Table of Contents
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Table of Contents
Summary of Contents for Control Applications Elnet PFC
- Page 1 Elnet Power Factor Controller Rev. 1.4...
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Page 2: Table Of Contents
Table of Contents CHAPTER 1 – Electrical Wiring .........3 Electrical Connections..........3 Electrical Wiring Diagrams........5 Test Relays Screen............8 CHAPTER 2 – Power Factor Controller........10 General Information............10 Controller's Data Screen..........11 Voltage, Current, Hz............12 Power Factor, THD............12 CHAPTER 3 – Power Factor Controller Settings......14 Single \ Three Phase modes..........14 Transformers Ratio............15 Vital Settings..............17... -
Page 3: Chapter 1 - Electrical Wiring
CHAPTER 1 – Electrical Wiring 1.1. Electrical connections All Connections, except those to the CT core of the ElNet PFC Power Factor Controller are made via terminal connector plugs. Recommended max tightening torque for the connector screws is 0.5 Nm. - Page 4 Insert the lead from side “K” of the Current Transformers of Line 1 through the hole marked "I1" – "K" of the ElNet PFC Power Factor Controller. Repeat the procedure for Line 2 and Line 3 ("I2""I3"/"K"). Connect the rest of the connections to the ElNet PFC Power Factor Controller by means of terminal connector plugs.
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Page 5: Electrical Wiring Diagrams
1.2. Electrical Wiring Diagrams Notice! The distance between the external current transformer and the Elnet will not exceed 5m Attention! Maximum current for contactors R1 up to R6 is up to 3A Figure 1.1 – Three Phase Electrical wiring diagram... - Page 6 Notice! The distance between the external current transformer and the Elnet will not exceed 5m Figure 1.2 – Single Phase Electrical wiring diagram...
- Page 7 Pin Designation Description Remarks Use 6Amp fuse to Line 1 - Voltage Supply protect the line Use 6Amp fuse to Line 2 - Voltage Supply protect the line Line 3 - Voltage Supply Use 6Amp fuse to protect the line From external Current Note the correct Transformer on Line1...
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Page 8: Test Relays Screen
1.3. Test Relays Screen From the Main Menu scroll to Settings and press "Enter". Figure 1.4 – Access the Settings screen The ENTER CODE screen appears. Figure 1.5 – Enter Code screen The password to activate the Test Relay screen is 789. Use the buttons F3 &... - Page 9 The TEST RELAY screen will appear. Figure 1.6 – Test Relay screen Use the navigation buttons to force and release the relevant output. When finished hold the "Back" pushbutton until the main menu appears.
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Page 10: Chapter 2 - Power Factor Controller
CHAPTER 2 – Power Factor Controller 2.1 General Information. ElNet PFC Power Factor Controller enables measurement and display of voltage, current, frequency, power factor, THD current and THD voltage. Based on the above mentioned measurements ElNet PFC corrects the power factor by switching the capacitors. -
Page 11: Controller's Data Screen
Controller's Data Screen. Selection of "CONTROLLER'S DATA" from the main menu displays monthly and weekly average power factor (from the last power startup) and also real time power factor. In addition, at the bottom line you can see which capacitors are connected and which ones are disconnected. -
Page 12: Voltage, Current, Hz
2.3 Voltage, Current, Hz. Selection of "Voltage, Current, Hz" menu from the main menu will grand access to all the basic measuring of the device. Voltage, Current, Hz From the Main Menu scroll to the menu and press "Enter", the Voltage screen appears. Figure 2.3 –... - Page 13 Power Factor, THD From the Main Menu scroll to the menu, and press "Enter", the Power Factor screen appears. Figure 2.4 – Power Factor screen. Pressing on "F1" (THD-V),"F2" (THD-I) buttons allow to access the THD data screens. Figure 2.5 – THD screen.
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Page 14: Chapter 3 - Power Factor Controller Settings
CHAPTER 3 – Power Factor Controller Settings In order to set all values requested for proper operation of the Power factor controller, the following settings must be defined: Transformer Ratio, Vital Setting, Non Vital Setting & Working Range. 3.1 Single \ Three Phase modes. Setting the PFC to operate in single phase or three phase mode will effect only on the screen appearance the rest of the features and settings will remain to be the same as described... -
Page 15: Transformers Ratio
Use the buttons F3 & F4 to move the cursor, to set the value use buttons F1 & F2, when finished click “ENTER”. The Setting screen appears. Figure 3.2 – Settings. Scroll to TYPE and click Enter in order to change the mode between single phase and three phases. - Page 16 The Setting screen appears. (Please see figure 3.2). Scroll to "Transformer Ratio" and press "Enter". The Transformer Ratio screen appears. In order to set the Current Transformers ratio, scroll to Current Trans and press "Enter". Figure 3.3 – Transformer Ratio. The Current Transformer screen appears.
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Page 17: Vital Settings
Use the buttons F3 & F4 to move the cursor, to set the value use buttons F1 & F2, when finished click “ENTER”. In order to set the Voltage Transformers ratio, scroll to Voltage Trans and press "Enter". Use the buttons F3 & F4 to move the cursor, to set the value use buttons F1 &F2, when finished click “ENTER”. - Page 18 3.3.1 Setting the Power Factor Set Point: Scroll down to Power Factor and press "Enter". The Power Factor setting screen appears. Figure 3.6 – Power Factor change. Use the buttons F3 & F4 to move the cursor, to set the value use buttons F1 &F2, when finished click “ENTER”.
- Page 19 There are a number of methods as following: "RANDOM" - this method enables random selection of equally- sized capacitors. In this method after a certain period, the number of the working hours, of all equally-sized capacitors will be equal. "FIRST" - this method enables fixed selection, meaning a certain capacitor will always be first and the other will always be second and third and so on –...
- Page 20 F2, when finished click “ENTER”. 3.3.4 Capacitor's Value measure: The Elnet PFC enables true capacitors value measure for capacitors 1 up to 6. In order to measure and automatically define the values of the capacitors which are used in the system, at the Vital Setting screen scroll down to Capacitors Measure, and press "Enter".
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Page 21: Non Vital Settings
Once the measuring process is finished, the measured values appear on screen. The column "MEASURE" indicates the measured values. The column "VALUE" indicates the capacitor's value as defined by the user. The "RND" button enables correction of the measured values to the closest rounded value under the condition that the difference between the capacitors doesn't exceed 10%. - Page 22 Figure 3.9 – Non vital setting. 3.4.1 "DELAY ON": Delay On enables setting the delay (seconds) between the decision of connecting the capacitor and its actual connection. This delay is meant to minimize the number of connections/disconnections of the capacitors during control of the desired power factor value.
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Page 23: Working Range
Use the buttons F3 & F4 to move the cursor, to set the value use buttons F1 & F2, when finished click “ENTER”. 3.4.3 "CONTROL RANGE": Control Range enables the user to define the working range of the capacitors in performing power factor correction. When the "control range"... - Page 24 Figure 3.10 – Working range settings. 3.5.1 "MAX. THD I" setting: Enables disconnection of all the capacitors whenever the actual THD I value exceeds the value which was defined by the user. When THD I = 0 this option is disabled. In order to change the Max.
- Page 25 3.5.3 "MIN. CURRENT %" setting: Enables defining value for minimal current under which power factor correction is not required, the value entered as % of the maximum current at the secondary current transformer. In order to change the Min. Current %, scroll to Min. Current % line and press "Enter".
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