KMB NOVAR 2600 Operating Manual
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KMB NOVAR 2600 Operating Manual

Three-phase power factor controllers & power analyzers
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KMB systems, s.r.o.
Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic
tel. +420 485 130 314, fax +420 482 736 896
email : kmb@kmb.cz, internet : www.kmb.cz
NOVAR 2600
Three-Phase Power Factor Controllers
& Power Analyzers
Operating Manual
Document
Release
Valid for versions
revision
date
hardware
bootloader
firmware
ENVIS
1.3
15.6.2020
2.6
4.0
3.0.33
1.8

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  • Page 1 KMB systems, s.r.o. Dr. M. Horákové 559, 460 06 Liberec 7, Czech Republic tel. +420 485 130 314, fax +420 482 736 896 email : kmb@kmb.cz, internet : www.kmb.cz NOVAR 2600 Three-Phase Power Factor Controllers & Power Analyzers Operating Manual...

  • Page 2: Table Of Contents

    NOVAR 2600 Operating Manual LIST OF CONTENTS 1. GENERAL................6 1.1 Common features............................6 1.2 Operation..............................8 2. INSTALLATION..............9 2.1.1 Physical..............................9 2.2 Instrument Connection..........................9 2.2.1 Power Supply............................9 2.2.2 Measured Electrical Quantities......................10 2.2.2.1 Measured Voltages........................10 2.2.2.2 Measured Currents........................10 2.2.3 Outputs..............................
  • Page 3 NOVAR 2600 Operating Manual 4.3 PFC Setup Parameters..........................24 4.3.1 PFC Control Setup..........................25 4.3.1.1 Target Power Factor for Tariff 1/2....................25 4.3.1.2 Control Bandwidth on High Loads for Tariff 1/2................25 4.3.1.3 Control Time for Tariff 1/2......................26 4.3.1.4 Offset Power for Tariff 1/2......................27 4.3.1.5 Tariff 2 Control..........................
  • Page 4 NOVAR 2600 Operating Manual 5.2.2.2 Daily and Weekly Graphs......................63 5.2.2.3 Electricity Meter Data Group......................63 5.2.2.4 Instrument Setting........................64 5.2.2.4.1 Display Setting........................64 5.2.2.4.2 Installation Setting......................... 64 5.2.2.4.3 Clock Setting......................... 64 5.2.2.4.4 Average Values Processing Setting..................65 5.2.2.4.5 Remote Communication Setting.................... 65 5.2.2.4.6 Embedded Electricity Meter Setting..................65...
  • Page 5 NOVAR 2600 Operating Manual 8. MANUFACTURED MODELS AND MARKING....89 9. TECHNICAL SPECIFICATIONS........90 10. MAINTENANCE, SERVICE..........96...

  • Page 6: General

    NOVAR 2600 Operating Manual 1. General This manual comprises description of NOVAR 2600 three-phase power factor controllers. The controllers are based on precise and powerful three-phase measurement & evaluating core and combine multifunctional panel meter and power quality analyzer with power factor control functionality in the same box.
  • Page 7 NOVAR 2600 Operating Manual Measurement & Evaluation • three measurement wide range voltage inputs, star / delta / Aron connection • three measurement current inputs for xxx/ 5A or xxx /1A CTs connection • sampling rate 128/96 samples/period, 10/12 periods evaluation cycle (200 ms at 50/60 Hz) •...

  • Page 8: Operation

    NOVAR 2600 Operating Manual 1.2 Operation From point of view of function the NOVAR 2600 power factor controllers consist from two main blocks. The first of them is universal three-phase meter. The meter can be optionally equipped with battery backed real time circuit, additional memory for datalogging, various communication interfaces etc., forming powerful network analyzer.

  • Page 9: Installation

    NOVAR 2600 Operating Manual 2. Installation 2.1.1 Physical The instrument is built in a plastic box to be installed in a distribution board panel. The instrument’s position must be fixed with locks. Natural air circulation should be provided inside the distribution board cabinet, and in the instrument’s neighbourhood, especially underneath the instrument, no other instrumentation that is source of heat should be installed.

