JPH04149922A - Sf6 gas filling load-switch with gas leak detector - Google Patents

Sf6 gas filling load-switch with gas leak detector

Info

Publication number
JPH04149922A
JPH04149922A JP27241190A JP27241190A JPH04149922A JP H04149922 A JPH04149922 A JP H04149922A JP 27241190 A JP27241190 A JP 27241190A JP 27241190 A JP27241190 A JP 27241190A JP H04149922 A JPH04149922 A JP H04149922A
Authority
JP
Japan
Prior art keywords
gas
alarm
circuit
voltage
gas leak
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
Application number
JP27241190A
Other languages
Japanese (ja)
Inventor
Takashi Yoshida
隆 吉田
Arinobu Nagahata
長畑 有信
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP27241190A priority Critical patent/JPH04149922A/en
Publication of JPH04149922A publication Critical patent/JPH04149922A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02Details
    • H01H33/53Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56Gas reservoirs
    • H01H33/563Gas reservoirs comprising means for monitoring the density of the insulating gas

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

PURPOSE:To simplify the construction of a whole device, and also to detect gas leakage correctly by making an alarm generated an alarm generation means by a circuit, when an output voltage of a semiconductor type pressure sensor for detecting gas pressure inside a load-switch, reaches the reference voltage of a gas leak detector circuit. CONSTITUTION:When gas inside a sealed container 1 gradually decreases, outside air invades therein and SF6 gas concentration reaches 50% and outside air concentration reaches 50%, output voltage corresponding to its pressure is output from a semiconductor pressure sensor 11 to a gas leak detector circuit 12. The circuit 12 inputs the output voltage to a non-reversal input terminal of a voltage comparator 28 through a temperature compensating circuit 25, to compare it with the reference voltage. When air invades in the container 1 filled with SF6 gas, a low level voltage is output from the comparator 28 to a lock mechanism device 8 and an alarm indicating device 9 and the device 8 holds the condition of a moving contact 2 through a driving axis 6, thus alarm is generated from the device 9 to inform gas leakage to workers.

Description

【発明の詳細な説明】 [産業上の利用分野コ この発明は、ガス洩れ検知付きS F aガス封入負荷
開閉器に係り、特に低圧ガスを封入した軽負荷開閉器の
ガス洩れの監視に関するものである。
[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a load switch filled with S Fa gas with gas leak detection, and particularly relates to monitoring of gas leakage of a light load switch filled with low pressure gas. It is.

[従来の技術] 第8図は特開昭61−227327号公報に示されたS
F6ガス封入負荷開閉器の温度補償継電装置を示すブロ
ック図、第9図は特開昭63−114015号公報に示
されたSF6ガス封入負荷開閉器のガス圧監視装置を示
す回路図である。     Cまず、第8図に示すブロ
ック図に基づいて説明する。ガス圧力検出器(32)か
開閉機器内(30)のガス圧力をガス配管(31)より
検出して電気信号に変換し、ガス温度検出器(33)が
そのガス配管(31)よりガス温度を検出して電気信号
に変換すると、それぞれの電気信号は、前置増幅器(3
4a) 、 (34b)で増幅されて信号伝送線(35
a) 、 (35b)を介して温度補償付圧力継電装置
(36)の絶縁増幅器(37a) 。
[Prior art] Figure 8 shows the S
FIG. 9 is a block diagram showing a temperature compensation relay device for a load switch filled with F6 gas. FIG. . C First, explanation will be given based on the block diagram shown in FIG. The gas pressure detector (32) or the gas pressure in the switchgear (30) is detected from the gas piping (31) and converted into an electrical signal, and the gas temperature detector (33) detects the gas temperature from the gas piping (31). is detected and converted into an electrical signal, each electrical signal is sent to a preamplifier (3
4a) and (34b) and then sent to the signal transmission line (35
a) the isolation amplifier (37a) of the temperature compensated pressure relay device (36) via (35b);

