POWER NETWORK PARAMETER METER
Contents
1. of phase quantities c e e 1 Exit from modes without parameter recording if Time mode Parameters mode Setting of the date Setting of parameters es dl RE and current time acc to table 5 dig analogue and off on J Fig 7 Working modes of N13 parameter meter Fig 8 Setup menu 6 5 Setting of the date and time Mode time Parameter name Settings The entry into the programming mode proceeds through the holding of the enter key during ca 3 s The entry into the pro gramming mode is protected by the access code The code 15 introduced for all parameters In case of lack of code the program transits at once in the program ming option The SET inscription column 1 and symbols of each levels T S O are displayed Table 2 Default value Change range 2002 2082 After entry into the SETUP procedure we choose the t mode by means of the key top and accept by means of the key enter yyy y mm Where yyyy year mm month dd day hh gt mm enter Ss hh hour mm minutes SS seconds We settle values by means of keys top and left i e we choose the posi tion ofthe decimal number with the key left and the value of the number with the key top The active position is signalled by the cursor The val2. Ao_n 0 1 33 Quantity on the analogue output AolL 120 0 120 Lower threshold of the input quantity AolH 120 0 120 Upper threshold of the input quantity AoOL 20 0 20 Lower threshold of the output scaling mA AoOH 20 0 20 Upper threshold of the output scaling mA YeAr 2002 2084 Year MonDay Month 100 day HourMin Time in the format Hour 100 minutes ALm State of the relay output En 0 Cancellation of watt hour meters Table 7 Register Quantity name address 7500 L1 phase voltage 7501 L1 phase current 7502 L1 phase active power 7503 L1 phase reactive power 7504 L1 phase apparent power 7505 Active power factor of L1 phase 7506 Ratio of reactive to active power of L1 phase 7507 L2 phase voltage 7508 L2 phase current 7509 L2 phase active power 7510 L2 phase reactive power 7511 L2 phase apparent power 7512 L2 Active power factor of L2 phase 7513 Ratio of reactive to active power of L2 phase Table 7 continuation L3 phase voltage L3 phase current L3 phase active power L3 phase reactive power L3 phase apparent power Active power factor of L3 phase Ratio of reactive to active power of L2 phase reserved Mean phase current Active 3 phase power Reactive three phase power Apparent three phase power Mean active powe
3. 31 devices one must install a PD51 repeater in series which enlarges the possibilities of the network by 31 successive address numbers and increases the installation distance by ca 1000 m 6 PROGRAMMING OF N 13 6 1 Frontal panel Marker of network type Fields of Fields of phase units and quantities symbols Field of three phase quantities Cancellation Decimal point Value increasing Acceptation key key ESC change key key ENTER Fig 5 Frontal panel 6 2 Messages after switching the supply on After switching the supply on the meter carries out the test of displays and displays the current version of the program 15 Where h x xx is the number of the current version of the program or the number of the custom made execution Fig 6 Message after switching the supply on Note If at the moment of the start the message UnCx x 1 U A appears on the displays one must contact an authorized service 6 3 Description of the user s interface In the measuring mode quantities are displayed according settled tables The quantity in the tables and accessible parameters depend on the kind of connected power network The pressure of the key top causes the transition between displayed single phase quantities The pressure of the key left causes the transition between displayed three phase quantities The display of phase and phase to phase quantities is independent 6 4 Accessible measuring qu
4. The N13 panel power network parameter meter is a digital instrument destined to measure all basic parameters in three phase three wire or three phase four wire balanced or unbalanced electrical power networks with the simultaneous display of measured quantities and the digital transmission of their values and their conversion into an analogue standard signal It can be employed in data acquisition networks or can be used as a single meter instead of many different meters used till now ammeters voltmeters wattmeters warmeters frequency meters phase meters and others This parameter meter enables the control and optimization of power electronic devices systems and industrial installation This parameter meter ensures the measurement of rms voltage and current active reactive and apparent power active reactive and ap parent energy power factors frequency relative harmonics content of voltage and current e g 15 minutes mean active power Voltages and currents are multiplied by given voltage and current ratios of measuring transformers Power and energy indications take into account the value of programmed rations The value of each measured quantity can be transmitted to the master system through the RS 485 interface The LPCon program 15 destined for the configuration of the N13 meter One must connect the meter through the PD10 converter to the PC computer The value of each chosen quantity can be additionally transmitted by mean
5. for the Ao_n parameter AolL 78 AolH 96 AoOL 4 AoOH 20 case of using external transformers ratios are taken in consideration in the calculation formula E g TrU 230 100 P Table 5 Quantity name Voltage of L1 phase Current of L1 phase Active power of L1 phase Reactive power of L1 phase Apparent power of L1 phase Active power factor of L1 phase Ratio of reactive to active power of L1 phase CO NID oO AJO N gt Voltage of L2 phase Current of L2 phase Active power of L2 phase Reactive power of L2 phase Apparent power of L2 phase Active power factor of L2 phase Ratio of reactive to active power of L2 phase Voltage of L3 phase Current of L3 phase Active power of L3 phase Reactive power of L3 phase Apparent power of L3 phase Active power factor of L3 phase Ratio of reactive to active power of L3 phase Mean phase current Mean 3 phase power Reactive 3 phase power Apparent 3 phase power Mean active power factor Mean ratio of reactive to active power Frequency L1 L2 phase to phase voltage L2 L3 phase to phase voltage L3 L1 phase to phase voltage Mean power e g 15 min 1 7 RS 485 INTERFACE In executions with interface the meter has the possibility to communicate with a PC through the RS 485 line In the N13 meter data are ins
6. overload 5 sec voltage inputs 2 Un max 1000 V current inputs 10 In working position any warm up time 5 minutes Additional errors in of the basic error from frequency of input signals lt 50 from ambient temperature changes lt 50 10 C Electromagnetic compatibility immunity acc EN 61000 6 2 emission acc EN 61000 6 4 Safety requirements acc EN 61010 1 insulation ensured by the housing dual insulation between circuits basic installation category II pollution degree 2 maximal working voltage in relation to earth 600 V a c p 10 EXECUTION CODES AND ORDERING WAY Table 10 NETWORK PARAMETER METER N13 X X X X X XXX Input current In 5A X 5 OTt OTT e pd dcs a Needs c dd 9 Input phase phase to phase voltage Un 3 x 57 7 100 V 3 x 230 400 V 3 x 400 690 V on order Current analogue output without analogue output 0 with a programmed output 20 20 1 Digital output without interface ssssseseeernennnnnnee 0 with RS 485 interface 1 Display tl endo aa 1 2 Kind of execution standard custom made Acceptance test without an extra quality inspection 8 with an extra quality inspection certificate acc user s agreement After agreeing by
7. the manufacturer The execution numbering will be made by the manufacturer Coding example The N13 2 2 1 1 2 00 7 code means input range 5 A input voltage 3 x 230 400 V with a programmed current analogue output 20 20 mA RS 485 interface green digits standard execution with an extra quality inspection certificate 11 MAINTENANCE AND GUARANTEE The N13 parameter meter does not require any periodical maintenance In case of some incorrect unit operations 1 From the shipping date during the period given in the annexed guarantee card One should take the instrument down from the installation and return it to the Manufacturer s Quality Control Dept If the instrument has been used in compliance with the instructions the Manufacturer guarantees to repair it free of charge 2 After the guarantee period One should turn over the instrument to repair 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 ten years from the date of purchase The Manufacturer s policy is one of continuous improvement and we reserve the right to make changes in design and specifications of any products as engineering advances or necessity requires and revise the above specification without notice pe SALES PROGRAM MEASUREMENT DIGITAL and BARGRAPH PANEL METERS CONTROL MEASURING TRANSDUCERS m ANALOG PANEL METERS DI
8. E Tab 5 Switch on value in of the 120 0 0 120 0 nominal range 5 B 5 o m 5 a Switch off value in of the Y 120 0 0 120 0 nominal range Delay in the alarm action s 0 100 Quantity on the continuous output E Tab 5 Lower val ue of the input range in 120 0 0 120 0 of the nominal range Upper value of the input range in 120 0 0 120 0 of the nominal range Analogue output Lower value of the output range mA 20 0 20 Upper value of the output range mA 20 0 20 Energy Cancelati In case of the off or zero quantity value in these quantities other common output parameters will not be displayed 21 Outputs are active if a value different from zero off was assigned to them Relay and analogue outputs are not connected with the displayed quantities on the page In case of negative numbers the introduction of minus follows after the cursor transition on the position 4 thousands number and pressing the key top Example of programming Set the continuous output on the input range 180 220 V of the U1 voltage on the output range 4 20 mA Check the percentage participation of the signal in the whole nominal range E g 230 400 V 230 V 100 230 100 180 x 220 x 96 _ 180 V 100 p 220 V 100 xi 230V X1 78 of the input range X2 96 of the input range We assign U1
9. N INSTRUMENTS RECORDING m ANALOG and DIGITAL CLAMP ON METERS m INDUSTRIAL and HOUSEHOLD CONTROLLERS m CHART AND PAPERLESS RECORDERS m POWER CONTROL UNITS and INVERTERS m WATT HOUR METERS m AUTOMOTIVE DASHBOARD INDICATORS m ACCESSORIES FOR MEASURING INSTRUMENTS SHUNTS m MEASURING SYSTEMS ENERGY HEAT CONTROL m CUSTOM MADE MEASURING ELECTRONIC DEVICES WE ALSO OFFER OUR SERVICES IN THE PRODUCTION OF m ALUMINIUM ALLOY PRESSURE CASTINGS PRECISION ENGINEERING AND THERMOPLASTICS PARTS m PRESSURE CASTING DIES AND OTHER TOOLS m VARIOUS ELECTRONIC SUB ASSEMBLIES MSD TECHNOLOGY QUALITY PROCEDURES According to 150 9001 and ISO 14001 international requirements All our instruments have CE mark For more information please write to or phone our Export N13 07C LUMEL Lubuskie Zaktady Aparat w Elektrycznych LUMEL S A ul Sulechowska 1 65 022 Zielona G ra Poland Tel 48 68 3295 100 exchange Fax 48 68 3295 101 e mail lumel lumel com pl http www lumel com pl Export Department Tel 48 68 329 53 02 or 53 04 Fax 48 68 325 40 91 e mail export lumel com pl
10. POWER NETWORK PARAMETER METER N13 SERVICE MANUAL POWER NETWORK PARAMETER METER N13 SERVICE MANUAL CONTENTS 1 APPLICATION and PROPERTIES m 2 METER SET 2 2 eier 3 BASIC REQUIREMENTS SAFETY INFORMATION 4 4 ASSEMBLY 2 na is 6 5 METER DESCRIPTION 7 5 1 Measured and calculated quantities by the meter 7 5 2 Inputs outputs nennen 8 5 2 1 Current inputs wd 5 2 2 Voltage non none 9 5 2 3 Analogue output 13 5 2 4 Relay output 2 13 5 2 5 4Interfaco iir e dex eri teta Le dec ERE canard 13 6 PROGRAMMING OF N13 eene 14 6 1 Frontal panel nen e 14 6 2 Messages after switching the supply off 14 6 3 Description of the user s 15 6 4 Accessible measuring 15 6 5 Setting of the date and 16 6 6 Setting of meter parameters 17 6 7 Setting of meter output parameters 18 7 RS 485 INTERFACE 8 ERROR CODES eerte nnne 9 TECHNICAL DATA 10 EXECUTION CODES 11 MAINTENANCE AND 29 1 APPLICATION and PROPERTIES
11. antities Accessible phase quantities for a four wire network Sjueuno eseud JO GHL TABN THEI THOIF eseud JO THOUS soDeyo eseyd o aseud ul THOU 023 us soeu Jamod e noe 0 TGI T63 810128 eAnov PFI aseyd 51 siamod eAnoeei al eseyd Pi 03 53 PF Sjueuno i 02 52 PFE 162 13 ul L1 L2 ug L3 13 Accessible phase quantities for a three phase network Phase to phase voltages uie ueg 021 Phase currents ie 13 L1 L2 L3 Three phase and mean quantities for 3 and 4 wire networks M ayy ul queso iN aajoeay eAnov ENP ENG Jamod an pe sejnuiu G F PAU an pe Jamod eAnoees 10 08 Jamod ueeyy Jamod juasedde 5 PF TG Jamod ueayy AYL Pu jueuno ues l 3L Supply V connection J TEST AN Display change 4 MEASUREMENT Display change line 4 mode line 1 3 of 3 phase quantities t
