User's Manual For MLPR-220 line protection controller_V1.05

Zhuhai Wanlida Electrical Automation Co., Ltd. http://www.zhwld.com MLPR-220 line protection controller user’s manual Preparation： Checking： Permission： Document No.：WLD[K]-JY-323-2014 Version: V1.05.01 Publication Date：2017/07 All rights reserved：Zhuhai Wanlida Electrical Automation Co.,Ltd Note: The Company reserves the right to amend this statement. If a product is inconsistent with the statement, please contact us, we will provide you with the corresponding services. Technical support tel.：(86)0756-3395398 Fax.：(86)0756-3395500 I Contents Contents   FOREWORD ............................................................................................................................................................. 1  1． PRODUCT DESCRIPTION ................................................................................................................................. 2  1.1 Scope ......................................................................................................................................................... 2  1.2 Device features ......................................................................................................................................... 2  1.3 Technical specifications and indicators ................................................................................................. 2  1.4 Device shape and model description .................................................................................................... 3  2． FUNCTIONAL DESCRIPTION ............................................................................................................................ 3  2.1 Protective functioning .............................................................................................................................. 3  2.1.1 Instantaneous over-current protection ............................................................................................... 3  2.1.2 Overcurrent protection.......................................................................................................................... 3  2.1.3 Over-load protection ............................................................................................................................. 3  2.1.4 Zero sequence current protection ....................................................................................................... 4  2.1.5 Leakage current protection .................................................................................................................. 4  2.1.6 Low voltage protection ......................................................................................................................... 4  2.1.7 Over voltage protection ........................................................................................................................ 4  2.2 Settings of protection ............................................................................................................................... 4  3． DEVICE DESCRIPTION .................................................................................................................................... 5  3.1 Indicators ................................................................................................................................................... 5  3.2 Keypad ....................................................................................................................................................... 5  3.3 Display and menu operation ................................................................................................................... 5  4． OPERATING PRINCIPLE..................................................................................................................................... 6  5． PARAMETER SETTING ...................................................................................................................................... 7  5.1 System parameter setting ....................................................................................................................... 7  5.1.1 Parameters list ....................................................................................................................................... 7  5.1.2 Setting method ...................................................................................................................................... 8  5.2 Protective setting ...................................................................................................................................... 8  5.2.1 Method of modifying protective setting .............................................................................................. 9  5.2.2 Protection ON/OFF ............................................................................................................................... 9  5.3 Analog setting ........................................................................................................................................... 9  5.4 System time ............................................................................................................................................ 