Thus, not all receptacle outlets may be available, and when a new appliance is connected to a branch circuit, other appliances may have to be disconnected or an additional power strip, employing a different line conductor may have to be used. In facilities, such as retail display counters, laboratories, classrooms, hospitals or other environments in which repeated or rapid changeovers are necessary, there may not be enough outlets to service all of the devices at that location, even though some branch circuits might be underutilized.
For conventional installations it is necessary to reconfigure the branches at the service entrance or rewire a facility. This operation requires a trained service technician or electrical or wiring consultant who may not be readily available.
For instance, in a retail outlet demonstration display area electrical appliances or electronic devices must be connected to existing branch circuits via a wiring device or power strip located in a specific area.
When the display area is reconfigured it is often necessary for an electrician to rewire the display area. Often the electrician is not familiar with the layout of the wiring of the facility or that layout is not adequately documented.
Even though the branch circuits are identified at the service entrance or circuit protection panel, the physical location of these branch circuits and the outlets or power strips attached thereto may not be easily ascertainable because of previous relocation of display areas. Similar problems can exist in other facilities, such as laboratories or other facilities in which numerous electrical and electronic devices are repeatedly rearranged.
This system is used in modular office systems and in raised floor systems. Electrical power in those systems is distributed through sheathed cables to junction blocks that are mounted in modular wall panel raceways of the type commonly used in cubicle walls. The cable assemblies are available as eight wire systems with four line conductors and five wire systems with three line conductors.
The junction blocks can be mounted in raceways in the base of the modular walls by brackets. Connectors on the sheathed cable assemblies are mated to the ends of these junction blocks.
Duplex receptacle outlets can be mated with the junction blocks on opposite faces so that equipment can be plugged into the duplex receptacles on both sides of the wall panel. After the duplex receptacle outlets have been mated to the junction boxes, raceway covers are mounted in front of the duplex receptacle modules. These covers have openings to allow access to the duplex receptacle sockets, but the duplex receptacle outlets must be mated to the junction boxes before the covers are installed.
Versions of the duplex receptacles can be connected to any one of the line conductors in the cable assemblies so that a duplex receptacle can be connected to a predetermined branch circuit. The individual components of this modular power distribution system include many features, such as multiple wires in cable assemblies and receptacle sites on opposite sides so that the components can be assembled in a wide variety of configurations to meet the need of a specific work space.
Modular power distribution systems of this type are also suitable for use in raised access floor systems and on power poles. Thus when modular wall panels are moved or when access floor outlets are physically rearranged, the cable assemblies can also be physically moved because they are not permanently fixed to the building structure. Although the components of this prior art modular power distribution system can be physically rearranged, the electrical configuration or layout of the branch circuits are not changed as part of this physical reconfiguration.
The breaker panel or circuit protection device layout is originally configured by a trained consultant or electrician. The branch circuit configuration defined at the circuit protection device remains the same, even though the physical position of the outlets attached to the modular wall panels or access floor stations may change.
To electrically reconfigure modular power distribution systems of this type a trained consultant or electrician would normally reconfigure the branch circuits at the circuit protection device. Commercially available modular electrical power distribution systems of this type are flexible and facilitate rearrangement of office space, computer facilities, light manufacturing sites and similar commercial and industrial space.
However, conventional installations do not address situations in which the types and numbers of electrical appliances or electronic devices that are attached to the branch circuits are frequently changed. For instance in a retail facility, display areas and the demonstration appliances connected in any one area, are changed so frequently that it is not practical to change either the physical arrangement of the major wiring components or the branch circuit layout each time a retail display is modified.
When more electrical appliances are attached to a branch circuit available in a retail display, the branch circuit may be overloaded or transients and spikes may be occur that could adversely affect the performance of other electronic components attached to that branch. Thus the branch circuits available in a particular location may limit the configuration of appliances that can be displayed in a given retail display area.
Sales or maintenance personnel who typically reconfigure the display area typically do not have proper qualifications to reconfigure the electrical layout to meet new, and perhaps transient, requirements, and it is not practical to employ electricians to continuously make such changes. Similar problems can arise in laboratories, light manufacturing workspaces and in other facilities where frequent changeovers are common.
The instant invention provides added flexibility in situations requiring rapid changeover of the branch circuits available at a specific site. With this invention, personnel, other than electricians or trained wiring consultants, can reconfigure branch circuits available at a particular location by simply substituting a receptacle outlet connectable to a different branch circuit.
Different versions of receptacle outlets are available so that an installed receptacle outlet connected to an excessively loaded branch circuit can be replaced by a different receptacle outlet that is attachable to a different line conductor. If the new branch is also overloaded, a third receptacle outlet attached to a third line conductor, and therefore a third branch circuit, can be installed.
Thus the flexibility of an existing wiring layout can be greatly enhanced. Thus according to one aspect of this invention, a load balancing power strip for distributing electrical power includes a plurality of separate line conductors. A plurality of tap sockets are located on the power strip. A plurality of receptacles, such as duplex receptacle outlets, are matable with the tap sockets. Each tap socket includes a plurality of line contacts, each separate line contact being commoned to one of the line conductors.
Each receptacle includes a terminal matable with one of the line contacts. Receptacles having terminals in different positions are attachable to each tap socket so that, at each tap socket, a receptacle can be connected to any one of the line conductors.
