CN2038657U - Load device with adjustable power factor - Google Patents
Load device with adjustable power factor Download PDFInfo
- Publication number
- CN2038657U CN2038657U CN 88200702 CN88200702U CN2038657U CN 2038657 U CN2038657 U CN 2038657U CN 88200702 CN88200702 CN 88200702 CN 88200702 U CN88200702 U CN 88200702U CN 2038657 U CN2038657 U CN 2038657U
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- load box
- load
- ohm
- impedance
- power factor
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Abstract
The utility model relates to a multifunctional load box which is used in experiments for testing current mutual inductor errors. At present, the load devices which are produced at home are all provided with fixed power factors and are inefficient in overload capability, and impedance and inductive reactance can not be independently used. The utility model is provided with a maximum current universal load box with an adjustable power factor (con phi =0-1), and the impedance and the inductive reactance can be independently used (Disclosed in the diagram 1 the specification). The load device comprises an impedance load box and an inductive reactance load box. The load box has the advantages of large capacity, strong capability of overloading electric current, simple structure and convenient operation. The load box is a necessary device for carrying out new standards in domestic transformer factories and in the current mutual inductor industry.
Description
The utility model is the general load box of big electric current, and power factor is adjustable, and current transformer is carried out exfactory inspection, a kind of equipment that impedance and induction reactance also can be used separately.
The load box of domestic production at present, it is fixing to be power factor, COS φ=0.8, the overload current ability is low, and impedance induction reactance can not be used separately.The purpose of this utility model, needs according to summation current transformer factory of domestic maximum transformer factory, design has also been made power factor tunable load case, and the most outstanding technical characterstic: power factor is adjustable, i.e. COS φ=0～1, the current overload ability is strong, rated current 5A, overload current 150A, impedance and induction reactance can be used separately, this load box can be done the fictitious load of measuring current transformer error test usefulness, also can be used for electric instrument, metering, R﹠D institution and does fictitious load and use.A load box can replace many load boxs, the structure of this load box is partly combined by impedance load case and induction reactance load box two, the most outstanding technical characterictic is: the head end with 0.01 ohm of two casees stepping resistance value couples together with lead respectively, as shown in Figure 1: R
0With X
10Couple together with lead, use laminated brush switch K
1-K
7Just can select needed impedance and induction reactance value, also can select corresponding power factor, reach the adjustable purpose of power factor, also COn φ=0～1.Independent if desired impedance or induction reactance value also can be with R
0And X
10Lead disconnects and getting final product.The present invention overcomes the nonadjustable shortcoming of power factor, can satisfy the needs that current transformer is done overload current test, be domestic transformer producer, current transformer industry carry out new standard must indispensable equipment.
The utility model is component invention, and its structure is impedance load case and the manufacturing of induction reactance load box sectional, and the impedance load case is by binding post (1), knob (2), wire resistor (3), cabinet (4), support (5), four fixed heads (6), lead (7), laminated brush switch (8) (comprises K
1, K
2, K
3, K
4, constitute.) wire resistor (8) is with the noninductive coiling way of pure resistance, by insulated conductor ring (21), is wound on the insulation board (22), insulated conductor ring (21) is fixing by screw (20).The resistance of four fixed heads (6) is respectively: 0.01 * 10 ohm, 0.1 * 9 ohm, 1 * 9 ohm, 10 * 1 ohm by laminated brush switch K
1-K
4Connect with each resistance value respectively, form a series connection adjustable resistance value arbitrarily, the induction reactance load box is by binding post (9), knob (10), 0.01 * 10 ohm of induction reactance coil loop epoxy resins casting combinations (11), 0.1 * 9 ohm of induction reactance coil loop epoxy resins casting combinations (12), 1 * 9 ohm of induction reactance coil loop epoxy resins casting combination (13), its winding method is a coil (26) by backbone winding on the CD sections core (24) fixing with fastening copper sheet (23), whenever in the middle of one deck, put one deck air-gap insulation spacer (27), different resistances is divided on three fixed heads as required, draw by lead-out wire (25), the resistance of every block of plate is respectively 0.01 * 10 ohm, 0.1 * 9 ohm, 1 * 9 ohm, by the laminated brush switch K of shell
5, K
6, K
7Connect with the induction reactance value respectively, form any adjustable induction reactance value of a series connection.
Embodiment is described in detail in detail in conjunction with the accompanying drawings:
Fig. 1: power factor tunable load case wiring schematic diagram.
Fig. 2: impedance load box structure schematic diagram.
Fig. 3: induction reactance load box organigram.
Fig. 4: impedance R
XNoninductive coiling schematic diagram.
Fig. 5: the coiled wire-wound coil schematic diagram of inductive reactance xl.
Fig. 6: power factor tunable load case electrical schematic diagram.
The drawing explanation:
(1), (10) binding post, (2), (10) knob, (3) wire resistor, (4), (14) cabinet, (5), (15) support, (6) fixed head, (7), (16), lead, (8), (17), laminated brush switch (K
1, K
2, K
3, K
4, K
5, K
6, K
7), (11), (12), (13) are respectively 0.01 * 10 ohm, and 0.1 * 9 ohm, 1 * 9 ohm of induction reactance coil loop epoxy resins casting combination, (18) wire resistor.
