ND20 Manual - London Electronics Ltd.
Contents
1. 7158 7579 R Active power L2 max W 7160 7580 R Active power L3 min W 7162 7581 R Active power L3 max W 7164 7582 R Reactive power L1 min var 7166 7583 R Reactive power L1 max var 7168 7584 R Reactive power L2 min var 7170 7585 R Reactive power L2 max var 7172 7586 R Reactive power L3 min var 7174 7587 R Reactive power L3 max var 7176 7588 R Apparent power L1 min VA 7178 7589 R Apparent power L1 max VA 7180 7590 R Apparent power L2 min VA 7182 7591 R Apparent power L2 max VA 7184 7592 R Apparent power L3 min VA 7186 7593 R Apparent power L3 max VA 7188 7594 R Power factor PF L1 min 7190 1595 R Power factor PF L1 max 7192 7596 R Power factor PF L2 min 1194 1597 R Power factor PF L2 max 7196 7598 R Power factor PF L3 min 7198 1599 R Power factor PF L3 max 7200 7600 R Ratio of reactive active power L1 min 7202 7601 R Ratio of reactive active power L1 max 7204 7602 R Ratio of reactive active power L2 min 7206 7603 R Ratio of reactive active power L2 max 7208 7604 R Ratio of reactive active power L3 min 7210 7605 R Ratio of reactive active power L3 max 7212 7606 R Phase to phase voltage L4 2 min V 7214 7607 R Phase to phase voltage L4 V 7216 7608 R Phase to phase voltage 2 min V 7218 7609 R Phase to phase voltage 2 max V 7220 7610 R Phase to phase voltage L3 min V 7222 7611 R Phase to phase voltage L34 max V 7224 7612 R Mean 3 phase voltage min V 7226 72. After agreeing with the manufacturer Example of Order When ordering please respect successive code numbers The code ND20 2 2 1 1 00 E 1 means ND20 meter of network parameters of ND20 type 2 current input In 5 A x 5 2 input voltage phase phase to phase Un 3 x 230 400 V 1 with programmable analog output 1 supply voltage 85 253 V a c d c 00 standard version E all descriptions and user s manual in English 1 with an extra quality inspection certificate 33 11 MAINTENANCE AND GUARANTEE The ND20 meter does not require any periodical maintenance In case of some incorrect operations After the dispatch date and in the period stated in the guarantee card One should return the instrument to the Manufacturer s Quality Inspection Dept If the instrument has been used in compliance with the instructions we guarantee to repair it free of charge The disassembling of the housing causes the cancellation of the granted guarantee After the guarantee period One should turn over the instrument to repair it in a certified service workshop Our 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 to revise the above specifications without notice 34 ND20 09 01 20 09 2010
3. f below 10 Uhn ln below 10 In bAd Freq When measuring harmonics and THD if the frequency value is beyond the interval 48 52 Hz for 50Hz i 58 62 for 60 Hz Err bat is displayed when the battery of the internal RTC clock is used up The measurement is carried out after switching the supply on and every day at midnight One can disable the message by the push button The disabled message remains inactive till the renewed switching of the meter on Err CAL Err EE are displayed when the meter memory is damaged The meter must be sent to the manufacturer Err PAr are displayed when operating parameters in the meter are incorrect One must restore manufacturer s parameters from the menu level or through RS 485 One can disable the message by the push button Err Enrg are displayed when energy values in the meter are incorrect One can disable the message by the push button Incorrect energy values are reset Err L2 L3 error of phase sequence one must interchange the connection of phase 2 and phase 3 or lower overflow The measured value is smaller than the lower measuring quantity range mE or NEC upper overflow The measured value is higher than the upper measuring quantity range or measurement error 29 9 TECHNICAL DATA Measuring ranges and admissible basic errors Table 12 Measured value Indication range Measuring
4. 1 On 0 off 0 1 230 V Table 11 Address Address of 16 bit of 32 bit Ania Description Unit registers registers 7000 7500 R Voltage of phase L1 V 7002 7501 R Current in phase L1 A 7004 7502 R Active power of phase L1 W 7006 7503 R Reactive power of phase L1 var 7008 7504 R Apparent power of phase L1 VA 7010 7505 R Power factor PF of phase L1 7012 7506 R Ratio of reactive power active power of phase L1 7014 7507 R Voltage of phase 12 V 7016 7508 R Current in phase L2 A 7018 7509 R Active power of phase L2 W 7020 7510 R Reactive power of phase L2 var 7022 7511 R Apparent power of phase L2 VA 7024 7512 R Power factor PF 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 in phase L3 A 7032 7516 R Active power of phase L3 W 7034 7517 R Reactive power of phase L3 var 7036 7518 R Apparent power of phase L3 VA 7038 7519 R Power factor PF of phase L3 7040 7520 R Ratio of reactive power active power of phase L3 7042 7521 R Mean 3 phase voltage V 7044 7522 R Mean 3 phase current A 7046 1523 R 3 phase active power W 7048 7524 R 3 phase reactive power var 7050 7525 R 3 phase apparent power VA 7052 7526 R Mean power factor PF 7054 7527 R Mean ratio of reactive power active power 7056 7528 R Frequency Hz 7058 7529 R Phase to phase voltage V 7060 7530 R Phase to phase voltage V 7062 7531 R Phase to phase voltage L5 V 7064 7532
5. The removal of the meter housing during the guarantee contract period may cause its cancellation The ND20 meter is destined to be installed and used in industrial electromagnetic environment conditions One must remember that in the building installation a switch or a circuit breaker should be installed This switch should be located near the device easy accessible by the operator and suitably marked 4 INSTALLATION The ND20 meter is adapted to be fixed on a panel by means of holders The fitting way is presented on the fig 1 Housing overall dimensions 96 x 96 x 77 mm At the rear side of the meter there are screw terminal strips which enable the connection of external wires with a cross section up to 2 5 One must prepare a 92 5 92 5 9 mm cut out in the panel The material thickness which the panel is made from should not exceed 15 mm Insert the meter from the frontal panel side with the disconnected supply voltage After the insertion into the hole fix the meter by means of holders Fig 1 Meter fitting Fig 2 Meter overall 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 measuring current transformers Displayed current values and derivative quantities are automatically recoun in relation to the introduced external current transfo