The receptacles at each tap socket are replaceable to balance loads on the separate line conductors in the power strip. According to another aspect, a wiring device, such as a power strip, for distributing electrical power at multiple receptacle outlets includes a tap socket assembly including a plurality of individual tap sockets. An enclosure assembly with multiple openings houses the tap socket assembly that is mounted in the enclosure assembly with individual tap sockets aligned with individual openings in the enclosure assembly.
Receptacle outlets are connectable to the individual tap sockets. The receptacle outlets extend through the individual openings by a distance sufficient to permit insertion and removal through the individual openings to permit connection to and disconnection from the corresponding tap sockets.
An electrical wiring assembly of this type would be suitable for use in a retail display panel to balance loads on branch circuits providing electrical power to sample electrical components on display in a retail establishment.
This electrical wiring assembly would include a tap socket assembly including bus bars for carrying electrical current. The bus bars would be located in a tap socket housing. The tap socket assembly would include multiple tap sockets. Each tap socket would have electrical contacts on the bus bars aligned with apertures in the tap socket housing. Each electrical wiring assembly also includes an end connector on at least one end.
A cable assembly including multiple wires and a connector could be attached to the end connector. The cable assembly would connect the bus bars and the wires to an electrical service panel to form multiple branch circuits accessible in the tap socket assembly.
A hanger assembly could be attached to the tap socket assembly. The tap socket assembly would be mounted on the retail display panel by the hanger assembly. The hanger assembly also would have openings aligned with the tap sockets on the tap socket assembly to provide access to the tap sockets. Receptacle outlets of at least a first type and a second type would also be used. The first type of receptacle outlet could be attached to a first bus bar at one or more of the tap sockets and the second type of receptacle outlet could be attached to a second bus bar at one or more of the remaining tap sockets.
The first and second types of receptacle outlets are interchangeable and replaceable so that loads on the first and second bus bars can be balanced by substituting one type of receptacle outlet for another type of receptacle outlet. The hanger assembly openings provide access through which the receptacle outlets can be inserted and removed so that loads on different branch circuits can be balanced by changing the type of receptacle outlet in the retail display area without rewiring the branch circuits at the electrical service panel.
The load balancing power strip or power module [] 2 shown in FIGS. The load balancing power strip 2 includes four duplex receptacles or receptacle outlets 40 that can be individually connected to a tap socket subassembly 20 , shown in more detail in FIGS. The power strip 2 also includes an enclosure member or bracket 70 , shown in more detail in FIGS. The tap socket subassembly 20 is mounted in the enclosure 70 , and the duplex receptacles 40 can be inserted into engagement with the tap socket subassembly 20 , or removed therefrom, through openings 76 on the front or exposed face 72 of the enclosure member The load balancing power strip 2 also comprises a part of an assembly that includes a power cable 80 that is used to connect the load balancing power strip 2 , either directly or indirectly to a service entrance panel or circuit protection power source, such as distribution panels sold by Square D and others.
The load balancing power strip [] 2 can be provided in various versions, including for example a five wire version or an eight wire version. About Jignesh. Parmar B. Tech Power System Control , B. E Electrical. Membership No:M He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. Hi Gignesh hbhai.. I have a 3rw soft starter rated of kw and running with kw motor ,stirer load, agitator.
The soft starter trips frequently. For this range of motor the starting currents will be as high as 6 times its full load current. I suggest you use at least KW starter. We need to provide the starter with minimum times the load of motor. Hello Sir…I would like to know the soft starter failure…Motor is rated current of and the 3rw soft starter of kw under the stirrer load Agitator. The current of soft starter is playing around Amp continually because of agitation. I am loosing soft starter frequently.
The power is stable, Balance current each phase , no power fluctuation. Would you guide me in this regards? Dear sir, As you are mentioning the de-rating table or any reference table. In which standard these tables are mentioned? Can you please give reference for these standard? Ammeter on all 3 legs of volt system. Current should read zero. Our Prime Power generator is tripping when neutral is connected with ground. Could you please provide the possible causes of its.
Thank you. What is the effect of voltage unbalanced in transformer operations? Effect on Transformer life expectancy? You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account.
Then additional power is required to increases generation or increases KVA rating of the transformer. It have thirty two 32 general purpose digital integrator, reference circuitry, and all the signal working registers. All the thirty two 32 processing required to perform active, reactive, and registers are directly connected to the apparent power measurement and RMS calculations.
Arithmetic Logic Unit ALU and allowing two The ADE is suitable to measure active, independent registers to be accessed in a single reactive, and apparent power in different 3-phase instruction executed in one clock cycle.
It provide the static operation while executing. The ADE provides 3. It has the high thermal cycling performance. Regulator is used to get fixed voltage output and 4. Output current range 1.
The internal current limiting and thermal shut down The device work for three phases v 50 Hz features of these regulators essentially make them Ac supply. If the load on one phase increases than immune to overload. Monitoring system use to measure the 3. In the monitoring system we use 1. This monitoring IC which measures the electrical component and collects the raw data i.
It is the low powered 8 bit microcontroller. Thus it compare the standard or reference values provided for the desired result.
Control unit compare both given data and :-Shrikant Dhanaji Biradar reference data and send the flag to controller to :-Sanjay Ghodawat Institutions, determine whether the system is balance or imbalance. Atigre, Kolhapur When the flag receive the negative a command put on :-Student software i.
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