N14 TYPE USER`S MANUAL - London Electronics Ltd.
Contents
1. error of energy value in FRAM Bit 7 reserved Bit 6 1 too small voltage for frequency measurement Bit 5 1 too small voltage in phase C Bit 4 1 too small voltage in phase B Bit 3 1 too small voltage in phase C Bit 2 current range 0 1 A 1 5 A pe Bit 1 Bit 0 voltage range 0 0 57 8 0 1 230 1 0 400 Table of 32 bit registers for N14 meter Table 10 16 bit 32 bit S Register Register 5 Description Unit address address 7000 7500 R Voltage of phase L1 V 7002 7501 Current of phase L1 A 7004 7502 R Active power of phase L1 7006 7503 Reactive power of phase L1 Var 7008 7504 R Apparent power of phase L1 VA 7010 7505 R Active power factor of phase L1 7012 7506 R Ratio of reactive power active power of phase L1 7014 7507 R Voltage of phase L2 V 7016 7508 Current of phase L2 A 7018 7509 Active power of phase L2 7020 7510 Reactive power of phase L2 Var 7022 7511 R Apparent power of phase L2 VA 7024 7512 R Active power factor of phase L2 7026 7513 R Ratio of reactive power active power of phase L2 7028 7514 R Voltage of phase L3 V 7030 7515 R Current of phase L3 A 7032 7516 R Active power of phas2. ost nete re ect cns nns 3 Kind of version standard input voltage 9 x 110 190 V tton CUM MA unio Additional requirements without an extra quality inspection certificate with a extra quality inspection certificate acc to customer s Execution only for direct measurement The version code is established by the manufacturer ORDER EXAMPLE The N14 2 2 00 7 code means N14 network parameter meter of N14 type 2 input current 5 A X 5 2 input voltage 3 x 230 400 V 00 standard version 7 delivered with an extra quality inspection certificate 11 MAINTENANCE GUARANTEE The N14 network parameter meter does not require any periodical maintenance In case of some incorrect operations 1 In the period of 12 months from the date of purchase One should take the transducer down from the installation and return it to the Manufacturer s Quality Control Dept If the unit has been used in compliance with the instructions the Ma nufacturer warrants to repair it free of charge 2 After the guarantee period One should turn over the transducer to repair it in a certified service workshop The disassembling of the housing causes the cancellation of the granted guarantee Spare parts are available for the period of five years from the date of purchase Our
3. 55 lt 26 029 o 35 EST 25 5 5 Displayed An At Aon Aof Adt dEF information Default value OFF nor 101 99 0 no Range of see changes table 7 hon hoF 0 120 0 120 0 300 YES no Selection of monitored quantity Table 7 nan Value to calculate valuein Displayed Kind of quantit alarm value percenta register parameter q ae and Ls 4006 8 P 00 off lack of quantity alarm disabled none 01 U_1 voltage phase L1 Un V 02 11 11 In A 03 _1 active power of phase 11 Un x In x cos 0 W 04 1 reactive power of phase 11 Un x In sin 90 var 05 St apparent power of phase L1 Un x In VA 06 PF1 active power factor of phase L1 1 07 U2 voltage phase L2 Un V 08 12 current in phase L2 In A 09 P2 active power of phase L2 Un x In x cos 0 W 10 q2 reactive power of phase L2 Un x In x sin 90 var 17 Table 7 continuation 11 52 apparent power of phase 12 Un x In VA 12 PF2 active power factor of phase 12 1 13 U3 voltage phase L3 Un V 14 13 current in phase L3 In A 15 P3 active power of phase L3 Un x In x cos 0 W 16 q3 reactive power of phase L3 Un x In x sin 90 17 53 apparent power of phase 13 Un x In VA 18 De power factor of 1 19 UA 3 phase mean vo
4. L1 L2 L3 N Eva AL 20 19 18 17 16 15 14 13 12 10 Semi indirect measure ment in a 4 wire network YIOMJOU e ui uonoeuuoo 84 5 10 pue 5 JO ASN ay EL 79119 21 81 61 OZ joeJipu QNO M NN en 1092 98 INO Adang 6 N14 PROGRAMMING 6 1 Frontal panel Display field Index of gt lt gt phase mim quantities y Fields of m m Symbols and units Index of a 3 phase quantities gt deu Dean minimal Po Po we moximal end of alarm lt switching on Erasing Decimal point Value Enter push ESC change push increasing acceptation push push Fig 4 Frontal panel 6 2 Messages after switching the supply on After switching the supply on the meter carries out the display test and displays the name of the N14 meter and the current program version Where n nn is the number of the current program version or the number of a