12. direct measurement with the use of 2 current transformers and two or three voltage transformers in a three phase network 10 Connection diagrams of the meter in a four wire network Supply RS 485 Analogue 85 250V AL enpe output HE Fig 3a 20 19 18 17 16 15 14 13 12 10 Direct measurement in a four wire network N13 L1 L2 L3 Supply AL RS 485 Analogue 85 250V M GND B A Output IET ELITSE Fig 3b 20 19 18 17 16 15 14 13 12 10 Semi indirect measu rement in a four wire N13 network Supply RS 4g5 Analogue 85 250V AL output 1 20 19 18 17 16 15 14 13 12 10 N13 Fig 3c Indirect measurement with the use of three current transformers and two or three voltage transformers in a four wire network 5 2 3 Analogue outputs We can convert quantities from the table 1 into a standard analogue cur rent signal in the range 20 mA 0 20 mA The scaling of the measured quantity and also the value of the current signal are realised 5 2 4 Relay output The internal relay signals the exceeding state of
13. erted in 16 and 32 bit registers Process variables and meter parameters are placed in the address space of registers in a way depending on the type of the variable va lue In the 16 bit register bits are numbered from the youngest to the oldest b0 b15 32 bit registers include numbers of the float type in the IEEE 745 standard The register map is divided into the following areas Address range Value type Description 4000 4021 Integer 16 bit Value inserted in one 16 bit register The register description is included in the table 6 Registers for recording and readout 7000 7068 Float 32 bit The value is placed in two succesive 16 bit registers Registers are only for readout 7500 7696 Float 32 bit Value inserted in one 32 bit register The register description is included in the table 7 Registers for readout Table 6 Address Range Description 4000 1 9000 Ratio of the current transformer 4001 1 4000 Ratio of the voltage transformer 4002 0 1 Choice of network type 3 or 4 wire 4003 0 1 Cancellation of mean power 4004 0 1 2 3 Interval of mean power O off 1 15 2 30 3 60 4005 0 1 Synchronization with RTC 4006 0 15 Display brightness 4007 0 1 33 Quantity on the relay output 4008 120 0 120 Lower switch on value Table 6 continuation A_oF 120 0 120 Upper switch on value A_dt 0 100 Delay of the alarm switch on
14. ower consumption supply circuit voltage circuit current circuit Supply Display field Outputs analogue output relay output Serial interface Transmission protocol Meter reaction to decays and supply recovery Protection degree ensured by the housing frontal side terminal side Weight Overall dimensions Panel cut out dimensions lt 12 VA lt 0 5 VA 0 1 VA 85 250 V d c or a c 40 400 Hz 4 x 4 LED digits 10 mm high red or green displays 1 analogue programmed output 20 0 20 mA accuracy 0 296 1 relay output voltageless make contacts load capacity 250 V a c 0 5 A a c RS 485 MODBUS ASCII and data and meter state preservation during supply decays battery support work continuation after supply recovery IP 40 IP 10 4009 96 x 96 70 5 mm 91 0 5 x 91 05 Reference conditions and nominal operating conditions Input signal 0 0 02 1 2 In 0 0 02 1 2 Un for voltage current frequency power 0 0 02 1 2 In 0 0 07 1 2 Un for Pf and t factors frequency 15 45 65 500 Hz sinusoidal current THD lt 8 power factor 1 0 1 ambient temperature 0 23 55 C relative air humidity 25 95 no condensation storage temperature 20 70 C supply 85 253 V d c or a c 40 400 Hz admissible peak factor current 2 voltage 2 external magnetic field 0 40 400 A m short duration
15. programmed ranges of the chosen quantity Set of quantities for the analogue and relay output Phase voltages Quantity U1 U2 U3 Lower range value for outputs 1 V 930 kV Table 1 Upper range value for outputs 1 V 930 kV Phase to phase voltages U12 U23 U31 2 V 1 6 MV 2 V 1 6 MV Phase currents 11 12 13 I 0 01A 45 kA 0 01A 45 kA Active power P1 P2 P3 P 220 0 220 GW 220 0 220 GW Reactive power Q1 Q2 Q3 Q 220 0 220 GVar 220 0 220 GVar Apparent power 51 52 53 5 220 0 220 GVA 220 0 220 GVA Power factor PF1 PF2 PF3 PF 1 00 0 1 000 1 00 0 1 000 Power factor tg1 192 193 tg 99 9 0 99 99 99 9 0 99 99 Frequency Multiplier Giga f Kilo and Mega 5 2 5 Interface The meter can communicate with the main system by means of the RS 485 interface with the MODBUS transmission protocol 0 20 100 Hz 0 20 100 Hz is shown on the display simultaneously by lighting of the symbol i The converter RS 485 RS 232 e g PD10 type from LUMEL S A or the RS 485 interface card is necessary to connect the meter with a computer N13 meter nr n n lt 32 suppr A N13 Meter Fig 4 Connection of meters with RS 485 interface to a PC Note One can extend the network up to 247 devices After each
