JPS63156534U - - Google Patents
Info
- Publication number
- JPS63156534U JPS63156534U JP4716787U JP4716787U JPS63156534U JP S63156534 U JPS63156534 U JP S63156534U JP 4716787 U JP4716787 U JP 4716787U JP 4716787 U JP4716787 U JP 4716787U JP S63156534 U JPS63156534 U JP S63156534U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- power transformer
- voltage
- insertion detector
- circuit
- 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.)
- Pending
Links
- 230000001629 suppression Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Protection Of Transformers (AREA)
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の第１実施例を示す回路図、
第２図はこの考案の第２実施例を示す回路図、第
３図及び第４図はそれぞれ従来例を示す回路図で
ある。
図中、Ｒは電流抑制抵抗、Ｔｒは電源トランス
、１は電流抑制制御回路、ＳＷは開閉スイツチ、
Ｆ１，Ｆ２はヒユーズ、Ｔはタイマ、Ｃはコンタ
クタ、ｃ１はコンタクタの常開接点、ＭＣＢは主
幹しや断器、ＵＶは不足電圧検出リレー、ＴＣは
トリツプコイルである。
FIG. 1 is a circuit diagram showing a first embodiment of this invention;
FIG. 2 is a circuit diagram showing a second embodiment of this invention, and FIGS. 3 and 4 are circuit diagrams showing conventional examples, respectively. In the figure, R is a current suppression resistor, Tr is a power transformer, 1 is a current suppression control circuit, SW is an open/close switch,
F1 and F2 are fuses, T is a timer, C is a contactor, c1 is a normally open contact of the contactor, MCB is a main circuit breaker, UV is an undervoltage detection relay, and TC is a trip coil.
Claims (1)
介挿されたことを電源トランスの二次側電圧が定
格電圧より所定電圧低下したことにより検出する
抵抗介挿検出器と、該抵抗介挿検出器の検出信号
に基づき前記電源トランスの二次側負荷をしや断
するしや断器とを備えたことを特徴とするトラン
ス突入電流抑制抵抗の焼損防止回路。 A resistor insertion detector detects that a current suppression resistor is inserted in series on the primary side of a power transformer when the secondary voltage of the power transformer drops by a predetermined voltage from the rated voltage, and the resistor insertion detector A burnout prevention circuit for a transformer inrush current suppressing resistor, characterized in that the circuit comprises a circuit breaker for cutting off a secondary side load of the power transformer based on a detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4716787U JPS63156534U (en) | 1987-03-30 | 1987-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4716787U JPS63156534U (en) | 1987-03-30 | 1987-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63156534U true JPS63156534U (en) | 1988-10-13 |
Family
ID=30867514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4716787U Pending JPS63156534U (en) | 1987-03-30 | 1987-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63156534U (en) |
-
1987
- 1987-03-30 JP JP4716787U patent/JPS63156534U/ja active Pending
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