JP2000258488A - Short-circuit test device and method thereof - Google Patents
Short-circuit test device and method thereofInfo
- Publication number
- JP2000258488A JP2000258488A JP11064007A JP6400799A JP2000258488A JP 2000258488 A JP2000258488 A JP 2000258488A JP 11064007 A JP11064007 A JP 11064007A JP 6400799 A JP6400799 A JP 6400799A JP 2000258488 A JP2000258488 A JP 2000258488A
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- Prior art keywords
- voltage
- power supply
- low
- terminal
- short
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title description 19
- 238000004804 winding Methods 0.000 claims description 64
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010998 test method Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 241000079527 Ziziphus spina-christi Species 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、交流電気回路の短
絡の有無を検出する短絡試験装置および方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short-circuit test apparatus and method for detecting the presence or absence of a short circuit in an AC electric circuit.
【０００２】[0002]
【従来の技術】従来より、この種の短絡試験装置として
特開平９−２１８２３４号公報に記載されているものが
ある。この短絡試験装置は、被検査対象となる交流電気
回路に接続して該交流電気回路の短絡の有無を検出する
装置において、短絡検出に用いるインピーダンスと、整
流器付き表示器を備え、前記インピーダンスを介して交
流電源を短絡検出用の電源として前記交流電気回路に接
続可能にし、前記交流電源と前記交流電気回路との接続
時に前記整流器付き表示器が前記交流電気回路と並列に
接続される構成とし、この表示器を通して短絡の有無を
判別可能にしてなるものである。2. Description of the Related Art A conventional short-circuit test apparatus of this type is disclosed in Japanese Patent Application Laid-Open No. 9-218234. This short-circuit test apparatus is an apparatus that is connected to an AC electric circuit to be inspected and detects the presence or absence of a short circuit in the AC electric circuit. The short-circuit test apparatus includes an impedance used for detecting a short circuit and a display with a rectifier. The AC power supply can be connected to the AC electric circuit as a power supply for short-circuit detection, and the display with the rectifier is connected in parallel with the AC electric circuit when the AC power supply is connected to the AC electric circuit, The presence or absence of a short circuit can be determined through this display.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
短絡試験装置においては、構造が複雑であり、かつ、価
格が高いという問題がある。However, the conventional short-circuit test apparatus has a problem that the structure is complicated and the price is high.
【０００４】本発明の目的は、構造が簡単であり、か
つ、価格が安い短絡試験装置および方法を提供すること
にある。[0004] It is an object of the present invention to provide a short-circuit test apparatus and method which are simple in structure and inexpensive.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するため
に、請求項１記載の発明は、１００Ｖ乃至４００Ｖの交
流電圧を発生する低圧交流電源と、低圧交流電源と被試
験対象である交流電気回路との間に接続されている過電
流遮断手段とを有することを特徴とする。In order to solve the above-mentioned problems, the present invention is directed to a low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, and a low-voltage AC power supply and an AC power supply to be tested. Overcurrent cutoff means connected between the circuit and the circuit.
【０００６】請求項２記載の発明は、１００Ｖ乃至４０
０Ｖの交流電圧を発生する低圧交流電源と、低圧交流電
源の一方の電源端子に接続されているスイッチと、スイ
ッチと被試験対象である変圧器の一方の１次側端子との
間に接続されている第１の過電流遮断装置と、低圧交流
電源の他方の電源端子と変圧器の他方の１次側端子との
間に接続されている第２の過電流遮断装置と、変圧器の
２つの２次側端子の間に接続されている電圧検出装置と
を有することを特徴とする。According to a second aspect of the present invention, there is provided
A low-voltage AC power supply for generating an AC voltage of 0 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and a switch connected between the switch and one primary terminal of a transformer under test. A first overcurrent interrupting device, a second overcurrent interrupting device connected between the other power terminal of the low-voltage AC power supply and the other primary terminal of the transformer, A voltage detecting device connected between the two secondary terminals.
【０００７】請求項３記載の発明は、１００Ｖ乃至４０
０Ｖの交流電圧を発生する低圧交流電源と、低圧交流電
源の一方の電源端子に接続されているスイッチと、スイ
ッチと被試験対象である交流回転機器の一方の端子との
間に接続されている第１の過電流遮断装置と、低圧交流
電源の他方の電源端子と交流回転機器の他方の端子との
間に接続されている第２の過電流遮断装置とを有するこ
とを特徴とする。According to a third aspect of the present invention, there is provided
A low-voltage AC power supply that generates an AC voltage of 0 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and a switch connected between the switch and one terminal of an AC rotating device to be tested. It is characterized by having a first overcurrent interrupting device and a second overcurrent interrupting device connected between the other power terminal of the low-voltage AC power supply and the other terminal of the AC rotating device.
【０００８】請求項４記載の発明は、１００Ｖ乃至４０
０Ｖの交流電圧を発生する低圧交流電源の交流電圧を被
試験対象である交流電気回路に印加するステップと、低
圧交流電源と交流電気回路との間に流れる過電流を検出
して低圧交流電源と交流電気回路との間を遮断するステ
ップとを有することを特徴とする。According to a fourth aspect of the present invention, there is provided
Applying an AC voltage of a low-voltage AC power supply that generates an AC voltage of 0 V to an AC electric circuit to be tested; and detecting an overcurrent flowing between the low-voltage AC power supply and the AC electric circuit to generate a low-voltage AC power supply. Disconnecting from an AC electric circuit.