10  5.5 Password setting .................................................................................................................................... 10  6． CHECK METHOD .......................................................................................................................................... 10  6.1 Preparation before check ...................................................................................................................... 10  6.1.1 Check before power is on .................................................................................................................. 10  6.1.2 Monitoring and adjusting of analog quantities ................................................................................ 10  6.1.3 View binary input ................................................................................................................................. 11  6.1.4 View binary output .............................................................................................................................. 11  6.2 Check of control function ....................................................................................................................... 11  6.2.1 Local control mode ............................................................................................................................. 11  6.2.2 Remote control mode ......................................................................................................................... 11  6.2.2.1 Communication control mode ........................................................................................................ 11  6.2.2.2 Terminal control mode ..................................................................................................................... 11  6.3 Check of protective function ................................................................................................................. 12  6.3.1 Check of instantaneous over-current protection ............................................................................. 12  6.3.2 Check of Overcurrent Protection ...................................................................................................... 12  6.3.3 Check of over load protection ........................................................................................................... 13  6.3.4 Check of zero sequence current protection .................................................................................... 13  6.3.5 Check of Residual current protection ............................................................................................... 13  6.3.6 Check of low voltage protection ........................................................................................................ 14  6.3.7 Check of over-voltage protection ...................................................................................................... 14  6.4 Check of communication function ........................................................................................................ 15  6.4.1 Check of measuring analog value .................................................................................................... 15  6.4.2 Check of remote signal upload ......................................................................................................... 15  7. PRODUCT MAINTENANCE ................................................................................................................................ 15  8. CAUTIONS ...................................................................................................................................................... 15  Appendix 1：MLPR-220 line protection controller terminal figure ......................................................... 16  Appendix Tab.1：Typical specifications of external current transformer .............................................. 17  II Contents Appendix Fig.1: ............................................................................................................................................. 18  III Foreword 1. Model description MLPR-220 line protection controller has three-phase current input of phase A, B, C. The principle of default protection ON/OFF and settings are as follows: all protection are off, settings being the maximum. 2. Quoted standards The universal technical condition of static relay protection and safe automechanism DL 478-2001 1 MLPR-220 line protection controller WLD[K]-JY-323-2014 1． Product description 1.1 Scope MLPR-220 line protection controller works with external primary current transformer, mainly used to protect lines of AC 1200V and below. 1.2 Device features  Uses high-performance 16-bit industrial microprocessors, high integration, functions strong, fast.  Three phase current, voltage AC sampling, perfect measuring and controlling functions.  Small size, under-power consumption, suitable for installation in the switchgear or on centralized panel.  LCD display with wide temperature range.  Strong anti-interference capability: Level Ⅳ of rapid transient interference, level Ⅳ of electrostatic discharge interference, electromagnetic interference Ⅲ radiation level, pulse interference Ⅲ-class group.  With perfect protective function.  Remote start stop control with terminal control mode or communication control mode.  