RU94040068A - Phase-to-ground fault protective device for insulated-neutral mains - Google Patents
Phase-to-ground fault protective device for insulated-neutral mainsInfo
- Publication number
- RU94040068A RU94040068A RU94040068/07A RU94040068A RU94040068A RU 94040068 A RU94040068 A RU 94040068A RU 94040068/07 A RU94040068/07 A RU 94040068/07A RU 94040068 A RU94040068 A RU 94040068A RU 94040068 A RU94040068 A RU 94040068A
- Authority
- RU
- Russia
- Prior art keywords
- elements
- gate
- zero
- diode assembly
- auxiliary
- Prior art date
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- Emergency Protection Circuit Devices (AREA)
Abstract
FIELD: electrical engineering. SUBSTANCE: device has zero-sequence current transformers 3,4 mounted on connections 1,2, current-to-DC voltage changers 5,6, integrating elements 7,8, threshold elements 9,10, coincidence gates 11, 12, pulse stretchers 13, 14, final elements 15,16, NOR gate 17, NOT gate 18, OR gate 19, INHIBIT gate 20, starting element 21, low-frequency blocking unit 22, zero-sequence potential transformer 23, main reference-voltage source 24 and auxiliary one 25, making switch 26 and breaking switch 27, diode assembly 28. Newly introduced are OR, NOT, INHIBIT gates, low-frequency blocking unit, diode assembly auxiliary reference-voltage source, making and breaking switches. EFFECT: enlarged functional capabilities of device, improved accuracy of locating faulty connection. 1 cl, 1 dwg
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94040068A RU2082269C1 (en) | 1994-10-26 | 1994-10-26 | Device for protection against single-phase short- circuit to ground in power supply line with insulated neutral wire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU94040068A RU2082269C1 (en) | 1994-10-26 | 1994-10-26 | Device for protection against single-phase short- circuit to ground in power supply line with insulated neutral wire |
Publications (2)
Publication Number | Publication Date |
---|---|
RU94040068A true RU94040068A (en) | 1996-09-10 |
RU2082269C1 RU2082269C1 (en) | 1997-06-20 |
Family
ID=20162099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU94040068A RU2082269C1 (en) | 1994-10-26 | 1994-10-26 | Device for protection against single-phase short- circuit to ground in power supply line with insulated neutral wire |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2082269C1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2614528C1 (en) * | 2016-03-31 | 2017-03-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Device for protecting power transmission of two parallel-connected cables in electrical network with insulated neutral of single-phase ground fault |
-
1994
- 1994-10-26 RU RU94040068A patent/RU2082269C1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
RU2082269C1 (en) | 1997-06-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20131027 |