【０００９】請求項５記載の発明は、１００Ｖ乃至４０
０Ｖの交流電圧を発生する低圧交流電源と、低圧交流電
源の一方の電源端子に接続されているスイッチと、スイ
ッチと被試験対象である変圧器の一方の１次側端子との
間に接続されている第１の過電流遮断装置と、低圧交流
電源の他方の電源端子と変圧器の他方の１次側端子との
間に接続されている第２の過電流遮断装置と、変圧器の
２つの２次側端子の間に接続されている電圧検出装置と
を有する短絡試験装置の短絡試験方法において、スイッ
チを閉じることにより変圧器の１次側巻線の電流を流す
ステップと、電圧検出装置が変圧器の２次側巻線に生じ
る電圧を検出するステップと、第１過電流遮断装置また
は第２の過電流遮断装置が低圧交流電源と変圧器の１次
側巻線との間に流れる過電流を検出して低圧交流電源と
変圧器の１次側巻線との間を遮断するステップとを有す
ることを特徴とする。According to a fifth aspect of the present invention, there is provided
A low-voltage AC power supply for generating an AC voltage of 0 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and a switch connected between the switch and one primary terminal of a transformer under test. A first overcurrent interrupting device, a second overcurrent interrupting device connected between the other power terminal of the low-voltage AC power supply and the other primary terminal of the transformer, A short-circuit test method for a short-circuit test device having a voltage detection device connected between two secondary terminals, wherein a current is passed through a primary winding of a transformer by closing a switch; Detecting a voltage generated in a secondary winding of the transformer, and the first overcurrent interrupter or the second overcurrent interrupter flows between the low-voltage AC power supply and the primary winding of the transformer. Primary current winding of low voltage AC power supply and transformer by detecting overcurrent Characterized by a step of interrupting the connection between the.
【００１０】請求項６記載の発明は、１００Ｖ乃至４０
０Ｖの交流電圧を発生する低圧交流電源と、低圧交流電
源の一方の電源端子に接続されているスイッチと、スイ
ッチと被試験対象である交流回転機器の一方の端子との
間に接続されている第１の過電流遮断装置と、低圧交流
電源の他方の電源端子と交流回転機器の他方の端子との
間に接続されている第２の過電流遮断装置とを有する短
絡試験装置の短絡試験方法において、スイッチを閉じる
ことにより交流回転機器に電流を流すステップと、第１
過電流遮断装置または第２の過電流遮断装置が低圧交流
電源と交流回転機器との間に流れる過電流を検出して低
圧交流電源と交流回転機器との間を遮断するステップと
を有することを特徴とする。The invention according to claim 6 is characterized in that the voltage is from 100 V to 40 V.
A low-voltage AC power supply that generates an AC voltage of 0 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and a switch connected between the switch and one terminal of an AC rotating device to be tested. A short-circuit test method for a short-circuit test device having a first overcurrent interrupter and a second overcurrent interrupter connected between the other power supply terminal of the low-voltage AC power supply and the other terminal of the AC rotating device. Flowing a current to the AC rotating device by closing a switch;
Detecting an overcurrent flowing between the low-voltage AC power supply and the AC rotating device to cut off between the low-voltage AC power supply and the AC rotating device. Features.
【００１１】[0011]
【発明の実施の形態】次に、本発明の実施の形態を図面
に基づいて詳細に説明する。本発明の第１の実施形態と
しての短絡試験装置は、１００Ｖ乃至４００Ｖの交流電
圧を発生する低圧交流電源１と、この低圧交流電源１の
一方の電源端子に接続されているスイッチ２と、このス
イッチ２と被試験対象の変圧器３の一方の１次側端子４
との間に接続されている第１の過電流遮断装置５と、低
圧交流電源１の他方の電源端子と変圧器３の他方の１次
側端子６との間に接続されている第２の過電流遮断装置
７と、変圧器３の２次側端子８、９の間に接続されてい
る電圧検出装置１０とを有している。変圧器３の１次側
端子４、６の間には、１次側巻線１１が接続されてい
る。変圧器３の２次側端子８、９の間には、２次側巻線
１２が接続されている。低圧交流電源１は、スイッチ２
および過電流遮断装置５、７を介して変圧器に接続され
ている。Next, embodiments of the present invention will be described in detail with reference to the drawings. The short-circuit test apparatus according to the first embodiment of the present invention includes a low-voltage AC power supply 1 that generates an AC voltage of 100 V to 400 V, a switch 2 connected to one power supply terminal of the low-voltage AC power supply 1, Switch 2 and one primary terminal 4 of transformer 3 under test
And a second overcurrent interrupter 5 connected between the other power supply terminal of the low-voltage AC power supply 1 and the other primary terminal 6 of the transformer 3. It has an overcurrent cutoff device 7 and a voltage detection device 10 connected between the secondary terminals 8 and 9 of the transformer 3. A primary winding 11 is connected between the primary terminals 4 and 6 of the transformer 3. A secondary winding 12 is connected between the secondary terminals 8 and 9 of the transformer 3. The low-voltage AC power supply 1 includes a switch 2
And overcurrent cutoff devices 5 and 7 are connected to a transformer.
