Deyarîna Daristînê ya Elektrîkî ya Vakûmê

Vakum Dijarkerên Trip û Close Operations di Vakum Dijarkeran de

1. Pêşnûma

Gava "vakum dijarker" di hewce bike, dibe ku çendî nehatiye. Lê bi tevahî "dijarker" an "gerdanayê berdest" werin, hemû mirovan bêtir ê din biniyê. Gerçi, vakum dijarkeran ji komponantên girîngên sistemanên derbarzde yên modern ne, ku li ser parastina cihanên elektrik hatine wekariya. Heval, ya roj da, divê ye bikin vebijarka biryar — minimum voltage of operation for trip and close operations.

Ger çi teknîk dikin, vê li gorîn ê li ser minimum voltage of operation for trip and close operations. Yani, ew taybetmendiya ku dijarker bi rastî ê bikar bîne. Di yekem de, ew taybetmendiya ku dijarker ê bêtirînin wekaryan bi rastî ê bikar bîne.

2. Fonksiyonên Basetî yên Vakum Dijarkeran

2.1 Prinsîpê Wekariyê

Vakum dijarker dikare wek kutiya xweçîn bîne, lê li ser sistemanên elektrik wek superheroyê were kar kirin. Wekaryan bazî yên wê li ser parastina cihanên elektrik hatine wekariya, jêr misalê ku dijarker ê bikar bîne.

Hesab bikin ku gavê bi tevahî di sisteman de, vakum dijarker wek herkêmêrê çendî ve bikar bîne, ku li ser her kes û pîrozandina cihanên elektrik ê bikar bîne.

2.2 Girîngî ya Minimum Voltage of Operation

Minimum voltage of operation taybetmendiya ku dijarker bi rastî ê bikar bîne. Eger voltage-ya control ê bi tevahî dijarker ê bêtirînin wekaryan bi rastî ê bikar bîne, wek smartphone-a ku di rêza important de şopan bike.

Bi rastî bêtirînin wekaryan di heman şertan de, heqê voltage-ya control ê bêtirînin wekaryan bi rastî ê bikar bîne.

3. Voltage Requirements for Trip and Close Operations

3.1 Trip Voltage

"Trip" li gorîn ê li ser open the circuit. Bi tevahî, mekanizma operasyonê dijarker ê voltage-ya piştguhê hatine wekariya. Eger voltage-ya ê bi tevahî, trip coil ê bêtirînin electromagnetic force ê bikar bîne.

Wê li gorîn ê li ser start a car — eger fuel-ê bi tevahî, engine-ê şopan bike. Li gorîn, voltage-ya bi tevahî trip failure ê bikar bîne, ku cihan ê energized bikar bîne.

3.2 Close Voltage

"Close" li gorîn ê li ser re-closing the circuit after a trip. Ev operasyon voltage-ya piştguhê hatine wekariya.

Hesab bikin ku game-ê li ser power availability and stability hatine wekariya. Eger voltage-ya control ê unstable or too low, dijarker ê bêtirînin closing mechanism ê bikar bîne.

4. Selection of Minimum Operating Voltage

4.1 Standard Specifications

When selecting a vacuum circuit breaker, the minimum operating voltage must be carefully considered — much like choosing clothing that fits well both in style and function.

International standards (such as IEC 62271-1 and IEEE C37.09) specify that:

• The breaker should operate reliably at 85% of rated control voltage for closing.

• It should trip successfully at 70% of rated voltage.

• Operation below 65% is generally not guaranteed.

These thresholds ensure that the breaker performs reliably even under fluctuating or degraded control power conditions.

4.2 Practical Application

In real-world applications, the choice of minimum operating voltage depends on the specific requirements of the power system.

For example, in facilities with high load currents or long control cables, voltage drop can reduce the effective voltage reaching the coil. In such cases, selecting a breaker with a lower minimum operating voltage or using higher-rated control voltage (e.g., 220V instead of 110V) helps avoid misoperation.

Additionally, environments with extreme temperatures, humidity, or vibration may require enhanced coil designs or auxiliary boost circuits to maintain reliable operation.

5. Conclusion

While the concept of minimum operating voltage for trip and close operations may seem technical, it plays a crucial role in the safe and stable operation of power systems. Understanding its significance and selection criteria allows engineers and operators to make informed decisions.

Just as attention to detail improves daily life, meticulous control of electrical parameters ensures system resilience. Next time you see a circuit breaker, remember — it's not just a simple switch. It's a critical safeguard, and its ability to operate at the right voltage could mean the difference between safety and failure.

Don't underestimate the importance of minimum operating voltage — it might just save your system when it matters most.