6. 15 minutes walking window record synchronized every 15 minutes with the clock 1 measurement synchronized every 15 minutes 4005 RW 0 3 with the clock 0 2 measurement synchronized every 30 minutes with the clock 3 measurement synchronized every 60 minutes with the clock Number of the measured harmonic 0 THD 1 all harmonics are successively 4006 RW 0 22 measured and placed in registers 7660 7780 2 21 0 harmonic number with energy 4007 RW 0 1 Storage way of minimum and maximum values 0 0 without errors 1 with errors Way to calculate reactive power 0 0 5 k 4008 RW 0 1 1 Q U 1 sin ZU I 0 i l k harmonic number k 21 for 50 Hz k 18 dla 60 Hz Way to calculate reactive energy 4009 RW 0 1 0 inductive and capacitive energy 0 1 positive and negative energy Display backlit O disabled 1 60 backlit time in 4010 RW 0 61 seconds since the push button pressure 61 61 always enabled Erasing of watt hour meters 4011 RW 0 4 0 without changes 1 erase active energy 0 2 erase reactive energy 3 erase energy of harmonics 4 erase all energy 4012 RW 0 1 Erasing of mean active power Pay 0 4013 RW 0 1 Erasing of the averaged power archive 0 4014 RW 0 1 Erase min and max 0 24 Quantity the alarm relay output EUIS SEES code acc to the table 6 Output type 0 n on 1 n oFF 2 oFF epe NE d 4 H on 5 H oFF
7. 5 4 Setting Date and Time Select the dAtE mode in options and approve the choice by the push button Seconds are reset after setting hour and minute values Table 7 Lp Parameter name Designation range Remarks description Manufacturer s value 1 Hour minute t H 0 23 0 59 0 00 2 Month day td 1 12 1 31 1 01 3 Year ty 2001 2100 2001 19 6 6 Configuration of THD Measurement Harmonics and Energy for the Harmonic The meter has 3 work modes related to the THD and harmonic calculation When setting the parameter of the harmonic number tHd the meter measures every 1 second only the THD value for currents and voltages the result is exposed on the display and expressed in registers in percentages Energy of harmonics is reset and particular harmonics include the error value 1 20 All the meter measures harmonics from 2 up to 21 for 50 Hz frequency from 2 up to 18 for 60 Hz frequency Energy of harmonics is reset 2 21 measurement of the selected harmonic value every 1 second the result is exposed on the display and in basic units V A in registers Energy for the given harmonic is counted up The switching of the harmonic number or the change of voltage or current ratio resets energy for harmonics 6 7 Archive Active Power Profile The ND20 meter is equipped with an archive allowing to store up to 9000 measurements of mean active power Mean active power
8. Pay is archived with a 15 30 60 minutes interval of time synchronized with the real time clock In case of operation in the 15 minutes walking window mode the archiving is performed in the same way as for the 15 minutes interval of time fig 11 The direct access to the archive is for 15 records including the date time and value placed in the range of addresses 1000 1077 The position of the first oldest archived sample is placed in the register 1000 however the position of the last archived sample youngest is placed in the register 1001 the value of the first record from 15 available records placed in registers 1003 1077 is written in the register 1002 The write of the first read out record value 1 9000 causes the data updating of 15 records for readout In registers in which samples were not already been written are 1e20 values The archive is organized in the shape of a circular buffer After writing the 9000 th value the next overwrites the oldest with number 0 and the successive the next with number 1 etc If the value of the register 1000 is higher than 1001 that means that the buffer was overflowed one time at least Eg the value 15 in the register 1000 and 14 in the register 1001 means that there were already more than nine thousand samples and oldest samples are from the record 15 up to 9000 next from the record 1 to the youngest record with number 14 The change of the current or voltage ratio ki
9. R Mean phase to phase voltage V 7066 7533 R 3 phase 15 30 60 minutes active Power P1 P2 P3 W 7068 7534 R Harmonic 01 THD U1 V 7070 1535 R HarmonicU2 THD U2 V 7072 1536 R Harmonic U3 THD U3 V 1074 1537 R Harmonic 11 THD 11 Al 7076 7538 R Harmonic I2 THD 12 Al 7078 7539 R Harmonic I3 THD I3 A 96 7080 7540 R Cosinus of angle between U1 and 11 7082 7541 R Cosinus of angle between U2 12 7084 7542 R Cosinus of angle between U3 and I3 7086 7543 R 3 phase mean cosinus 7088 7544 R Angle between U1 and 11 7090 7545 R Angle between U2 12 7092 7546 R Angle between U3 i I3 7094 7547 R Current in neutral wire calculated from vectors A Imported 3 phase active energy number of overflows in 100 MWh 7096 7548 R register 7549 reset after exceeding 99999999 9 kWh Imported 3 phase active energy counter totting up to kWh Se diana R 99999 9 kWh 7100 7550 R Exported 3 phase active energy number of overflows in 100 MWh register 7551 reset after exceeding 99999999 9 kWh Exported 3 phase active energy counter totting up to kWh 2 i P 99999 9 kWh 7552 R 3 phase reactive inductive energy number of overflows in 100 7104 register 7553 reset after exceeding 99999999 9 kVarh Mvarh 7553 R 3 phase reactive inductive energy counter totting up to kva
