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A Few Insights About Air Circuit Breakers
Air circuit breaker is an electrical appliance with protection function. In the event of a severe overload or short circuit fault, the air circuit breaker will disconnect. In normal use, we rarely manually disconnect the air circuit breaker.
Next, we will briefly talk about the little knowledge of air circuit breakers.
We all know that ACB will be equipped with a controller, so what are the models of the controller?
The controller model have
Mic2.0/2.0A/2.0E
Mic5.0/5.0A/5.0E/5.0P/5.0H
Mic6.0/6.0A/6.0E/6.0P/6.0H
Mic7.0A/7.0P/7.0H
So what's the difference between Mic2.0, Mic5.0, Mic6.0 and Mic7.0?
|
|
Mic2.0 |
Mic5.0 |
Mic6.0 |
Mic7.0 |
|
Current protection |
long time + instantaneous |
long time + short time + instantaneous |
long time + short time + instantaneous + earth fault |
long time + short time + instantaneous + earth leakage up to 3200A |
So what's the difference between A,E,P and H?
|
Type |
Measurements and programmable protection |
|
Basic type |
◆ Basic long delay, short delay, instantaneous protection, ground fault protection ◆ Long delay warning function |
|
A: ammeter |
◆ I 1 , I2 , I3 , IN, Iearth-fault, Iearth-leakage and maximeter for these measurements ◆ fault indications ◆ settings in amperes and in seconds. |
|
E: Energy |
◆ incorporates all the rms measurements of MicroLogic A, plus voltage, power factor, power and energy metering measurements ◆ calculates the current demand value ◆ "Quickview" function for the automatic cyclical display of the most useful values (as standard or by selection).
|
|
P: A + power meter + programmable protection
|
◆ measurements of V, A, W, VAR, VA, Wh, VARh, VAh, Hz, Vpeak, Apeak, power factor and maximeters and minimeters ◆ IDMTL long-time protection, minimum and maximum voltage and frequency, voltage and current imbalance, phase sequence, reverse power ◆ load shedding and reconnection depending on power or current ◆ measurements of interrupted currents, differentiated fault indications, maintenance indications, event histories and time-stamping, etc. |
|
H: P + harmonics
|
◆ power quality: fundamentals, distortion, amplitude and phase of harmonics up to the 31st order ◆ waveform capture after fault, alarm or on request ◆ enhanced alarm programming: thresholds and actions. |
The above is a brief introduction to the control unit of the air circuit breaker, if you want to know more, you can visit our home page or contact us.