Keeps records even power is off.  4～20mA output with Optical isolation.  Equipped with Modbus-RTU communication method, remote measuring, remote signal and remote control can be achieved through communication network and background monitor system. 1.3 Technical specifications and indicators  Rated parameters  AC voltage input：～380V（direct measuring），～100V（PT measuring）.  AC current： 1～5000A.  Rate frequency：50Hz.  Power supply：AC/DC220V，AC/DC110V.  Main specifications  Accuracy: the measuring error of protective current, voltage does not exceed ±1%; the measuring error of active power, reactive power does not exceed ±3%; the error of power factor does not exceed ±1%; and the frequency error does not exceed ±0.02Hz.  Time delay and trip setting accuracy: a) Trip setting accuracy: the error does not exceed ±3%, current trip setting accuracy: the error does not exceed ±3% or ±30mA，current unbalance setting accuracy: the error does not exceed ±3%. b) Time delay accuracy: the error does not exceed ±100ms when time delay setting is 0s, the error does not exceed ±25ms when time delay setting is 0.1~2s, the error does not exceed ±1% of setting when time delay setting is over 2s. c) Time delay accuracy of Thermal protection: the error does not exceed ±100ms or ±5%; d) Trip setting accuracy of Under-power protection: the error does not exceed ±5%; Time delay accuracy of Under-power protection: the error does not exceed ±300ms;  4 ~ 20mA drive load: ≤ 300 Ω pure resistive load  Output contact rating：AC250V，8A.  Power consumption  Maximum power consumption ≤ 5W.  Environmental specifications  Atmospheric pressure：80kPa～110kPa（below 2000m of sea level）.  Humidity：5% ～ 95%  Operating temperature：-20℃～＋55℃.  Operating Environment：Does not contain materials that lead to metal corrosion or damage to the insulation of gas and more serious mold and dust, does not contain fire explosion hazard. 2 MLPR-220 line protection controller WLD[K]-JY-323-2014 1.4 Device shape and model description  Fig.1-1 Device shape  Fig.1-2 Model description 2． Functional description 2.1 Protective functioning 2.1.1 Instantaneous over-current protection The following setpoints are available for the instantaneous over-current protection, see Tab.2-1. Tab.2-1 Setting item Setting range Setting step Instantaneous over-current setting 0.01-10(Ie) 0.01 Instantaneous over-current protection delay 0-100(S) 0.01 2.1.2 Overcurrent protection The following setpoints are available for the Overcurrent protection, see Tab.2-2. Tab.2-2 Setting item Setting range Setting step Overcurrent setting 0.01-10 (Ie) 0.01 Overcurrent protection delay 0-100(S) 0.01 2.1.3 Over-load protection The following setpoints are available for the over-load protection, see Tab.2-3. Tab.2-3 3 MLPR-220 line protection controller WLD[K]-JY-323-2014 Setting item Setting range Setting step Over-load setting（A） 0.01-10(Ie) 0.01 Over-load protection delay（b） 0-100(S) 0.01 Over-load protection could act as either “alarm mode” or “trip mode”. 2.1.4 Zero sequence current protection The following setpoints are available for the zero sequence current protection, see Tab.2-4. Tab.2-4 Setting item Setting range Setting step Zero sequence current setting 0.01-10(Ie) 0.01 Zero sequence current protection delay 0-100(S) 0.01 2.1.5 Leakage current protection The following setpoints are available for the leakage current protection, see Tab.2-5 Tab.2-5 Setting item Setting range Setting step Leakage current protection setting 2.0-5000.0(mA) 0.1 Leakage current protection delay 0-100(S) 0.01 Leakage current protection could act as either “alarm mode” or “trip mode”. 2.1.6 Low voltage protection The following setpoints are available for the low voltage protection, see Tab.2-6。 Tab.2-6 Setting item Setting range Setting step Low voltage setting 0.1-6000.0(V) 0.1 Low voltage mode 00-01 1 Low voltage protection delay 0-100(S) 0.01 2.1.7 Over voltage protection The following setpoints are available for the over voltage protection, see Tab.2-7。 Tab.2-7 Setting item Setting range Setting step Over voltage setting 0.1-6000V 0.1 Over voltage protection delay 0-100(S) 0.01 Over voltage protection could act as either “alarm mode” or “trip mode”. 2.2 Settings of protection  Select “Parameter” menu, set the rated current of the line and CT coefficient;  Select “Settings” menu, choose the corresponding setting item and make changes;  Select “Protection ON/OFF” menu, choose the corresponding ON/OFF control menu and make changes. Example: Make changes to the setpoints available for the instantaneous overcurrent protection  Select “Parameter” menu, set rated current ;  Select “Instantaneous overcurrent protection” menu, set instantaneous overcurrent protection current, and instantaneous overcurrent protection delay;  Select “protection ON/OFF” menu, set instantaneous overcurrent protection to ON, which means the value of instantaneous overcurrent protection is “1”. Remark: See “5.Parameters setting” for detail information on how to make changes to settings. 