【００１２】スイッチ２は、低圧交流電源１と変圧器３
の１次側巻線１１とを接続し、または、低圧交流電源１
と変圧器３の１次側巻線１１との間を遮断するものであ
る。過電流遮断装置５、７は、ＮＦＢまたはヒューズで
構成されている。過電流遮断装置５、７は、低圧交流電
源１と変圧器３の１次側巻線１１との間に流れる電流が
過電流にならないように予め定められた１０から２０ア
ンペア程度の規定電流よりオーバーした時に遮断し、低
圧交流電源１および変圧器３を保護する。電圧検出装置
１０は、変圧器３の内部における短絡等の異常の有無の
判断のための測定器である。電圧検出装置１０は、変圧
器３の２次側巻線１２に接続され電圧を測定する。The switch 2 includes a low-voltage AC power supply 1 and a transformer 3
Or the low-voltage AC power supply 1
And the primary winding 11 of the transformer 3. The overcurrent cutoff devices 5 and 7 are configured by NFBs or fuses. The overcurrent cutoff devices 5 and 7 are provided with a predetermined current of about 10 to 20 amperes so that a current flowing between the low-voltage AC power supply 1 and the primary winding 11 of the transformer 3 does not become an overcurrent. It shuts off when it exceeds, and protects the low-voltage AC power supply 1 and the transformer 3. The voltage detection device 10 is a measuring device for determining whether there is an abnormality such as a short circuit inside the transformer 3. The voltage detection device 10 is connected to the secondary winding 12 of the transformer 3 and measures a voltage.
【００１３】次に、変圧器３の内部の１次側巻線１１と
２次側巻線１２の構成について説明する。１次側巻線１
１は、通常において低圧交流電源１が１次側端子４、６
に接続され、１次側巻線１１に電流が流れると変圧器３
の内部に交番磁束を発生させる。この交番磁束は、内部
の鉄心により、２次側巻線１２に伝えられ、２次側巻線
１２に電圧が発生するので、２次側端子８、９の間の電
圧を電圧検出装置１０が検出することができる。Next, the configuration of the primary winding 11 and the secondary winding 12 inside the transformer 3 will be described. Primary winding 1
1 is a low-voltage AC power supply 1 that normally has primary terminals 4 and 6
When current flows through the primary winding 11, the transformer 3
Generates an alternating magnetic flux inside. This alternating magnetic flux is transmitted to the secondary winding 12 by an internal iron core, and a voltage is generated in the secondary winding 12, so that the voltage between the secondary terminals 8 and 9 is detected by the voltage detection device 10. Can be detected.
【００１４】次に、図１の短絡試験装置の動作を説明す
る。被試験対象である変圧器３に使用電圧を１次側端子
４、６に印加（受電）する前に、変圧器３の内部回路が
短絡状態でないことを確認しなければならない。そこ
で、低圧交流電源１を過電流遮断装置５、７を介して変
圧器３の１次側端子４、６に仮に接続する。変圧器３の
２次側端子８、９に電圧検出装置１０を接続する。この
状態にて、スイッチ２を投入し、低圧交流電源１の交流
電圧を変圧器３の１次側側端子４、６に印加する。Next, the operation of the short-circuit test apparatus shown in FIG. 1 will be described. Before applying (receiving) the operating voltage to the transformer 3 to be tested to the primary terminals 4 and 6, it is necessary to confirm that the internal circuit of the transformer 3 is not in a short-circuit state. Therefore, the low-voltage AC power supply 1 is temporarily connected to the primary terminals 4 and 6 of the transformer 3 via the overcurrent cutoff devices 5 and 7. The voltage detection device 10 is connected to the secondary terminals 8 and 9 of the transformer 3. In this state, the switch 2 is turned on, and the AC voltage of the low-voltage AC power supply 1 is applied to the primary terminals 4 and 6 of the transformer 3.
【００１５】この時に、電圧検出装置１０の検出電圧が
規定電圧と同じ値であれば、変圧器３の内部の１次側巻
線１１および２次側巻線１２は短絡状態でないことが確
認できる。規定電圧は、規定電圧＝低圧交流電圧値×変
圧器１の変圧比（２次定格電圧／１次定格電圧）で表さ
れる。At this time, if the voltage detected by the voltage detector 10 is the same as the specified voltage, it can be confirmed that the primary winding 11 and the secondary winding 12 inside the transformer 3 are not short-circuited. . The specified voltage is expressed as: specified voltage = low-voltage AC voltage value × transformation ratio of transformer 1 (secondary rated voltage / primary rated voltage).
