round double coils air conditional capacitor

round double coils air conditional capacitor System 1

round double coils air conditional capacitor

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Climatic category	Rate voltage	Testing voltage T-T	Testing voltage T-C	Capacitance tolerance	Dissipation factor
-25/+70/21 -40/+85/21	370/440VAC	1.75Un/5S (2Un/5S)	2000V.AC/5s	±5% (±10%)	≤0.002 (100Hz)

category

Rate voltage

Testing voltage

T-T

Testing voltage

T-C

Capacitance

tolerance

Dissipation

factor

-25/+70/21

-40/+85/21

370/440VAC

1.75Un/5S

(2Un/5S)

2000V.AC/5s

±5%

(±10%)

≤0.002

(100Hz)

Capacitance range:2MFD-100MFD,15+5MFD-80+7.5MFD

Dimension(mm):D: Φ40-Φ60,H:60-150

Reference standard:UL810,IEC252,EN60252,GB3667

Certification:UL Construction,UL 10,000AFC,TUV,VDE

Safety grade:P1,P2.

Q: Use capacitance to do transformer how to calculate: Although the current flowing through the capacitor has 70mA, but in the capacitor does not produce power, because if the capacitor is an ideal capacitor, the current flowing through the capacitor for the virtual part of the current, the work done by the reactive power.

Q: How to use the capacitor: The sum of the DC voltage and the ripple peak voltage shall not exceed the rated operating voltage;

Q: What kind of capacitance can be divided into?: Capacitors are often called capacitors. According to its structure can be divided into fixed capacitors, semi-variable capacitors, variable capacitors three.

Q: What is the principle of capacitance isolation?: The structure of the capacitor is two plates, separated by a layer of insulator, so under normal circumstances the capacitor is no current through (unless the middle of the insulation was breakdown).

Q: What is the difference between the power capacitor and the complement?: Wiring, three-phase complementary capacitor has three terminals, respectively (A, B, C) sub-capacitor has four terminals, respectively, then

Q: How to judge the capacitor is good or bad?: Due to the amplification of the composite transistor, the measured capacitance of the charge and discharge process to be amplified, so that the multimeter pointer increase the amplitude, so easy to observe. It should be noted that: in the test operation, especially in the measurement of small capacity capacitance, it is necessary to repeatedly change the measured capacitance of the pin contact A, B two points, in order to clearly see the multimeter pointer swing.

Q: Does anyone know the difference between the stray inductance of the capacitor and the parasitic inductance?: In the design of high-speed digital circuits, the parasitic inductance of the vias is often more harmful than the parasitic capacitance. Its parasitic series inductance will weaken the contribution of the bypass capacitor, reducing the filtering efficiency of the entire power system. We can use the following formula to simply calculate a parasitic inductance of a vias:

Q: Why does the circuit current gradually decrease when charging the capacitor?: For the ideal capacitor, when the capacitor is charged, as the voltage across the capacitor gradually increases, the charging current will gradually decrease until zero.

Q: Capacitance for AC and DC effects?: This current is also a sine wave, but with the resistance is different, although there is voltage current, but does not consume energy, called reactive power.

Q: What is the difference between polyester film capacitors and ceramic capacitors?: The frequency characteristics of the capacitor is better than the polyester, the capacitance and tgδ with the frequency of small changes can be used in low-voltage AC-DC circuit.

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