10. bit registers include numbers of float type in IEEE 754 standard Sequence of 3210 bytes the oldest is transmitted as the first 21 Table 8 Address range ied Description Integer Archive of the averaged power profile The table 9 includes the 1000 1077 16 bits DUE register description record 4000 4053 Integer The value is placed in one 16 bit register The table 10 includes the 16 bits register description Registers for write and readout Float Value placed in two successive 16 bit registers Registers include 7000 7121 2x16 bits the same data as 32 bit registers from the area 7500 7659 Registers for readout Sequence of bytes 3 2 1 0 Float Value placed in one 32 bit register The table 11 includes the 7500 7659 32 bits register description Registers for readout Float Value placed in two successive 16 bit registers Registers include 7800 8038 2x16 bits the same data as 32 bit registers from the area 7660 7779 Registers for readout Sequence of bytes 3 2 1 0 Float Value placed in one 32 bit register The table 11 includes the 7660 7779 32 bits register description Registers for readout Table 9 Address of 16 bit OP Description registers 1000 R Position of oldest archived mean power 1001 R Position of youngest archived mean power 1002 RAW __ First available rec
11. quantities energy THD harmonics date rows 1 2 3 10 symbols indicating the display of power factor power tangent and THD row 4 11 units of displayed values 12 symbols of digital data transmission 13 multipliers of basic values 14 symbols of alarm switching on occurrence 15 symbols of harmonic value THD display 16 symbols of energy flow 17 symbols of min max quantities 18 symbols of quantity affiliation to respective phase 19 symbols of power energy character 20 symbol of 3 phase quantity display 6 2 Messages after Switching the Supply on After switching the supply on the meter performs the display test and display the nae meter name rated current and voltage the current program version and next displays the measured values 3 D t LOC ut mo where n nn is the number of the current program version the number of the custom made version Fig 6 Message after starting the meter Caution If on displays the message Err Cal or Err EE appears one must contact the service shop 6 3 Monitoring of Parameters In the measuring mode quantities are displayed acc to settled tables The pressure of the J push button left or gt push button right causes the transition between displayed quantities The pressure of the push button Enter causes the transition between mean and additional displayed values The pressu
12. range L1 L2 L3 Basic error Current 1 5A 0 00 60 kA 0 02 6 A e o 0 2 L1 L3 Voltage L N 0 0 1 04 MV 2 9 276 V e 0 2 Voltage L L 0 0 1 92 MV 10 480 V e 0 5 Frequency 47 0 63 0 Hz 47 0 63 0 Hz eo 0 2 Active power 9999 MW 0 00 W 1 65 kW 1 4 W e o 0 5 9999 MW od Reactive power 9999 Mvar 0 00 var 1 65 kvar 1 4 var e 0 5 9999 Mvar Apparent power 0 00 VA 9999 MVA 1 4 1 65 kVA eo 0 5 Power factor 1 0 1 1 0 1 eo 2 Tangent 1 2 0 1 2 1 2 0 1 2 e o 2 Cosinus 1 1 1 1 195 180 180 180 180 e o o 0 5 Imported active 0 99 999 999 9 kWh 0 5 energy Exported active 0 99 999 999 9 kWh 0 5 energy Reactive inductive 0 99 999 999 9 t 0 5 96 energy kVarh Reactive 0 99 999 999 9 t 0 596 capacitive energy kVarh THD 0 400 0 400 e o 5 Depending on the set tr_U ratio ratio of the voltage transformer 0 1 4000 0 and tr ratio ratio of the current transformer 1 10000 Caution For the correct current measurement the presence of a voltage higher than 0 05 Un is required at least in one of the phase Power input in supply circuit in voltage circuit in current circuit lt 6VA lt 0 05 VA lt 0 05 VA Display field Relay output Analog output dedicate
13. 034 RW 0 2359 Hour 100 Minutes 0 4035 RW 101 1231 Month 100 day 101 4036 RW 2009 2100 Year 2009 4037 RW 0 1 Record of standard parameters together with the 0 reset of energy and min max averaged power 4038 RW 0 15258 Imported active energy two older bytes 0 4039 RW 0 65535 Imported active energy two younger bytes 0 4040 RW 0 15258 Exported active energy two older bytes 0 4041 RW 0 65535 exported active energy two younger bytes 0 4042 RW 0 15258 Reactive inductive energy two older bytes 4043 R 0 65535 Reactive inductive energy two younger bytes 4044 R 0 15258 Reactive capacitive energy two older bytes 0 4045 R 0 65535 Reactive capacitive energy two younger bytes 0 4046 R 0 15258 Imported harmonic active energy two older bytes 0 4047 R 0 65535 Imported harmonic active energy two younger bytes 0 4048 R 0 15258 Exported harmonic active energy two older bytes 0 4049 R 0 65535 Exported harmonic ye ae two younger 0 4050 R 0 65535 Status register description below 0 4051 R 0 65535 Serial number two older bytes 4052 R 0 65535 Serial number two younger bytes 4053 R 0 65535 Program version 100 In parenthesis suitably is placed resolution or unit Energy is made available in hundreds of watt hours var hours in double 16 bit register and for this reason one must divide them by 10 when calculating values of particular energy from registers ie Imported active energy register 4038 val
14. 230 V Instantaneous maximum import of power 1 5 MW Calculate rated 3 phase active power of the ND20 meter P 3x 230 V x 2500A 500 5 A 1 725 MW 500 3450 W 100 90 of ordered power rated power 90 0 1 MW 1 725 MW 52 1 of the rated meter value rounding down The ordered hourly power energy for consumption 1 MWh 4 quarters 900 MWs 90 810 MWs Remaining 10 at maximum power import would be used in time 900 MWs 1 5 MW 60s 18 Imported power Ordered power energy 1 5 MW Sigo nih c A E Apad 1MW his 100 96 90 96 90 0 8 00 00 State of contacts Relay BIMBI cue i qui timui Relay 0 disabled Ordered power ALon 90 0 ALof 89 9 Time of delay Aldt 7 0 sec Fig 10 Measurement of used ordered 15 minutes active power consumption synchronized with the clock with alarm set on a 90 consumption Set Monitored quantity P ord Kind of alarm n on ALon 90 0 ALoF 89 9 Tr 1 500 Syn 60 Time delay ALdt 0 or 240 s An example of the parameter value utilization of ordered active power to switch the alarm on is presented on the fig 10 The time delay is set on 0 sec In the calculated example for remaining 10 of ordered power at the maximum power consumption devices could still work during 60 sec without exposing customers to fines when setting the time delay ALdt on 60 sec the alarm would not be enabled 6