5. accessible for the operator and suitably marked 4 MOUNTING The meter is adapted to be mounted in a panel by means of holders acc to fig 1 The meter housing is made of a self extinguishing plastics Meter dimen sions 96 x 96 x 70 5 mm One must prepare a hole of 91 05 x 91 0 5 mm in the panel which the thickness should not exceed 6 mm The meter must be introduced from the panel front with disconnected supply voltage At the rear side of the meter there are terminal strips which enable the connection of wires up to 2 5 mm2 After the insertion into the hole fix the meter by means of two holders E 14 96 4 A 96 244 Fig 1 Overall meter dimensions 5 METER DESCRIPTION 5 1 Current inputs All current inputs are galvanically isolated internal current transformers The meter is adapted to co operate with external current transformers Displayed current values and derived quantities are automatically re counted by the quantity of the introduced external transformer ratio Current inputs are defined in the order as 1 Aor 5A 5 2 Voltage inputs Quantities on voltage inputs are automatically recounted by the quantitiy of the introduced external voltage transformer ratio Voltage inputs are defined in the order as 3 x 57 7 100 V 3 x 230 400 V or 3 x 400 690 V 7 5 3 Connection diagrams Di
6. policy is one of continuous improvement and we reserve the right to make changes in design and specifications of any pro ducts as engineering advances or necessity requires and revise the above specifications without notice 14 09
7. 5 Reactive energy two younger bytes 0 4019 0 65535 Status register description below 0 4020 0 15258 Output active energy two older bytes 0 4021 0 65535 Output active energy two younger bytes 0 4022 R 0 15258 Reactive capacitive energy two older bytes 0 4023 0 65535 Reactive capacitive energy two younger bytes 0 avaible the program version 1 05 In prior versions registers 4015 4018 include energy from totalized modules of individual energies Energies are made available in hundreds of watt hours var hours in two 16 bit registers therefore when calculating values of particular energies from registers they must be divided by 10 id Input active energy value of register 4015 65536 value of register 4016 10 kWh Developed reactive energy value of register 4017 65536 value of register 4021 10 kWh Reactive inductive energy value of register 4017 65536 value of register 4018 10 kVarh Reactive capacitive energy value of register 4022 65536 value of register 4023 10 kVarh Status register Bit 15 relay output state 1 On 0 off Bit 14 1 FRAM damaged Bit 13 1 lack of calibration or erroneous calibration Bit 12 1 active calibration Bit 11 reserved Bit 10 1 the interval of power averaging does not elapse Bit 09 1 error of parameter values in FRAM Bit 08 1
8. NETWORK PARAMETER METER N14 TYPE USER S MANUAL 5 o 0 DY APPLICATION coin reorap E Penas a rae rasa 5 5 BASIC REQUIREMENTS OPERATIONAL SAFETY 6 MOUNTING ruat neuter ii 6 METER coords 7 N14 PROGRAMMING eene nennen nennen nnne 12 IRS 485 INTERFACE coi 20 y ERROR CODE Sroa ae at aoaea raa rara are E 26 TECHNICAL 26 ORDER CODES MAINTENANCE AND 30 1 APPLICATION The N14 meter is a programmable digital panel instrument destined for the measurement of 3 phase 3 or 4 wire power network parameters in balanced or unbalanced systems with the simultaneous display of mea sured quantities and digital transmission of their values This network parameter meter enables the control and optimization of power electronic devices systems and industrial installations The N14 meter ensures the measurement of RMS voltage and current active reactive and apparent power active and reactive energy power factors frequency mean active power e g 15 min mean power Voltages and currents are multiplied by given current and voltage ratios of measuring transformers Indications of power and energy take into consideration programmed ratio values Th