  • Page 10: Measured Electrical Quantities

    NOVAR 2600 Operating Manual 2.2.2 Measured Electrical Quantities 2.2.2.1 Measured Voltages Measured voltages in wye ( star ), delta or Aron connection connect to terminals VOLTAGE / N (No. 11), U1 (No. 12), U2 (No. 13), and U3 (No. 14). Phase rotating direction is free.

  • Page 11: Relay Outputs

    NOVAR 2600 Operating Manual 2.2.3.1 Relay Outputs Any combination of compensation capacitors or chokes (three-phase, two-phase or single -phase) can be connected to the instrument outputs via appropriate contactors. Fig. 2.2: Output connection, various types of capacitors If not of all outputs used, you can use upper three relay outputs for alarm signalling or for heating/cooling control ( see example wirings further below).

  • Page 12: External Temperature Sensor

    NOVAR 2600 Operating Manual Use terminals D1A (No. 23) and D1B (No. 24) for the digital input connection – see wiring examples in appropriate chapter further below. The input is isolated from other instrument circuitry. To activate the output apply voltage of specified range to the terminals.

  • Page 13: Commissioning

    NOVAR 2600 Operating Manual 3. Commissioning 3.1 Setup When switching on the power supply, the instrument will display manufacturer's logo for short time and after that, usually the power factor control screen is displayed : As neither output types nor reactive power sizes of individual outputs are known now, the instrument...

  • Page 14: Setup Example

    NOVAR 2600 Operating Manual Nominal frequency f • - the parameter must be set in compliance with the measurement network nominal frequency to either 50 or 60 Hz. • Nominal Voltage U , Nominal Current I , Nominal Power P...

  • Page 15: Pfc Setup

    NOVAR 2600 Operating Manual 3.1.2 PFC Setup In the Setting menu, navigate to and select the PFC Setting. Or, from main PFC screen, simply push button. 3.1.2.1 PFC Control Setup In the PFC Control Setting window you can set basic control parameters such like target power factor etc.
  • Page 16 NOVAR 2600 Operating Manual Then, in case that : • at least one valid output ( capacitor or choke ) was found • the instrument is not switched into the manual mode • no alarm action is active • voltage and current higher than measurable minimums at least in one of phases the instrument starts to control power factor to preset value.

  • Page 17: Pfc Block

    4. PFC Block 4.1 Basic Functions NOVAR 2600 power factor controllers are fully automatic instruments that allow optimum control of reactive power compensation. Control is provided in all four quadrants and its speed depends on both control deviation value and its polarization (overcompensation / undercompensation).

  • Page 18: Outputs & Digital Input State

    NOVAR 2600 Operating Manual Fig. 4.1: PFC Screen actual data & status gauges panel event indicator outputs state actual temperature toolbar panel reactive power control time deviation flags bargraph 4.2.1.1 Outputs & Digital Input State There are two columns of icons indicating actual state of individual outputs (and the digital input, optionally) on the left side of the screen.

  • Page 19: Power Factor Gauges

    NOVAR 2600 Operating Manual • … general impedance Z (individual phase impedance components do not match to any above noted standard C- or L-type outputs) • … alarm output • … fan output • … heater output Secondly, actual discharge time of any disconnected output can be checked from appropriate output icon ( output type information removed from the icons for this example again ) : •...

  • Page 20: Control Deviation Flags

    NOVAR 2600 Operating Manual 4.2.1.4 Control Deviation Flags Just below the power factor gauges there are control deviation flags – three particular ones for each phase L1, L2, L3 a one total three-phase ( ΣL ) flag. These flags show the magnitude of deviation of the instantaneous reactive power in the power system from tolerable reactive power range defined by the specified value of required power factor and control bandwidth.

  • Page 21: Actual Data & Status Panel

    NOVAR 2600 Operating Manual 4.2.1.6 Actual Data & Status Panel At the panel you can observe all of essential actual network quantities and state of power factor control process. The data are arranged in folders and you can list through them with the ▲and ▼buttons. Power factor format can be selected using the button ( described further below ).

