DE608291C - Phase break relay - Google Patents

Phase break relay

Info

Publication number
DE608291C
DE608291C DENDAT608291D DE608291DD DE608291C DE 608291 C DE608291 C DE 608291C DE NDAT608291 D DENDAT608291 D DE NDAT608291D DE 608291D D DE608291D D DE 608291DD DE 608291 C DE608291 C DE 608291C
Authority
DE
Germany
Prior art keywords
relay
voltages
triangle
area
phase break
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.)
Expired
Application number
DENDAT608291D
Other languages
German (de)
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Publication date
Application granted granted Critical
Publication of DE608291C publication Critical patent/DE608291C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H02H3/353—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system involving comparison of phase voltages

Landscapes

  • Control Of Electrical Variables (AREA)

Description

PhasenbruchrelaisPhase break relay

Es ist bekannt, den Bruch eines Phasenleiters in Drehstromnetzen : durch ein. Relais erkennbar zu machen, welches das Vorhandensein der drei Netzspannungen und auch ihre Größe überwacht.It is known to break a phase conductor in three-phase networks: by a. relay to make recognizable which the presence of the three mains voltages and also their Size monitors.

Gemäß der Erfindung wird ein anderer Weg zur Überwachung der Symmetrie beschütten-, der vor allem den Vorteil hat, daß man nur zwei Spannungen braucht. Die Erfindung beruht darauf, daß der Flächeninhalt des gleichseitigen Spannungsdreiecks gleich dem halben Produkt zweier Spannungen multipliziert mit dem Sinus des Winkels zwischen diesen beiden Spannungen ist. Erfindungsgemäß wird der Flächeninhalt des Spannungsdreiecks mit Hilfe eines Blindwattmeterrelais überwacht, das ein diesem Produkt proportionales Drehmoment entwickelt. Insbesondere eignet sich dazu ein Ferrarisrelais, dessen Triebkerne durch zwei Netzspannungen erregt werden. Dabei kann die Anordnung so getroffen werden, daß, sobald der Flächeninhalt unter einen gewissen Betrag sinkt, ein Signal- oder Auslösestromkreis betätigt wird. Das Relais ist dann in der Lage, sowohl bei Phasenbruch als auch bei gleichmäßiger Verkleinerung aller Spannungen anzusprechen.According to the invention, another way of monitoring the symmetry is pouring, which has the main advantage that you only need two voltages. The invention is based on the fact that the area of the equilateral stress triangle is equal to the half the product of two voltages multiplied by the sine of the angle between these two tensions is. According to the invention, the area of the voltage triangle is determined with the aid of a blind wattmeter relay monitors that develops a torque proportional to this product. In particular A Ferraris relay is suitable for this, the drive cores of which are excited by two mains voltages will. The arrangement can be made so that as soon as the area is below drops a certain amount, a signal or trip circuit is actuated. The relay is then able both with phase break and with uniform reduction of all Addressing tensions.

In Fig. ι ist ein Ausführungsbeispiel der Erfindung wiedergegeben. Darin bedeutet 1 die Achse und 2 die Scheibe eines Ferrarissystems. Durch eine Federkraft, die vorteilhafterweise einstellbar gemacht wird, erhält das System eine bestimmte Nullage. Die Triebkerne 4 und 5 des Systems liegen zu beiden Seiten der Scheibe. Die beiden Magnetsysteme sind von zwei verketteten Spannungen erregt. Wie aus dem unteren Teil der Figur hervorgeht, ist der untere Triebkern von der Spannung E1 zwischen den Phasenleitern R und T, der obere Triebkern von der Spannung E2 zwischen den Phasenleitern R und S erregt. Zwischen den Spannungen E1 und"2i2 besteht eiii Winkel von normalerweise 60 °. Das Drehmoment, welches auf die Ferrarisscheibe 2 ausgeübt wird, ist proportional dem Produktiv und E2 und ferner proportional dem Sinus des Phasenwinkels zwischen beiden Spannungen. Solange das Ferrarissystem ein ausreichendes Drehmoment entwickelt, d. h. solange der Flächeninhalt des Spannungsdreiecks R, S, T genügend groß ist, wird ein Kontakt 6 im Stromkreis eines Relais 7, welches eine Signaleinrichtung oder eine Schaltvorrichtung betätigt, nicht geschlossen. Sobald sich aber das Spannungsdreieck R, S, T derart ändert, daß sein Flächeninhalt unter einen gewissen Grenzwert sinkt, sei es infolge einer Verzerrung des Dreiecks, sei es weil alle Dreieckspannungen sich um ein bestimmtes Maß verringern, wird der Kontakt 6 geschlossen.In Fig. Ι an embodiment of the invention is shown. 1 means the axis and 2 the disc of a Ferrari system. A spring force, which is advantageously made adjustable, gives the system a specific zero position. The drive cores 4 and 5 of the system are on both sides of the disc. The two magnet systems are excited by two linked voltages. As can be seen from the lower part of the figure, the lower drive core is excited by the voltage E 1 between the phase conductors R and T, and the upper drive core is excited by the voltage E 2 between the phase conductors R and S. Between the voltages E 1 and "2i 2 there is an angle of normally 60 °. The torque which is exerted on the Ferrari disk 2 is proportional to the productive and E 2 and also proportional to the sine of the phase angle between the two voltages. As long as the Ferrari system is on develops sufficient torque, as long as the surface area that is the voltage triangle R, S, T is sufficiently large, a contact 6 in the circuit of a relay 7 which actuates a signaling device or a switching device, not closed. but as soon as the voltage triangle R, S, T changes in such a way that its surface area drops below a certain limit value, be it due to a distortion of the triangle, be it because all triangular voltages decrease by a certain amount, the contact 6 is closed.