9. conditions supply voltage 85 253 V d c or a c 40 400 Hz input signal 0 0 005 1 2 In 0 05 1 2 Un for voltage current 0 0 1 1 2 In 0 0 1 1 2 Un for power factors Pfi tpi frequency 45 66 100 Hz sinusoidal THD lt 8 power factor 1 0 1 ambient temperature 25 23 55 storage temperature 30 70 C relative air humidity 25 95 condensation inadmissible admissible peak factor current 2 voltage 2 external magnetic field 0 40 400 A m short duration overload capacity 5 s voltage inputs 2 Un max 1000 V current inputs 10 In work position any warm up time 5 min Additional errors in of the basic error from frequency of input signals lt 50 from ambient temperature changes lt 50 10 for THD gt 8 lt 100 Standards fulfilled by the meter Electromagnetic compatibility noise immunity acc to EN 61000 6 2 interference emission acc to EN 61000 6 4 Safety requirements acc to EN 61010 1 standard e isolation between circuits basic installation category pollution degree 2 maximal working voltage in relation to earth 600 V kat II 300 V kat III altitude above sea level lt 2000 m E 10 ORDER CODES Table 9 NETWORK PARAWETERMETER X XOX Input current In Input voltage phase phase to phase Un 1 3X 230 400 2 3 400 690 V
10. ctor 1 0 1 1 2 0 1 2 2 Tangens 1 2 0 1 2 41 2 0 1 2 296 between Uf 180 180 480 180 e 6 x 0 596 Input active energy 0 99 999 999 9 kWh e 1 Developed active 5 99999 999 9 kWh e 1 Reactive inductive 0 99 999 999 9 kVarh 1 u Reactive capacitive 99 999 999 9 kVarh 1 energy Ku ratio of voltage transformer 1 4000 Ki ratio of current transformer 1 10000 Caution For a correct current measurement the voltage presence of a value higher than 0 05 Un is required at least for one phase 26 Power consumption in the supply circuit lt 6VA in the voltage circuit lt 0 05 VA in the current circuit lt 0 05 VA Display field 3 x 3 LED digits 14mm height red colour Relay output relay voltageless NOC contacts load capacity 250 V 0 5 A Serial interface RS 485 addres 1 247 mode 8N2 8E1 801 8N1 rate 4 8 9 6 19 2 38 4 kbit s Impulse energy output output of O C type passive of class A acc to EN 62053 31 supply voltage 18 27 V current 10 27 mA Impulse constant of the O C type output 5000 imp kWh independently of set Ku Ki ratios Protection degree ensured by the housing from the frontal side IP 40 from terminal side IP 10 Weight 0 3 kg Dimensions 96 x 96 x 70 5 mm Panel cut out dimensions 91 05 x 91 0 5 mm Reference conditions and rated operating
11. custom made version Caution If at the moment of the start the message Err Cal lub Err EE appears one must contact an authorized service Fig 5 Message after meter start 6 3 Working modes Change of or displayed lt quantities MEASUREMENT mode Display of mean values together with minimum and maximum a a Erasing Erasing of min of max Introduce the code E or Ca eo Selection of SET parameters or 30 sec or 30 sec Meter parameters mode Setting of parameters acc to the table 4 Communication parameters mode Setting of parameters acc to the table 5 def Y manufacturer s Alarm parameters mode Setting of parameters acc to the table 6 def Y manufacturer s def Y manufacturer s parameters parameters parameters ES or or or 30 sec 30 sec 30 sec E e 30 sec Selection quantity Selection quantity 30 sec Selection quantity 30 sec tomodify to modify to modify ED or LES CX Cx orta 30 sec Change of quantity Change of quantity 30 sec Change of quantity 30 sec values values values E o or EN or fa Fig 6 Working modes of N14 meter 6 4 Parametr preview Quantities are displayed in the measuremen