  • Page 22: Alarms Folder

    NOVAR 2600 Operating Manual For special PFC-block related data understanding, such like ΔQfh, cos φ / tan φ / φ or CHL, see the Special PFC-Block Related Data Meaning & Evaluation chapter. 4.2.1.6.2 Alarms Folder At the alarms folder, all of processed alarms are listed. The processed alarms term means the alarms with preset indication or actuation function.

  • Page 23: Toolbar

    NOVAR 2600 Operating Manual • … standby state. If the controller in the control state and power factor control process cannot by carried on for some reason the standby indicator appears • … temporary standby state with time expiration indication. The controller can be forced into the temporary standby state by operator manual intervention.

  • Page 24: Pfc Setup Direct Access Button

    4.2.1.9.2 PFC Setup Direct Access Button As the NOVAR 2600 controllers are complex instruments, their presetable parameters are for better orientation hierarchically arranged into several groups that are accessible in standard way via main menu.

  • Page 25: Pfc Control Setup

    NOVAR 2600 Operating Manual necessary parameters in the group edited you can escape from the parameter group. Only now the change confirmation message “Save changes ?” appears and only when confirmed with the button all of the parameter changes in the group come in effect at once. Otherwise, the changes are thrown and the parameters stay unchanged.

  • Page 26: Control Time For Tariff 1/2

    NOVAR 2600 Operating Manual Tab 4.1 : PFC Control Setup – Overview of Parameters Parameter Setup Range Default Comment Setup Other available formats : „tan“, „φ“ target PF (tariff 1) - 0.80 ÷ 0.80 (cos) 0.98 (cos) control bandwidth (tariff 1) 0.000 ÷...

  • Page 27: Offset Power For Tariff 1/2

    NOVAR 2600 Operating Manual 4.3.1.4 Offset Power for Tariff 1/2 These parameters are meaningful when offset control parameter ( see below ) is activated only. Unless this control mode is active, they do not appear. The parameters specify nominal value of the offset (three-phase) reactive power for tariff 1, respectively for tariff 2.

  • Page 28: Tariff 2 Control Power

    NOVAR 2600 Operating Manual If the tariff 2 control power parameter is entered as positive value the controller interprets it as “unsigned” limit value of power. In such case the tariff 2 applies as soon as absolute value of the 3Pfh power drops below preset level “T2CP”, i.e.

  • Page 29: Choke Control

    NOVAR 2600 Operating Manual 4.3.1.8 Choke Control The instrument allows connecting chokes for power system decompensation. The decompensation system can be built as combined, in which case both chokes and capacitors are connected to the controller, or only chokes are connected. The control deviation evaluation and the control time countdown is derived from power of the smallest capacitor or of the smallest choke, whichever is less.

  • Page 30: Non-Mixed Choke Control

    NOVAR 2600 Operating Manual The choke control limit power factor parameter setting is irrelevant for this control mode, therefore it is not displayed. The non-mixed mode cannot be set together with the 3p+1p control strategy. 4.3.1.9 Choke Control Limit Power Factor (for Mixed Choke...

  • Page 31: Pfc Output Setup

    NOVAR 2600 Operating Manual When, for example, an active load of 15 kW occurs, then balanced state will be reached at power factor of approximately 0.95 (measured by the controller). This value corresponds to the ratio of 5kvar / 15 kW. In other words, the controller will intentionally undercompensate by 5 kvar at the connected network point in order the target power factor of 1.00 to be reached in the electricity meter connection...
  • Page 32 NOVAR 2600 Operating Manual These parameters can be set automatically using the AOR process. For manual setting, the manual output type & power filler can be used too – see below. If an output was detected and marked as defective (for details see the output error alarm description),after being edited this assignment is cancelled and the output is reincluded into power factor control process by editing any of the two parameters.

  • Page 33: Discharge Time For Output Set 1/2

    NOVAR 2600 Operating Manual The value is taken in account during power factor control intervention evaluation in order the contactors to be loaded as uniformly as possible. • Sw. On Time … the output switch-on time since the last clearing. The value is important for connected compensation capacitor (if any) lifetime estimation.