15. 6 AL1 3 4017 RW Bur Lower alarm switching value of the ratek input range 990 00 4018 RW Upper alarm switching value of the ratek input range 1010 00 Delay of the alarm switching for quantity AL_n 4019 RW 0 900 s P ord rgister 4015 35 the delay occurs only 0 when the alarm is switched on 4020 RW 0 1 Alarm signaling support 0 4021 RW 0 1 35 Quantity the continuous output 1 code acc to 24 the table 6 4022 RW 04 Continuous output propa 0 20 mA 1 4 20 0 A 4023 RW 1 440 0 1440 Lower value of the input range in ool of the rated 0 oo input range 23 4024 RW 1440 0 1440 Upper value of the input range in of the rated 1000 oo input range 4025 RW Et E Lower output range value of the output 10 uA 0 4026 RW 1 2000 10 uA Upper output range value of the output 10 uA 2000 Manual switching of the analog output 1 0 normal work 1 set value from the register 4026 0 2 set value from the register 4027 4028 RW 0 24 mA Analog output value when error 24 4029 RW 1000 20000 Number of impulses for the impulse output 5000 4030 RW 1 247 Address in the MODBUS network 1 4031 RW 0 3 Transmission iue FORE 1 gt 8e1 2 gt 801 0 Baud rate 0 gt 4800 1 gt 9600 2 gt 19200 4032 RW 0 3 3 gt 38400 1 4033 RW 0 1 Update the transmission parameter change 0 4
16. 613 R Mean 3 phase voltage max V 7228 7614 R Mean 3 phase current min A 7230 7615 R Mean 3 phase current max A 7232 7616 R 3 phase active power min W 7234 7617 R 3 phase active power max W 7236 7618 R 3 phase reactive power min var 7238 7619 R 3 phase reactive power max var 7240 7620 R 3 phase apparent power min VA 7242 7621 R 3 phase apparent power max VA 7244 7622 R Power factor PF min 7246 7623 R Power factor PF max 7248 7624 R Ratio of mean 3 phase reactive active power min 7250 7625 R Ratio of mean 3 phase reactive active power max 7252 7626 R Frequency min Hz 1254 1627 R Frequency max Hz 7256 7628 R Mean phase to phase voltage min V 7258 7629 R Mean phase to phase voltage max V 7260 7630 R Mean active power min W 7262 7631 R Mean reactive power max W 7264 7632 R Harmonic U1 THD U1 min V 7266 7633 R Harmonic U1 THD U1 max V 7268 7634 R Harmonic U2 THD U2 min V 7210 7635 R Harmonic U2 THD U2 max V 7212 7636 R Harmonic U3 THD U3 min V 7214 7637 R Harmonic U3 THD U3 max V 27 7276 7638 R Harmonic I1 THD 11 min Al 7278 7639 R Harmonic 11 THD 11 max Al 7280 7640 R Harmonic I2 THD 12 min Al 7282 7641 R Harmonic I2 THD 12 max Al 7284 7642 R Harmonic I3 THD I3 min Al 7286 7643 R Harmonic 13 THD 13 max Al 7288 7644 R Cosinus of angle between U1 i 11 min 7290 7
17. 645 R Cosinus of angle between U1 i 11 max 7292 7646 R Cosinus of angle between U2 12 min 1294 1647 R Cosinus of angle between U2 i 12 7296 7648 R Cosinus of angle between U3 113 min 7298 7649 R Cosinus of angle between U3 13 7300 7650 R Mean 3 phase cos min 7302 7651 R Mean 3 phase cos max 7304 7652 R Angle between U1 i 11 min 7306 7653 R Angle between U1 111 max 7308 7654 R Angle between U2 112 min 7310 7655 R Angle between 02112 3 7312 7656 R Angle between i I3 min 7314 7657 R Anlgle between U3 I3 max i 7316 7658 R Current in neutral wire min A 7318 7659 R Current in neutral wire max A 7800 7660 R U1 harmonic 2 96 7838 7679 R U1 harmonic 21 7840 7680 R U2 harmonic 2 1878 7699 R U2 harmonic 21 7880 7700 R U3 harmonic 2 7918 7719 R U3 harmonic 21 7920 7720 R 11 harmonic 2 7958 1739 R I1 harmonic 21 7960 7740 R 12 harmonic 2 7998 1759 R 12 harmonic 21 8000 7760 R 13 harmonic 2 8038 7779 R 13 harmonic 21 96 8040 7780 R Consumed ordered power In case of a lower exceeding the value 1 20 is written in however after an upper exceeding or error occurrence the value 1e20 is written 28 8 ERROR CODES During the meter operation messages about errors can occur Reasons of errors are presented below Err1 when the voltage or current is too small when measuring Pfi tggi cos THD harmonic below 10 Un
18. 8 1 0 1 25 23 55 C 30 70 C 25 95 condensation inadmissible NN 0 40 400 A m 2 Un max 1000 V 10 In any 5 min CR2032 31 Additional errors in of the basic error from frequency of input signals from ambient temperature changes for THD gt 8 Standards fulfilled by the meter Electromagnetic compatibility noise immunity noise emissions Safety requirements according to EN 61010 1 standard isolation between circuits installation category pollution level maximum phase to earth voltage for supply and measuring circuits for remaining circuits altitude above sea level lt 50 lt 5096 10 C lt 100 acc to EN 61000 6 2 acc to EN 61000 6 4 basic Hl 2 300 V 50V 2000 m 32 10 ORDERING CODES Table 13 Meter of network parameters ND20 X X X X XX X Current input In 1 A X 1 5 A X 5 2 Voltage input phase phase to phase Un 3 x 57 7 100 V 1 3 x 230 400 V 2 Analog current output without analog output 0 with programmable output 0 4 20 mA 1 Supply voltage 85 253 V d c or a c 40 400 Hz 1 20 40 V d c or a c 40 400 Hz 2 Kind of version standard 00 custom made XX Language Polish P English other X Acceptance tests without extra quality requirements 0 with an extra quality inspection certificate 1 acc to customer s requirements X m