(37b)に伝送される。この時、マイクロコンピュー
タ(39)は、マルチプレクサ(38)とA/D変換器
(40)とを制御して絶縁増幅器(37a) 、 (3
7b)の電気信号を入カポ−1−(41)から読み込ん
で、ガス圧力値の換算を行い基準値と比較する。換算後
のガス圧力が基準値より小さい時には、マイクロコンピ
ュータ(39)は、出力ボート(42)を通じて警報出
力を警報接点励磁コイル(43)に、また鎖錠出力を鎖
錠接点励磁コイル(44)に送るとともにガス圧力換算
後の値を表示装置(45)に出力する。なお、マイクロ
コンピュータ(39)は、計時装置(46)の計測時間
が予め設定された一定時間に達したとき動作を開始する
(37b). At this time, the microcomputer (39) controls the multiplexer (38) and the A/D converter (40) to convert the isolation amplifiers (37a) and (3
7b) is read from the input capo-1-(41), and the gas pressure value is converted and compared with the reference value. When the converted gas pressure is lower than the reference value, the microcomputer (39) sends an alarm output to the alarm contact excitation coil (43) through the output boat (42), and a lock output to the lock contact excitation coil (44). At the same time, the converted gas pressure value is output to the display device (45). Note that the microcomputer (39) starts operating when the time measured by the timer (46) reaches a preset fixed time.

次に、第9図の回路図に基づいて説明する。ガス絶縁開
閉器(図示せず)に取り付けられているn個のガス圧セ
ンサー(41)からのアナログ電流は、選択リレー接点
(42)及びアイソレーター(43) (ノイズ除去用
)を介してプログラマブルφロジック・コントローラ(
44) (以下、rPLClという)のアナログ入力部
(45)へ入力する。PLC演算部(47)より動作指
令がデジタル出力部(48)を介して各選択リレー(4
6)に出されるため、P L C(44)は、1ガス区
分づつアナログ電流を入力してサンプリングし、演算部
(47)でガス圧低下判定処理を行い、その結果である
各ガス区分の第1段警報、第2段警報、ガス正値データ
等かP L C(44)のデータリング部(49)を介
して伝送路(図示せず)により上位監視制御装置へ伝送
される。
Next, a description will be given based on the circuit diagram shown in FIG. Analog currents from n gas pressure sensors (41) attached to a gas insulated switch (not shown) are programmed via selection relay contacts (42) and isolators (43) (for noise removal). Logic controller (
44) (hereinafter referred to as rPLCl) to the analog input section (45). Operation commands are sent from the PLC calculation unit (47) to each selection relay (4) via the digital output unit (48).
6), the PLC (44) inputs and samples the analog current for each gas segment, performs gas pressure drop judgment processing in the arithmetic unit (47), and calculates the result for each gas segment. The first-stage alarm, second-stage alarm, gas positive value data, etc. are transmitted to the upper-level monitoring and control device via a data ring section (49) of the PLC (44) via a transmission path (not shown).

[発明が解決しようとする課題] 上記の先行技術のうち第8図に示す特開昭61−227
327号公報においては、開閉機器(30)側にガス配
管(31)とガス圧力検出器(32)とガス温度検出器
(33)と前置増幅器(34a) 、 (34b)とを
必要とするため、ガス検出部としての構成が複雑になる
とともに大形になり、また装置全体として回路構成が複
雑になるという欠点があった。また、第9図に示す特開
昭63−114015号公報においては、複数のガス圧
センサーから開閉器内のガス圧をサンプリングしている
ため、ガス圧低下の判定に時間がかかるという問題があ
った。
[Problem to be solved by the invention] Among the above-mentioned prior art, Japanese Patent Application Laid-Open No. 61-227 shown in FIG.
Publication No. 327 requires a gas pipe (31), a gas pressure detector (32), a gas temperature detector (33), and preamplifiers (34a) and (34b) on the switchgear (30) side. Therefore, the structure of the gas detection section becomes complicated and large, and the circuit structure of the device as a whole becomes complicated. Furthermore, in Japanese Patent Application Laid-Open No. 63-114015 shown in Fig. 9, the gas pressure inside the switch is sampled from multiple gas pressure sensors, so there is a problem that it takes time to determine whether the gas pressure has decreased. Ta.

この発明は、かかる課題を解決するためになされたもの
で、負荷開閉器の構成を複雑にすることなく、所定量の
ガス洩れを正確に検知して警報を発するガス洩れ検知付
きSF6ガス封入負荷開閉器を得ることを目的とする。
This invention was made to solve this problem, and is an SF6 gas-filled load with gas leak detection that accurately detects a predetermined amount of gas leak and issues an alarm without complicating the configuration of the load switch. The purpose is to obtain a switch.