  • Page 34: Switching Mode

    NOVAR 2600 Operating Manual For now, only the discharge time parameters can be set individually for the two sets. There can be more of such parameters in the next firmware versions. 4.3.2.4 Switching Mode In most of applications it is recommended to let the controller to use the compensation steps during power factor control process without any limitations.

  • Page 35: Manual Output Type & Power Filler

    NOVAR 2600 Operating Manual • no alarm action is activated If these conditions are met, the controller starts the AOR process : • automatically if the AOR parameter is set to Auto and the controller is in the control state (i.e.

  • Page 36: Pfc Alarm Setup

    NOVAR 2600 Operating Manual 4.3.3 PFC Alarm Setup The controllers evaluate various nonstandard conditions ( such like measured quantities' extreme values ) and, by the PFC alarm setting, various alarms can be activated. Fig. 4.11 : PFC Alarm Setup – Main Level...
  • Page 37 NOVAR 2600 Operating Manual Tab 4.3 : PFC Alarms alarm alarm event control limit activation default setting notes Indication, mark quantity / setting (/ deact.) Actuation event range delay U<< voltage loss 20% of U 0.02 sec / simultaneous (1 period)

  • Page 38: Standard Type Alarms

    NOVAR 2600 Operating Manual The beginning of the PFC alarm setup group main level screen is displayed on Fig. 4.11. You can scroll through all the alarms and check their main setup and actual state. In each row there is shown : •...

  • Page 39: Fast Actuation Reaction Alarms

    NOVAR 2600 Operating Manual THDU > … Total Harmonic Distortion of voltage alarm • • THDI > … Total Harmonic Distortion of current alarm • P>< … active power exceeded/drop alarm • PF>< … PF control failure alarm • PF>, PF< … overcompensation/undercompensation alarm There are following exceptions in the standard type alarms behaviour : •...

  • Page 40: T1>< (T2><) - "Temperature Exceeded/Drop" Alarm

    NOVAR 2600 Operating Manual If at least the alarm indication is set, the controller continually checks reactive power changes in the power system during the control process as the sections are connected and disconnected and compares them with each section’s power preset in its memory. All of the single -phase reactive power components are checked individually.

  • Page 41: Ooc - "Out Of Control" Alarm

    NOVAR 2600 Operating Manual The alarm functionality is similar to the standard type alarms. The only difference is that you can set not only the threshold temperature ( limit ) but the polarity of its deviation too ( > or <). Therefore, the alarm can be activated by both overheating ( >...
  • Page 42 NOVAR 2600 Operating Manual Tab 4.4 : Control Parameters Tab 4.5 : Output Parameters Default Setup Default Setup parameter default setup parameter default setup output 1.1÷ 2.9 type / zero / 0 kvars / target PF 1 / 2 cos; 0.98...

  • Page 43: Pfc Block Operation

    NOVAR 2600 Operating Manual 4.4 PFC Block Operation After powerup, initial test runs first. During this, the manufacturers logo is displayed momentarily. After the test the controller returns into one of two main states corresponding to the state last state set ( the last state is registered in non-volatile memory ) •...

  • Page 44: Manual State

    NOVAR 2600 Operating Manual • CT connection test There can be various reasons causing the controller goes to the standby state : • fundamental component of measuring voltage or current is below the instrument sensitivity causing that power factor cannot be evaluated; this is indicated with the U=0 or the I=0 message in the control deviation flags area •...
  • Page 45 NOVAR 2600 Operating Manual If the CT-ratio is not set (or its value is 5/5 A or 1/1 A), call for the CT-ratio setting appears before the AOR- process is launched. When this call is ignored and the CT-ratio is not set properly the power values of outputs recognized during the AOR-process will be incorrect.