19. Alarm types a b normal c disabled d enabled types of the alarm H on always enabled H oFF always disabled AL1 3 in this mode the alarm quantity must be from the range 0 7 When the alarm appears on whichever phase the relay will be enabled and the suitable symbol will be lighted AL1 phase 1 AL2 phase 2 AL3 phase 3 It will be disabled only when all alarms disappear Alarms operate in the n on mode with identical hysteresis thresholds ALof and ALon for each phase The alarm condition withdraw is signaled by the pulsation of the alarm symbol regardless of the set support value of the alarm signaling The blanking of the signaling support follows after pressing and push buttons during 3 sec Example no 1 of alarm setting Set the alarm of n on type for the monitored quantity P 3 phase active power version 5 A 3 x 230 400 V Switching the alarm on after exceeding 3800 W switching the alarm off after decreasing 3100 W Calculate rated 3 phase active power x 230 5 3450 W 3450 W 100 3450 W 100 3800 W ALon 3100 W ALoF It appears ALon 110 96 ALoF 90 Set Monitored quantity P Kind of alarm n on ALon 110 ALoF 90 0 Example no 2 of alarm setting Set the alarm of earliest warning about the possibility to exceed the ordered 1 MW power on the level 9096 at the hourly accounting Measuring current transformer 2500 5 A voltage
20. D1 Displayed row 2 ihn energy energy Uh2 V Ih2 A values THD2 THD2 energy reactive reactive row 3 positiva 3hegative Uh3 V Ih3 A THD3 THD3 Li THD kWh L1 THD I Displayed symbols kWh Lo THD I THD L3 THD C THD L3 THD L2 THD imported Uh1n exported Ih1n cos g1 year Displayed Tow2 harmonic Grane 9 harmonic Ih2nx cos g2 month values TOW active 34 active Ih3n energy Uh3n energy cos o3 day Harmonic voltage current of L1 L2 L3 phases for n harmonic Displayed quantities in the field 8 fig 5 Table 2 Displayed A Var VA PF tg W symbols Displayed values xP xs PF t 3 phase in the row 4 tian lin 15 min or 3 phase 3 phase 3 phase 3 phase 3 phase 3 phase 30 min or 60 min Backlit symbols C Hz Displayed values Consumption of in the row 4 ordered power 5 3 phase hour minutes frequency in 15 30 or 60 minutes time 10 The exceeding of the upper indication range is signaled on the display by upper horizontal lines however the exceeding of the lower range is signaled by lower horizontal lines In case of averaged power measurement 2P3 phase Single measurements are carried out with a 15 seconds quantum Suitably to the 15 min 30 min 60 min selection 60 120 or 240 measurements are averaged After starting the meter or the power erasing the first value will be calculat
21. METER OF NETWORK PARAMETERS ND20 TYPE Em ms L USER S MANUAL CONTENTS APPEIGA TON nn X 3 2 METER SET M 3 3 BASIC REQUIREMENTS AND OPERATIONAL SAFETY 3 4 INSTALLAT ON 4 METER DESCRIPTION an GU ar 5 6 ND20 sa 8 Te RS 485 INTERFACE san 21 8 ERROR GOD ES 29 9 TECHNICAL DATA teas 30 10 ORDERING CODES nene torno iue cvi kid cn cin c e 33 1 APPLICATION The N20D meter is a digital programmable panel meter destined for the measurement of 3 phase 4 wire network parameters in balanced and unbalanced systems with the simultaneous display of measured quantities and digital transmission of their values The meter enables the control and optimization of power electronics devices systems and industrial installation operations The meter ensures the measurement of rms values of voltage and current active reactive and apparent power active reactive energy power factors frequency 15 30 60 minutes mean active power archive of power profile THD and harmonic measurements Additionally the current value in the neutral wire is calculated Voltages and currents are multiplied b
22. by the push button Table 3 ltem Parameter Desi Range Notes description Manufac name gnation turer s value 1 Introduction of SECU oFF 0 without code 0 the access 1 60000 code 2 Ratio of the tr 1 10000 1 current transformer 3 Ratio of the tr_U 0 1 4000 0 1 voltage transformer 4 Synchroniza Syn 19 15 Synchronization of mean active 15 tion of mean 30 60 15 15 minutes walking window record active power synchronized with the clock every 15 minutes c_15 measurement synchronized with the clock every 15 minutes c_30 measurement synchronized with the clock every 30 minutes c_60 measurement synchronized with the clock every 60 minutes 5 Number of the nhAr tHd ALL THD tHd measured 2 21 ALL successive calculations of harmonics harmonic THD inserted in registers 13 2 21 harmonic number in this mode the active energy is calculated 6 Storage of erLi oFF on oFF storage of only correct values from on minimum and the measuring range maximum on storage of also error occurrences in values with measurements values in registers 1620 and errors 1e20 7 Way to t trGLE sInUs trGLE TrGle CO VS reactive power k sinus 1 sin ZU 1 i l k harmonic number k 21 for 50 Hz k 18 for 60 Hz 8 Way to En_q CAP slGn cAP induct
23. d display LCD 3 5 relay voltageless NO contacts load capacity 250 V 0 5 A AC1 current 0 4 20 24 mA load resistance lt 250 Q resolution 0 01 of the range basic error 0 296 30 Serial interface RS 485 Energy impulse output Constant of O C type output impulse Protection grade ensured by the casing from frontal side from terminal side Weight Overall dimensions address 1 247 mode 8N2 8E1 801 8N1 baud rate 4 8 9 6 19 2 38 4 kbit s transmission protocol Modbus RTU response time 1000 ms requests about archive response time 750 ms remaining requests output of O C type NPN passive of class A acc to EN 62053 31 supply voltage 18 27V current 10 27mA 5000 20000 imp kWh independently of set tr_U ratios IP 65 IP 20 0 3 kg 96 x 96 x 77 mm Reference and rated operating conditions supply voltage input signal power factor ambient temperature storage temperature relative humidity admissible peak factor current intensity voltage external magnetic field short duration overload 5 s voltage inputs current inputs operating position preheating time Battery of the real time clock 85 253 V d c or a c 40 400 Hz 20 40 V d c or a c 40 400 Hz 0 0 005 1 21 0 05 1 2U for current voltage 0 0 1 1 21 0 0 1 1 20 for power factors Pfi toi frequency 45 63 Hz sinusoidal THD lt
