Manual LSPS (ENG)

User’s manual

LS Power Solution Ver. 1.0

1. Starting LSPS and Menu Double click on the icon of LSPS, then LSPS will start up its own window. You can see the following log

screen.

When the log screen disappeared, following starting screen appeared as follows.

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Each part of Initial Screen is as follows.

1) Pull down Menu

Pull down menu includes, as above picture, File, Edit, View, Project, Option and Help Button. And most

of them exist in tool bar menu. Each menu has its items as follow.

File Menu

Content of file menu is similar to ordinary windows program. It has commands of New file, Open,

Save(as Save) and Print.

Edit Menu

Edit menu is same as ordinary windows program. It contains Undo, redo, cut, copy, paste and erase.

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View Menu

View Menu has options as view/hide, etc

Project Menu

Project menu has Step-by-step executive commands, of which program conducts four steps technical

calculation. First step is to input system topology and select/input the necessary data. Second step is to

perform SC calculation. Third step is to carry out CB automatic selection. Last step is to review protective

coordination.

Option Menu

Option menu has additional commands. Detail commands are as follows.

• Master file editor :

It is a command to define defaults of power system and could make it possible to set KVA, Hz and fault

resistance(Ω). Each initial default is as follow. Default KVA is 100,000kVA(=100MVA), default

frequency is 60Hz, default fault resistance is 0Ω.

• Grid size control:

Default unit of this software is Grid, which means 1 plaid on the drawing screen. It contains 70 X 70

boxes. If it needs to input more bigger drawing size, grid size can be controlled easily.

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• DB Management: This software provides default database, users can add, delete and change data as

user’s need.

• Characteristic value indication: it’s a command which could view and hide specific value indication

located in each component icon on the right side of the drawing screen.

-Help Menu

Help Menu consists of list and menu of LS Power Solution information. If you select it, you may open

user’s manual.

2) Basic command toolbar

This is the collection of the basic command icon, which is used in the other windows program. It consists

of file and edit icon same as pull down menu.

3) System Component Icon Toolbar

It is icon collection to draw the system topology on the drawing screen. Detail instruction will continue as

follow.

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4) Execution button toolbar

It is command about core function, of which menu is same as project pull down menu. Detail

instruction will continue as follow.

5) Zoom In/Out, Status Indicator

It is command to expand/reduce its drawing screen and indicate current status.

6) Option Command Toolbar

It is a toolbar about Report, T-C Curve View, Master file and DB Control, etc.

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7) Navigator View

This is a picture showing Total drawing screen, to which system topology is applied. It could make users

move to specific spot quickly. Left picture is an initial screen, right is with system topology.

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8) Component Tree Bar

This function is to show that each component is divided into same classes. On this screen, if double-click

relevant component, you could open input box and edit it.

9) Drawing screen

It is a latticed type to draw the system topology with system component icon. Reversed box on the screen

is pointed with mouse. In this status, when system component icon is selected, new icon is located on the

reversed box.

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10) Undo/Redo Command toolbar

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2. Network Topology Drawing After LS Power Solution is finished, you can draw a sample drawing in grid screen. If you click the

power system components (circuit breaker, 3P/1P cable, transformer, utility bus, load) of toolbar above

the program, the selected component appears the drawing grid.

• Before Drawing

The method of the drawing of power system component is as following figure. If you select a utility bus

component of toolbar menu, the selected component is created on the selected grid. The created

component appears the navigator and tree bar.

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• After Drawing

1) Component size change

The components that can size change are busbar and 3P/1P cable.

Size change of straight line busbar

• Before size change

It you click the component(busbar, B1) for the size change, you can see the dotted line box. The edged

squared point of the selected component display the pointer of size adjustable. If you click the edged

squared point, the arrow line on the squared point appears.

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• Size changing

If you drag the mouse where want the size change, the rectangular box of dotted line appears.

• After size change

Size change of busbar


If you select from component to control size to a mouse, quadrilateral territory of dotted line is seen. Also,

quadrilateral that occurs on end of relevant component means pointer which size control is available. If

you click a mouse in this point, both arrow appears on point with picture below.