  • Page 46: Ct Connection Test

    NOVAR 2600 Operating Manual • output No. 1.6 was recognized as non-standard capacitor, out-of-tolerance or possibly damaged (its phase components doesn't match any standard capacitor type); it can be caused by wrong particular measurement too and the type can be reclassified later in the process •...
  • Page 47 NOVAR 2600 Operating Manual The CT connection test is simple tool for right current transformers' connection analysis. It uses the first four compensation outputs for detection of individual phase current angles. The only condition must be fulfilled for the CT test usage : either three-phase or single-phase compensation capacitors are connected to the first four control outputs.
  • Page 48 NOVAR 2600 Operating Manual The test can have up to six rounds with four testing steps each. After each step, the measurement results of individual phases are analyzed. If the results of any phase is sufficiently stable, detected current signal connection information is shown in the main line, as can be seen in the picture above in the L1 phase result.

  • Page 49: Single-Phase Mode

    NOVAR 2600 Operating Manual • disconnect the wires connected to the instruments L2 input, swap them and connect to the L3 input • disconnect the wires connected to the L3 input and connect them to the L3 input (while keeping their polarity) Then launch the CT test again to be sure the intervention was successful.
  • Page 50 NOVAR 2600 Operating Manual Fig. 4.20 : Single-Phase Connection to Networks with Neutral Wire - Examples 1Y3 connection type 1Y3 connection type recommended wiring alternative wiring For networks without neutral wire, it is possible to connect all three voltages; then set 1Y3 connection as at previous cases.

  • Page 51: Setup

    NOVAR 2600 Operating Manual 4.4.5.2 Setup In the Installation group of parameters following two parameters must be set. 4.4.5.2.1 Connection Type 1Y3 / 1D3 If network phase-to-line voltage is connected to the U1 (No.12) and N (No. 11) terminals, or such voltage appears on internal voltage divider when the N terminal is free, the 1Y3 connection type must be set.

  • Page 52: Acd Process - Automatic Connection Detection

    NOVAR 2600 Operating Manual 4.4.5.2.3 ACD Process – Automatic Connection Detection The type of connection must be set always manually. The U1 angle can be set manually too, but we strongly recommend to use automatic setup – the ACD process (Automatic Connection Detection). This process not onlz detects and sets the U1 angle, but network nominal votage U as well.
  • Page 53 NOVAR 2600 Operating Manual Fig. 4.23 : ACD Process – Successful Step Result at 1Y3 connection type at 1D3 connection type When 1Y3 connection type is set the controller supposes a line-to-neutral voltage (L-N, left screen) is connected; when 1D3 connection type a line-to-line voltage (L-L, right screen) is expected.

  • Page 54: Operation

    NOVAR 2600 Operating Manual Tab. 4.8 : The Most Common Nominal Voltages 58 V 100 V 230 V 400 V 480 V 690 V On successful completion of the total process, the controller saves recognized U1 angle and nominal voltage U into its memory.

  • Page 55: Values Used For Power Factor Control Evaluation And Aggregation

    NOVAR 2600 Operating Manual 4.4.6.1 Values Used for Power Factor Control Evaluation and Aggregation Powers Pfh and Qfh of individual phases are basic quantities used for power factor control. Values of the quantities are evaluated each measurement cycle. Then they are internally averaged with floating 5 seconds long window for usage in power factor control with contactor-type outputs.

  • Page 56: Chl - Capacitor Harmonic Load Factor

    NOVAR 2600 Operating Manual 4.4.6.4 CHL – Capacitor Harmonic Load Factor This quantity was designed and implemented in order compensation capacitors protection against current overload to be possible simply. If appropriate alarm actuation is set the controller disconnects the sections from a network as soon as the CHL-factor exceeds preset limit value.

  • Page 57: Rc, Rl - Compensation Reserve Powers

    NOVAR 2600 Operating Manual where : CHL… capacitor harmonic load factor [ % ] i... order of harmonic [ - ] Ui..voltage of i harmonic component [ V ] … nominal voltage [ V ] This factor value does respect, besides respecting each harmonic component’s voltage value, distribution of harmonic components of different orders across their spectrum and it addresses the effect of voltage values.
  • Page 58 NOVAR 2600 Operating Manual ΔQfh …..control deviation reactive power of L1-phase The outputs that have non-zero reactive power and that are not set as fixed outputs are considered as the control outputs (including the outputs that are temporary disabled due to OE-alarm actuation).
  • Page 59 NOVAR 2600 Operating Manual You can use the compensation reserves not only for checking the capacity of existing compensation system, but for any new compensation system dimensioning too : Install single instrument (without any of compensation sections connected ) at the network where new compensation system to be projected .