【００１６】変圧器３の内部が短絡状態である場合は、
１次側巻線１１が短絡してる場合と２次側巻線１２が短
絡してる場合および１次側巻線１１と２次側巻線１２の
間が短絡してる場合が考えられる。When the inside of the transformer 3 is short-circuited,
It is considered that the primary winding 11 is short-circuited, the secondary winding 12 is short-circuited, and the primary winding 11 and the secondary winding 12 are short-circuited.
【００１７】（１）１次側巻線１１が短絡している場合
の動作を説明する。スイッチ２を投入した瞬間に短絡電
流が流れるが、過電流遮断装置５または７により電流が
１５〜２０アンペアとなった時点で低圧交流電源１と変
圧器３の１次側巻線１１との間が遮断される。変圧器３
の容量を５００ＫＶＡとした場合に、１次定格電流は４
３アンペア程度なので、短絡電流は１次定格電流より小
さくなり、変圧器３に損傷（ダメージ）を与えることは
ない。(1) The operation when the primary winding 11 is short-circuited will be described. A short-circuit current flows at the moment when the switch 2 is turned on, but when the current becomes 15 to 20 amperes by the overcurrent cutoff device 5 or 7, the short-circuit current between the low-voltage AC power supply 1 and the primary winding 11 of the transformer 3 Is shut off. Transformer 3
Is 500 KVA, the primary rated current is 4
Since the current is about 3 amps, the short-circuit current is smaller than the primary rated current, and the transformer 3 is not damaged.
【００１８】（２）２次側巻線１２が短絡している場合
の動作を説明する。スイッチ２を投入した瞬間に変圧器
３の１次側巻線１１と２次側巻線１２に短絡電流が流れ
るが、１次側巻線１１と２次側巻線１２の内部インピー
ダンスにより、この場合の１次および２次短絡電流はと
もに定格過電流以下に抑制される。したがって、変圧器
３に損傷を与えることがない。この場合、電圧検出装置
１０の検出電圧は、規定電圧より低い値となる。完全短
絡である場合には電圧検出装置１０の検出電圧は０であ
る。(2) The operation when the secondary winding 12 is short-circuited will be described. At the moment when the switch 2 is turned on, a short-circuit current flows through the primary winding 11 and the secondary winding 12 of the transformer 3, but due to the internal impedance of the primary winding 11 and the secondary winding 12, In this case, both the primary and secondary short-circuit currents are suppressed below the rated overcurrent. Therefore, the transformer 3 is not damaged. In this case, the detection voltage of the voltage detection device 10 has a value lower than the specified voltage. In the case of a complete short circuit, the detection voltage of the voltage detection device 10 is 0.
【００１９】（３）１次側巻線１１と２次側巻線１２の
間が短絡している場合の動作を説明する。スイッチ２を
投入した瞬間に短絡電流がアース線を通して流れるが、
過電流遮断装置５、７により電流が１５〜２０アンペア
となった時点で低圧交流電源１と変圧器３の１次側巻線
１１との間が遮断される。変圧器３の容量を５００ＫＶ
Ａとした場合、１次定格電流は４３アンペア程度なの
で、短絡電流は１次定格電流より小さくなり、変圧器３
に損傷（ダメージ）を与えることはない。この場合の短
絡電流は、１次側巻線１１が短絡している場合の短絡電
流より内部インピーダンスにより少し小さくなる場合が
ある。(3) The operation when the primary winding 11 and the secondary winding 12 are short-circuited will be described. At the moment when switch 2 is turned on, a short-circuit current flows through the ground wire.
When the current is reduced to 15 to 20 amperes by the overcurrent interruption devices 5 and 7, the connection between the low-voltage AC power supply 1 and the primary winding 11 of the transformer 3 is interrupted. Set the capacity of the transformer 3 to 500KV
A, the primary rated current is about 43 amps, so the short-circuit current is smaller than the primary rated current, and the transformer 3
It does not cause damage. The short-circuit current in this case may be slightly smaller due to the internal impedance than the short-circuit current when the primary winding 11 is short-circuited.
【００２０】次に、本発明の第２の実施形態を図面に基
づいて詳細に説明する。本発明の第２の実施形態は、被
試験対象がモータおよび発電機等の交流回転機器である
場合のものである。図２に示すように、本発明の第２の
実施形態としての短絡試験装置は、１００Ｖ乃至４００
Ｖの交流電圧を発生する低圧交流電源１と、この低圧交
流電源１の一方の電源端子に接続されているスイッチ２
と、このスイッチ２と被試験対象の交流回転機器１３の
巻線１４の一方の端子１５との間に接続されている第１
の過電流遮断装置５と、低圧交流電源１の他方の電源端
子と交流回転機器１３の巻線１４の他方の端子１６との
間に接続されている第２の過電流遮断装置７とを有して
いる。Next, a second embodiment of the present invention will be described in detail with reference to the drawings. The second embodiment of the present invention relates to a case where a test object is an AC rotating device such as a motor and a generator. As shown in FIG. 2, a short-circuit test apparatus according to a second embodiment of the present invention
V low-voltage power supply 1 for generating an AC voltage of V, and a switch 2 connected to one power supply terminal of the low-voltage AC power supply 1
And a first terminal 15 connected between the switch 2 and one terminal 15 of the winding 14 of the AC rotating device 13 to be tested.