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• Size change(length)

It is an area indication of dotted line if you move a mouse to the position that you can can change size.

• After size change(length)

If you don’t select the mouse click after control area to suitable size, amendment of size is ended.

• Size change(width)

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• After size change (width)

Size change of straight line cable


• Size change

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• After size change

2) Move of component

Move of single component

• Before component move

Select the component that you want to move by a mouse.

•Component moving

Move the selected component to a position that you want to move finally. An area of dotted line is

indicated to the area that a mouse moves.

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• After component move

If you don’t select the mouse click finally, movement of a component is ended.

3) Component deleting

• Before component delete

Select a component to delete, and an area of selected component is indicated.

• Component deleting

There are two methods of component delete. One is the erasure using "Delete" or "Cut" command

through mouse right click and the other is a method that erase using "Delete" key in keyboard. Following

picture is occasion to press mouse right button and select "Delete".

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• After component delete

4) Component copy/paste

• Before component copy

Select a component to copy. Area of selected component is indicated.

• Component copying

There are two methods of component copy. One is the copy using "Copy" command through mouse right

click and the other is a method that copy using "Ctrl+C" key in keyboard. Following picture is a case to

press mouse right button and select "Copy".

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• Component paste

• After component paste

5) Component group select/move/copy/paste

• Component group select

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• Component group moving

• After component group move

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• Component group copying

• Component group paste

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• After component group paste

6) Component connection

Method 1

• Before component connection

• After component connection

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Method 2



Method 3


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• Component connection


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3. Components Data Input/Set The data input/setting method of each component in LS Power Solution is explained using the following

example system.

After composing the example system in drawing screen each component data as follows input For data

input, user can use database or input directly and component of example system inputs directly. If data

entry is ended, a component name and main information are updated on the component left and right side

of drawing window, respectively.

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1) Component input window open

The method of input window open can be divided into two groups. One is a mouse double clicking and

the other is the execution of "Registration information" using the mouse's right button.

• Use the component double click

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• Executing the registration information

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2) Master file setting

Before starting simulation, the master file's information (base capacity, base frequency and fault

resistance) should do it first. This should confirm because it is a part that can not be fertilized if falling in

short circuit calculation step once. In the case of base capacity, by 100,000 kVA (100 MVA) it was

established and user can change the setting values according to target system. In the case of base

frequency, it was established by 60Hz and selects the 50 or 60Hz according to target system. In case of

fault resistance, the default value is 0ohm and the random value is selected by user.

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2) Data input/set of utility bus(P1)

Basic input of utility bus consists of four 4 items; name, system voltage, 3phase short circuit capacity

and X/R(+)(positive sequence X (reactance) and R (resistance) ratio).

• At the moment you know information that is added much except 3phase short circuit capacity

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• Occasion that you know % impedance value

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3) Data input/set of generator(G1)

Basis input items of generator is name, system voltage (it must input system voltage because it is part that

create voltage of system in case of generator), generator capacity (kVA), and impedance data.

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• In case of nameplate and system voltage are different

It can be nameplate and system voltage of generator that are different and impedance conversion value

changes in this case.

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• In case of input negative and zero sequence impedance value

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• Occasion that you select generator from DB

This software supplies various generator data. When user does not know input data, user can choose value

from generator DB. Data supplied in software is offering general value by each capacity and cannot read

this value coincides with generator data of system.

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4) Scenario simulation function of generator

In this software, user can use the scenario simulation function at generator and breaker. There is radio

button that can choose operation/stop on upside screen of generator and default value is operation. If it is

use scenario function, user is in advantage that can consult together various system states using identical

file.

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5) Data input/set of transformer(T1)

In the case of transformer, setting methods of the input data can be divided into two groups. One is when

select transformer in transformer DB and another is when user inputs directly. Input item of transformer is

a name, transformer capacity(KVA), transformer connection type, the secondary system voltage, %

impedance etc.. and so on.

