SU121492A1 - Electric locking of explosion proof covers - Google Patents
Electric locking of explosion proof coversInfo
- Publication number
- SU121492A1 SU121492A1 SU587210A SU587210A SU121492A1 SU 121492 A1 SU121492 A1 SU 121492A1 SU 587210 A SU587210 A SU 587210A SU 587210 A SU587210 A SU 587210A SU 121492 A1 SU121492 A1 SU 121492A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- explosion proof
- electric locking
- proof covers
- network
- phases
- Prior art date
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
В насто щее врем в шахтах используют реле утечки, которое отключает участок сети при определеппой величине тока замыкани на землю.At the present time, leakage relays are used in mines, which turn off the network section at a certain amount of ground fault current.
Предлагаема блокировка крышек взрывобезопасных аппаратов дл указанных сетей более совершенна по сравнению с известными блокировками подобного рода, так как она обеспечивает срабатывание реле утечки при сн тии крышки с аппарата, наход щегос под напр жением.The proposed blocking of explosion-proof apparatus covers for these networks is more perfect than the known interlocks of this kind, since it ensures the operation of a leakage relay when the cap is removed from the apparatus under voltage.
Это достигаетс тем, что две фазы сети внутри оболочки аппарата соединены с заземленным корпусом через добавочные сопротивлени н блок-контакты, которые механически св заны с крышкой аппарата.This is achieved by the fact that the two phases of the network inside the shell of the apparatus are connected to a grounded housing through additional resistance block contacts, which are mechanically connected to the cover of the apparatus.
На чертеже изображена принципиальна схема предлагаемой блокировки .The drawing shows a schematic diagram of the proposed blocking.
Внутри коробки кабельных залсимов взрывобезопасного электрического аппарата помещаютс два активных сопротивлени /, которые подключены к рабочим фазам Л: и Л2 аппарата. Последовательно с ними включены сдвоенные нормально замкнутые контакты 2, соединенные с землей. При установленной на месте крышке аппарата контакты 2 размыкаютс щтифтом, наход щимс на ее внутренней стороне, вследствие чего в рабочем положении силовые фазы оказываютс незаземленными и нормальна работа сети не нарушаетс .Inside the cable conduit box of an explosion-proof electrical apparatus are placed two active resistances /, which are connected to the working phases L: and L2 of the apparatus. Consistently with them are included double normally closed contacts 2 connected to ground. When the apparatus cover is in place, the contacts 2 are opened by a pin on its inner side, as a result of which, in the working position, the force phases are ungrounded and the normal operation of the network is not disturbed.
При сн тии крышки с аппарата, вводные зажимы которого наход тс под напр жением, контакты 2 замкнутс и силовые фазы Л и Л через сопротивлени / будут заземлены. В результате этого сработает реле утечки и отключит участок сети, в которолг находитс данный аппарат.When the cover is removed from the apparatus, the input terminals of which are under voltage, the contacts 2 are closed and the power phases L and L through the resistance / will be grounded. As a result, the leakage relay will trip and shut off the network section in which this unit is located.
Предмет изобретени Subject invention
Электрическа блокировка крышек взрывобезопасных аппаратов дл сетей, которые снабжены реле утечки, отключающих участок сети при определенной величине тока аамыкани на землю, отличающа с тем, что, с целью обеспечени срабатывани реле утечки при сн тии крышки с аппарата, наход ш;егос под напр жением, две фазы сети внутри оболочки аппарата соединены с заземленным корпусом через добавочные сопротивлени и блок-контакты, которые механически св заны с крышкой аппарата.Electric blocking of explosion-proof apparatus covers for networks that are equipped with a leakage relay disconnecting a section of the network at a certain amount of current on the ground, characterized in that, in order to ensure that the leakage relay operates when the cover is removed from the device, The two phases of the network inside the shell of the apparatus are connected to a grounded housing through additional resistances and auxiliary contacts, which are mechanically connected to the lid of the apparatus.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU587210A SU121492A1 (en) | 1957-12-02 | 1957-12-02 | Electric locking of explosion proof covers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU587210A SU121492A1 (en) | 1957-12-02 | 1957-12-02 | Electric locking of explosion proof covers |
Publications (1)
Publication Number | Publication Date |
---|---|
SU121492A1 true SU121492A1 (en) | 1958-11-30 |
Family
ID=48393272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU587210A SU121492A1 (en) | 1957-12-02 | 1957-12-02 | Electric locking of explosion proof covers |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU121492A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2459334C1 (en) * | 2008-06-19 | 2012-08-20 | Шаньси Цюйаньань Нью Текнолоджи Девелопмент Ко., Лтд | Method and device to disconnect power supply prior to cover opening |
-
1957
- 1957-12-02 SU SU587210A patent/SU121492A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2459334C1 (en) * | 2008-06-19 | 2012-08-20 | Шаньси Цюйаньань Нью Текнолоджи Девелопмент Ко., Лтд | Method and device to disconnect power supply prior to cover opening |
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