And a second overcurrent interrupter 7 connected between the other power supply terminal of the low-voltage AC power supply 1 and the other terminal 16 of the winding 14 of the AC rotating device 13. are doing.
【００２１】過電流遮断装置５、７の規定電流を５から
１０アンペア程度にして、交流回転機器１３の巻線１４
の短絡状態を試験する。交流回転機器１３の巻線１４が
短絡している場合に、スイッチ２を投入した瞬間に短絡
電流が流れるが、過電流遮断装置５、７により電流が５
〜１０アンペアとなった時点で低圧交流電源１と交流回
転機器１３の巻線１４の間が遮断される。The specified current of the overcurrent cutoff devices 5 and 7 is set to about 5 to 10 amps, and the winding 14 of the AC rotating device 13 is turned on.
Test for short circuit condition. When the winding 14 of the AC rotating device 13 is short-circuited, a short-circuit current flows at the moment when the switch 2 is turned on.
When the current reaches 10 to 10 amps, the connection between the low-voltage AC power supply 1 and the winding 14 of the AC rotating device 13 is cut off.
【００２２】次に、本発明の第３の実施形態を図面に基
づいて詳細に説明する。本発明の第３の実施形態は、被
試験対象が単巻き変圧器である場合のものである。図３
に示すように、単巻き変圧器１７は、１次側巻線１１と
２次側巻線１２が１部を兼用しているものである。本発
明の第３の実施形態としての短絡試験装置は、１００Ｖ
乃至４００Ｖの交流電圧を発生する低圧交流電源１と、
この低圧交流電源１の一方の電源端子に接続されている
スイッチ２と、このスイッチ２と被試験対象の単巻き変
圧器１７の一方の１次側端子４との間に接続されている
第１の過電流遮断装置５と、低圧交流電源１の他方の電
源端子と単巻き変圧器１７の他方の１次側端子６との間
に接続されている第２の過電流遮断装置７と、単巻き変
圧器１７の２つの２次側端子８、９の間に接続されてい
る電圧検出装置１０とを有している。単巻き変圧器１７
の１次側端子４、６の間には、１次側巻線１１が接続さ
れている。単巻き変圧器１７の２次側端子８、９の間に
は、２次側巻線１２が接続されている。本発明の第３の
実施形態としての短絡試験装置の動作は、本発明の第１
の実施形態としての短絡試験装置の動作と同じである。
なお、本発明の上記実施形態においては、低圧交流電源
１としては、３相、単相の４００Ｖ、２００Ｖ、１００
Ｖの交流電圧を発生するものが用いられる。Next, a third embodiment of the present invention will be described in detail with reference to the drawings. The third embodiment of the present invention relates to a case where the test object is an autotransformer. FIG.
As shown in (1), in the single-turn transformer 17, the primary winding 11 and the secondary winding 12 share one part. The short-circuit test apparatus according to the third embodiment of the present invention
A low-voltage AC power supply 1 that generates an AC voltage of
A switch 2 connected to one power terminal of the low-voltage AC power supply 1 and a first terminal connected between the switch 2 and one primary terminal 4 of the single-turn transformer 17 to be tested. A second overcurrent interrupting device 7 connected between the other power supply terminal of the low-voltage AC power supply 1 and the other primary terminal 6 of the single-turn transformer 17; And a voltage detecting device 10 connected between the two secondary terminals 8 and 9 of the winding transformer 17. Single-turn transformer 17
A primary winding 11 is connected between the primary terminals 4 and 6. The secondary winding 12 is connected between the secondary terminals 8 and 9 of the single-turn transformer 17. The operation of the short-circuit test apparatus according to the third embodiment of the present invention is the same as that of the first embodiment of the present invention.
The operation is the same as that of the short-circuit test apparatus as the embodiment.
In the embodiment of the present invention, the low-voltage AC power supply 1 is a three-phase, single-phase 400 V, 200 V, 100 V
A device that generates an AC voltage of V is used.
【００２３】本発明の上記実施形態においては、交流電
気回路の据え付け場所（建設現場等）にて大がかりな短
絡試験装置が不要である。このため、試験費用および試
験準備期間はわずかである。また、本発明の上記実施形
態においては、試験時間が短く、高度な電気知識が不要
であるため専門技術者が不要である。In the above embodiment of the present invention, a large-scale short-circuit test device is not required at a place where an AC electric circuit is installed (such as a construction site). Therefore, the test cost and test preparation period are small. Further, in the above embodiment of the present invention, the test time is short and a high level of electrical knowledge is not required, so that a specialized engineer is not required.
【００２４】また、本発明の上記実施形態においては、
被試験対象である交流電気回路に印加する電圧、流れる
電流がそれぞれ、定格以下で短時間であるため、被試験
対象である交流電気回路にダメージを与えない非破壊検
査を行える。また、本発明の第１および第３の実施形態
においては、定格電圧より低い電圧にて仮受電（１次電
圧）するため、変圧器の２次仮電圧を測定することがで
きるので変圧器の変圧比が本受電前に確認できる。In the above embodiment of the present invention,
Since the voltage applied to the AC electric circuit to be tested and the flowing current are each less than or equal to the rated value for a short time, the non-destructive inspection without damaging the AC electric circuit to be tested can be performed. Further, in the first and third embodiments of the present invention, since the temporary receiving (primary voltage) is performed at a voltage lower than the rated voltage, the secondary temporary voltage of the transformer can be measured. Transformation ratio can be confirmed before receiving power.