12. dex showing the load character is highlighted The exceeding of the upper indica tion range is signaled on the display by upper horizontal dashes however the lower range exceeding is signaled by lower horizontal dashes The mean active power 15 min PAu is displayed after a full interval of the 15 min mean time In case when the full interval of time is not expired the message Err is displayed The display of errors was described in the chapter 8 The alarm relay switching on is signaled by the AL index highlighting 14 6 5 Setting of parameters The entry in the programming mode is carried out by pressing and hol ding during ca 3 sec and 4 pushes The entry in the programming mode is protected by the access code In case when there is no code the program transits into the programming option The in scription SET in the first column and symbols of respective levels P C Aare displayed Fig 7 Menu setup 6 5 1 Setting of meter parameters Select the mode P in options by Jor 4 pushes and confirm the choice by the lt push Table 4 555 8 g 52 528 58 Parameter 3 3 52 35 Bra 558 Qt ce name 29 5 558 525 oc Displayed gee tU Eno dEF information Default value 0 1 1 0 999 1 10000 1 4000 YES no YES no YES no 15 Followi
13. e L3 7034 7517 Reactive power of phase L3 Var 7036 7518 R Apparent power of phase L3 VA 7038 7519 R Active power factor of phase L3 7040 7520 Ratio of reactive power active power of phase 13 7042 7521 R Mean 3 phase voltage V 7044 7522 R Mean 3 phase current A 7046 7523 3 phase active power 7048 7524 R 3 phase reactive power 7050 7525 3 phase apparent power 7052 7526 Mean active power factor 7054 7527 Ratio of mean reactive Power mean active power 7056 7528 R Frequency Hz 7058 7529 R Phase to phase voltage L1 L2 V 7060 7530 R Phase to phase voltage L2 L3 V 7062 7531 R Phase to phase voltage L3 L1 V Table of 32 bit registers for N14 meter 7064 7532 Mean phase to phase voltage Table 10 V 7066 7068 7533 gt Mean 15 minute active power Ww 7070 7072 7534 Reserved 7535 Reserved Mean minimal 3 phase voltage 7074 Mean maximal 3 phase voltage 7076 Mean minimal 3 phase current 7078 Mean maximal 3 phase current 7080 Minimal 3 phase active power 7082 Maximal 3 phase active power 7084 Minimal 3 phase reactive power 7086 Maximal 3 phase reactive power 7088 Minimal 3 phase apparent power 7090 Maximal 3 phase apparent power 7092 Minimal active power factor 7094 Maximal active powe
14. e value of each measured quantity can be transmitted to the master system through the RS 485 interface The relay output signals the exceeding of the chosen quantity and the impulse output can be used for the consumption control of the 3 phase active energy The meter is fixed to the panel by means of screw holders 2 METER SET The meter set includes N14 meter 1 pc user s manual 1 pc guarantee card 1 pc holder to fix the meter in a panel 2 pcs When unpacking please check the completeness of the set E 3 BASIC REQUIREMENTS AND OPERATIONAL SAFETY In the security scope the meter meets the requirements of EN 61010 1 standard Remarks concerning the operator safety e All operations concerning the meter installation and connections should be carried out by qualified skilled personnel and national regulations for the prevention of accidents must be observed e Before connecting the meter to the power one must check the correctness of connections e Do not connect the meter to the network through an autotransformer e Before the removal of the meter housing one must disconnect its supply and all measuring circuits e The housing removal from the meter during the guarantee contract causes its cancellation e The meter fulfils requirements concerning the electromagnetic compatibility in the industrial environment e In the building installation should be a switch or a circuit breaker situated near the meter easy
15. g 3100 W Calculation rated 3 phase active Power x 230 V x 5 A 3450 W 3450 W 100 3450 W 100 3800 W 3100 W Therefore Aon 110 AoF 90 Set Monitored quantity Kind of alarm nor Aon 110 AoF 90 7 INTERFACE RS 485 Set of the N14 meter serial link parameters e identifier meter address 1 247 e baud rate 4 8 9 6 19 2 38 4 kbit s e working mode Modbus RTU e information unit 8N2 8E1 801 8N1 maximal response time 1000 ms e Implemented functions 03 16 17 03 register readout 16 register write 17 device identification Manufacturer s settings address 1 baud rate 9600 bit s RTU 8N2 mode Register map of the N14 meter In the N14 meter data are placed in 16 and 32 bit registers Process variables and meter parameters are placed in the address area of registers in the way dependent on the variable value type fe Bits in the 16 bit registers are numbered from the youngest to the oldest 60 615 32 bit registers include numbers of float type in the IEEE 754 standard Table 8 Address range Type of value Description _ Integer Value placed in one 16 bit register N 16 bits Description of registers are included in the table 9 Registers for write and readout Float Value placed in two successive 16 bit 7000 7133 2x 16 bits registers Registers contain the same data as 32 bit registers fr