[課題を解決するための手段] この発明に係るガス洩れ検知付きSF6ガス封入負荷開
閉器は、SF6ガス封入負荷開閉器の筐体に取り付けら
れ、その負荷開閉器内の圧力に対応した電圧を出力する
半導体式圧力センサと、前記SF6ガス封入負荷開閉器
の筐体に取り付けられ、前記半導体式圧力センサの出力
電圧が予め設定された基準電圧に達したときには、ガス
洩れ検出信号を出力するガス洩れ検知回路と、前記SF
6ガス封入負荷開閉器の筐体に取り付けられ、ガス洩れ
検出信号が入力されたとき警報を発する警報発生手段と
を備えたものである。
[Means for Solving the Problems] The SF6 gas-filled load switch with gas leak detection according to the present invention is attached to the casing of the SF6 gas-filled load switch, and is configured to generate a voltage corresponding to the pressure inside the load switch. A semiconductor pressure sensor that outputs a gas leak detection signal that is attached to the housing of the SF6 gas-filled load switch and outputs a gas leak detection signal when the output voltage of the semiconductor pressure sensor reaches a preset reference voltage. A leakage detection circuit and the SF
This device is equipped with an alarm generating means that is attached to the casing of the six-gas filled load switch and issues an alarm when a gas leak detection signal is input.

[作用] この発明においては、S F eガス封入負荷開閉器の
筐体に取り付けられた半導体式圧力センサがその負荷開
閉器内の圧力に対応した電圧をガス洩れ検知回路に出力
しているため、そのガス洩れ検知回路は、出力電圧と予
め設定された基準電圧値とを比較しており、出力電圧が
基準電圧に達したときにはガス洩れ検出信号を警報発生
手段に出力する。警報発生手段がそのガス洩れ検出信号
を入力すると警報を発して作業員に知らせる。
[Function] In this invention, the semiconductor pressure sensor attached to the housing of the S Fe gas-filled load switch outputs a voltage corresponding to the pressure inside the load switch to the gas leak detection circuit. The gas leak detection circuit compares the output voltage with a preset reference voltage value, and outputs a gas leak detection signal to the alarm generating means when the output voltage reaches the reference voltage. When the alarm generating means receives the gas leak detection signal, it issues an alarm and notifies the operator.

[実施例コ 第1図はこの発明の一実施例を示すガス洩れ検知付きS
F6ガス封入負荷開閉器の側断面図、第2図は半導体式
圧力センサの側断面図、第3図はその圧力センサの回路
図、第4図は半導体式圧力センサの出力特性図、第5図
はガス洩れ検知回路の回路図、第6図はその回路の出力
特性図、第7図はガス洩れ検知のブロック図である。
[Embodiment Figure 1 shows an S with gas leak detection which shows one embodiment of this invention.
Fig. 2 is a side sectional view of the F6 gas-filled load switch, Fig. 2 is a side sectional view of the semiconductor pressure sensor, Fig. 3 is the circuit diagram of the pressure sensor, Fig. 4 is the output characteristic diagram of the semiconductor pressure sensor, Fig. 5 FIG. 6 is a circuit diagram of the gas leak detection circuit, FIG. 6 is an output characteristic diagram of the circuit, and FIG. 7 is a block diagram of gas leak detection.

図において、(1)は開閉器の密封容器、(2)は電気
回路の開閉動作をする可動接触子、(3)は可動接触子
(2)に対応して設けられた固定接触子、(4)はブッ
シング(5)を介して接触子(2)、(3)と外部機器
(図示せず)とを接続する導体である。
In the figure, (1) is the sealed container of the switch, (2) is the movable contact that opens and closes the electric circuit, (3) is the fixed contact provided corresponding to the movable contact (2), ( 4) is a conductor that connects the contacts (2), (3) and an external device (not shown) via the bushing (5).

(6)は密封容器(11)の外側に取付けられた駆動レ
バー(7)によって可動接触子(2)を操作する駆動軸
、(8)は開閉器をロックするロック機構装置、(9)
は警報表示装置である。
(6) is a drive shaft that operates the movable contact (2) by a drive lever (7) attached to the outside of the sealed container (11); (8) is a lock mechanism device that locks the switch; (9)
is an alarm display device.

