SU819747A1 - Device for measuring insulation resistance of three-phase electric network with insulated neutral - Google Patents
Device for measuring insulation resistance of three-phase electric network with insulated neutral Download PDFInfo
- Publication number
- SU819747A1 SU819747A1 SU772538280A SU2538280A SU819747A1 SU 819747 A1 SU819747 A1 SU 819747A1 SU 772538280 A SU772538280 A SU 772538280A SU 2538280 A SU2538280 A SU 2538280A SU 819747 A1 SU819747 A1 SU 819747A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- insulation resistance
- phase electric
- electric network
- measuring insulation
- insulated neutral
- Prior art date
Links
- 238000009413 insulation Methods 0.000 title description 5
- 230000007935 neutral effect Effects 0.000 title description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Description
54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ СОПРОТИВЛЕНИЯ ИЗОЛЯЦИИ ТРЕХФАЗНЫХ ЭЛЕКТРИЧЕСКИХ СЕТЕЙ С ИЗОЛИРОВАННОЙ НЕЙТРАЛЬЮ54) DEVICE FOR MEASURING THE RESISTANCE OF THE ISOLATION OF THREE-PHASE ELECTRIC NETWORKS WITH ISOLATED NEUTRAL
1one
Изобретение относитс к электроизмерительной технике и предназначено дл измерени и контрол сопротивлени изол ций электрических се .тей переменного тока, изолированных от земли (корпуса) , и может быть использовано при измерении сопротивлени изол ций сети, к которой подключены пот упроводниковые преобрагэователи (выпр .мители) дл питани силовых потребителей посто нного тока непосредственно от сети переменного тока (гребные электродвигате и и палубные механизмы на судах, т говые электродвигатели в горной промышленности).The invention relates to electrical measuring equipment and is designed to measure and monitor the insulation resistance of electrical ac networks, isolated from the ground (housing), and can be used to measure the insulation resistance of a network to which sweat conductor converters are connected. for powering direct current consumers directly from the AC network (propeller motors and deck mechanisms on ships, traction motors in the mining industry).
Известно устройство дл измере-ни сопротивлени .избл ции трехфазных сетей переменного тока, со,держащее последовательно соединенные источник посто нного тока, измерительный прибор, добавочный резистор и индуктивный фильтр Щ.A device is known for measuring the resistance of three-phase ac networks, co-holding a series-connected direct current source, a measuring device, an additional resistor, and an inductive filter Š.
Величина посто нного тока (протекаоощего через измерительшлй прибор ) определ етс как отношение напр жени к сумме величин добавоч ,ного сопротивлени и эквивалентного сопротивлени изол ции сети,.The amount of direct current (flowing through a measuring device) is defined as the ratio of the voltage to the sum of the values of the additional resistance and equivalent resistance of the network insulation.
т.е. ток есть функци сопротивлени изол ции.those. the current is an insulation resistance function.
Однако в сет х переменного тока , содержащих полупроводниковые преобразователи напр жени , имеетс гальваническа св зь с цеп ми посто нного тока, что приводит к по влению между каждой фазой и землейHowever, in AC networks containing semiconductor voltage converters, there is a galvanic connection to the DC circuits, which results in appearance between each phase and ground
посто нного напр жени и Дог,, величина которого дл трехфазной сети определ етс выраж;ениемconstant voltage and dog ,, the value of which for a three-phase network is determined by the expression;
3U«A R2-R. (..3U "A R2-R. (..
..
иand
ЛL
АОП 2ft R.AOP 2ft R.
R,R,
амплитуда линейного напр . жени сети переменного linear amplitude ex. network alternating
тока;current;
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772538280A SU819747A1 (en) | 1977-10-28 | 1977-10-28 | Device for measuring insulation resistance of three-phase electric network with insulated neutral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772538280A SU819747A1 (en) | 1977-10-28 | 1977-10-28 | Device for measuring insulation resistance of three-phase electric network with insulated neutral |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU819747A1 true SU819747A1 (en) | 1981-04-07 |
Family
ID=20730744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772538280A SU819747A1 (en) | 1977-10-28 | 1977-10-28 | Device for measuring insulation resistance of three-phase electric network with insulated neutral |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU819747A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2614187C1 (en) * | 2015-12-17 | 2017-03-23 | Общество с ограниченной ответственностью Научно-производственное предприятие "ЭКРА" | Determination method of the circuit insulation resistance and insulation resistance of the joined alternating current circuit with insulated neutral |
-
1977
- 1977-10-28 SU SU772538280A patent/SU819747A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2614187C1 (en) * | 2015-12-17 | 2017-03-23 | Общество с ограниченной ответственностью Научно-производственное предприятие "ЭКРА" | Determination method of the circuit insulation resistance and insulation resistance of the joined alternating current circuit with insulated neutral |
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