【００２５】[0025]
【発明の効果】本発明によれば、構造が簡単であり、か
つ、価格が安い短絡試験装置および方法を提供できる。According to the present invention, it is possible to provide a short-circuit test apparatus and method which are simple in structure and inexpensive.
【図１】本発明の第１の実施形態としての短絡試験装置
を示す電気回路図である。FIG. 1 is an electric circuit diagram showing a short-circuit test device according to a first embodiment of the present invention.
【図２】本発明の第２の実施形態としての短絡試験装置
を示す電気回路図である。FIG. 2 is an electric circuit diagram showing a short-circuit test device according to a second embodiment of the present invention.
【図３】本発明の第３の実施形態としての短絡試験装置
を示す電気回路図である。FIG. 3 is an electric circuit diagram showing a short-circuit test device according to a third embodiment of the present invention.
１ 低圧交流電源 ２ スイッチ ３ 変圧器 ４ １次側端子 ５ 過電流遮断装置 ６ １次側端子 ７ 過電流遮断装置 ８、９ ２次側端子 １０ 電圧検出装置 １１ １次側巻線 １２ ２次側巻線 １３ 交流回転機器 １４ 巻線 １５、１６ 端子 １７ 単巻き変圧器 DESCRIPTION OF SYMBOLS 1 Low-voltage AC power supply 2 Switch 3 Transformer 4 Primary terminal 5 Overcurrent cutoff device 6 Primary terminal 7 Overcurrent cutoff device 8, 9 Secondary terminal 10 Voltage detection device 11 Primary winding 12 Secondary Winding 13 AC rotating equipment 14 Winding 15, 16 terminal 17 Single-turn transformer
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年６月５日（２０００．６．５）[Submission date] June 5, 2000 (2006.5.5)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Correction target item name] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するため
に、請求項１記載の発明の短絡試験装置は、１００Ｖ乃
至４００Ｖの交流電圧を発生する低圧交流電源と、この
低圧交流電源の一方の電源端子へ接続されたスイッチ
と、このスイッチと所定の被試験機の巻線の第１の端子
との間に接続され、予め定められた規定電流よりオーバ
ーした時に遮断動作する第１の過電流遮断装置と、低圧
交流電源の他方の電源端子と被試験機の巻線の第２の端
子との間に接続され、予め定められた規定電流よりオー
バーした時に遮断動作する第２の過電流遮断装置とを有
して構成され、規定電流の値を被試験機の過電流値と
し、被試験機の巻線の短絡状態発生の有無の検知を可能
としたことを特徴としている。According to a first aspect of the present invention, there is provided a short-circuit test apparatus comprising: a low-voltage AC power supply for generating an AC voltage of 100 V to 400 V; A first overcurrent that is connected between the switch connected to the power supply terminal and the first terminal of the winding of the predetermined device to be tested and that shuts off when the current exceeds a predetermined current; A second overcurrent interrupter, which is connected between the interrupting device and the other power supply terminal of the low-voltage AC power supply and the second terminal of the winding of the device under test, and performs an interrupting operation when the current exceeds a predetermined current. The device is characterized in that it is possible to detect the occurrence of a short-circuit state of the winding of the device under test by setting the value of the specified current as the overcurrent value of the device under test.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】請求項２記載の発明は、請求項１に記載の
短絡試験装置において、被試験機は変圧器、モータを含
み、この被試験機が２次巻線を有する場合は、２次側巻
線の２つの２次側端子間に接続され、この２次側端子間
の電圧を検出する電圧検出装置を、さらに有するとよ
い。According to a second aspect of the present invention, in the short-circuit test apparatus according to the first aspect, the device under test includes a transformer and a motor, and when the device under test has a secondary winding, the secondary side. It is preferable to further include a voltage detection device connected between the two secondary terminals of the winding and detecting a voltage between the secondary terminals.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】請求項３記載の発明は、請求項１または２
に記載の短絡試験装置において、検知の対象は、被試験
機の１次側巻線、２次側巻線、１次側巻線と２次側巻線
の両者間、の何れかの短絡状態発生の有無であるとする
とよい。[0007] The third aspect of the present invention is the first or second aspect.
In the short-circuit test apparatus described in 1 above, the detection target is any one of the short-circuit state of the primary winding, the secondary winding, and both of the primary winding and the secondary winding of the EUT. It is good to be the presence or absence of occurrence.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００８】請求項４記載の発明では、請求項１から３
の何れかに記載の短絡試験装置において、第１の過電流
遮断装置および第２の過電流遮断装置は、ＮＦＢまたは
フューズで構成されるとよい。[0008] According to the fourth aspect of the present invention, the first to third aspects are provided.
In the short-circuit test device according to any one of the above, the first overcurrent cutoff device and the second overcurrent cutoff device may be formed of NFB or a fuse.