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• User inputs necessary value on his own

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• Occasion that nameplate voltage differs from system voltage

In the case of single phase transformer, you should decide to omit because it is equal with three-phase

transformer except there is no selection of connection type.

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6) Data input/set of low voltage circuit breaker(B1)

As you see in picture, input item of circuit breaker is a name, rated current(A) and the rate of margin.

Also, selection item is protection target, number of poles, kind of circuit breaker and Icu or Ics.

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• Protection target's alteration

Protection target exist line protection, motor protection and instantaneous protection and user chooses

according to the protection target of circuit breaker. Default value was selected by line protection.

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• Change of margin

Rate of margin is considered as the circuit breaker when choosed automatic. Software may choose

breaker that has suitable capacity to 10kA' fault current if it was established rate of margin by 100% and

the fault current of circuit breaker location was calculated by 10 kA. The other side, software may choose

breaker of capacity that is suitable to 15 kA' fault current if established rate of margin increases by 150%.

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7) Scenario simulation function of circuit breaker

In this software, we will explain by scenario simulation function at generator and breaker. There is a radio

button that can choose close/open at left side middle of input screen of breaker and default value is close.

If user uses scenario function, he is in advantage that can consult together various system states using

identical file.

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8) Data input/set of 3phase cable(W1)

In the case of 3phase cable, setting methods of the input data can be divided into two groups. One is when

select cable in cable DB and another is when user inputs directly. User input is a name, line length, ohm

or % impedance and thermal capacity of cable.

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• Occasion that you select cable in DB

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• Occasion that you select % impedance per unit km

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9) Data input/set of electric motor(M1)

User input is a name, motor capacity (kW or kVA unit), % impedance data, efficiency, and power factor.

User selects combo button in case of system voltage, automatic allocation by software, differs with

nameplate voltage. Also, user can select the number of poles and grounding system.

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• In case of selecting electric motor in DB

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• In case of inputting negative and zero sequence impedance value

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10) Motor protection device (MC, MS, TOR or EMPR) selection

There is the part establishing a motor protection device(M/C, M/S, TOR and EMPR)

On the right of motor protection device establishment screen, the name of final selected devices is shown.

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4. Skeleton Checking

If you achieve short circuit calculation clicking executable practice toolbar's 2nd die icon, the skeleton

checking (error search) is achieved before short circuit calculation.

The skeleton search checks out the following errors.

1) Occasion that rated current of source-side CB is more than thermal capacity of load-side cable

-Solution: select the lower rating of CB or the higher thermal capacity of cable

2) Occasion that rated current of source-side CB is less than rated current of load-side motor

-Solution: select the higher rated CB or the lower rated motor

3) Occasion that necessary data is empty in short circuit calculation

-Solution: inputs or selects empty data

In the case of example system, send the following result of skeleton checking if you achieve short circuit

calculation.

There’s a method examining two errors. One is that user confirms the error information opening input

window and the other is that control dialog window directly in error information window. You must

choose with next picture If you want to open relevant component dialog window directly in error

information window.

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If you double click the selected state by a mouse, the dialog window of relevant component with next

picture open.

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If you calculate M1's rated current of load-side motor, the rated current of the motor becomes about 185A

because the voltage is 400V in 128.057kVA capacities. Therefore, the error message appears because

breaker CB4's rated current is smaller than the load-side motor.

If you raise CB4's rated current by 190A and achieve short circuit calculation again, you can see that the

number of error message is decreased.

Similarly, if you open relevant error message double clicking, breaker CB1's rated current is 400A and the

thermal capacity of cable W1 is 390A. Therefore, skeleton checking process informs user that the rated

current of circuit breaker is higher than the thermal capacity of load-side cable. Therefore, error message

doesn’t appear if it heightens the thermal capacity of load-side cable by 400A and achieves short circuit

calculation again. The short circuit calculation result will be displayed on drawing screen as following.

Also, cross stripes in drawing state disappears.

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Screen occurs following change on the whole if it finishes debugging through Skeleton checking and

achieves short circuit calculation.

