, and environmental protection more, has improved the stable of voltage.
2) the utility model, owing to having cancelled phase shifter or phase-shifting transformer, can significantly reduce manufacturing cost, and can reduce electric energy loss in use.
Single-phase electric energy meter calibration equipment phase shifting equipment of the present utility model, has the more energy-conservation and advantage such as voltage stabilization, the cost that has reduced calibrating installation and energy consumption of the table verification of single-phase electric energy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of single-phase electric energy meter calibration equipment phase shifting equipment of the present utility model before phase shift.
Fig. 2 is the schematic diagram of single-phase electric energy meter calibration equipment phase shifting equipment of the present utility model after phase shift.
Fig. 3 is the schematic diagram of the single-phase electric energy meter calibration equipment phase shifting equipment of prior art.
Label in accompanying drawing 1～accompanying drawing 3: 1 three-phase supply Connection Block, the 11A terminal that is connected, the 12B terminal that is connected, the 13C terminal that is connected, 14 zero line splicing ears, 2 double-pole double-throw change-over switches, 3 pressure regulators, 4 voltage tables, 5 power meters, 6 reference kilowatthourmeters, 7 phase-shifting transformers.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1～accompanying drawing 2, single-phase electric energy meter calibration equipment phase shifting equipment, comprises three-phase supply Connection Block 1, double-pole double-throw change-over switch 2, pressure regulator 3, voltage table 4, power meter 5 and reference kilowatthourmeter 6; Described three-phase supply Connection Block 1 comprises A be connected terminal 11, B be connected terminal 12, C be connected terminal 13 and zero line splicing ear 14; Described three-phase supply Connection Block is connected in series mutually with described double-pole double-throw change-over switch 2, and described double-pole double-throw change-over switch 2 is in parallel and is connected with described pressure regulator 3, and described voltage table 4, power meter 5 and reference kilowatthourmeter 6 are all connected in the two ends of described pressure regulator 3 in parallel.
Described double-pole double-throw change-over switch 2 is automatic transfer switch.
Adopt automatic transfer switch, can during electrical energy meter calibration, phase shift action be realized automatically and being controlled, improve the automatization level of verification process.
During verification, the A of three-phase supply Connection Block terminal, B be connected terminal and the zero line splicing ear of terminal, C that be connected that be connected is connected respectively ABC three-phase and the zero line side of AC power.Power switch between three-phase supply Connection Block and pressure regulator adopts double-pole double-throw change-over switch.By being set, double-pole double-throw change-over switch switched voltage circuit connection mode reaches the object of leading 60 ° of voltage initial phase angle, change power switch into double-pole double-throw change-over switch, cancelled phase shifter or phase-shifting transformer, the power factor (PF) that has guaranteed single-phase electric energy meter is (perception) verification requirement of 0.5 o'clock.It is to utilize the characteristic of three-phase alternating current to reach phase shift object by Switching power wiring.
The utility model is in the voltage circuit of single-phase electric energy meter calibration equipment, by switching the mode of connection, reach the object of phase shift 60 degree, cancelled phase-shifting transformer, the power factor (PF) that has guaranteed single-phase electric energy meter is the verification requirement of 0.5 o'clock, can significantly reduce manufacturing cost, and can reduce electric energy loss in use, make the table verification of single-phase electric energy more energy-conservation, reduce electromagnetic radiation, environmental protection more, has improved the stable of voltage.
Claims (2)
1. single-phase electric energy meter calibration equipment phase shifting equipment, is characterized in that, comprises three-phase supply Connection Block (1), double-pole double-throw change-over switch (2), pressure regulator (3), voltage table (4), power meter (5) and reference kilowatthourmeter (6); Described three-phase supply Connection Block (1) comprises A be connected terminal (11), B be connected terminal (12), C be connected terminal (13) and zero line splicing ear (14); Described three-phase supply Connection Block is connected in series mutually with described double-pole double-throw change-over switch (2), described double-pole double-throw change-over switch (2) is in parallel and is connected with described pressure regulator (3), and described voltage table (4), power meter (5) and reference kilowatthourmeter (6) are all connected in the two ends of described pressure regulator (3) in parallel.
2. single-phase electric energy meter calibration equipment phase shifting equipment according to claim 1, is characterized in that, described double-pole double-throw change-over switch (2) is automatic transfer switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533836.9U CN203422467U (en) | 2013-08-29 | 2013-08-29 | Single-phase electric energy meter verifying device phase shifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533836.9U CN203422467U (en) | 2013-08-29 | 2013-08-29 | Single-phase electric energy meter verifying device phase shifting device |
Publications (1)
| Publication Number | Publication Date |
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| CN203422467U true CN203422467U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320533836.9U Expired - Fee Related CN203422467U (en) | 2013-08-29 | 2013-08-29 | Single-phase electric energy meter verifying device phase shifting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267370A (en) * | 2014-08-01 | 2015-01-07 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for achieving compatible meter hanging of meter hanging bases for single-phase electric energy meters and three-phase electric energy meters |
| CN104267369A (en) * | 2014-08-01 | 2015-01-07 | 云南电力试验研究院（集团）有限公司电力研究院 | Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system |
-
2013
- 2013-08-29 CN CN201320533836.9U patent/CN203422467U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267370A (en) * | 2014-08-01 | 2015-01-07 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for achieving compatible meter hanging of meter hanging bases for single-phase electric energy meters and three-phase electric energy meters |
| CN104267369A (en) * | 2014-08-01 | 2015-01-07 | 云南电力试验研究院（集团）有限公司电力研究院 | Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system |
| CN104267369B (en) * | 2014-08-01 | 2017-01-18 | 云南电力试验研究院（集团）有限公司电力研究院 | Separation achieving method for single-phase-three-phase electric energy meter compatible calibration voltage system |
| CN104267370B (en) * | 2014-08-01 | 2017-07-28 | 云南电力试验研究院（集团）有限公司电力研究院 | The compatible pocket watch solution of list/three-phase electric energy meter pocket watch seat |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20210829 |
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| CF01 | Termination of patent right due to non-payment of annual fee |