Below in conjunction with accompanying drawing in detail its operational detail is described in detail:
Embodiment 1:
As shown in Figure 1, the central point of laminated brush switch is received the R at zero point of next stage
0Change each resistance value with moving point.Such as: laminated brush switch K
1, K
2, K
3Central point receive the head end that the ohmic load case respectively coils resistance respectively; K
4Central point as the lead-out terminal of impedance load case; Laminated brush switch K
5, K
6Central point receive the head end that the induction reactance load box respectively coils resistance respectively; K
7Central point as the lead-out terminal of induction reactance load box.As impedance load case R
X0.01 ohm of head end and 0.01 ohm of head end of induction reactance load box couple together with lead, power factor (COn φ=0～1) is adjustable load box.
Embodiment 2:
Impedance load case laminated brush switch K receives 0.01 * 10 ohm the 4th retaining, K as required
2Receive 0.1 * 9 ohm the 6th retaining, K
3Receive 1 * 10 ohm head end, K
4Receive 10 ohm of head ends, by K
4Central point output, R at this moment
XThe resistance of load box is 0.64 ohm.
Induction reactance load box laminated brush switch K
5Receive 0.01 * 10 ohm of the 8th retaining, K
6Receive 0.1 * 9 ohm the 4th retaining, K
7Receive 1 * 9 ohm O end, by K
7Central point output, this moment, the induction reactance value of XL load box was 0.48 ohm, this moment, power factor was 0.8.
Embodiment 3
Can use the impedance load case separately as required, as shown in Figure 2, K switch
1Receive 0.01 * 10 ohm the 8th retaining K
2Receive 0.1 * 9 ohm the 9th retaining, K
3Receive 1 * 9 ohm the 9th retaining, K
4Receive 10 ohm not end, this moment, resistance value was 19.98 ohm.
Embodiment 4:
Can use the induction reactance load box separately as required, as shown in Figure 3: K switch
5Receive 0.01 * 10 ohm the 8th retaining, K
6Receive 0.1 * 9 ohm the 3rd retaining, K
7Receive 1 * 9 ohm the 9th retaining, this moment, the induction reactance value was 9.38 ohm.
Power factor tunable load case can use flexibly, and it is big to have a capacity, and the overload current ability is strong, simple structure, and advantage such as easy to use is given 30 of meter annual productions, 300,000 yuan of the output values, 150,000 yuan of the profits of making profits.
Embodiment 5: rated current, maximum current, the timely overall dimension of impedance induction reactance:
Claims (1)
1, a kind of power factor load box, Con φ=0.8, of the present utility model being characterized as: be the adjustable load box of power factor, Con φ=0～1, this case is made up of impedance load case and induction reactance load box, couples together with the head end of lead with 0.0/ ohm of two casees step value, by laminated brush switch K
1-K
7Respectively with each resistance value, the series connection of induction reactance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200702 CN2038657U (en) | 1988-01-20 | 1988-01-20 | Load device with adjustable power factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200702 CN2038657U (en) | 1988-01-20 | 1988-01-20 | Load device with adjustable power factor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2038657U true CN2038657U (en) | 1989-05-31 |
Family
ID=4836076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200702 Withdrawn CN2038657U (en) | 1988-01-20 | 1988-01-20 | Load device with adjustable power factor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2038657U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565714A (en) * | 2011-12-22 | 2012-07-11 | 福州福光电子有限公司 | Discharge capacity testing instrument of wide-voltage battery |
| CN103439534A (en) * | 2013-09-05 | 2013-12-11 | 苏州安泰变压器有限公司 | Impedance device for high-voltage load test |
| CN105242080A (en) * | 2015-10-22 | 2016-01-13 | 飞尔特能源(东莞)有限公司 | Power factor linearity adjustable resistance integrated load case |
| CN105548623A (en) * | 2016-02-27 | 2016-05-04 | 中国电子科技集团公司第四十研究所 | Large-current resistive load box |
| CN109581244A (en) * | 2018-10-25 | 2019-04-05 | 中国人民解放军63706部队 | High-power portable noninductive load case |
-
1988
- 1988-01-20 CN CN 88200702 patent/CN2038657U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565714A (en) * | 2011-12-22 | 2012-07-11 | 福州福光电子有限公司 | Discharge capacity testing instrument of wide-voltage battery |
| CN103439534A (en) * | 2013-09-05 | 2013-12-11 | 苏州安泰变压器有限公司 | Impedance device for high-voltage load test |
| CN103439534B (en) * | 2013-09-05 | 2016-04-20 | 苏州安泰变压器有限公司 | A kind of impedance means of high-voltage load test |
| CN105242080A (en) * | 2015-10-22 | 2016-01-13 | 飞尔特能源(东莞)有限公司 | Power factor linearity adjustable resistance integrated load case |
| CN105548623A (en) * | 2016-02-27 | 2016-05-04 | 中国电子科技集团公司第四十研究所 | Large-current resistive load box |
| CN109581244A (en) * | 2018-10-25 | 2019-04-05 | 中国人民解放军63706部队 | High-power portable noninductive load case |
| CN109581244B (en) * | 2018-10-25 | 2021-03-30 | 中国人民解放军63706部队 | High-power portable noninductive load box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |