Öffner fallend bei 280mm

English translation: NC contact opening at 280mm

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
German term or phrase:Öffner fallend bei 280mm
English translation:NC contact opening at 280mm

15:29 Mar 13, 2019
    The asker opted for community grading. The question was closed on 2019-03-16 21:54:07 based on peer agreement (or, if there were too few peer comments, asker preference.)


German to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng
German term or phrase: Öffner fallend bei 280mm
I am translating a text about a hydraulic pump system which employed electromagnetic currents with various control blocks and I stumbled upon the phrase under the 'technical data section'.

I understand the meaning but I am unsure how this would be expressed correctly in English, in particular 'fallend' - any help appreciated!
Marcus Forrester
United Kingdom
Local time: 00:09
NC contact opening at 280mm
Explanation:
Where "280mm" represents some fluid level in the hydraulic system.
This distance/level has nothing to do with the gap of an open relay contact.

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Note added at 4 hrs (2019-03-13 20:04:45 GMT)
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"fallend" is rather equivocal in the description of a contact movement. The all important question: Does the relay pick up or drop out at the said 280mm. My proposal refers to the former.
Selected response from:

Herbie
Germany
Local time: 01:09
Grading comment
Thank you! I think I will go with your suggestion - it's much appreciated!
3 KudoZ points were awarded for this answer



Summary of answers provided
5break (or normally closed, NC, N/C) contact closes (at 280 mm)
Johannes Gleim
3 +1NC contact opening at 280mm
Herbie
3normally closed valve or contact
Kartik Isaac


Discussion entries: 9





  

Answers


39 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
Öffner fallend
normally closed valve or contact


Explanation:
Normally Closed (NC) valves or contacts. These are designed to be normally closed and to open on input. In this case the valve or contact opens to 280 mm. Hope this helps :)

Kartik Isaac
Switzerland
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 35
Login to enter a peer comment (or grade)

3 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +1
NC contact opening at 280mm


Explanation:
Where "280mm" represents some fluid level in the hydraulic system.
This distance/level has nothing to do with the gap of an open relay contact.

--------------------------------------------------
Note added at 4 hrs (2019-03-13 20:04:45 GMT)
--------------------------------------------------

"fallend" is rather equivocal in the description of a contact movement. The all important question: Does the relay pick up or drop out at the said 280mm. My proposal refers to the former.

Herbie
Germany
Local time: 01:09
Specializes in field
Native speaker of: German
PRO pts in category: 145
Grading comment
Thank you! I think I will go with your suggestion - it's much appreciated!

Peer comments on this answer (and responses from the answerer)
agree  Kim Metzger
2 days 1 hr
Login to enter a peer comment (or grade)

19 hrs   confidence: Answerer confidence 5/5
break (or normally closed, NC, N/C) contact closes (at 280 mm)


Explanation:
The term standardized by IEC is "break contact", but other designations as NC contact, N/C contact, normally closed contact are also common.

Area Elementary relays / Output circuits
IEV ref 444-04-18
en break contact (for elementary relays)
contact which is open when the relay is in its operate condition and which is closed when the relay is in its release condition
de Öffner (eines Elementarrelais), m
Ausschaltkontakt (eines Elementarrelais), m
http://www.electropedia.org/iev/iev.nsf/display?openform&iev...

opener der Öffner Pl.: die Öffner
break contact [TECH.] der Öffner Pl.: die Öffner
"b" contact [ELEKT.] der Öffner Pl.: die Öffner
normally closed contact [Abk.: NCC] [TECH.] der Öffner Pl.: die Öffner
https://dict.leo.org/englisch-deutsch/Öffner

break contact contact which is open when the relay operated and closed when the relay is released.
https://books.google.de/books?id=aN0gBQAAQBAJ&pg=SA16-PA8&lp...
(Electronics Engineer's Reference Book)

A normally closed (NC) contact pair is closed (in a conductive state) when it, or the device operating it, is in a deenergized state or relaxed state.[citation needed]
A normally open (NO) contact pair is open (in a non-conductive state) when it, or the device operating it, is in a deenergized state or relaxed state.[
:
The National Association of Relay Manufacturers and its successor, the Relay and Switch Industry Association define 23 distinct forms of electrical contact found in relays and switches.[5] Of these contact forms, the following are particularly common:
Form A contacts ("make contacts") are normally open contacts. The contacts are open when the energizing force (magnet or relay solenoid) is not present. When the energizing force is present, the contact will close. An alternate notation for Form A is SPST-NO.[5]
Form B contacts ("break contacts") are normally closed contacts. Its operation is logically inverted from Form A. An alternate notation for Form B is SPST-NC.[
https://en.wikipedia.org/wiki/Electrical_contacts

What is the most common designation?

"break contact"
About 317.000 results (0,35 seconds)
https://www.google.de/search?biw=1054&bih=690&ei=qyuKXMH8HsG...