(11)は密封容器(1)の上部に取付けられた半導体
式圧力センサで、第2図及び第3図に示すように、断面
がほぼコの字状に形成され上面に4個の素子抵抗でブリ
ッジ回路を構成している素子(15)と、台座(16)
を介してその素子(15)を固着するとと共に中央部に
開口部(19)を設けて外気を流入させる基板(17)
と、密封容器(1)に挿入する空気・ガス封入管(14
)を設けたケース(13)とからなり、素子(I5)の
第1の素子抵抗(20)と第2の素子抵抗(21)の接
続部と第3の素子抵抗(22)と第4の素子抵抗(23
)の接続部とがリード線(18)を介してDC電源(2
4)に接続され、第1の素子抵抗(20)と第4の素子
抵抗(23)の接続部と第2の素子抵抗(21)と第3
の素子抵抗(22)の接続部とから次式に基づいた出力
電圧がリード線(18)を介して後述するガス洩れ検知
回路(12)に出力される。
(11) is a semiconductor pressure sensor attached to the upper part of the sealed container (1), and as shown in Figs. 2 and 3, the cross section is approximately U-shaped, and four element resistors are mounted on the top surface. The element (15) that constitutes the bridge circuit and the pedestal (16)
A substrate (17) through which the element (15) is fixed and an opening (19) is provided in the center to allow outside air to flow in.
and an air/gas filled tube (14) inserted into the sealed container (1).
) and a case (13) provided with Element resistance (23
) is connected to the DC power supply (2) via the lead wire (18).
4), and the connecting portion between the first element resistor (20) and the fourth element resistor (23), the second element resistor (21), and the third element resistor (23).
An output voltage based on the following equation is output from the connecting portion of the element resistor (22) via a lead wire (18) to a gas leak detection circuit (12) to be described later.

V  −[(RxR−R2xR4)/(R1+R+R3
+R4)] xi 素子(15)が空気・ガス封入管(14)を介して流入
するガスの圧力と開口部(19)から流入してくる外気
の圧力との差圧に基づいて湾曲するため、第1の素子抵
抗(20)〜第4の素子抵抗(23)の抵抗定数は、そ
の度合いにより変化し、第4図に示すような圧力特性と
なる。Plの圧力(■■Hg)に対して出力電圧はVl
 (V)に、またR2の圧力に対して出力電圧はV2と
なり、圧力と出力電圧は双方共比例関係にある。上述し
た密封容器(1)内には、外気圧より0.2〜0.3 
)cg / cシ高いSF6ガスが10(1%充填され
ているため、半導体式圧力センサ(11)はその圧力に
対応した出力電圧を出力している。
V − [(RxR−R2xR4)/(R1+R+R3
+R4)] Since the xi element (15) curves based on the pressure difference between the pressure of the gas flowing in through the air/gas filled tube (14) and the pressure of the outside air flowing in from the opening (19), The resistance constants of the first element resistance (20) to the fourth element resistance (23) change depending on the degree, resulting in pressure characteristics as shown in FIG. The output voltage is Vl for the pressure of Pl (■■Hg)
(V), and the output voltage is V2 with respect to the pressure of R2, and both the pressure and the output voltage are in a proportional relationship. Inside the sealed container (1) mentioned above, there is a pressure of 0.2 to 0.3 below the outside pressure.
) cg/c Since the high SF6 gas is filled by 10% (1%), the semiconductor pressure sensor (11) outputs an output voltage corresponding to the pressure.

(12)はガス漏れ検知回路で、入力側に設けられた温
度補償回路(25)と、その温度補償回路(25)の出
力側に非反転入力端子が接続され、また直列に接続され
た第1の制御抵抗(26)と第2の制御抵抗(27)と
の接続部に反転入力端子が接続された電圧比較器(28
)とからなり、反転入力端子には、外気の圧力が50%
、SF6ガスが50%が混入されて得られる基準電圧が
予め設定されており、第1の制御抵抗(26)と第2の
制御抵抗(27)との分圧比で定められている。密封容
器(1)内のガス圧が正常なときは、その電圧比較器(
28)からハイレベルの電圧が上述したロック機構装置
(8)と警報表示装置(9)とに出力されている。
(12) is a gas leak detection circuit, which includes a temperature compensation circuit (25) provided on the input side, a non-inverting input terminal connected to the output side of the temperature compensation circuit (25), and a gas leak detection circuit connected in series. A voltage comparator (28) has an inverting input terminal connected to the connection between the first control resistor (26) and the second control resistor (27).
), and the inverting input terminal has 50% of the outside air pressure.
, a reference voltage obtained by mixing 50% of SF6 gas is set in advance, and is determined by the partial pressure ratio of the first control resistor (26) and the second control resistor (27). When the gas pressure inside the sealed container (1) is normal, its voltage comparator (
28), a high level voltage is outputted to the above-mentioned locking mechanism device (8) and alarm display device (9).