16. ltage Un V 20 LA 3 phase mean current In A 21 3 phase active power 3 x Un x In x cos 0 W 22 q 3 phase reactive power 3x Un x In x sin 90 var 23 S 3 phase apparent power 3 x Un x In VA 24 active power 1 25 F frequency 100 Hz 26 U12 phase to phase voltage L1 L2 Un V 27 U23 phase to phase voltage L2 L3 Un V 28 U31 phase to phase voltage L3 L1 Un V 29 U4A phase to phase mean voltage Un V 30 PAu active mean power 13 x Un x In x cos 0 W 31 tg1 tgQ factor of phase L1 T 32 tg2 teo factor of phase L2 1 33 tg3 tgQ factor of phase L3 1 34 tga 3 phase factor 1 Un In rated values of voltages and currents b nor c On d OFF Contact Contact Relay enabled Relay disabled Aof Aon Measured quantity Aon gt Aof 1 Relay disabled Aon Aof Measured quantity Aon lt Aof Relay enabled Relay disabled Relay disabled Aof Aon Measured quantity Contact state Relay enabled enabled Relay disabled Aof Aon Measured quantity Fig 8 Alarm types a b normal c disabled d enabled Remained types of alarms hon always enabled hof always disab led Example of alarm setting Set the alarm of nor for Aon gt Aof for the monitored 3 phase active Power P Version 5 A 3 x 230 400 V Alarm enabled after exceeding 3800 W alarm disabled after decreasin
17. ng values are set by means of pushes Posi tion of the decimal digit is selected by the push the digit value is increased by the _ push The active position is signalled by the cursor The value is accepted by the push or abandoned by pres sing the lt push During the acceptation one can check if the value is contained in the range In case of the value setting beyond the range the meter remains in the parameter edition mode however the value is set on the maximal value if the value is too high or on the minimal value if the value is too small Caution to display and set 4 and 5 digit parameters t_U t_l two lower display rows are used 6 5 2 Setting of communication parameters In options select the mode and confirm the choice by the _ lt push Table 5 5 5 8 8 S 3 8 Parameter t 3 E 5 3 name g 2 2 5 ct Displayed Adr trY information Default 1 8 2 9 6 k no Range of 8n2 8 1 4 8 9 6 changes 1 24 got 19 2 38 4k YFS no 6 5 3 Setting of alarm parameters In options select the mode A and confirm the choice by the 4 push Table 6 x o x Ss 5 5 o o c 5 5 Ses 1383 330 Parameter 9 S 9 es cos oc on
18. om the area 7500 Registers for readout _ Float Value placed in one 32 bit register 1900 398 32 bits Description of registers are included in the table 10 Registers for readout accessible from the program version 1 04 Table of 16 bit registers for N14 meter Table 9 Operations Range Description Default 4000 RW 0 999 Access code to parameters 0 4001 RW 1 10000 Ratio of the current transformer 1 4002 RW 1 4000 Ratio of the voltage transformer 1 4003 RW 0 1 Erasing of watt hour meters 0 4004 RW 0 1 Erasing of 15 minute active Power PAV 0 4005 RW 0 1 Erasing of min and max 0 4006 RW 0 1 30 Quantity on the relay output 0 4007 RW 0 4 Output type 0 nor 1 on 2 oFF 3 hon 4 hoFF 4008 RW 0 120 Upper value of alarm switching relay 101 4009 RW 0 120 Lower value of alarm switching relay 99 4010 RW 0 300s Delay of alarm switching 0 4011 RW 0 247 Address in MODBUS network 1 4012 RW 0 3 Transmission mode 0 gt 8n2 1 gt 8e1 2 gt 801 3 gt 8 1 0 4013 RW 0 3 _ Baud rate 0 gt 4800 1 gt 9600 2 gt 19200 3 gt 38400 1 4014 RW 0 4 Acceptation of above transmission parameters 0 4015 R 0 15258 active energy two older bytes 0 Table 9 4016 0 65535 Active energy two younger bytes 4017 R 0 15258 Reactive energy two older bytes 0 4018 0 6553