【手続補正６】[Procedure amendment 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００９】請求項５記載の発明の短絡試験方法は、所
定の低圧交流電源で１００Ｖ乃至４００Ｖの交流電圧を
発生させ、この低圧交流電源の一方の電源端子にスイッ
チを接続し、このスイッチと被試験対象の１次巻線の一
方の端子との間に予め定められた規定電流よりオーバー
した時に遮断動作する第１の過電流遮断装置を接続し、
低圧交流電源の他方の電源端子と被試験対象の１次巻線
の他方の端子との間に予め定められた規定電流よりオー
バーした時に遮断動作する第２の過電流遮断装置を接続
し、スイッチを閉じることにより被試験対象の１次巻線
へ発生させた交流電圧の電流を流し、第１過電流遮断装
置または／および第２の過電流遮断装置が低圧交流電源
と被試験対象の１次側巻線との間に流れる過電流を検出
して遮断するか否かを確認し、被試験対象の端子間の１
次巻線に短絡状態の発生の有無の確認を可能としたこと
を特徴としている。According to the short-circuit test method of the present invention, a predetermined low-voltage AC power supply generates an AC voltage of 100 V to 400 V, and a switch is connected to one power supply terminal of the low-voltage AC power supply. Connecting a first overcurrent cutoff device that performs a cutoff operation when the current exceeds a predetermined current, between the terminal and one terminal of the primary winding to be tested;
A second overcurrent cut-off device, which is connected between the other power supply terminal of the low-voltage AC power supply and the other terminal of the primary winding under test when the current exceeds a predetermined current, is connected; The first overcurrent cut-off device and / or the second overcurrent cut-off device is connected to the low-voltage AC power supply and the primary device under test by closing the switch. Detect the overcurrent flowing between the side winding and the power
It is characterized in that it is possible to confirm whether or not a short circuit has occurred in the next winding.
【手続補正７】[Procedure amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１０】請求項６記載の発明では、請求項５に記載
の短絡試験方法において、被試験対象は変圧器、モータ
を含み、この被試験対象が２次巻線を有する場合は、こ
の２次側巻線の端子間の電圧を検出し、さらに２次巻線
に短絡状態の発生の有無の確認を可能とするとよい。According to a sixth aspect of the present invention, in the short-circuit test method according to the fifth aspect, the object to be tested includes a transformer and a motor. It is preferable that the voltage between the terminals of the side winding is detected, and further, it is possible to confirm whether or not a short-circuit state has occurred in the secondary winding.
Claims (6)
する低圧交流電源と、 該低圧交流電源と被試験対象である交流電気回路との間
に接続されている過電流遮断手段とを有することを特徴
とする短絡試験装置。1. A low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, and an overcurrent interrupting means connected between the low-voltage AC power supply and an AC electric circuit to be tested. And short circuit test equipment.
する低圧交流電源と、 該低圧交流電源の一方の電源端子に接続されているスイ
ッチと、 該スイッチと被試験対象である変圧器の一方の１次側端
子との間に接続されている第１の過電流遮断装置と、 前記低圧交流電源の他方の電源端子と前記変圧器の他方
の１次側端子との間に接続されている第２の過電流遮断
装置と、 前記変圧器の２つの２次側端子の間に接続されている電
圧検出装置とを有することを特徴とする短絡試験装置。2. A low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and one of the switch and one of a transformer to be tested. A first overcurrent cut-off device connected between the secondary terminal and a second terminal connected between the other power supply terminal of the low-voltage AC power supply and the other primary terminal of the transformer; A short-circuit test device, comprising: an overcurrent cutoff device according to any one of claims 1 to 4, and a voltage detection device connected between two secondary terminals of the transformer.
する低圧交流電源と、 該低圧交流電源の一方の電源端子に接続されているスイ
ッチと、 該スイッチと被試験対象である交流回転機器の一方の端
子との間に接続されている第１の過電流遮断装置と、 前記低圧交流電源の他方の電源端子と前記交流回転機器
の他方の端子との間に接続されている第２の過電流遮断
装置とを有することを特徴とする短絡試験装置。3. A low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and one of an AC rotating device to be tested and the switch. A first overcurrent interrupter connected between the second power supply terminal and the other terminal of the low-voltage AC power supply and the other terminal of the AC rotating device; And a short-circuit test device.
する低圧交流電源の交流電圧を被試験対象である交流電
気回路に印加するステップと、 前記低圧交流電源と交流電気回路との間に流れる過電流
を検出して前記低圧交流電源と交流電気回路との間を遮
断するステップとを有することを特徴とする短絡試験方
法。4. Applying an AC voltage of a low-voltage AC power supply that generates an AC voltage of 100 V to 400 V to an AC electric circuit to be tested, and an overcurrent flowing between the low-voltage AC power supply and the AC electric circuit. And shutting off the low-voltage AC power supply and the AC electric circuit.