4 MLPR-220 line protection controller WLD[K]-JY-323-2014 3． Device description The control panel of MLPR-220 line protection controller is as Fig.3-1  Fig.3-1 3.1 Indicators There are 4 indicators on the control panel of line protection controller, which are RUN, COMM, ALARM, TRIP. RUN: when the line protection controller is on power and running, “RUN” flashes in yellow; COMM: when the line protection controller is communicating, “COMM” flashes in yellow; ALARM: when parameters of the line protection controller are wrong, or alarm is on, “ALARM” is steadily illuminated in red; TRIP: when protection trips, “TRIP” is steadily illuminated in red. 3.2 Keypad There are 7 buttons on the control panel of line protection controller: Close, Open/,  , , ESC, Revert, Enter “Close/, Open/”：When it is in cycle displaying mode, the key used to line control; when it is in parameter modifying mode, the key used to move the cursor; “”：Menu selecting, moving upwards or increasing the value; “”：Menu selecting, moving downwards or decreasing the value; “ESC”：Cancel the operation or return to the higher level menu; “Revert”：The key used to revert signals; “Enter”：Confirm the menu or value. 3.3 Display and menu operation When it is in normal operating, it display IA, IB, IC, Uab, Ubc, Uca, P, Q, cosφ, F,DI,DO in cycle and real-time, press “” “” can check every value. (IA: phase A current，I0: Residual current，I0j: zero-sequence current， F: frequency，DI: binary input, DO: binary output) The meaning of every menu is as follows: View data-------- Used to view the protective data, measuring data, binary input, power metering and device version information: Revert--------Used to revert signals; Setting--------Used to set and view protections and protection ON/OFF; Parameter--------Used to set and view parameters of communication, line control, line running, DCS, CT coefficient, power metering etc; Events--------Used to view and delete event report and delete line operation parameter; Time-------- Used to set and view the system time; Password--------Used to modify system password; 5 MLPR-220 line protection controller WLD[K]-JY-323-2014 Binary output-------- Used to test the binary output; calibration--------Used to calibrate measuring value. 4． Operating principle The line protection controller firstly sample the three phase current of phase A,B,C and zero sequence current I0, leakage current, voltage of phase A to phase B through current transformer, potential transformer, then the signal is transmitted to analog-to-digital conversion, the cpu reads the data of all channels and calculates and processes, then compare them to every settings and find out if the line is on fault, if it is, then the corresponded relay is operated and the information is displayed on the LCD screen. See the principle on Fig.4-1.  Fig.4-1 When it is in normal operation, it is in monitoring state, it displays three phase current, three phase voltage, frequency, power etc. in cycle. 6 MLPR-220 line protection controller WLD[K]-JY-323-2014 5． Parameter setting 5.1 System parameter setting 5.1.1 Parameters list Category Setting name Setting range Remarks Communication address 01-99 00：2.4Kbps 01：4.8Kbps Communication Baud rate 00-04 02：9.6Kbps settings 03：19.2Kbps 04：38.4Kbps 00：No check Parity check setting 00-02 01：Odd 02：Even 00：Remote Remote/Local control selection 00-02 01：Local 02：Binary input control 00：Binary input control Remote control Line Control mode 00-02 01：Contact control 02：Communication control Control return time 0.50-10.00s After Control lines, return time of the Outputs Protection return 00-01 00：Immediately return method 01：Return after revert Rated Current 0.1-5000.0A Zero Seq.RCur 0. 1-5000.0A Line running Zero Seq.Mode 00-01 00：Calculate 01：Measure DA channel 00-05 00: IA、01：IB、02: IC、03: UABselection DCS 04: UBC、05: UCA parameters DA coefficient 1 setting setting 1.000-8.500 4mA channel calibration DA coefficient 2 setting 0.100-1.000 20mA channel calibration Protective CT coefficient 0.1-5000.0 CT/PT Residual current CT coefficients coefficient setting (Zero sequence CT 0.01-500.00 coefficient) PT coefficient 0.01-80.00 Positive active energy meter 0-4294967.295KWH Power Negative active metering energy meter 0-4294967.295KWH setting Positive reactive energy meter 0-4294967.295WVH Negative reactive energy meter 0-4294967.295WVH Display setting Display setting 0-32  “Protection return method” parameters setting note： 7 MLPR-220 line protection controller WLD[K]-JY-323-2014 When protection operates, the return methods of protection output are: “direct return” means the protection output returns automatically when the fault disappears. “Reverting return” means protection output returns by reverting operation and it must meet reverting conditions when the fault disappears.  Please set the CT coefficient, and then set the rated current.  Residual current CT coefficient(Zero sequence CT coefficient) parameters setting note： When Zero Seq.Mode is calculate, the CT coefficient is Residual current CT coefficient; When Zero Seq.Mode is measure, the CT coefficient is Zero sequence CT coefficient. 5.1.2 Setting method  Move the cursor to “parameter” menu on main menu, press “Enter” button, to enter “password” menu, see Fig.5-1;  Input the correct password(“0000” by default), press “Enter” button to enter parameter setting menu;  Choose the demand parameter, press “Enter” to enter corresponding sub-menu;  Press “” and “” to choose the menu to make changes, press “Enter” button to enter and make changes, see Fig.5-2;  Press “”, “” button to move cursor to desiring digit(the digit which is desired to modify), press “” and “” button to increase or decrease value;  After modification, press “Enter” to Enter the modification, if “ESC” is pressed, the modification is discarded. Enter password COMM. setting Device address. 