SU996954A1 - Device for measuring resistance between phase and neutral grounding wires - Google Patents
Device for measuring resistance between phase and neutral grounding wires Download PDFInfo
- Publication number
- SU996954A1 SU996954A1 SU813329677A SU3329677A SU996954A1 SU 996954 A1 SU996954 A1 SU 996954A1 SU 813329677 A SU813329677 A SU 813329677A SU 3329677 A SU3329677 A SU 3329677A SU 996954 A1 SU996954 A1 SU 996954A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phase
- measuring resistance
- grounding wires
- neutral grounding
- resistance
- Prior art date
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- Measurement Of Resistance Or Impedance (AREA)
Description
154) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ СОПРОТИВЛЕНИЯ МЕЖДУ ФАЗНЫМ И ЗАНУЛЯЮЩИМ ПРОВОДОМ154) DEVICE FOR MEASURING THE RESISTANCE BETWEEN THE PHASE AND PERMITTING WIRES
Изобретение относитс к электротехнике и может быть использовано в устройствах дл измерени под напр жением сопротивлени защитных занул ющих контуров.The invention relates to electrical engineering and can be used in devices for measuring the resistance of protective seeding circuits under voltage.
Известно устройство дп измерени сопротивлени петли фаза-нуль под на-v пр жением путем замыкани цепи фазануль на калиброванное сопротивление,в котором дл обеспечени безопасности обслуживающего персонала дополни- тельный потенциометр включен последог вательно в цепь блока контрол напр жени L--JA device dp is used for measuring the resistance of a loop phase-zero under an -v voltage by closing a pheasant circuit to a calibrated resistance, in which, to ensure the safety of the personnel, an additional potentiometer is connected in series to the circuit of the voltage control unit L - J
Однако в устройстве требуетс предварительна настройка перед каждым измерением и учитываетс возможное изменение напр жени сети после калибровки, т.е. во врем измерени . Рассчитаны они на определенный номинал напр жени сети.However, the device requires pre-tuning before each measurement and takes into account possible changes in the network voltage after calibration, i.e. during measurement. They are designed for a certain nominal voltage.
Известно также устройство, содержашее подключенный между фазным и нулевым проводс1ми электроизмерительный прибор логометрического типа, обе рамки которого подключены через диоды противоположной пол рности парал лелг.но нагрузочной цепи, состо щей из последовательно соединенного калиброванного нагрузочного сопротивлени и диода, причем параллельно . каждой рамке прибора подключены конденсаторы 2.It is also known to have a device that is connected between a phase and a zero conductive electrical metering device, both frames of which are connected via opposite polarity diodes parallel to the load circuit consisting of a series-connected calibrated load resistance and a diode, and in parallel. Capacitors 2 are connected to each frame of the device.
Однако известное устройство не обеспечивает безопасности обслуживающего персонала, так как в нем не предусмотрена возможность отключени измерительной цепи при по влении на зану.г1енном корпусе электроустановto ки опасного потенциала.However, the known device does not ensure the safety of the service personnel, since it does not provide for the possibility of disconnecting the measuring circuit when a dangerous potential is installed on the electrical control panel of the electrical box.
Цель изобретени - повышение безопасности обслуживающего персонала путем вы влени на занул ющем проводе опасного потенциала.The purpose of the invention is to increase the safety of service personnel by detecting dangerous potential on the conductor.
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Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813329677A SU996954A1 (en) | 1981-08-01 | 1981-08-01 | Device for measuring resistance between phase and neutral grounding wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813329677A SU996954A1 (en) | 1981-08-01 | 1981-08-01 | Device for measuring resistance between phase and neutral grounding wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU996954A1 true SU996954A1 (en) | 1983-02-15 |
Family
ID=20973703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813329677A SU996954A1 (en) | 1981-08-01 | 1981-08-01 | Device for measuring resistance between phase and neutral grounding wires |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU996954A1 (en) |
-
1981
- 1981-08-01 SU SU813329677A patent/SU996954A1/en active
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