する低圧交流電源と、 該低圧交流電源の一方の電源端子に接続されているスイ
ッチと、 該スイッチと被試験対象である変圧器の一方の１次側端
子との間に接続されている第１の過電流遮断装置と、 前記低圧交流電源の他方の電源端子と前記変圧器の他方
の１次側端子との間に接続されている第２の過電流遮断
装置と、 前記変圧器の２つの２次側端子の間に接続されている電
圧検出装置とを有する短絡試験装置の短絡試験方法にお
いて、 前記スイッチを閉じることにより前記変圧器の１次側巻
線の電流を流すステップと、 前記電圧検出装置が前記変圧器の２次側巻線に生じる電
圧を検出するステップと、 前記第１過電流遮断装置または前記第２の過電流遮断装
置が前記低圧交流電源と前記変圧器の１次側巻線との間
に流れる過電流を検出して前記低圧交流電源と前記変圧
器の１次側巻線との間を遮断するステップとを有するこ
とを特徴とする短絡試験方法。5. A low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and one of the switch and one of a transformer to be tested. A first overcurrent cut-off device connected between the secondary terminal and a second terminal connected between the other power supply terminal of the low-voltage AC power supply and the other primary terminal of the transformer; A short-circuit test method for a short-circuit test device, comprising: an overcurrent cutoff device, and a voltage detection device connected between two secondary terminals of the transformer. Flowing the current of the secondary winding; detecting the voltage generated in the secondary winding of the transformer by the voltage detecting device; and the first overcurrent interrupting device or the second overcurrent interrupting device. Is the low-voltage AC power supply Detecting an overcurrent flowing between the transformer and the primary winding of the transformer to cut off the connection between the low-voltage AC power supply and the primary winding of the transformer. Test method.
する低圧交流電源と、 該低圧交流電源の一方の電源端子に接続されているスイ
ッチと、 該スイッチと被試験対象である交流回転機器の一方の端
子との間に接続されている第１の過電流遮断装置と、 前記低圧交流電源の他方の電源端子と前記交流回転機器
の他方の端子との間に接続されている第２の過電流遮断
装置とを有する短絡試験装置の短絡試験方法において、 前記スイッチを閉じることにより前記交流回転機器に電
流を流すステップと、 前記第１過電流遮断装置または第２の過電流遮断装置が
前記低圧交流電源と前記交流回転機器との間に流れる過
電流を検出して前記低圧交流電源と前記交流回転機器と
の間を遮断するステップとを有することを特徴とする短
絡試験方法。6. A low-voltage AC power supply for generating an AC voltage of 100 V to 400 V, a switch connected to one power supply terminal of the low-voltage AC power supply, and one of an AC rotating device to be tested and the switch. A first overcurrent interrupter connected between the second power supply terminal and the other terminal of the low-voltage AC power supply and the other terminal of the AC rotating device; A short-circuit test method for a short-circuit test apparatus having a low-voltage AC power supply, wherein a current is supplied to the AC rotating device by closing the switch; and the first overcurrent cutoff device or the second overcurrent cutoff device is the low-voltage AC power supply. Detecting an overcurrent flowing between the low-voltage AC power supply and the AC rotary device by detecting an overcurrent flowing between the AC rotary device and the AC rotary device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064007A JP3123999B2 (en) | 1999-03-10 | 1999-03-10 | Short circuit test apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064007A JP3123999B2 (en) | 1999-03-10 | 1999-03-10 | Short circuit test apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000258488A true JP2000258488A (en) | 2000-09-22 |
| JP3123999B2 JP3123999B2 (en) | 2001-01-15 |
Family
ID=13245711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11064007A Expired - Fee Related JP3123999B2 (en) | 1999-03-10 | 1999-03-10 | Short circuit test apparatus and method |
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| Country | Link |
|---|---|
| JP (1) | JP3123999B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100451375B1 (en) * | 2002-07-10 | 2004-10-06 | 엘지산전 주식회사 | Apparatus for generating voltage sag and voltage swell |
| RU2506600C1 (en) * | 2012-08-28 | 2014-02-10 | Федеральное государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" | Method of testing power transformers for resistance to short-circuit currents |
| CN105977001A (en) * | 2016-07-19 | 2016-09-28 | 国家电网公司 | 10 kV automatic grounding alternating current transformer |
| CN113484797A (en) * | 2021-06-15 | 2021-10-08 | 中电电气(江苏)变压器制造有限公司 | Short-circuit bearing capacity test method for single-phase three-winding traction transformer for AT power supply |
-
1999
- 1999-03-10 JP JP11064007A patent/JP3123999B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100451375B1 (en) * | 2002-07-10 | 2004-10-06 | 엘지산전 주식회사 | Apparatus for generating voltage sag and voltage swell |
| RU2506600C1 (en) * | 2012-08-28 | 2014-02-10 | Федеральное государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" | Method of testing power transformers for resistance to short-circuit currents |
| CN105977001A (en) * | 2016-07-19 | 2016-09-28 | 国家电网公司 | 10 kV automatic grounding alternating current transformer |
| CN113484797A (en) * | 2021-06-15 | 2021-10-08 | 中电电气(江苏)变压器制造有限公司 | Short-circuit bearing capacity test method for single-phase three-winding traction transformer for AT power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3123999B2 (en) | 2001-01-15 |
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