Claims (2)

60 Patentansprüche:60 claims: 1. Phasenbruchrelais, gekennzeichnet durch ein Blindwattmeterrelais, welches zur Überwachung des Flächeninhaltes des Spannungsdreiecks von zwei beliebigen Seitenspannungen des Spannungsdreiecks oder einem Teil dieser Spannungen erregt wird.1. Phase break relay, characterized by a blind wattmeter relay, which for monitoring the area of the tension triangle of any two side tensions of the tension triangle or part of these voltages is excited. 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß zwei Netzspannungen auf eine unter der Einwirkung einer Direktionskraft stehende Ferrarisscheibe ein dem Flächeninhalt des Spannungsdreiecks proportionales Drehmoment ausüben, welches einer auf Schließung eines Kontaktes hinwirkenden Direktionskraft entgegengerichtet ist.2. Arrangement according to claim 1, characterized in that two mains voltages on a Ferrari disk under the action of a directional force Exercise the area of the voltage triangle proportional torque, which one acts towards the closure of a contact Directional power is opposed.
DENDAT608291D Phase break relay Expired DE608291C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE608291T

Publications (1)

Publication Number Publication Date
DE608291C true DE608291C (en) 1935-01-23

Family

ID=6575783

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT608291D Expired DE608291C (en) Phase break relay

Country Status (1)

Country Link
DE (1) DE608291C (en)

Similar Documents

Publication Publication Date Title
DE608291C (en) Phase break relay
DE479788C (en) Display device for extinguishing devices in which an artificial network earth fault is brought about
DE518226C (en) Device for displaying the earth-faulty phase in multi-phase networks
AT116948B (en) Earth fault indicator.
DE655511C (en) Three-phase current meter, in which the number of otherwise common drive systems is doubled
DE901671C (en) Device for the detection of oscillations or the dropping out of power plants
DE881151C (en) Coil core with clamping device for strips, tapes or films
DE1588142A1 (en) Device for counting electrical surges
DE524252C (en) Inductive train control
DE377055C (en) Moment meter for measuring the flow rate of gases and liquids in a bypass arrangement
DE968864C (en) Formation of ring cable junction fields
DE616311C (en) relay
DE592683C (en) Protective box with detachable cover and walls for electrical fuses, breakers and similar installation devices arranged on fastening strips
AT107636B (en) Signaling device for railway translations in level.
DE615019C (en) Protection device for capacitor banks connected to the network
DE532010C (en) Device for selective protection of high-voltage transformers
AT128270B (en) Main current electromagnet for AC induction meters.
DE949298C (en) Modular control panel with control counting
DE248095C (en)
AT151065B (en) Circuit arrangement for railway safety devices.
AT133253B (en) Arrangement for triggering electrical contact closures by scanning the width of a film strip.
DE722297C (en) Window shutter fitting
DE739700C (en) Middle buffer
DE885402C (en) Arrangement to increase the sensitivity of relays, especially for track circuits in railway safety systems
DE692266C (en) dependent auxiliary relay