24. ed after 15 seconds since the meter switching on or erasing Till the time to obtain all active power samples the value of averaged power is calculated from already measured samples The current in the neutral wire li is calculated from phase current vectors The value of consumed ordered power can be used for a previous warning against the exceeding of ordered power and to escape of fines related with it The consumption of ordered power is calculated on the base of time interval set for the synchronization of the mean active power and the value of ordered power section 6 5 1 the consumption example is presented in the section 6 5 3 The alarm switching on is signaled by the lighting of the AL1 inscription in the mode AL1 3 of AL1 AL2 AL3 inscriptions The end of alarm duration at the alarm signaling support switched on is indicated by the pulsation of the AL 1 inscription in the mode AL 1 3 of AL1 AL2 AL3 inscriptions 11 6 4 Operating Modes Supply Display of minimum Switching on Change and maximum value of displayed basic quantities Change of displayed mean quantities min max eS 3 sec Erasing of alarm co or 30 sec support Monitoring of parameters lt Ge co or 30 sec Selection C2 or 30 sec of SEt parameters Par out ALr dAtE Meter parameters mode Output parameters Alarm parameters mode Parameters acc to the Parameters acc to the Paramete
25. he acceptation the value insertion possibility in the range is checked In case when the value is set beyond the range the meter remains in the parameter edition mode however the value is set on the maximum value when the value is too higher or on the minimum value when the value is too lower 14 Select the out mode in options and approve the choice by the push button 6 5 2 Setting of Output Parameters Table 4 ltem Parameter name Desi Range Notes description Manufac gnation turer s value 1 Quantity on the An_n table 6 OFF continuous output code acc to the table 6 2 Type of continuous An_A 0 20 4 20 The selection 4 20 causes the 0 20 output switching on of the minimum output current limitation on the level ca 3 8 mA 3 Lower value of the input AnlL 144 0 144 0 in ofthe rated quantity value 0 range 4 Upper value of the input AnlH 144 0 144 0 96 of the rated quantity value 100 0 range 5 Lower value of the output AnOL 0 00 24 00 inmA 0 range 6 Upper value of the output AnOH 0 00 24 00 inmA 20 range 7 Output operation mode Antr nor Operating mode of the nor AnOL continuous output AnOH nor normal work AnoOL set value AnOL AnOH set value AnOH 8 Output value at error AnEr 0 24 in mA 24 9 Number of impulses lon 5000 20000 Number of impulses for 1 kWh 5000 10 Address in MODBUS Adr 1 247 1 networ
26. ive and capacitive energy cAP calculate slGn positive and negative energy reactive energy 9 Display backlit diSP oFF 1 60 off disabled on enabled 1 60 time in on on seconds of backlit support since the push button pressure 10 Erasing of En 0 no EnP no lack of actions EnP erasing of active no watt hour Enq energy Eng erasing of reactive energy meters ALL EnH erasing of harmonic energy ALL erasing of all energy 11 Erasing of PA 0 no yES yES erasing of power no mean active power 12 Erasingof PArO no yES yES erasing of archive no mean active power archive 13 Ordered power PAor 0 144 0 Ordered power for forecasting the power 100 0 consumption in of the rated value 14 Manufacturer s dEf no yES Restoration of manufacturer s parameters of no parameters the group The automatic erasing of energy is carried out for active energy when changing voltage or current ratio for reactive energy when changing voltage or current ratio the way of reactive power calculation for energy of harmonics when changing voltage or current ratio when changing the measured harmonic number Values are set by means of 2 and LA 2 push buttons however the position of the set digit is selected by means of push buttons The active position is signaled by the cursor The value is accepted by the push button and resigned by the pressure of the push button During t
27. k 11 Transmission mode trYb 8n2 8e1 801 8n2 8n1 12 Baud rate bAUd 4 8 k 9 6 9 6 19 2 38 4 13 Manufacturer s dEf no yES Restoration of manufacturer s no parameters parameters of the group 6 5 3 Setting of Alarm Parameters Select the ALr mode in options and approve the choice by the push button Table 5 Item Parameter name Desi Range Notes description Manufac gnation turer s value 1 Quantity in the alarm AL n Table 6 P output code acc to the table 6 2 Alarm type AL t n on n oFF Fig 9 n on on oFF Hon HoFF AL 1 3 3 Lower value of the input ALoF 144 0 144 0 in 9o of the rated quantity value 99 range 4 Upper value of the input ALon 144 0 144 0 in 96 of the rated quantity value 101 range 15 5 ALdt 0 delay of the Switching reaction 900 in seconds for quantities 0 AL n P ord the delay occurs only when switching the alarm on 6 ALS In the situation when the oFF support function is enabled after the retreat of the alarm state the alarm symbol is not blanked but begins to pulsate In the AL1 3 alarm mode the signaling support is always enabled independently of the setting The signaling exists till the moment of blanking it by means of the and push buttons combination during 3 seconds The function concerns only and exclusively the alarm signaling then relay contacts will be active without support acc to the selected type of a
28. larm oFF on Support of the alarm Occurrence signaling 7 Interlocking of a renewed AL b 0 900 alarm switching on in seconds 0 8 Manufacturers dEf parameters Restoration of manufacturer s no parameters of the group no yES The write of the value ALon lower than ALoF switches the alarm off Selection of the monitored value Table 6 Value for the Item value ercentage in register BIER ENGe Kind of quantity Rr Sr 4015 parameter values and outputs 100 00 off lack of quantity alarm disabled none 01 U 1 voltage of phase L1 Un V 02 1 current in the phase wire L1 In A 03 ES active power of phase L1 Un x In x cos 0 W 04 q 1 reactive power of phase L1 Un x In x sin 90 var 05 921 apparent power of phase L1 Un x In VA 06 PF1 active power factor of phase L1 1 07 tg1 tgo coefficient of phase L1 1 08 U2 voltage of phase L2 Un V 09 2 current in the phase wire L2 In A 10 P 2 active power of phase L2 Un x In x cos 0 W 11 q 2 reactive power of phase L2 Un x In x sin 90 var 12 S 2 apparent power of phase L2 Un x In VA 13 PF2 active power factor of phase L2 1 14 tg2 tgo coefficient of phase L2 1 16 15 U 3 voltage of phase L3 Un V 16 3 current in the phase wire L3 In A 17 pss acti