16. r factor Mean ratio of active to reactiver power Frequency L1 L2 phase to phase voltage L2 L3 phase to phase voltage L3 L1 phase to phase voltage reserved Mean power e g 15 minutes Date Day Month Year Time Hour Minute Seconds Active energy Reactive energy Apparent energy THD for phase voltage L1 THD for phase voltage L2 THD for phase voltage L3 THD for phase current L1 Table 7 continuation 46 THD 12 THD for phase current L2 47 THD 13 THD for phase current L3 48 72 B H1 H25 Ut Harmonics of phase voltage L1 73 97 H1 H25 02 Harmonics of phase voltage L2 98 122 er H1 H25 U3 Harmonics of phase voltage L3 123 149 SR Hi Harmonics of phase current L1 150 174 am Hi Harmonics of phase current L2 175 198 Hi Harmonics of phase current L3 199 Current in the neutral wire 200 Consumed active energy 201 K Returned active energy 202 Inductive reactive energy 203 E Capacity reactive energy 204 Inductive reactive power 205 Capacitive reactive power 8 ERROR CODES Messages about errors can appear during the meter work The causes of these errors are presented below Err when the voltage or current is too small during the measurement Pfi tpi below 7 Un In f below 7 Un THD U Un lt Un 10 Un lub Un gt Un 12 Un 55 Hz l
17. s of a standard current signal the relay output can be used to signal exceedings of chosen quantities Measurements are carried out by the sampling method of voltage and current signals 2 METER SET The meter set includes N13 parameter meter 1 pc service manual 1 pc guarantee card 1pc holders to fix the meter in the panel 2 pcs 3 BASIC REQUIREMENTS SAFETY INFORMATION Symbols located in this service manual mean WARNING must acquaint with this before connecting the meter The non obser Warning of potential hazardous situations Especially important One vance of notices marked by these symbols can occasion severe injuries of the personnel and the damage of the meter CAUTION meter is made easier One must take note of this when the meter is Designates a general useful note If you observe it handling of the working inconsistently to the expectations Possible consequences if disregarded In the security scope the meter meets the requirements of the EN 61010 1 standard Remarks concerning the operator safety 1 2 General The N13 parameter meter 15 destined to be mounted on a panel Non authorized removal of the required housing inappropriate use incorrect installation or operation creates the risk of injury to personnel or damage to equipment For more detailed information please see the service manual All operations concerning transport installation and commissioning as
18. t f lt 45 Hz THDI 1 lt 10 In e The full time interval of the Pau power averaging is not expired E 9 TECHNICAL DATA Measuring ranges and admissible basic errors are presented in the table 8 Measured quantity Range Basic error Table 8 Remarks U voltage 57 7100 V Ku 1 230 400 V Ku 1 400 690 V Ku 1 dla Kuz1 1 6 MV 0 2 m v 0 1 range Ku 1 4000 max 1 6 MV lj current 1 000 A Ki 1 5 000 A Ki 1 dla Ki 1 45 0 2 m v 0 1 range Ki 1 9000 max 45 kA Pi active power Pay mean active power Active energy EnP 0 0 999 9 W for Ku 1 Ki 1 220 GW 0 5 m v 0 2 range Si apparent power Apparent energy 5 0 0 999 9 for Ku 1 Ki 1 220 GVA 0 5 m v 0 2 range Qj reactive power Reactive energy EnQ 0 0 999 9 Var for Ku 1 Ki 1 220 GVar 0 5 m v 0 2 range Pfi active power factor 1 00 0 00 1 000 1 m v 2c Pf Power factor P S toi factor ratio of reactive power to active power 99 9 0 99 9 1 m v 20 error in the range 99 9 0 99 9 f frequency 20 0 500 0 Hz 0 5 m v THD Ui li 0 5 100 5 m v 20 Where Ku voltage transformer ratio Ki current transformer ratio m v measured value less significant display digit p 10 Un Un lt 12 Un In gt 10 In 47 52 Hz P