If you open component input window in this state, there is following change. That is, the save button does

not permit any change that can affect in short circuit calculation.

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User must return in again Step 1 as following if he wants change of input data.

In this case, change of input data is permitted because save button as following is activated if reopen

component inputs window.

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Among all components, a circuit breaker is permitted to be changed after breakdown calculation. Like

following picture, the kind of circuit breaker can be changed after short circuit calculation.

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6. CB Automatic Selection

If you execute practice toolbar's 3rd die button, CB automatic choice is achieved. In the case of practice

toolbar, Step 1(system drawing) and Step 4(protection coordination decision) are activated if progress in

Step 3 and second-stage become inactivation.

If achieve CB automatic choice, screen will show following change.

If you open the dialog window of chosen breaker, following screen appears. It is an occasion opened CB1

of example system. CB1 established a kind of breaker by ACB before achieve breaker automatic choice

and rated current established by 400A. Also, a short circuit current is calculated by about 42 kA. Also, it

is considered as 42 kA in breaker automatic choice because the rate of margin is 100%. The breaker

names(internal red-lined box) of following picture are candidates of ACB that satisfy all conditions of

singularity and the “selection” means the nearest breaker among them.

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7. CB manual selection

The ways to change auto-selected CB manually are the same as follows.

Selection change using mouse

If users double click of mouse on one of the CB list and save it, the name of the CB located in the

drawing is updated as following picture.

The Way to change CB type

The second method is to change CB type manually. The next image shows the case to change CB1 from

ACB type to MCCB electronic type. The most adaptive CB of MCCB electronic type is chosen as

following picture and user can notice updated name of the new CB, saving the new CB.

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The Way to change Icu or Ics

The last manual method is to change Icu and Ics selection. It is for value of Icu and Ics different

according to CB type, but normally Ics is 25 ~100% of Icu. So, new CB list will be made as the

selection of the values.

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8. T-C Curve Viewer

It is possible to see T-C curve Viewer after finishing CB selection as it had been introduced already. T-C

curve viewer has operation on three components. (Circuit breaker, Transformer, Motor)

-T-C curve of CB consists of Max/Min two curves.

-T-C curve of Transformer consists of damage curve and inrush curve

-T-C curve of motor consists of characteristic curves such as motor starting and TR protective devices.

In order to execute T-C curve viewer, first of all, users select a component to see and then click “T-C

curve” button in the option command of toolbar or use right button of mouse.

For example, in case of selecting two CBs as follows

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Click right button of mouse

Or use toolbar menu

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Users can see the following display on T-C curve.

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Here, selecting combo button in the lower left-hand corner, a related T-C curve is displayed as follows.

Like above image, the red colored curve indicates a component selected by mouse and related rating and

value are displayed in the Tab setting. And also display of T-C curve is changeable according to the

variation of Tab setting value.

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Users should click its “Delete Curve” button to remove any T-C curve in the display window.

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If you want to add another T-C curve to the viewer, you may select a component and execute “Add T-C

curve” command by mouse right click during operation of T-C curve viewer.

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Users should select the check button in the same way to see an added curve.

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In order to print out the image of T-C curve, users click “T-C curve image” command button and then the

following viewer program to do printout jobs is shown.

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9. Protective Coordination

Protective coordination of low voltage system may be widely divided to two sections, Cascading type and

Discrimination type and they are summarized as follows.

- Cascading: A protective device in the lower side (or load side) cannot interrupt all of the fault current

within its self-protective area and the other device in the upper side may be operated concurrently or more

quickly. It means for the latter device to be in charge of the obligation of removing fault of the lower device. It has

advantage to protect power system economically but makes reliability of power system operation declined.

- Discrimination: A protective device in the lower side (or load side) can interrupt all of the fault current

within its self-protective area and the other device in the upper side may not be operated at that time. It has

very high reliability of power system operation but is too much of an expense.

After Completing in CB selection, protective coordination is proceeding by performing the forth dice

button in the toolbar as follows.

And then users have to choose one of two kinds of protective coordination, explained above. “C” in the

picture indicates Cascading and “D” indicates Discrimination. First, Discrimination type is selected as

follows.

