JPH0230234U - - Google Patents
Info
- Publication number
- JPH0230234U JPH0230234U JP10928188U JP10928188U JPH0230234U JP H0230234 U JPH0230234 U JP H0230234U JP 10928188 U JP10928188 U JP 10928188U JP 10928188 U JP10928188 U JP 10928188U JP H0230234 U JPH0230234 U JP H0230234U
- Authority
- JP
- Japan
- Prior art keywords
- phase
- voltage
- undervoltage
- detection circuit
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
第１図は、この考案の一実施例を示す不足電圧
継電器の回路ブロツク図、第２図は、同不足電圧
継電器の波形整形回路の出力禁止回路を示す回路
接続図である。
１：不足電圧継電器、２：電力供給ライン、４
ａ，４ｂ，４ｃ：不足電圧検出部、１１ａ，１１
ｂ，１１ｃ：入力トランス、１７：ＯＲ回路、１
９：出力回路、２０：出力リレー、Ｎａ，Ｎｂ，
Ｎｃ，Ｎｏ：禁止端子。
FIG. 1 is a circuit block diagram of an undervoltage relay showing an embodiment of this invention, and FIG. 2 is a circuit connection diagram showing an output inhibiting circuit of a waveform shaping circuit of the undervoltage relay. 1: Undervoltage relay, 2: Power supply line, 4
a, 4b, 4c: undervoltage detection section, 11a, 11
b, 11c: input transformer, 17: OR circuit, 1
9: Output circuit, 20: Output relay, N a , N b ,
Nc , No : Inhibited terminals.
Claims (1)
相毎の電圧検出回路と、これら各電圧検出回路で
検出される電圧が整定値以下である場合に、その
旨を示す信号を出力する相互の不足電圧検出回路
と、これら不足電圧検出回路の論理和出力に応答
し、三相電力供給ラインのしや断器を断するリレ
ーを駆動する出力回路を備える不足電圧継電器に
おいて、 前記各不足電圧検出回路の出力を個別かつ選択
的に禁止する出力動作禁止回路を相毎に備えたこ
とを特徴とする不足電圧継電器。[Claims for Utility Model Registration] A voltage detection circuit for each phase that detects voltage for each phase of a three-phase power supply line, and a voltage detection circuit for each phase that detects voltage when the voltage detected by each of these voltage detection circuits is below a set value. An undervoltage detection circuit that outputs a signal indicating that the undervoltage detection circuit An undervoltage relay characterized in that each phase is provided with an output operation prohibition circuit that individually and selectively inhibits the output of each of the undervoltage detection circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10928188U JPH0724906Y2 (en) | 1988-08-20 | 1988-08-20 | Undervoltage relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10928188U JPH0724906Y2 (en) | 1988-08-20 | 1988-08-20 | Undervoltage relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0230234U true JPH0230234U (en) | 1990-02-26 |
| JPH0724906Y2 JPH0724906Y2 (en) | 1995-06-05 |
Family
ID=31345382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10928188U Expired - Lifetime JPH0724906Y2 (en) | 1988-08-20 | 1988-08-20 | Undervoltage relay |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724906Y2 (en) |
-
1988
- 1988-08-20 JP JP10928188U patent/JPH0724906Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0724906Y2 (en) | 1995-06-05 |