19. ter housing of 96 x 96 x 70 5 mm dimensions is made of a sell extinguishing plastics At the rear side of the meter there are terminal strips which enable the connection of up to 2 5 mm conductors One must prepare 91 x 91 05 mm hole in the panel which the thi ckness should not exceed 6 mm The meter must be introduced from the panel front with the switched off supply After its insertion fix the meter by means of two holders 96 6 5 Fig 1 NA13 meter dimensions max 6 5 METER DESCRIPTION 5 1 Measured and calculated values by the meter The N13 parameter meter enables the measurement and visualisation of over 30 power energy quantities Measured quantities Single phase parameters Three phase parameters Phase voltages 01 02 03 Phase to phase voltages U12 U23 U31 Line currents 11 12 13 Mean line current Active power P1 P2 P3 P Reactive power inductive capacitive Q1 02 03 Q QL QC Apparent power S1 S2 S3 5 Active energy total developped received EnP EnP_i EnP_e Reactive energy inductive capacitive EnQ EnQ L EnQ_C Apparent energy EnS Power factor cosp PF1 PF2 PF3 PF Power factor tgp tg1 tg2 tg3 Tg Current T THD_11 12 THD 13 Voltage T THD U1 THD U2 THD US Frequency 15 minutes mean acti
20. ue is accepted by the key enter or cancelled by pressing ESC After the parameter dd day the successive pressure causes the transition to set hours and minutes The second counter 15 reset to zero after the minutes after a successive pressure of the key enter For a precise measurement of time one must wait till the full minute and press enter 6 6 Setting of meter parameters Mode Parameters setup Table 3 Parameter name Displayed Assumptive quantity quantity Default setting Y n Input 3 4 Current transformer ratio 1 9000 Voltage transformer ratio 1 4000 Cancellation of mean power Y n Mean power interval min 15 30 60 Mean power synchronization Y n Display brightness 0 15 Change of the access code 0000 9999 The entry into the Parameter mode is protected by the access code if it is different from zero In case of the code 0000 the inquiry about the password is omitted If the access code is different from zero and the user does not introduce the correct code only the review of parameters is possible In case of introducing a value over the range after accepting the value is set on the upper limit range E 6 7 Setting of meter output parameters Mode Output Table 4 Displayed Assumpti quantity ve value Parameter name Address of the meter in the network Baud rate kbd Mode of the protocol Quantity on the relay output 1
21. ve power Current in the neutral wire 5 2 Inputs outputs Interface 5 2 1 Current inputs current inputs all galvanically insulated internal current transformers The value on current inputs is automatically calculated in relation to the introduced external current transformer ratio Current inputs are defined in the order as 1 Aor 5A 5 2 2 Voltage inputs The quantity on voltage inputs is automatically calculated in relation to 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 Connection diagrams of the meter in a three phase network Supply RS 485 Analogue 85 250V Y A Outpu Pl IL I 20 19 18 17 16 15 14 13 12 10 N13 L2 L3 Fig 2a Direct measurement in a three phase network E Supply RS 485 Analogue 85 250V Lo B A Output 20 19 18 17 16 15 14 13 12 10 L1 L2 L3 Fig 2b Semi indirect measurement in a three phase network Supply RS 485 Analogue 8s 250Ve AL enoa a output 5 20 19 18 17 16 15 14 13 12 10 Fig 2c In
22. well as maintenance must be carried out by qualified skilled personnel and national regulations for the prevention of accidents must be observed According to this basic safety information qualified skilled personnel are persons who are familiar with the installation assembly commissioning and operation of the product and who have qualifications necessary for their occupation Transport storage Please observe the notes on transport storage and appropriate handling Observe the climatic conditions given in Technical Data 3 Installation The meters must be installed according to the regulation and instructions given in this service manual Ensure proper handling and avoid mechanical stress Do not bend any components and do not change any insulation distances Do not touch any electronic components and contacts e Meters contain electrostatically sensitive components which can easily be damaged by inappropriate handling e Do not damage or destroy any electrical components since this might endanger your health e Before connecting the meter to the power one must check the correctness of the mains cable connection e Before the removal of the meter housing one must disconnect the supply and the measuring circuits e The removal of the housing during the guarantee period causes its cancellation 4 ASSEMBLY The N13 meter is adapted to be mounted into panels and cubicles by means of 2 holders according the fig 1 The me
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