Next, users should choose two CBs (example CB2, CB5) to see coordination by mouse click in condition

of “Shift” key on. After selecting CBs, pop-up menu is shown up after you press mouse right button.

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Selecting “protective coordination analysis”, the following message is displayed. Here, “Coordination is

validate.” means to make it coordinated based on the low voltage CB protective coordination standard of

LS industrial systems. And “Select the other CBs?” message asks users to replace one CB manually

among the coordination possible CB lists in the lower side without changing upper side CB.

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If users select “No”, message in the screen will disappear and upper/lower side CB will change its color

into red and blue color respectively. Otherwise, selecting “No” message in the screen will disappear and

CB component input window will open in the screen. The CB list shows arranged lower side CBs

possible to coordinate with the upper side CB. Thus, users can change CB selection in the same way as

CB manual selection.

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Protective coordination analysis on CB1 and CB2 appears in the screen as follows. “This combination is

not found in the authorized table.” means that there is no CB based on the low voltage CB protective

coordination standard of LS industrial systems and LS industrial systems can not assure protective

coordination on these CBs. In case of that, CB color will be changed into pink.

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Protective coordination analysis on CB3 and CB6 appears in the screen as follows. Here, “Coordination is

invalidate.” means that these two CBs are impossible to coordinate but there are CBs based on the low

voltage CB protective coordination standard of LS industrial systems. In other words, LS industrial

systems can assure that the CBs do not coordinate each other. And also, In case of that, CB color will be

changed into pink.

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10. REPORT

Users can see and print out the report after the fault calculation.

If a user clicks the “Report” button of toolbar in the above picture, the report manager is able to be

executed anytime after the fault calculation step as a following picture.

The report manager is divided into two parts as follows

- Project information: title, writer, company and abstract of the report, impedance display type (Per Unit

or %)

- Option setting of the fault calculation: bus selection, fault type(3-phase, line to line, line to ground,

Double line to ground), a, b, c(R, S, T) analysis, one-phase divergent branch, and branch current of

faulted bus (limit the number of buses to 10 for branch output)

Project information which users input will be displayed like the next picture.

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This image is to show “Add All” and “Remove All” functions of bus selection.

If a user clicks “Add All” Button, All buses will be displayed in the “Selected buses” list. And “Remove

All” button is using for removing all buses in the “Selected buses” list. The use of “Add” and “Remove”

functions is shown as below.

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Add command button is activated when you select any bus of “Selecting buses” list and a selected bus of

the list is shown up in “Selected buses” list after clicking Add button. Also, remove command button is

used for removing a selected bus of “Selected buses” list. Users can select options of the fault calculation

using check button of the report manager and the output of the fault calculation is displayed in the report

form as the following image.

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Users can convert the output of the fault calculation to the Excel file by “Convert To Excel” command

button in the upper-left corner of the report window shown above. The next image shows the excel file

converted from the output form of the S/W.

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In order to zoom in power system drawing, users execute the drawing print command in the upper-left

corner of the report window and the output of the command is displayed as follow.

Command buttons such as print, zoom in/out and page move are deployed in the upper-left corner of the

report window.

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11. DB management

This S/W is supporting DB management functions that users can add, edit and remove user defined data.

Components controlled by the DB management are generator, motor, line and transformer and users can

select DM management command in the option toolbar as follow.

Users also execute these functions using DB management button in each component input window.

The image as below shows each result of toolbar DB command case (left side) and component window

DB command case (right side).

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The execution of input button on the lower corner of the DB management window shows user data input

window as follow.

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If users input data and click “설정” button, the data will be added to DB and DB list of the window will

be updated.

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Arrow buttons in the right corner of the window are used to change data order and it is for convenient use

as raising data order that users use frequently. The way to arrange data order using arrow buttons is shown

as following picture.

Data Edit and Remove functions are performed by “수정” and “삭제” buttons respectively. The

following message box is shown in case of removing user defined data.

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If users select “yes” button, data will be removed as follow.

