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Summary of Contents for Sfere LNF72E
- Page 1 Multifunctional power meter user 's manual This manual is applicable to the following models of products LNF72E/LNF72Y/LNF80E/LNF96E/LNF96Y (External transformer) JIANGSU SFERE ELECTRIC CO., LTD. ...
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Page 2: Table Of Contents
Safety instructions Content Thank you for choosing the products developed by Jiangsu Sfere Electric Co., Ltd. In order to 1. Product Profile .................... 1 facilitate your purchase and safely, correctly and efficiently use this product, please read this manual carefully and pay attention to the following points when using it. 1.1 Reference standards .................. 1 CAUTION： 1.2 Product Overview ................... 1 ◆The equipment must be installed and repaired only by qualified personnel. 1.3 Instrument Type ..................... 2 ◆Before performing any internal or external operation to the equipment, make sure the CT input signal and the power supply are switched off 2. Technical parameters .................. 3 ... -
Page 3: Product Overview
6.2 Inaccurate measurement of current U I P ............ 43 6.3 On the inaccuracy of electric energy ............ 44 1. Product Profile 6.4 Instrument does not light up ................ 44 1.1 Reference standards 6.5 The instrument does not respond to any operation ........ 44 6.6 Other abnormal conditions ................ 44 Reference to national standards GB/T 17215.322‐2008 Static active power meters (0.2 S and 0.5 S) Appendix MODBUS‐RTU Communication Register Information Table .... 4 5 GB/T 17215.323‐2008 Static reactive watt‐hour meters (levels 2 and 3) GB/T 17626‐2006 EMC test and measurement techniques 0x03/0x04 Command data register address: ............ 45 Corresponding international standards Extreme demand data .................. 46 IEC 62053‐22:2003 Electrical Measurement Equipment (AC)‐ Special Requirements ‐ Harmonic data .................... 48 Part 22: Static electricity meters (0.2 S and 0.5 S) ... -
Page 4: Instrument Type
1.3 Instrument Type 2. Technical parameters □ - □ □ □ L N F Parameters Corresponding current transformer type: U、I: 0.2S, P、Q、PF：0.5S, Active Power： S0 ： SHI‐0.66 Current Transformer 5‐6300A/ 5 A or 1A 0.5S ， reactive power ： 1S, Analog Precision grade S1 ： SHI‐BC TM Closed type transformer 50‐2000A/33 3 mV output：0.5S ... -
Page 5: Instrument Dimensions
Instrument Dimensions dimensions size Model l×h a×b s×y horizo vertica n m ntal l LNF96E/Y 96×96 90×90 91×91 96 96 75 96 LNF80E 83×83 75×75 76×76 83 83 67 89 LNF72E/Y 74×74 66×66 67×67 74 74 77 99 ... -
Page 6: Installation Mode
5 6 7 8 12 13 instrument. 3.3 Description of terminal function The instrument function terminals are numbered uniformly, as shown in the following table: Power AC/DC80‐270V 1，2 Current signal 4，5，6，7，8，9 Three‐phase current input Note: LNF72E/LNF72EY： only 1 channel power pulse output. Voltage signal 11，12，13，14 Three‐phase voltage input The current signal input can be Shi bctxxx / 333mv or Shi sctxxx / 333mv. Relay output 15—18 2‐way relay output Input current signal shall be specified when ordering. Analog output 30—31 1 analog output Power ... -
Page 7: Input Signal Line Connection
3.4 Input signal line connection 3.5 Current Transformer Specification 1. Closed Current Transformer Three phase three wire, Three phase three wire, 2CT, no PT 2CT, 2PT Model Shape Technical parameters 13 14 Rating: 50A 13 14 Through cable aperture (mm): ɸ 18 Boundary dimension (mm): 36 × SHI‐BCT50M 20 × 59 Three phase four wire, Three phase four wire, 3CT, no PT 3CT, 3PT ... - Page 8 Rating: 600A 2. Open Current Transformer Through cable aperture (mm): Model Dimensions Remarks ɸ29 42×12 Rated value: 5A Boundary dimension (mm): 75 × Through cable aperture (mm): ɸ 9 22.5 × 95 Boundary dimension (mm): 30 × 26 SHI‐BCT600M × 42 SHI‐SCT05M Rating: 800A Through cable aperture (mm): ɸ61 82×22 Rated value: 100A Boundary dimension (mm): 132 Through cable aperture (mm): ɸ 16 × 37 × 158 ...