0000 01 Fig.5-1 Fig.5-2  Note: When “Protection CT coefficients” or “line rated current” are being modified, please put all protections off. MLPR-220 line protection controller change the current to voltage signals through external current transformer, “protective CT coefficient” should be set according to the model of the external current transformer, the value equals to the one marks as line rated current on current transformer. Example: The model of current transformer is “Current transformer CT-25M2 10”, primary rated current of line is 25A, maximum range is 10 times, so the maximum current to be measured is 25×10＝250. Set current transformer coefficient of menu “Current transformer coefficient” to 25.  “DCS parameters setting” Firstly, the current or voltage channel expected to transfer need to be set, before connected to any source, set “DA coefficient 1 setting” to let “terminal 31, 32”(see MLPR-230 line protection controller terminal figure for detail) output 4mA DC current; set “DA coefficient 2 setting” to let “terminal 31, 32” output 20mA DC current. After setting “DCS parameter settings”, when applying analog signal to corresponding channel, “terminal 31, 32” will output 4-20mA, See the principle on Fig.5-3. PT ≠ 1.00 example：PT = 6.60 U 20mA：6.6×120 = 792VPT=1.00 U I 456 V PT*120 CT OUTPUT OUTPUT OUTPUT 0 4mA 20mA 0 4mA 20mA 0 4mA 20mA DA channel selection DA channel selection DA channel selection :UAB、UBC、UCA :UAB、UBC、UCA :IA、IB、IC Fig.5-3 8 MLPR-220 line protection controller WLD[K]-JY-323-2014 5.2 Protective setting 5.2.1 Method of modifying protective setting  Move the cursor to “setting”, press “Enter” button, enter password(“0000” by default) to enter setting modification menu;  The method of modifying is the same as that of “parameter”;  Please refer to this manual “2.1 protective function” for protective settings.  The setting range and setting step in the item are set according to limit state. The range is slightly different according to the rated current of line. 5.2.2 Protection ON/OFF  Select “protection ON/OFF” menu, press “Enter” button, enter password(“0000” by default) to enter protective setting menu;  Move the cursor to “Protection ON/OFF”, to enter protection ON/OFF menu.  Press “”, “” button to select ON or OFF, press “” and “” button to choose protection.  If the “PT signal alarm” is on, the low-voltage protection and under-power protection should be blocked with alarm signal when PT is broken.  zero sequence current protection and Residual current protection can not be used together. Tab.5-1 No. Protection Name Setting range 1 Instantaneous overcurrent protection ON, OFF 2 Overcurrent protection ON, OFF 3 Over load protection trip ON, OFF 4 Over load protection alarm ON, OFF 5 Zero sequence current protection ON, OFF 6 Leakage current protection trip ON, OFF 7 Leakage current protection alarm ON, OFF 8 Low voltage protection ON, OFF 9 Over voltage protection trip ON, OFF 10 Over voltage protection alarm ON, OFF 11 PT signal alarm ON, OFF 5.3 Analog setting  Select “calibration” menu, press “Enter” button, enter password to enter analog setting menu.  Apply corresponding analog source, enter into the actual value applied.  The standard of corresponding correction value is: voltage is the rated measuring voltage, leakage current is 1000mA, three phase current is the rated current of corresponding current transformer. If the value input is too high or too low, calibration will not succeed, it will display message “Please input rated value”.  The content of “Automatic calibration” is listed in Tab.5-2. Tab.5-2 No. Parameter name Setting range remarks 1 Calibrate voltage UAB 0-9999.99V 2 Calibrate voltage UBC 0-9999.99V 3 Calibrate voltage UCA 0-9999.99V 4 Calibrate current IA 0-9999.99A 5 Calibrate current IB 0-9999.99A 6 Calibrate current IC 0-9999.99A 7 Calibrate Residual current 0-9999mA Calibrate zero sequence current 0-9999.99A 8 Calibrate UAB<>IA 0-89.99 Calibrate After calibrate current and voltage9 UBC<>IC 0-89.99  Correct the analog channel before applying corresponding source is prohibited. 9 MLPR-220 line protection controller WLD[K]-JY-323-2014  Please proofread voltage and current before UAB <> IA and UBC <> IC has been proofread correction. When proofreading UAB <> IA and UBC<>IC, the angle which has been inputted stands for two-table method measured active power. MLPR-220 can be corrected by applying the maximum current of “the scope of application”(see nameplate of external primary current transformer, model description in Fig.5-3, see App. Tab.2 for selection of transformer) marked on the primary current transformer.  Fig.5-4 5.4 System time  Select “time” in main menu, press “confirm” button, to enter system time menu;  Press “Enter” button in “time” menu, to do modifications;  Press “”, “” button to select corresponding parameter which is desired to modify, press “” and “” button to change the value;  After modification, press “Enter” to Enter the modification, if “ESC” is pressed, the modification is discarded. 