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12. Other Functions

1) Undo/Redo

-This S/W has Undo/Redo function (up to 10 times) and the function is executed regardless of file save.

2) Execution of component input window by tree bar

-As undergoing power system drawing job, all of the components on the drawing are added to tree bar.

In this case, the selected component input window is showed up by click or double click on any

component of tree bar.

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3) S/W Information

- Execution of “LS Power Solution information” command of pull-down help menu has the flowing

window displayed.

- Users can move to LS Industrial systems website (http://www.lsis.biz) and get technical data and

information on LSIS products.

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http://www.lsis.biz/

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Global Networks

Tokyo, JapanLS Industrial Systems Tokyo Office

Dalian, ChinaDalian LS Industrial Systems Co.,Ltd

Beijing, ChinaLS Industrial Systems Beijing Office

Qingdao, ChinaLS Industrial Systems Qingdao Office

Dubai, U.A.E.LS Industrial Systems Dubai Rep. Office

Chengdu, ChinaLS Industrial Systems Chengdu Office

Hanoi, VietnamLS-VINA Industrial Systems Co.,LtdLS Industrial Systems Hanoi Office

LS Industrial Systems Tokyo Office >> Tokyo, JapanAddress: 16F, Higashi-Kan, Akasaka Twin Towers 17-22, 2-chome, Akasaka,

Minato-ku Tokyo 107-8470, Japan

Tel: 81-3-3582-9128 Fax: 81-3-3582-0065 e-mail: [email protected]

LS Industrial Systems Dubai Rep. Office >> Dubai, U.A.E.Address: P.O.Box-114216, API World Tower, 303B, Sheikh Zayed road, Dubai, UAE.

Tel: 971-4-3328289 Fax: 971-4-3329444 e-mail: [email protected]

LS-VINA Industrial Systems Co., Ltd. >> Hanoi, VietnamAddress: LSIS VINA Congty che tao may dien Viet-Hung Dong Anh Hanoi, Vietnam


LS Industrial Systems Hanoi Office >> Hanoi, VietnamAddress: Room C21, 5Th Floor, Horison Hotel, 40 Cat Linh , Hanoi, Vietnam

Tel: 84-4-736-6270/1 Fax: 84-4-736-6269

Dalian LS Industrial Systems Co., Ltd. >> Dalian, ChinaAddress: No. 15 Liaohexi 3 Road, Economic and Technical Development zone,

Dalian, China


LS Industrial Systems (Wuxi) Co., Ltd. >> Wuxi, ChinaAddress: 102-A National High&New Tech Industrial Development Area, Wuxi, Jiangsu, China


LS Industrial System’s global network provides the highest quality of products and services

Wuxi, ChinaLS Industrial Systems (Wuxi) Co., Ltd.

Shanghai, ChinaLS Industrial Trading (Shanghai) Co., LtdLS Industrial Systems Shanghai Office

Guangzhou, ChinaLS Industrial Systems Guangzhou Office

Head Office (Seoul, Korea)

LS Industrial Systems International Trading (Shanghai) Co., Ltd. >> Shanghai, ChinaAddress: Room 1705-1707, 17th Floor Xinda Commercial Building No 322,

Xian Xia Road Shanghai, China


LS Industrial Systems Beijing Office >> Beijing, ChinaAddress: Room 602, North B/D EAS, 21 Xiao Yun Road, Dongsanhuan Beilu,

Chaoyang District Beijing 100027, China


LS Industrial Systems Guangzhou Office >> Guangzhou, ChinaAddress: Room 1403, 14F, New Poly Tower, 2 Zhongshan Liu Road, Guangzhou, China


LS Industrial Systems Chengdu Office >> Chengdu, ChinaAddress: Room 2907, Zhong Yin B/D, No. 35, RenminZhong(2)-Road, Chengdu, China


LS Industrial Systems Qingdao Office >> Qingdao, ChinaAddress: 7B40, Haixin Guangchang Shenye Building B, No. 9, Shandong Road Qingdao, China


Documents

Manual LSPS (ENG)