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Page 9: Menu Display And Programming
Rating: 600A 4. Menu Display and Programming Through cable aperture (mm): ɸ 35 4.1 Panel Description and Use Boundary dimension (mm): 65 × 56 × 85 SHI‐SCT600M Typical wiring mode of external transformer: LNF96EY: panel description 1 ‐ power indicator; 2 ‐ over limit indicator; 3 ‐ display area, display relevant measurement and programming information; 4 ‐ communication indicator; 5 ‐ the key is used to display switching or programming settings. ... -
Page 10: Menu Introduction And Operation
4.2 Menu Introduction and Operation The meter measurement display includes power and electric energy. Press " " or " " key to cycle the measurement data. Press "Menu" key to quickly switch the display between power and electric energy. 4.2.1 Electricity display The electric quantity display interface, with LCD as an example, respectively displays the voltage, current, active / reactive power, power factor, frequency and switching value status. The display interface is described as follows: Table 4‐1 electric quantity display interface Electricity Display Interface Note Three phase voltage. Shows Ua=220.6 V,UbUa=220.7 V,UcUa=220.8 V. LNF96E: panel description 1‐ k and m are the order of measurement data. For example, when the first row of digital display 5701 is on, if the K and M indicator lights are not on, the total Three phase line voltage. Represents active power P = 5701w, if the K indicator lights up, P = 5701kw, and if the M Uab=380.0 V, UbcUab=380.1 V, UcaUab=380.3 ... - Page 11 Total active power. The left shows total active Three ‐ phase current. Represents three‐phase power P= W.5700 current Ia= A.5.011 A,IbIa=5.012 A,IcIa=5.013 Three‐phase active power. The left shows Total reactive power. The left shows a total three‐phase active power Pa=5701 reactive power Q= var.2200 W,PbPa=5702 W,PcPa=5703 W.. Three‐phase reactive power. The left shows Total apparent power. The left image shows three‐phase ...
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Page 12: Electricity Display
4.2.2 Electricity display The display interface shows the forward / reverse active power, inductive / capacitive reactive power, respectively. The display interface is described as follows: Table 4‐2 electric energy display interface Total power factor. left plot represents the Electricity display interface Note total power factor PF=0.980. Total active power. The left graph represents the forward total active power EP= kWh.38866.77 Digital input. the left figure 12 corresponds to 2 channels of switch quantity input respectively, when there is a signal input, the corresponding number will flicker. ... -
Page 13: Harmonic Display
4.2.3 Harmonic display When the main menu is displayed as "p.thd", it will enter into the Displays the total harmonic distortion of the harmonic display interface. current THD, the left The harmonic display interface shows the total harmonic distortion rate Ia total harmonic distortion rate =3.01% of each phase voltage and current respectively. The sub harmonic components can be read through communication, and the display The fractional harmonic inclusion rate is interface is as follows: displayed by the confirmation key Table 4‐4 harmonic display interface Harmonic Display Displays the total harmonic distortion of the Note Interface current THD, the left Display total harmonic distortion of voltage THD, Ib total harmonic distortion rate =3.12% left ... -
Page 14: Setting Menu Structure
4.2.4 Setting menu structure The programming setting menu adopts the hierarchical structure management way: The total harmonic distortion of the voltage in the first row displays the first level menu information, the second row displays the the case of three‐phase three‐wire THD, the total second level menu information, the third row displays the third level menu harmonic distortion Ubc in the left image =4.03% information, the programming setting menu structure schematic diagram is shown below The fractional harmonic inclusion rate is displayed by the confirmation key Programming password System setting Cycle display Brightness degree Display item Alarm threshold value Clear energy ... - Page 15 Table 4‐3 Programming Settings Menu Details Level 1 Level 2 Level 3 Note Input Wiring mode setting Password ～ User Password Primay voltage range Cycle display NO：no cycling or Secondary voltage range YES：3 seconds interval Backlight Time Backlit Four Key, 0 Always 0～180 Primary current range bright System ...
