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        Screw type Aluminum electrolytic capacitor

        Writer:sunny yangSource:capsun Number of visits: Date:2012-12-12 10:11

        Aluminum electrolytic capacitors ('capacitors') may cause explosion, fire, or other serious hazard if used outside the specified
        operating conditions. Please familiarize yourself with the instructions below before using these capacitors
        A, Installation Screw-terminal type capacitors
        1,When the capacitor must be installed on its side, the anode terminal side must face upward. If the anode terminal is located below the cathode terminal, internal corrosion may occur during long-term use
        2,The pressure valve (cap face) should not face downward. Electrolytic solution and compounds (element fixing agents) could leak from the valve
        3, recommended tightening torque and permissible terminal current (maximum current a terminal can withstand) for each terminal screw are listed
        below. Consult us if you wish to use a capacitor on a machine that vibrates significantly


        Recommended torque (permissible level) [N.m]

        Permissible terminal current [A]










        4,The terminal screws (M5 standard underhead: 10mm, M6 standard underhead: 12mm) in the separate package are designed for wire thickness not exceeding 2mm. Add to the screw length for wires more than 2mm thick. Heat generated due to a small screw clamping area could cause a failure.
        5,If a screw is loose or angled, that portion generates heat, with a danger of fire or other serious failure. Check that the screw is inserted on the perpendicular and securely tightened
        6,We recommend a bar hole diameter of 6mm for M5 terminals. An excessively large hole diameter may result in poor contact between the terminal surface and the bar, causing local heat buildup, with a danger of fire or other major failure
        7,Do not apply physical stress (tightening with fixtures, etc.) to the curled portion (seal contacting the case and cap). Any such practice may cause a liquid leak or sleeve breakage
        B,Operating environment
        1,Water, saltwater, oil or other electrically conductive liquid on a capacitor, or using a capacitor when it is damp with dew may cause a failure. Oil on the rubber seal or safety vent may cause a decline in airtightness. Do not use any capacitor in contact with liquid. Do not use capacitors that have been immersed in rainwater or other contaminated water
        2,Do not use or leave a capacitor in areas where there is halide compound gas such as hydrogen sulfide, nitrous acid, sulfurous acid, chlorine and bromine, or ammonia or other hazardous gas. The ingress of any of these gases into a capacitor may corrode it.
        3,Do not use or leave a capacitor in an area exposed to ozone, ultraviolet light, or radiation
        4,Powders (dust, etc.) that settle between terminals can absorb moisture and cause corrosion and tracking of the terminal. When there is conspicuous dust between terminals, stop the current, allow the capacitor to discharge, and wipe the terminals with paper or a towel lightly dampened with water or ethanol. Do not use cleaning agents or other chemicals
        5,Do not use a capacitor in an area subject to excessive vibration or impact
        1,Store all capacitors indoors at a temperature of 5-35°Cand relative humidity of not more than 75%RH (25°C), away from direct sunlight. The maximum shelf life of capacitors is three years. All capacitors which have been on the shelf for more than three years have an excessively high leakage current. Treat them with appropriate voltage before use. Any capacitor stored for more than 5 years should be replaced. The maximum shelf life of capacitors for photo flash use is one year, and two years for snap mount capacitors using leadless soldered terminals, beyond which solderability deteriorates.
        2,Store capacitors under the same operating conditions as mentioned above, with the exception of temperature and humidity
        3,Store capacitors in their original packaging whenever possible
        4,Even after discharged, capacitors may hold an electrical charge due to re-striking. Do not touch the terminals with bare hands. Touching the terminals could cause an electric shock. Discharge all capacitors with a resistor (approx. 1kW ) or a discharge plate before use
        D,Test run
        1,Do not touch the terminals of a capacitor with bare hands. Touching the terminals could cause an electric shock
        2,Do not short-circuit a capacitor between its terminals with an electrically conductive material
        3,Do not apply any acid, alkaline, or other electrically conductive solution to a capacitor
        4,Check the "Design Operating Conditions" for the operating conditions for capacitors
        E, Maintenance and servicing
        1,Conduct periodic checkups on capacitors for industrial equipment, following these checkpoints:
        (1) Appearance: Condition of the safety vent (open, notably swollen), liquid leaks or other considerable abnormality
        (2) Electrical performance: Capacity, tangent of loss angle, leakage current, and other items specified in the delivery specifications. The standard temperature for measuring electrical performance is 20°C. Leave the capacitor at 20°C and wait for the inside of the capacitor to reach the specified temperature before taking measurements. Consult us on whether to use such a capacitor. Before each periodic checkup, turn off the equipment and completely discharge the capacitor
        2,Replace all capacitors whose service life has reached its end. When replacing one capacitor, always replace all of them. Mixing old and new capacitors may cause an imbalance in the ripple current or voltage sharing, risking failures such as activation of the safety vent or short circuit.
        1,If gas is detected while a product is in use, turn off the main power supply or unplug it.
        2,When the safety vent of a capacitor is activated, a hot gas exceeding 100°C will escape. Do not place your face in close proximity to the vent and avoid proximity to areas exposed to the gas.
        3,Should the gas jet get in your eyes, wash them immediately with clean water. If you inhale the gas, gargle immediately. The gas is composed of a gaseous form of hydrogen or organic solvents
        4,Should the electrolyte come in contact with your skin, wash with soap and water. Never put it into your mouth
        G,For scrapping
        1,Scrapped capacitors are classified as scrapped metal. For burial they are handled as controllable industrial waste because of the nature of the contents (electrolyte). Commission an industrial waste disposal specialist for their disposal. Ensure that no waste products enter the market
        2.1 Most of the material is aluminum and cannot be completely burned. In incineration, take the following into consideration
        2.2- Burning the capacitors in an airtight state may cause an explosion. Before incinerating, either pierce the exterior or break them open. Be sure to wear protective clothing during this operation, since electrolyte or gas will jet out if the inner pressure of the capacitor is high
        2.3- Because of the exterior material (polyvinyl chloride), low-temperature incineration may emit hazardous gases. Burn the
        material at high temperatures (800°C or above). Incineration requires separation of the exterior materials
        3. Do not attempt to crush the capacitors, as this may cause electric shock or injury
        1,For details, see the Guidelines on the Operation of Fixed Aluminum Electrolytic Capacitors for Electronic Equipment EIAJ RCR-2367B March, 2002 issue.
        2,To preserve the global environment, we are expediting the substitution of chemical substances that negatively impact the
        environment. We ask your cooperation in our initiative to reduce substances with environmental impact. We also ask you to
        avoid using ozone-layer destroying substances to clean capacitors.
        3,To control insects during export, fumigation may be done using halide compounds such as methyl bromide. Direct fumigation of capacitors or equipment incorporating capacitors or use of fumigated timber as a pallet may cause corrosion inside a capacitor, resulting in failure. Even when covered in plastic, chemicals may penetrate through small gaps. Likewise, do not apply insecticides directly on or near the capacitors
        4,When using a sterilizer against SARS and other infectious diseases, do not spray it directly on or close to capacitors and
        equipment incorporating capacitors. Some sterilizers contain a high concentration of halide compounds. The sterilizer spray may accelerate internal corrosion, resulting in failure. Avoid using capacitors or equipment incorporating capacitors onto which a chemical has been sprayed. Instead, replace them with new ones
        5,Consult us for further information

        TypeInfo: Industry information

        Keywords for the information:capacitance  decreasing temperature  the viscosity of the electrolyte 

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