5.5 Password setting  Select “password” in main menu, press “Enter” button, enter password modification menu, the password is “0000” by default;  Enter old password first, press “Enter” button to enter new password modification menu, press “ESC” to exit password modification menu;  Enter new password, press “Enter” to Enter the modification, if “ESC” is pressed, the modification is discarded. 6． Check Method 6.1 Preparation before check 6.1.1 Check before power is on External wiring is correct, appearance is good, plug-ins are in good contact with others. 6.1.2 Monitoring and adjusting of analog quantities Firstly set CT/PT coefficients correctly in “parameter”-“CT/PT coefficient setting” menu, apply current of phase A, B, C, leakage current ,UAB, UBC and UCA according to Tab.6-1, view the data in main cycle display through moving “” button. Apply primary current directly to the external primary current transformer. Tab.6-1 Analog name Checking method Protective phase A current Apply rated current, the variations of display should not exceed 1% Protective phase B current Apply rated current, the variations of display should not exceed 1% Protective phase C current Apply rated current, the variations of display should not exceed 1% Residual current I0 Apply rated Residual current(rated zero sequence (zero sequence current I0j ) current), the variations of display should not exceed 1% Phase to phase voltage UAB Apply rated measuring voltage（380V or 100V etc.）, Phase to phase voltage UBC device displays the primary voltage(secondary voltage*PT coefficients), the variations should not Phase to phase voltage UCA exceed 2%  Choose “view data” menu, press “Enter” button, enter real-time data viewing menu;  If the data displayed exceed 5% the actual value applied, correct the corresponding analog 10 MLPR-220 line protection controller WLD[K]-JY-323-2014 channel through “channel setting” menu. 6.1.3 View binary input  Move the cursor to “binary input” in “view data” menu, press “Enter” to enter binary input menu;  Connect rated voltage (AC, DC 220V or 110V) to COM terminal, the other to IN1～IN7, the corresponding display bit will change from “open” to “close”;  Disconnect binary input voltage, the corresponding display bit will change from “close” to “open”. 6.1.4 View binary output  Choose “binary output”, press “Enter” and enter password(“0000” by default) to view binary output in the menu;  Move the cursor to the output desired to check, press “Enter” button, enter the corresponding output check menu, select close, open to finish checking;  Or move the cursor to operate all outputs, press “Enter” button, enter operate all output menu, select close, open to finish checking. 6.2 Check of control function 6.2.1 Local control mode  Remark: Only when it is on cycle display mode, the user can push the pushbutton “Close” and “Open” to operate the breaker, otherwise he can’t do it. After the user has operated the breaker, he had best choose the “Remote/Local” to “remote”.  Select local in “remote/local selection” in menu “parameter”-“line control parameter”, or select binary input control and terminals COM-IN3 disconnecting, the line protection controller will be in local control mode;;  Under no protection operating, in the loop menu, press the pushbutton “Close”, get into the display window shown as Fig.6-1.  Press the pushbutton “Enter”, Out1 will close immediately;  Under no protection operating, in the loop menu, press the pushbutton “Open”, get into the display window shown as Fig.6-2.  Press the pushbutton “Enter”, Out2 will close immediately. Close Bkr Confirm Fig. 6-1 Open Bkr Confirm Fig. 6-2 6.2.2 Remote control mode  Select remote in “remote/local selection” in menu “parameter”-“line control parameter”, or select binary input control and Connect rated voltage (AC, DC 220V or 110V) to both sides of the terminals COM-IN3, the line protection controller will be in remote control mode;  Remote control mode is classified of terminal control and communication control.  By menu “parameter”-“ Remote control mode” can select remote control mode.  If remote control mode is “communication control”, or if remote control method is “binary input select” when IN4 is also 1, the line protection controller is in communication control mode; If remote control mode is “terminal control”, or if remote control method is “binary input select” when IN4 is 1, the line protection controller is in terminal control mode. 6.2.2.1 Communication control mode If remote control mode is “communication control”, communication close or open the line can be achieved through sending order from background software to line protection controller. 6.2.2.2 Terminal control mode If remote control mode is “terminal control”, terminal close or open the line can be achieved. 11 MLPR-220 line protection controller WLD[K]-JY-323-2014 【Remarks：】Please see the setting descriptions of “control input method” in this manual 5.1.1.  Apply voltage between IN5 and COM, the OUT1 terminals should close immediately, indicating that the breaker should close.  Apply voltage between IN6 and COM, the OUT2 terminals should close immediately, indicating that the breaker should open.  Remark: if line protection controller has any protection operation or protection action signal is not reverted, prohibit all control functions. 6.3 Check of protective function  Note: Ie stands for the rated current of line.  Note: when checking portective function, please make sure that the current is at the range of 0.05～1.0 of the external current transformer. 