HVC Capacitor Film Capacitor Parameter Description Share

Capacitance is to measure the frequency at 1 kHz ± 20 Hz within a positive and negative deviation (if it is greater than 1 microfarad capacitance) Its test frequency is 120 Hz), and the measurement temperature is 25 oc ± 5 ° C. The standard deviation is ± 10%.


Dissipation Factor or TANσ is the ratio of capacitor ESR and its reactance. Measurement frequency at 1 kHz ± 20 Hz(If the test frequency is 120 Hz is greater than 1 microfarad, the measurement temperature is 25 oc ± 5 ° C,Not larger than the specified value.


Insulation resistance for rated capacitors above 0.25 to 0.5 microscopy, the change is dependent on the product (MΩ • μF) to minimum resistance value (MΩ) from the minimum resistance capacitor (MΩ). After two minutes at 100V DC voltage and 25 ± 5 ° C, the insulation resistance cannot be smaller than the RC product or the rated resistance value.


Rated voltage is the maximum continuous voltage in actual use of the maximum operating temperature in the actual use.


Dielectric strength is the maximum peak voltage that the capacitor can bear in the rated room temperature. It can be measured by applying a quotation voltage value specified by a voltage of 100 Ω for one minute. For example, to measure a DPM type capacitor, its rated voltage value is 250V DC, the dielectric strength is 175%, and the dielectric strength is required to be tested by 438 V DC.


Life Test: At the highest rated temperature ± 3 ° C, the voltage applied to the capacitor is applied to the voltage of 500 or 1,000 (+72, -2) hours. There must be no appearance without damage and the capacitance value changes no more than ± 5%. The insulation resistor does not fall to 50% of the initial limit. The loss of the loss does not exceed the initial limit.


Pulse capability is a peak current capability. This capacitor is determined by the integrity of the instantaneous current, which is represented by the DV / DT rated value, which is the maximum allowable voltage change rating (unit is V / μs). The peak rated current (AMPS) is equal to the product of the rated capacitor value (μF) and DV / DT rated value: Ipk = C(dV/dt) 


Printing marking by the number, capacitance value (μF), capacity deviation (%), producer, and rated voltage (DC and AC voltage). Small size capacitors can only have type, producer (HVC), capacitance (PF), and capacitance deviation code. For example: "DLMCD" and "682k" represent DLM models, 6800 pf (2 is 0), and 10% tolerance limit.


The code when using the deviation is as follows:

F = ± 1%
G = ± 2%
H = ± 6%
I = ± 3%
J = ± 5%
K = ±10%
M = ±20%