29. nd of mean power causes the archive erasing The reset of averaged power or the change of averaging time does not erase the archive The automatic erasing of the archive and averaged power is performed when changing the voltage or current ratio 20 Result Result Result Result Result Mean power Pav W time time Averagin Averagin 8 00 8 15 8 30 8 45 9 00 Time on the internal clock Fig 10 Measurement of 15 minutes mean active power synchronized with the clock 7 RS 485 INTERFACE Parameter set of the serial ND20 meter link identifier OxBC meter address 1 247 baud rate 4 8 9 6 19 2 38 4 kbit s working mode Modbus RTU information unit 8N2 8E1 801 8N1 maximum response time when requesting for archive 1000 ms maximum response time at remaining requests 750 ms maximum quantity of read out registers in one request 40 registers 4 byte registerss 80 registers 2 byte registers implemented functions 03 16 17 03 readout of registers 16 write of registers 17 device identification Manufacturer s settings address 1 baud rate 9600 baud RTU 8N2 mode Map of ND20 meter registers In the ND20 meter data are placed in 16 and 32 bit registers Process variables and meter parameters are placed in the address area of registers in a way depended on the variable value type Bits in 16 bit registers are numbered from the youngest to the oldest 60 615 32
30. ord NrBL range 1 9000 1003 R Year of archived mean power with number NrBL 0 1004 R Month 100 day of archived mean power with number NrBL 0 1005 R Hour 100 minute of archived mean power with number NrBL 0 1006 R Value of archived mean power with number NrBL 0 1007 R float type 4 bytes in sequence 3 2 1 0 1008 R Year of archived mean power with number NrBL 1 1009 R Month 100 day of archived mean power with number NrBL 1 1010 R Hour 100 minute of archived mean power with number NrBL 1 1011 R Value of archived mean power with number NrBL 1 1012 R float type 4 bytes in sequence 3 2 1 0 1073 R Year of archived mean power with number NrBL 14 1074 R Month day of archived mean power with number NrBL 14 1075 R Hour minute of archived mean power with number NrBL 14 1076 R Value of archived mean power with number NrBL 14 1077 R float type 4 bytes in sequence 3 2 1 0 Table 10 PR ae Range Description By default 4000 RW 0 60000 Protection password 0 4001 RW 0 900 s Interlocking time of the renewed switching of the 0 relay output on 4002 RW 0 1200 o rere mean owes 1000 of nominal signals 4003 RW 0 Current transformer ratio 0 22 4002 RW 0 Reserved 0 4003 RW 1 10000 Current transformer ratio 1 4004 RW 1 40000 Voltage transformer ratio 10 10 Synchronization of mean active power 0
31. re of the LY push button down causes the monitoring of the minimum value however the pressure of the 4 push button up causes the monitoring of the maximum value The pressure of the ESC push button during the monitoring of these values erases suitably minimum or maximum values During the operation in the measuring mode of all harmonics ALL table 3 instead of harmonic energy harmonic percentage values are displayed Through Cr and LA push buttons one can switch between successive harmonics The harmonic no is alternately displayed with the value The error display is described in the chapter 8 When displaying the reactive power a marker indicating the load character is displayed capacitive or inductive Displayed quantities in the field 9 fig 5 Table 1 L4 V Li 2 V Li Var L1 VA L PF L4 tg Backlit symbols LV L23 V LA L4W L4 Var L tg kWh L3 V L3 4 L3 A L3 W L3 Var La VA L3 PF L3 tg row 1 U1 U12 11 P1 Q1 S1 PF1 tg1 posu Displayed row2 U2 U23 I2 P2 Q2 52 PF2 tg2 valige ai Sr Pa I aa S3 PF3 tg3 EE L4 THD U L4 THD I Backlit symbols vus L2 THD U 12 THD kWh kVarh kVarh Ls THD U Ls THD I row 1 Uh1 V Ih1A reactive reactive inductive capacitive THD1 TH
32. rh 7106 99999 9 kVarh 7554 R 3 phase reactive capacitive energy number of overflows in 100 7108 register 7555 reset after exceeding 99999999 9 kVarh Mvarh 7555 R 3 phase reactive capacitive energy counter totting up to kvarh 7110 99999 9 kVarh Imported 3 phase active harmonic energy number of 100 MWh 7556 R overflows in register 7557 reset after exceeding 7112 99999999 9 kWh 7557 R Imported 3 phase active harmonic energy counter totting kWh 7114 up to 99999 9 kWh Exported 3 phase active harmonic energy number of 100 MWh 7558 R overflows in register 75589 reset after exceeding 7116 99999999 9 kWh 7559 R Exported 3 phase active harmonic energy counter totting kWh 7118 up to 99999 9 kWh 7120 7560 R Time hours minutes 7122 7561 R Time month day 7124 7562 R Time year 7126 7563 R Analog output control Ma 7128 7564 R Voltage L1 min V 7130 7565 R Voltage L1 max V 7132 7566 R Voltage L2 min V 7134 7567 R Voltage L2 max V 7136 7568 R Voltagee L3 min V 7138 7569 R Voltage L3 max V 7140 7570 R Current L1 min A 7142 7571 R CurrentL1 max A 7144 7572 R Current L2 min A 7146 1573 R Current L2 max A 7148 7574 R Current L3 min A 7150 1575 R Current L3 max A 7152 7576 R Active power L1 min W 7154 7577 R Active power L1 max W 7156 7578 R Active power L2 min W N CN