6.3.1 Check of instantaneous over-current protection When one of the current of phase A, B, C becomes higher than the setting value and last for the delay time set the protection operates. The operation logic of instantaneous over-current protection is as Tab.6-2, the parameters needed for instantaneous over-current protection are in 2.1.1 this manual , Tab.2-1. Tab.6-2 Instantaneous Instantaneous over-current protection ON over-current Instantaneous current > Instantaneous over-current protection protection setting current operation logic Current time > setting delay  Wire as Fig.6-3, set instantaneous over-current protection to ON, set delay as 0 second, set other protections to OFF;  Set according to Tab.6-3, test the actual value, and record it in the table.  When the protection operates, terminal OUT2, OUT3 should be shorted. Tab.6-3 Instantaneous over-current protection setting current 1In 2In 5In 10In Actual value when operates MLPR-220 IA(IB,IC) IA(IB,IC) L IA＇(IB’,IC＇) IA’(IB’,IC’) UA UA Power supply UB UB UC UC N  Fig.6-3 6.3.2 Check of Overcurrent Protection When one of the current of phase A, B, C becomes higher than the setting value and last for the delay time set the protection operates. The operation logic of Overcurrent Protection is as Tab.6-4, the parameters needed for Overcurrent Protection are in 2.1.2 this manual , Tab.2-2. Tab.6-4 Overcurrent Overcurrent Protection ON Protection Overcurrent current > Overcurrent Protection setting current operation logic Current time > setting delay  Wire as Fig.6-3, set Overcurrent Protection to ON, set delay as 0 second, set other protections to OFF;  Set according to Tab.6-5, test the actual value, and record it in the table.  When the protection operates, terminal OUT2, OUT3 should be shorted. 12 MLPR-220 line protection controller WLD[K]-JY-323-2014 Tab.6-5 Overcurrent Protection setting current 2.0Ie 3.0Ie 4.0Ie Actual value when operates 6.3.3 Check of over load protection When actual current is over the over load current setting and last over setting delay, the protection operates. The operation logic of over load protection is as Tab.6-6, the parameters needed for locked rotor protection are in 2.1.3 this manual , Tab.2-3. Tab.6-6 Over load protection is ON Over load protection operation logic Over load current > over load current setting Over load time > over load delay setting  Wire as Fig.6-3, set over load protection to ON, set over load delay to 0S, set other protections to OFF.  Set according to Tab.6-7, test the actual value, and record it in the table.  If over load protection is in alarm mode  When it operates, terminal OUT3 should be shorted and “ALARM” is illuminated in red, when fault current is cut, alarm revert, OUT3 should be opened and turns off the “ALARM”.  If over load protection is in trip mode  When the protection operates, terminal OUT2, OUT3 should be shorted,.  If over load protection is in trip mode, alarm mode blocked. Tab.6-7 Over load current setting (Ie) 1Ie 2Ie 3Ie Actual value when operates 6.3.4 Check of zero sequence current protection When the zero sequence current is higher than the setting and last for the delay setting it operates. The operating logic of zero sequence protection is as Tab.6-8, for the details of parameters needed for zero sequence current protection please refer to this manual 2.1.4 Tab.2-4. Tab.6-8 Zero sequence current protection is ON Zero sequence current protection operation logic Zero sequence current > zero sequence current setting Zero sequence current time > zero sequence delay setting  Remark：in order to maintain the correctness of calculation, 3 phase current should be applied to do this test.  Wire as Fig.6-3, set zero sequence current protection to ON, set other protection to OFF. Set zero sequence current delay to 0S.  Set the zero sequence current setting according to Tab.6-9, test the actual value, and record it in the table.  When the protection operates, terminal OUT2, OUT3 should be shorted. Tab.6-9 Zero sequence current protection setting (Ie) 2 Ie 5 Ie 10 Ie 15 Ie Actual value when operates 6.3.5 Check of Residual current protection When “Zero Seq.Mode” in “Measure” mode, the protection is blocked; When the Residual current is higher than the setting and last for the delay setting, it operates. The operating logic of Residual current protection is as Tab.6-10, for the details of parameters needed for Residual current protection please refer to this manual 2.1.5 Tab.2-5. Tab.6-10 Residual sequence current protection is ON Residual current protection operation logic Residual current > Residual current setting Residual current time > Residual current delay setting  Apply Residual current as Fig.6-4 wire as Fig.6-3, set Residual current protection to ON, set other protection to OFF. Set leakage current delay to 0S.  Set the Residual current setting according to Tab.6-11, test the actual value, and record it in the table. 13 MLPR-220 line protection controller WLD[K]-JY-323-2014  If Residual current protection is in alarm mode  When it operates, terminal OUT3 should be shorted and “ALARM” is illuminated in red, when fault current is cut, alarm revert, OUT3 should be opened and turns off the “ALARM”.  