what is the difference between load and auxiliary contacts?
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Auxiliary contacts are small and are intended to be used as part of the control circuit. Load contacts are large and designed to control a large amount of current.
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PLC and motor control application 1), and normally closed overload relay contacts (part of the motor starter) are connected to the third input (I0. 2). These inputs are used to control normally open contacts in a line of ladder logic programmed into the PLC.
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['Close Circuit. When load works on its own in a circuit then it is called Close Circuit or Closed Circuit. ... ', 'Open Circuit. When there is a faulty electrical wire or electronic component in a circuit or the switch is OFF, then it is called Open Circuit. ... ', 'Short Circuit. ... ', 'Series Circuit. ... ', 'Parallel Circuit.']
64104
Line is always hot. Load is the wire going from the switch to the device. Load will only be hot if the switch is closed. ... the line is the set of wires ( Hot and Neutral ) coming from the Breaker panel, the Load is the set of wires that feed all the outlets (if any) that are protected by that GFIC.
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As nouns the difference between load and shipment is that load is a burden; a weight to be carried while shipment is a load of goods that is transported by any method (not just by ship).
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A Motor Starter is a basically a contactor with the addition of an overload relay which will drop out the coil voltage in case of motor overload condition. A Contactor is an electrically control switch same as a relay. It is used for switching the current to ON and OFF a circuit.
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A safety switch (also known as a “disconnect switch,” or “load break switch”) serves multiple purposes, but its primary functions are to function as a disconnect means for a service entrance and a disconnect means and fault protection for motors (heavy machinery).
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Variable torque loads are loads that startup under no load. Typically these are fans and clean water (centrifugal) pumps. Constant torque loads are those that startup under a load. Typically these are positive displacement pumps, conveyors and general machining applications.
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Also lighting contactors are not always "latching" types. General use contactors are rated for typical inrush currents of 6 times full load, lighting contacts are often designed as high as 12 times. The lighting inrush also tends to last longer than general inrush currents.
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The feed is the cable from your fuse board, supplying the power to the isolator switch. The load is the cable supplying the appliance once you have switched the isolator into the on position.
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My take on the difference is that a dividing head's subject to loads when locked (e.g. cutting gears, marking dials, milling hex heads) whereas a rotary table can take loads *unlocked*, for instance when cutting a curved slot in a milling machine, rounding the end of a bar or link - the rotary needs to have less ...
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The size of your load can also play a role in which type of transmission is more favorable. Usually, vehicles with automatic transmissions will have a greater allowable cargo load than those with manual transmissions. This is because towing large loads with a manual can damage the clutch from shifting gears.
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With the first device, the line is the wire running from the service panel to the device, and the load is the wire running from the first device to the second device downstream on the circuit. ... The load side is where the power leaves the device (or electrical box) and travels down the circuit.
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The auxiliary contact is often used in a relay logic circuit, or for some other part of the motor control scheme, typically switching 120 Volt AC power instead of the motor voltage. One contactor may have several auxiliary contacts, either normally-open or normally-closed if required.
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Installation contactors and auxiliary relays are designed to switch more power (load) than the capacitance of the switching component. They are also used for so-called multiplication of contacts where more than one contact is needed. The auxiliary relays have quiet operation, LED signalling and switching contacts.
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1 Answer. As you've surmised, a "loaded" patch panel is loaded: Connectors are pre-installed (usually all one family of connectors: e.g. the whole panel is going to be RJ45 cat6), while an unloaded patch panel is - well - not. Typically unloaded panels have empty holes (or knockouts) where connectors would go.
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Auxiliary power is electric power that is provided by an alternate source and that serves as backup for the primary power source at the station main bus or prescribed sub-bus. ... A Class A power source is a primary power source, i.e., a source that assures an essentially continuous supply of power.