"normally closed contact" About 313.000 results (0,31 seconds)
https://www.google.de/search?biw=1054&bih=690&ei=miyKXL3oMsP...

"NC contact" About 567.000 results (0,37 seconds)
https://www.google.de/search?biw=1054&bih=690&ei=1yyKXPLzAom...

and with "closes":

"normally closed contact closes" About 9.280 results (0,35 seconds), e.g.:

A normally-open contact closes at "1" and opens at "0". A normally-closed contact closes at "0" and opens at "1".
https://www.google.de/search?biw=1054&bih=690&ei=Cy6KXL-PDIv...

"NC contact closes" About 7.430 results (0,55 seconds), e.g.:

The temperature setting minus switch temperature difference (and tolerances) equals to the lower switch point, which means that the NC contact closes.
https://www.stego.de/en/products/regulating/regulators/fzk-0...

"N/C contact closes" About 1.200 results (0,98 seconds), e.g.:

When normal power drops out, the relay coil is deactivated, and N/C contact closes, creating the pathway for the emergency backup power to flow.
https://www.google.de/search?biw=1054&bih=690&ei=qS-KXN6hPMn...

"break contact closes" About 2.490 results (0,25 seconds), e.g.:

The relay also de-energizes (break contact closes) if no radio signal is received for at least 270s.
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

I do add (at 280 mm), even this specification is not very clear. It may refer to any liquid level or distance.

--------------------------------------------------
Note added at 3 days 19 hrs (2019-03-17 11:03:01 GMT) Post-grading
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Even the question has been closed I think it being useful to focus on the differences between the terms N/C and break. As seen below, the terms "normally open contact" and "break contact" are used interchangeably. There is only one slight difference: "normally open/closed contacts" are attributed regularly to contacts not regarding electrical loads as for relay contact configuration, and "break/make contacts" are related frequently to devices switching circuits.

An electrical contact is an electrical circuit component found in electrical switches, relays, connectors and circuit breakers.
:
When the contacts touch, the switch is "closed"; when the contacts are separated, the switch is "open".
:
Schematic for an electromechanical relay showing a coil, four pair of normally open and one pair of normally closed contacts
:
Form A contacts ("make contacts") are normally open contacts. The contacts are open when the energizing force (magnet or relay solenoid) is not present. An alternate notation for Form A is SPST-NO.
Form B contacts ("break contacts") are normally closed contacts. Its operation is logically inverted from Form A. An alternate notation for Form B is SPST-NC
Form C contacts ("change over" or "transfer" contacts) are composed of a normally closed contact pair and a normally open contact pair that are operated by the same device; there is a common electrical connection between a contact of each pair that results in only three connection terminals. These terminals are usually labelled as normally open, common, and normally closed (NO-C-NC). An alternate notation for Form C is SPDT.
:
Form Z or double-make double-break contacts are comparable to Form C contacts, but they almost always have four external connections, two for the normally open path and two for the normally closed path. As with forms X and Y, both current paths involve two contacts in series, mechanically linked and operated by a single actuator. Again, this is also described as an SPDT contact.
https://en.wikipedia.org/wiki/Electrical_contacts

A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices.
One type of float switch uses a mercury switch inside a hinged float. Another common type is a float that raises a rod to actuates a microswitch. One pattern uses a reed switch mounted in a tube; a float, containing a magnet, surrounds the tube and is guided by it. When the float raises the magnet to the reed switch, it closes.
https://en.wikipedia.org/wiki/Float_switch

A miniature snap-action switch, also trademarked and frequently known as a micro switch, is an electric switch that is actuated by very little physical force, through the use of a tipping-point mechanism, sometimes called an "over-center" mechanism.
:
The internals of a micro switch. Contacts, from left to right, are common, normally open, and normally closed.
https://en.wikipedia.org/wiki/Miniature_snap-action_switch

liquid level switch - break contact
https://gallery.proficad.eu/Symbols/house-electrical-symbols...

9.1.2 Operating mode selector switch
:
The device completes the circuit in the dry state (empty state) so that a fault at the device in the wiring results in a voltage drop that causes an alarm to be triggered (break circuit). Conversely, if the switch is to WET-ON, the device operates as n N/O contact (lower limiter) in fail-safe mode, in which case the fork is normally immersed in liquid.
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd...

Contact “Normal” State and Make/Break Sequence
Chapter 4 – Switches
Any kind of switch contact can be designed so that the contacts “close” (establish continuity) when actuated, or “open” (interrupt continuity) when actuated. For switches that have a spring-return mechanism in them, the direction that the spring returns it to with no applied force is called the normal position. Therefore, contacts that are open in this position are called normally open and contacts that are closed in this position are called normally closed.
:
Multiposition switches can be either break-before-make (most common) or make-before-break.
https://www.allaboutcircuits.com/textbook/digital/chpt-4/con...

Johannes Gleim
Local time: 01:09
Specializes in field
Native speaker of: German
PRO pts in category: 449
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