If Residual current protection is in trip mode, the alarm mode is blocked  When the protection operates, terminal OUT2, OUT3 should be shorted. MLPR-220 I0 I0 L I0＇ I0’ N  Fig. 6-4 Tab.6-11 Residual current protection setting (mA) 100 500 1000 5000 Actual value when operates 6.3.6 Check of low voltage protection When the current is higher than 0.1Ie time of rated current of line, and the line voltage drops below the setting from normal value and last for the delay setting, it operates. If PT alarm is on, the protection is blocked when PT is broken. When the voltage and current drop at the same time, the low-voltage protection also operates after the delay.The operating logic of low voltage protection is as Tab.6-12, for the details of parameters needed for low voltage protection please refer to this manual 2.1.6 Tab.2-6. Tab.6-12 Low-voltage protection is on. Low-voltage protection logic Voltage < setting of low-voltage protection Low-voltage protection delay > time-delayed setting  Wire as Fig.6-3, set Low-voltage protection to ON, set over load delay to 0S, set other protections to OFF.  Set the low-voltage setpoint as Tab.6-13, measure the operational value and then keep a record in the table.  When the protection operates, terminal OUT2, OUT3 should be shorted.  If PT coefficients is1, the default rating voltage is 380V; if PT coefficients larger than 1, the rating voltage is 100V × PT coefficients. Tab.6-13 Low-voltage protection setting(V) 200 250 300 350 Operational value 6.3.7 Check of over-voltage protection When the current is higher than 0.1Ie time of rated current of line, and bus voltage is higher than the setting, and meets the time-delayed value, the protection operates. The operation logic of over-voltage protection is as Tab.6-14. The needed parameters of over-voltage protection are provided in the Tab. 2-7 of this manual 2.1.7. Tab.6-14 Over-voltage protection is on. Over-voltage protection operational logic Over-voltage > over-voltage protection setting Over-voltage protection delay > time-delayed setting  Wire as Fig.6-3, set over-voltage protection to ON, set over load delay to 0S, set other protections to OFF. 14 MLPR-220 line protection controller WLD[K]-JY-323-2014  Set according to Tab.6-15, test the actual value, and record it in the table.  If over-voltage protection is in alarm mode  When it operates, terminal OUT3 should be shorted and “ALARM” is illuminated in red, when fault current is cut, alarm revert, OUT3 should be opened and turns off the “ALARM”.  If over-voltage protection is in trip mode  When the protection operates, terminal OUT2, OUT3 should be shorted,.  If over-voltage protection is in trip mode, alarm mode blocked. Tab.6-15 Over-voltage alarm setting (V) 400 420 440 460 The operational value 6.4 Check of communication function 6.4.1 Check of measuring analog value Current of phase A, B, C, leakage current, zero sequence current, phase to phase voltage UAB, UBC, active power, reactive power, power coefficient can be transmitted to background monitor system through communication port. 6.4.2 Check of remote signal upload All protection information, binary change information can be transmitted to background monitor system through communication port. 7. Product maintenance Please contact the manufacturer to deal with. 8. Cautions  Please refer to the label of the device for the details of the voltage of line protection controller, please be sure about the voltage and the power supply terminals, the internal components may be damaged if the wiring method is not correct.  When doing checking of the line protection controller, please don’t apply high current for long.  Terminal “shielding ground” should be firmly connected to ground.  Non-professionals should not disassemble the line protection controller. 15 MLPR-220 line protection controller WLD[K]-JY-323-2014 Appendix 1：MLPR-220 line protection controller terminal figure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Output 3 Output 5(13，14 are Power supply 3 Output 1 Output 2 （Protection Output 4（ （Closing （Opening means ground operated / （remote the Power Supply ） output output Device output Failure closed ） ） ） Failure terminals) ） MLPR-220 line protection controller terminal definitions Ua Ub Uc Ia Ib Ic In 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 N ote: Input 7 is shared with leakage current / zero sequence current input. When ordering, please mention that w hich function is used. 16 COMM. Ｂ COMM. Ａ DC output - DC output + Signal input COM Input １(Breaker state) Input ２（Reserve） Input ３（Remote / Local） Input ４（Remote control mode） Input ５（Close breaker） Input ６（Open breaker） Input ７ (leakage current / zero sequence current) Appendix Tab.1：Typical specifications of external current transformer Typical specifications of external current transformer No. Specifications of current transformer Power of line transformer hole maximum diameter measuring range 1 1A <0.5KW ∮20mm 10X 2 5A 0.5~2.5KW ∮20mm 10X 3 12A 2.5~6.0KW ∮20mm 10X 4 25A 6.0~12.5KW ∮30mm 10X 5 50A 12.5~25KW ∮30mm 10X 6 100A 25~50KW ∮30mm 10X 7 200A 50~100KW ∮30mm 10X The specifications of external current transformer above are the rated current of the corresponding line, the maximum measuring range is 10X. If the rated current of the line is too high, a combination of 1A and 5A external current transformer and the primary high-capacity current transformer can be used. 17 Appendix Fig.1: 18