19. r factor 7096 R R R R R R R R R R R R R Minimal mean 3 phase reactive power factor active power factor ratio 7098 Maximal mean 3 phase reactive power factor active power factor ratio 7100 Minimal frequency 7102 Maximal frequency 7104 Minimal mean phase to phase voltage 7106 Maximal mean phase to phase voltage 7108 Minimal mean 15 minute active power 7110 2422422 2 gt Maximal mean 15 minute active power 7112 7557 3 phase active energy number of the register 7557 overfills zeroed after exceeding 99999999 9 kWh 3 phase active energy counter totting to 99999 9 kWh 3 phase reactive inductive energy number of 7116 7558 the register 7559 overfills zeroed after exceeding 99999999 9 kVarh 3 phase reactive inductive energy counter 7118 7559 R totting to 99999 9 kVarh kWh 3 phase reactive inductive energy number of the 100 7120 7560 R register 7559 overfills zeroed after exceeding MVarh Developed 3 phase active energy counter totting 7122 7561 R to 99999 9 kWh kVarh 3 phase reactive capacitive energy number of 100 7124 7562 the register overfills 7563 zeroed after exceeding MVarh 99999999 9 kVarh an 3 phase reactive capacitive energy counter 7126 7563 R totting up to 99999 9 kVarh kVarh 7128 7564 Shift angle between vol
20. rect measurement in a 3 wire network Semi indirect measure ment in a 3 wire network Supply RS 485 85 250 OUTimp 1 LI LT 20 19 18 17 16 15 14 13 12 10 14 85 485 85 250 V eine A OUT imp 20 19 18 17 16 15 14 13 1210 N14 xX10Mjeu e ui 64 ay yee SI y VIN 440Mjeu OL cLH EL VL SE 9 41 8 61 02 9JIM E SJGUJOJSUEJ pue ac Nm juauno JO esn ay WINO gep sy Adding Jusweunsesw apu 85 485 85 250 AL enpe a OUlimp Direct measurement 20 19 18 17 16 15 14 1312 10 4 wire network N14 119 8765 4 321
21. t mode acc to the set tables The pressure of the push left or push top causes the transition between displayed quantities The preview of 3 phase values mean minimal and maximal is acces sible after pressing the acceptation lt Enter push During the preview of these values the pressure of the left push cancels minimal values however the 4 top push maximal values Accessible measuring quantities Basic quantities Table 2 Sym o PRRP w var tg kWh values w1 PT 51 Enp ERE displayed in row2 _ U2 U23 i2 2 02 52 2 tg2 input output row3 03 31 13 03 53 tga Power power kVarh kVarh Hz W 15 min f1 PAI EnQ EnQ inductive capacitive Min mn max max Mean minimal maximal quantities indexes 3L min max are highlighted Table 3 Symbol indexes are highlighted VLN VLL A Ww Var VA Values 1 Umean Umean between Imean Pmean Smean PFmean displayed phases phases phase Sphase Sphase Sphase phase phase in row 2 min min min min min min min min row3 max max max max max max available from the program version 1 05 At capacitive load during the display of reactive power the in
22. tage and current of phase 1 9 7130 7565 Shift angle between voltage and current of phase 2 9 7132 7566 Shift angle between voltage and current of phase 3 9 available from the program version 1 05 In prior versions registers 7556 7559 include energies from totalized modules of industrial energies In case of errors the value 1 20 is written in appropriate registers 25 8 ERROR CODES Messages about errors can appear during the meter operation Reasons of these errors are presented below Err when the voltage or current is too low during the meter work toi f below 10 Un In below 10 Un The full time intervat of power averaging PAu does not elapse 9 TECHNICAL DATA Measuring ranges and admissible basic errors are presented in the table 11 Table 11 Indication range Measuring range Basic M d val easured value K Kel K K I L1 L2 L3 2 enor Current 9 15 11 13 0 00 9 99 0 02 6 0 5 Voltage L N 0 0 289 kV 2 9 480 V 0 5 Voltage L L 0 0 500 kV 10 830 V 190 45 0 70 0 Hz 45 0 100 0 2 0 2 Active power 999 MW 0 00 W 2 64 kW 1 4 W ale elo 1 999 MW 2 64 kW Reactive power 999 Mvar 0 00 var 2 64 kvar 1 4 var o 196 999 2 64 kvar D Apparent power 0 00 VA 999 MVA 1 4 2 64 190 Power fa
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