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Page 16: Programming Methods
Communic baud rate Select baud rate: 2400、 4800、 4.3 Programming methods ～ ations 9600 Long press "Menu" key, when the main menu is displayed as " ", press ： No check ,1 stop bit " " or " " key to select " " to enter the password authentication ： Odd check ,1 stop bit Data format interface, press " " or " " key to enter the password (the initial password of ：Dual check ,1 stop the system is 0001), and then press " " key to enter the programming interface. ... -
Page 17: System Setup
4.3.1 System setup 4.3.2 Signal Input Setup If the user password is changed to 112 and the electrical data is cleared, the menu If the signal is 10 kV/100V,2000A/5A meter, the menu operation steps are as follows: operation steps are as follows: Entering programming Enter Programming Settings interface Change password to 112 Enter the primary voltage menu and k the lights on Set cycle display Change primary voltage range to 10 kV Clear energy Change secondary voltage ranges to 100 V Save modified data and Menu Menu exit programming mode Change primary mid line current range to 20 kA Menu Menu Save and Exit ... -
Page 18: Relay Output Settings
4.3.3 Communication settings 4.3.4 Relay output settings If the instrument communication address is 12, baud rate is 9600, data format is If the line voltage high alarm output, when the voltage is more than 110 V to E81 dual check mode, menu operation steps are as follows: achieve the first switch quantity alarm output, that is, the first switch quantity on, menu operation steps are as follows: Enter programming interface Enter programming interface Change communication address to 12 Change relay output mode to alarm mode Change baud rate to 9600 Change pluse width to 10s Change check mode to E81 Change alarm mode to high line voltage alarm Save modified data and Menu exit programming Change alarm value to 110V Change hystersis value to 10V Set delay time as 9s Save modified data and Menu Menu exit programming ... -
Page 19: Analog Output Setting
5. Functional modules 4.3.5 Analog output setting 5.1 Communications If the total active power is set at 1000‐5700w and the analog quantity outputs 4‐20mA current signal, the menu operation steps are as follows: 5.1.1 Physical layer Set the lower and upper limit data of analog quantity transfer, change the primary 1) RS485 communication interface, asynchronous half duplex mode; floating‐point power data to secondary power data for modification and setting, 2) The communication speed is 2400‐9600bps, which can be set by default; and then calculate it as floating‐point data after setting. The corresponding 3) Byte transfer format (N81, N82, E81, o81): 1 start bit, 8 data bits, (1 parity bit), 1 / secondary electricity data unit is: voltage (0.1V), current (1mA), power (1W / 1var / 2 stop bits. 1va), power factor (0.001), frequency (0.01Hz). When corresponding to direct current input, CT has no definition of rated current, and we default 5A as rated 5.1.2 MODBUS‐RTU of communication protocols current. For example: rated input bct100a, CT ratio = 100 / 5 = 20; rated input instrumentation supports standard Modbus‐RTU communication protocols. bct200a, CT ratio 200 / 5 = 40. The power alarm value is the same Structure of the data frame: i.e. message format. Calibration Address code Functional code Data code Code Enter the programming set 1 byte 1 byte N bytes ... -
Page 20: Format Directive
contents of these data may be numeric values, reference addresses, or set values. bytes For example, the function code tells the terminal to read a register, the data field Data 1～247 0x02 0x0000 0x0001～0x000C CRC16 needs to indicate which register to start from and how many data to read, while the range data code of the slave contains the data length and corresponding data. Message 0x01 0x02 0x00 0x00 0x00 0x04 0x79 0xC9 Check code: the error check (CRC16) field takes two bytes and contains a 16 bit example binary value. The CRC value is calculated by the transmission device, and then Response attached to the data frame. The receiving device recalculates the CRC value when Data code Frame Address Function receiving data, and then compares it with the value in the received CRC field. If the Numbers of Check code structure code code Register value two values are not equal, an error occurs. register byte 5.1.3 Format Directive Occupied 1byte 1byte ... - Page 21 register "0x00 0x06" indicates the data length 6 (3 float type data occupying six bytes registers). Message 0xD4 0x01 0x0F 0x00 0x00 0x00 0x02 example 0x0A （4）Remotely control single relay output（Function code 0x05） Note: Request The relay action value of the host request corresponds to each relay output starting Data code from the lowest bit of byte. 1 means connecting relay and 0 means disconnecting Frame ...
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Page 22: Power Pulse Output
instrument is 10kV / 100V 400A / 5A, then the accumulated electric energy of the 5.2 Power pulse output instrument in this period is n / 5000 × 100 × 80 degrees. The meter provides two‐way active and reactive energy metering, two‐way electric 5.3 Digital input energy pulse output function and RS485 digital interface to complete the display and remote transmission of electric energy data. The instrument realizes the data of The instrument supports 2‐way switch input, please refer to the selection table for active electric energy and reactive electric energy at the primary side; the electric details. energy pulse of the optocoupler relay with open collector level realizes the remote The switch value input module adopts the dry node resistance switch signal input transmission of active electric energy and reactive electric energy, and the total mode, and the instrument is equipped with + 15V working power supply inside, number of pulses of the instrument can be collected by the remote computer without external power supply, which can be used to monitor the fault alarm node, terminal, PLC and di switch acquisition module to realize the cumulative opening and closing status, handcart position, capacitor input status of capacitor measurement of electric energy. The output mode is the way of power accuracy test compensation cabinet, etc., and the status information can be transmitted to the (National Measurement Regulation: pulse error comparison method of standard intelligent monitoring system through the communication interface, with the meter). remote control / alarm relay function It is convenient to realize automatic opening and closing. 