次に、異常時つまり密封容器(1)内のガスが洩れて外
気が密封容器(1)の内部に浸入してきたときの動作を
説明する。密封容器(1)内のガスが次第に減少すると
ともに外気が侵入して、SF6ガスが50%、外気が5
0%に達すると、半導体式圧力センサ(11)はその圧
力に対応した出力電圧をガス洩れ検知回路(12)に出
力するため、ガス洩れ検知回路(12)は、その出力電
圧を温度補償回路(25)を介して電圧比較器(28)
の非反転入力端子に入力して基準電圧と比較する。この
場合、SF6ガスが50%、外気が50%であるため、
電圧比較器(28)からは第6図に示すようにローレベ
ルの電圧をロック機構装置(8)と警報表示装置(9)
とに出力する。
Next, the operation in an abnormal situation, that is, when the gas inside the sealed container (1) leaks and outside air enters the inside of the sealed container (1) will be explained. As the gas in the sealed container (1) gradually decreases, the outside air enters, and the SF6 gas is 50% and the outside air is 5%.
When the pressure reaches 0%, the semiconductor pressure sensor (11) outputs an output voltage corresponding to the pressure to the gas leak detection circuit (12), so the gas leak detection circuit (12) outputs the output voltage to the temperature compensation circuit. Voltage comparator (28) through (25)
input to the non-inverting input terminal of , and compare it with the reference voltage. In this case, since SF6 gas is 50% and outside air is 50%,
As shown in Figure 6, the voltage comparator (28) outputs the low level voltage to the locking mechanism device (8) and the alarm display device (9).
Output to.

ロック機構装置(8)は可動接触子(2)の状態を駆動
軸(6)を介してを保持し、警報表示装置(9)は警報
を発して負荷開閉器のガス洩れを作業員に知らせる。
The lock mechanism device (8) maintains the state of the movable contact (2) via the drive shaft (6), and the alarm display device (9) issues an alarm to notify the operator of a gas leak from the load switch. .

[発明の効果] 以上のようにこの発明によれば、負荷開閉器内のガス圧
を検出している半導体式圧力センサの出力電圧がガス洩
れ検知回路の基準電圧に達すると、そのガス洩れ検知回
路が警報発生手段に警報を発するようにしたので、従来
より装置全体の構成が簡単になると共に、ガス洩れを正
確に検知できるという効果が得られている。
[Effects of the Invention] As described above, according to the present invention, when the output voltage of the semiconductor pressure sensor that detects the gas pressure in the load switch reaches the reference voltage of the gas leak detection circuit, the gas leak is detected. Since the circuit issues the alarm to the alarm generating means, the overall structure of the apparatus is simpler than in the past, and gas leaks can be detected accurately.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例を示すガス洩れ検知付きS
F6ガス封入負荷開閉器の側断面図、第2図は半導体式
圧力センサの側断面図、第3図はその圧力センサの回路
図、第4図は半導体式圧力センサの出力特性図、第5図
はガス漏れ検知回路の回路図、第6図はその回路の出力
特性図、第7図はガス洩れ検知のブロック図、第8図は
特開昭81−227327号公報に示されたSF6ガス
封入負荷開閉器の温度補償継電装置を示すブロック図、
第9図は特開昭63−114015号公報に示されたS
F6ガス封入負荷開閉器のガス圧監視装置を示す回路図
である。 図において、(8)はロック機構装置、(9)は警報表
示装置、(11)は半導体式圧力センサ、(12)はガ
ス漏れ検知回路、(13)はケース、(14)は空気・
ガス封入管、(15)は素子、(16)は台座、(17
)は基板、(18)はリード線、(19)は開口部、(
20)は第1の素子抵抗、(21)は第2の素子抵抗、
(22)は第3の素子抵抗、(23)は第4の素子抵抗
、(24)はDC電源、(25)は温度補償回路、(2
6)は第1の制御抵抗、(27)は第2の制御抵抗、(
28)は電圧比較器である。 なお、図中同一符号は同−又は相当部分を示す。 代理人 弁理士 佐 々 木 宗 治 第 図 23第4の素子爪才靴 謳:OC*唐、 反力 (mmHgl 第 図 第 図
Figure 1 shows an S with gas leak detection, showing an embodiment of the present invention.
Fig. 2 is a side sectional view of the F6 gas-filled load switch, Fig. 2 is a side sectional view of the semiconductor pressure sensor, Fig. 3 is the circuit diagram of the pressure sensor, Fig. 4 is the output characteristic diagram of the semiconductor pressure sensor, Fig. 5 The figure shows the circuit diagram of the gas leak detection circuit, Fig. 6 shows the output characteristics of the circuit, Fig. 7 shows the block diagram of the gas leak detection, and Fig. 8 shows the SF6 gas shown in Japanese Unexamined Patent Publication No. 81-227327. A block diagram showing a temperature compensated relay device for an enclosed load switch,
Figure 9 shows the S
FIG. 2 is a circuit diagram showing a gas pressure monitoring device for an F6 gas-filled load switch. In the figure, (8) is a lock mechanism device, (9) is an alarm display device, (11) is a semiconductor pressure sensor, (12) is a gas leak detection circuit, (13) is a case, and (14) is an air
Gas-filled tube, (15) is element, (16) is pedestal, (17)
) is the board, (18) is the lead wire, (19) is the opening, (
20) is the first element resistance, (21) is the second element resistance,
(22) is the third element resistance, (23) is the fourth element resistance, (24) is the DC power supply, (25) is the temperature compensation circuit, (2
6) is the first control resistance, (27) is the second control resistance, (
28) is a voltage comparator. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Patent Attorney Muneharu Sasaki Fig. 23 Fourth element: OC*Tang, reaction force (mmHgl)

