In , Joseph O. Eaton , brother-in-law Henning O. Taube and Viggo V. Torbensen, incorporated the Torbensen Gear and Axle Co. With financial backing from Torbensen's mother, the company was set to manufacture Torbensen's patented internal-gear truck axle.
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Embed Size px x x x x General Description. Section 26 35 Capacitor SelectionThere are two basic types of capacitor installations: individual capacitors on linear or sinusoidal loads, and banks of xed or automatically switched capacitors at the feeder or substation. Improved motor performance due to more efcient power utilization and reduced voltage drops. Motors and capacitors can be easily relocated together.
Easier to select the right capacitor for the load. Reduced line losses. Increased system capacity. Load CapacityIf feeders or transformers are overloaded, or to add additional load to already loaded lines, correction must be applied at the load. If a facility has surplus amperage, capacitor banks can be installed at main feeders.
If load varies a great deal, automatic switching is probably the answer. Advantages of bank installations at the feeder or substation: Lower cost per kvar. Total plant power factor improved reduces or eliminates all forms of kvar charges.
Automatic switching ensures exact amount of power factor correction, eliminates overcapacitance and resulting overvoltages. Utility BillingThe severity of the local electric utility tariff for power factor will affect payback and ROI. In many areas, an optimally designed power factor correction system will pay for itself in less than two years. Complete control. Capacitors cannot cause problems on the line during light load conditions.
No need for separate switching. Motor always operates with capacitor. Discharge Resistors: Capacitors rated at volts and less must reduce the charge to less than 50 volts within 1 minute of de-energization. Capacitors rated above volts must reduce the charge within 5 minutes. Dielectric Strength Test: Twice the rated ac voltage or a dc voltage 4. Overcurrent Protection: Fusing between 1. Does not preclude NEC requirement for overcurrent protection in all three ungrounded conductors.
Note: When capacitor is connected to the load side of the motor overcurrent protection, fused disconnects or breaker protection is not required. Fuses are recommended for all other indoor applications. Table Selection CriteriaThe selection of the type of capacitor installation will depend on advantages and disadvantages of each type and several plant variables, including load type, load size, load constancy, load capacity, motor starting methods and manner of utility billing.
Load SizeFacilities with large loads benet from a combination of individual load, group load and banks of xed and automatically-switched capacitor units. A small facility, on the other hand, may require only one capacitor at the control board. Sometimes, only an isolated trouble spot requires power factor correction in applications such as welding machines, induction heaters or dc drives.
If a particular feeder serving a low power factor load is corrected, it may raise overall plant power factor enough that additional capacitors are unnecessary. Load TypeIf a facility has many large motors, 50 hp and above, it is usually economical to install one capacitor per motor and switch the capacitor and motor together. Often, the best solution for plants with large and small motors is to use both types of capacitor installations.
Load ConstancyIf a facility operates around-the-clock and has a constant load demand, xed capacitors offer the greatest economy. If load is determined by eight-hour shifts ve days a week, utilize switched units to decrease capacitance during times of reduced load.
Capacitor Switching DevicesMedium Voltage Capacitor SwitchingCapacitance switching constitutes severe operating duty for a circuit breaker. At the time the breaker opens at near cu. CH Capacitor Download Report. View Download 2 Category Documents. Tags: output relays disabled healing metallized polypropylene terminal stud assemblies target power factor coded modular bundles exceeds nec requirements lift bolts standard modular tray design.
Individual vs. Banked InstallationsAdvantages of individual capacitors at the load: Improved motor performance due to more efcient power utilization and reduced voltage drops. For more information visit: www. Capacitor Bank B. Cubicle Capacitor Bank Documents. Capacitor Applications Documents. Modular Capacitor Documents. Ultra Capacitor Documents. Capacitor datasheet Documents.
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CH Parts List - Page Three
Embed Size px x x x x General Description. Section 26 35 Capacitor SelectionThere are two basic types of capacitor installations: individual capacitors on linear or sinusoidal loads, and banks of xed or automatically switched capacitors at the feeder or substation. Improved motor performance due to more efcient power utilization and reduced voltage drops.
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