5.4 Relay output The instrument supports two relay switch outputs. There are two working modes for relay output: electric quantity alarm mode and communication remote control mode. Each relay can flexibly set working mode, alarm item and alarm range in programming operation. Note: the data format of the alarm range is the integral data of the secondary power grid. For the specific format, please refer to the unit of the degree value in the table below ‐ analog output comparison table, or refer to the data format of the secondary power grid in the communication address information table. (alarm item followed by "H" indicates high alarm output, and "L" indicates low alarm output) Units with alarm items and corresponding alarm threshold values ... -
Page 23: Analog Output
15 Ul.L xxx.x V Low Voltage Alarm The remote relay output must turn off the alarm function. The output pulse width of the relay can be set. If the setting value is 0, the remote control relay output is 16 Ia.H x.xxx A A High Phase Current Alarm level mode. 17 Ia.L x.xxx A A Low Phase Current Alarm 18 Ib.H x.xxx A B High Phase Current Alarm 5.5 Analog output 19 Ib.L x.xxx A B Low Phase Current Alarm The instrument supports one channel of analog output, and its programmable and 20 Ic.H x.xxx A C High Phase Current Alarm flexible setting of analog items and ranges. 21 Ic.L x.xxx A C Low Phase Current Alarm 22 I.H x.xxx A Any Phase Current High Alarm The detailed analog output items can refer to the analog output comparison table. 23 I.L ... -
Page 24: Frequently Asked Questions And Solutions
Transmission output comparison table 6. Frequently Asked Questions and Solutions 6.1 Communications Transmission output 1) Instrument does not send back data Transfer item First, ensure that the communication setting information of the instrument, such as 0‐20mA 4‐20mA 4‐12‐20mA slave address, baud rate, and verification mode, are consistent with the (0‐5V) (0‐10V) (0‐5‐10V) requirements of the upper computer; if there are multiple instrument communications on site without data return, check whether the connection of the OFF(close function) field communication bus is accurate and reliable, and whether the RS485 converter ... -
Page 25: On The Inaccuracy Of Electric Energy
6.3 On the inaccuracy of electric energy Appendix MODBUS‐RTU Communication Register The electric energy accumulation of the instrument is based on the measurement of Information Table power. First, observe whether the power value of the instrument is consistent with 0x03/0x04 Command data register address: the actual load. The meter supports two‐way electric energy metering. In case of wrong wiring and negative total active power, the electric energy will be accumulated to the reverse active energy, and the positive active energy will not be Address Format Data description Units accumulated. The most common problem in the field is the reverse connection of the incoming and outgoing lines of the current transformer. Look at the signed Primary grid data (Type float) active power of the split phase. If the power is negative, it may be the wrong wiring. The wrong connection of the phase sequence will also cause the abnormal electrical 0000‐0005 energy of the instrument. 0x06 float Phase voltage‐V1 V R 0x08 ... -
Page 26: Extreme Demand Data
0x3E float apparent power‐PF1 R 0144 float L1 Minimum active power kW R 0x40 float apparent power‐PF2 R 0146 float L2 Minimum active power kW R 0x42 float apparent power‐PF3 R 0148 float L3 Minimum active power kW R Neutral line current 014A float Total active power minimization kW R 0x44 ... -
Page 27: Harmonic Data
Harmonic data 024E Int C Phase Current Component 0.1% R 024F Int Load percentage 0.1% R Address Format Data description Units 0250 int L1 Total harmonic distortion rate 0.01% R （HEX） 0251 int L2 Total harmonic distortion rate 0.01% R 200 float Voltage forward component V R 0252 int L3 Total harmonic distortion rate 0.01% R float Voltage negative sequence ... -
Page 28: System Setup Data
0280 Int 7th harmonic content‐V1 0.01% R 02A9 Int 13th harmonic content‐I3 0.01% R 0281 Int 7th harmonic content‐V2 0.01% R 02AA Int 14th harmonic content‐V1 0.01% R 0282 Int 7th harmonic content‐V3 0.01% R 02AB Int 14th harmonic content‐V2 0.01% R 0283 Int 7th harmonic content‐I1 0.01% R 02AC Int 14th harmonic content‐V3 0.01% R 0284 ... - Page 29 0809 ‐‐ 0820 Int #1 Alarm items 0: Ua overload R/W 080A Int Voltage range setting 1: Ua underload 1～690V 2: Ub overload 080B Int Current range settings 1～6A 3: Ub underload 080C Int Interval time between 0： Historical extremes 4: Uc overload extremes 1‐9999：Extreme interval 5: Uc underload time 6: over phase voltage 080D ‐‐‐ 7:Phase undervoltage 8: Uab overload 080E‐080F ...
- Page 30 Numerical test data are consistent 0828 Int #2 Relay working mode Working mode with #1 The information in this document is subject to changes without any further notice. relay 0829 Int #2 Pulse width Same #1 pulse width JIANGSU SFERE ELECTRIC CO., LTD. 082A Int #2 Alarm Project Same as #1 alarm project Add: No.1 Dongding Road, Jiangyin, Jiangsu, China. 082B‐082C P.C: 214437 082D Int #2 Alarm Delay Time Same as #1 Relay Alarm ...
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