Claims (1)

【特許請求の範囲】 SF_6ガスが外気に近い圧力で封入されているSF_
6ガス封入負荷開閉器において、該SF_6ガス封入負
荷開閉器の筐体に取り付けられ、その負荷開閉器内の圧
力に対応した電圧を出力する半導体式圧力センサと、 前記SF_6ガス封入負荷開閉器の筺体に取り付けられ
、前記半導体式圧力センサの出力電圧が予め設定された
基準電圧に達したときには、ガス洩れ検出信号を出力す
るガス洩れ検知回路と、前記SF_6ガス封入負荷開閉
器の筐体に取り付けられ、ガス洩れ検出信号が入力され
たとき警報を発する警報発生手段と を備えたことを特徴とするガス洩れ検知付きSF_6ガ
ス封入負荷開閉器。
[Claims] SF_6 gas is sealed at a pressure close to the outside air.
In the SF_6 gas-filled load switch, a semiconductor pressure sensor is attached to the casing of the SF_6 gas-filled load switch and outputs a voltage corresponding to the pressure inside the load switch; A gas leak detection circuit is attached to the casing and outputs a gas leak detection signal when the output voltage of the semiconductor pressure sensor reaches a preset reference voltage, and a gas leak detection circuit is attached to the casing of the SF_6 gas-filled load switch. 1. An SF_6 gas-filled load switch with gas leak detection, characterized in that the SF_6 gas-filled load switch is equipped with an alarm generating means that issues an alarm when a gas leak detection signal is input.
JP27241190A 1990-10-12 1990-10-12 Sf6 gas filling load-switch with gas leak detector Pending JPH04149922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27241190A JPH04149922A (en) 1990-10-12 1990-10-12 Sf6 gas filling load-switch with gas leak detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27241190A JPH04149922A (en) 1990-10-12 1990-10-12 Sf6 gas filling load-switch with gas leak detector

Publications (1)

Publication Number Publication Date
JPH04149922A true JPH04149922A (en) 1992-05-22

Family

ID=17513533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27241190A Pending JPH04149922A (en) 1990-10-12 1990-10-12 Sf6 gas filling load-switch with gas leak detector

Country Status (1)

Country Link
JP (1) JPH04149922A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022130321A1 (en) * 2020-12-17 2022-06-23 Scorcioni Alessandro Vehicle battery safety system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022130321A1 (en) * 2020-12-17 2022-06-23 Scorcioni Alessandro Vehicle battery safety system

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