33. rmer ratio Current inputs are defined in the order as 1 5 5 2 Voltage Inputs Quantities on voltage inputs are automatically converted acc to the introduced ratio of the external voltage transformer Voltage inputs are defined in the order as 3 x 57 7 100 230 400 V 5 3 Connection Diagrams Supply RS485 OUimp OUA1 N GNDIB A pt __ Direct measurement in a 4 wire network Supply RS485 OUimp AL1 OUA1 GNDIB Semi indirect measurement in a 4 wire network Indirect measurement with the use of 3 current transformers and 2 or 3 voltage transformers in a 4 wire network Supply RS 485 OUimp AL1 QUA GNDIB A Tiaras Ae 27 26 25 24 2322 21 20 19 18 17 16 15 14 13 12 Fig 4 Meter connection diagrams in a 4 wire network 6 ND20 ProgramMING 6 1 Frontal Panel 16 15 14 43 12 11 AL2 19 1 1 17 zl 2 2 18 A 111 EL a t 1 8 19 Miri T 20 7 Fig 5 Frontal panel Description of the frontal panel 1 abandon push button ESC 2 push button to displace to the left 3 push button to decrease the value 4 push button to increase the value 5 push button to displace to the right 6 acceptance push button ENTER 7 symbol of displayed value of averaged active power 8 display field of mean values frequency time power guard 9 display field of basic
34. rs acc to the Data mode table 4 table 5 table 6 Parameters acc to def manufacturer s def Y manufacturer s def Y manufacturer s the table 7 parameters parameters parameters zum co or or or or 30 sec 30sec 30sec 30 sec cS co E E Selection of quantities for 30 sec modification Selection of quantities for modification or Selection of quantities for modification Or Selection of quantities for 30 modification sec Change of quantity Change of quantity Change of quantity 39 sec value value value 30 or 30 or sec Fig 7 Operating modes of the ND20 meter 12 6 5 Parameter Settings For the configuration of ND20 meters a free LPCon software is destined and is available on the www lumel com pl en web site ZZL rr ru Fig 8 Setup menu The entry in the programming mode is carried out through the pressure and holding down of the push button during ca 3 sec The entry in the programming mode is protected by the access code If there is not such a code the program transits into the programming option The inscription SET is displayed in the first row and the first group of PAr parameters The monitoring of parameters is always available through the pressure and holding down the push button during ca 3 sec 6 5 1 Setting of Meter Parameters Select the PAr mode in options by CY or push buttons and approve the choice
35. ue x 65536 register 4039 value 10 kWh Exported active energy register 4040 value x 65536 register 4041 value 10 kWh Reactive inductive energy register 4042 value x 65536 register 4043 value 10 kVarh Reactive capacitive energy register 4044 value x 65536 register 4045 value 10 kVarh Imported active harmonic energy register 4046 value x 65536 register 4047 value 10 kWh Exported active harmonic energy register 4048 value x 65536 register 4049 value 10 kWh 24 Status register Bit 15 1 damage of the non volatile memory Bit 14 1 lack of calibration or erroneous calibration Bit 7 1 the interval of averaged power is not elapsed Bit 6 1 frequency for THD calculation beyond intervals 48 52 for frequency 50 Hz 58 62 for frequency 60 Hz Bit 13 1 error of parameter values Bit 5 1 voltage too low for frequency measurements Bit 12 1 error of energy values Bit 11 1 error of phase sequence Bit 10 current range 0 1 A 1 5 A Bit 4 1 too low voltage of phase Bit 3 1 too low voltage of phase B Bit 2 1 too low voltage of phase A Bit 9 Bit 8 Voltage range Bit 1 the RTC time battery is used up 57 7 V Bit 0 state of relay output
36. ve power of phase L3 Un x In x cos 0 W 18 q 3 reactive power of phase L3 Un x In x sin 90 var 19 SES apparent power of phase L3 Un x In VA 20 PF3 active power factor of phase L3 1 21 tg3 tg coefficient of phase L3 1 22 U_A mean 3 phase voltage Un V 23 mean 3 phase current In A 24 3 phase active power 3 x Un x In x cos 0 W P1 P2 P3 5 25 q 3 phase reactive Power 3 x Un x In x sin 90 Q1 Q2 Q3 var 26 S 3 phase apparent Power 3x Un x In VA 51 52 83 27 PF 3 phase active factor 1 28 Tg_A 3 phase tgg coefficient 1 29 FrEq frequency 100 Hz 30 U12 phase to phase voltage L1 L2 Un V 31 U23 phase to phase voltage L2 L3 Un V 32 U31 phase to phase voltage L3 L1 3 Un IV 33 U4_A mean phase to phase voltage 34 P At mean active power 3 x Un x In x cos 0 W 35 P Used percentage of the ordered 100 ord active power consumed energy Un In rated values of voltages and currents Contact Contact state state 1 1 Relay Relay Relay enabled enabled disabled 0 Relay disabled Measured value Measured value ALof ALon ALof ALon a n on b n OFF 17 Contact state Relay enabled Relay enabled Relay enabled Relay Relay Relay disabled disabled disabled gt ALof ALon Measured value ALof Akon Measured value c On d OFF Fig 9
37. y given voltage and current ratios of measuring transformers Indications of power and energy take into consideration values of programmed ratios The value of each measured quantity can be transmitted to the master system through the RS 485 interface The relay output signals the overflow of the chosen quantity and the impulse output can be used for the consumption check of 3 phase active and reactive energy The meter has additionally a continuous current output The meter has a galvanic separation between respective blocks supply measuring inputs voltage and current inputs analog output RS 485 output impulse output 2 METER SET The set of the ND20 meter is composed of 1 ND20 meter 1 pc 2 users manual 1 pc 3 guarantee card 1 pc 4 seal 1 pe 5 holders to fix the meter in the panel 4 pcs 3 BASIC REQUIREMENTS AND OPERATIONAL SAFETY In the safety service scope the ND20 meter meets to requirements of the EN 61010 1 standard Observations Concerning the Operational Safety N All operations concerning transport installation and commissioning as well as maintenance must be carried out by qualified skilled personnel and national regulations for the prevention of accidents must be observed Before switching the meter on one must check the correctness of connection to the network Before removing the meter housing one must switch the supply off and disconnect measuring circuits
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