  • Page 60: Meter Block

    NOVAR 2600 Operating Manual 5. Meter Block 5.1 Basic Functions The meter block - universal three-phase meter - is key part of the instrument. All of usual electric quantities like line-to-line and phase voltages, currents, active, reactive and apparent powers, power factors, voltage and current THDs and harmonic components, active and reactive energy, average power maximums, frequency etc.

  • Page 61: Main Menu

    NOVAR 2600 Operating Manual • … Frequency measurement not yet finished or out of range. In such cases measured signals are scanned according preset nominal frequency f and measured values can be incorrect. Check f parameter setting. • … At least one of voltage or current input overloaded •...
  • Page 62 NOVAR 2600 Operating Manual Fig. 5.4 : Meter Actual Data Navigation Chart Main Menu Actual Values Branch ● U , unb ● U Graphs Electricity Meter ● A ● PF ● cos φ ● 3PF, 3cos φ, ΣI Legend: Uxy/Ux..line/phase voltage (x/y...1,2, 3) ●...

  • Page 63: Daily And Weekly Graphs

    NOVAR 2600 Operating Manual Fig. 5.5 : Actual Data The actual data group comprises other actual data presentations that are Display Mode Switch accessible with the button - so called actual data display mode switch . When pressed, a pull up menu rolls over the display temporary.

  • Page 64: Instrument Setting

    NOVAR 2600 Operating Manual 5.2.2.4 Instrument Setting In this group most of presetable parameters can be viewed and edited. Other parameters can be accessed via communication link from a PC using ENVIS program only. If any of setting window is viewed, an instrument automatically reswitches to actual data display during an approx.

  • Page 65: Average Values Processing Setting

    Communication Rate …Communication rate in Bauds (Bd). • • Data Bits … Set to 8 for KMB protocol; when parity bit is used (Modbus, usually) set to 9 • Parity … Set to 8 for KMB protocol; for Modbus, usually set to 9 •...

  • Page 66: Instrument Lock

    NOVAR 2600 Operating Manual 5.2.2.5 Instrument Lock Three levels of locking to allow protection against unauthorized access are implemented. The active protection level is symbolized in the main menu by three different states of the Lock icon : ● Unlocked – anyone with physical access to the instrument can freely set-up and configure all parameters in the instrument, clear archives and other persistent data or reset counters.

  • Page 67: Info - General Window

    NOVAR 2600 Operating Manual 5.2.2.6.1 Info – General Window • Instrument Model & Serial Number … Instrument hardware model & serial No. Instrument Hardware, Firmware & Bootloader Versions …Instrument hardware & • firmware specification. • Object Number … Measured node specification ( preset by ENVIS program for data identification ).

  • Page 68: Description Of Operation

    NOVAR 2600 Operating Manual 5.3 Description of Operation 5.3.1 Method of Measurement The measurement consists of three processes being performed continuously and simultaneously: frequency measuring, sampling of voltage and current signals and evaluation of the quantities from the sampled signals.

  • Page 69: Harmonics And Thd Evaluation Method

    NOVAR 2600 Operating Manual correspond to the potential of terminals VOLTAGE / U1 to U3 Measured phase voltages U to U towards the terminal VOLTAGE / N. Three current signals - I - are measured. Another current is calculated from samples of directly measured ones as negative vector sum of all measured current vectors ( Kirchhoff rule ).
  • Page 70 NOVAR 2600 Operating Manual ∑ Three-phase active power: : ∑ Three-phase reactive power : ∑ Three-phase apparent power : ∑ ∑ Three-phase power factor : ∑ Fundamental harmonic component quantities : Fundamental harmonic power factor : , Δφ optionally) =Ufh ∗Ifh...

  • Page 71: Temperature

    NOVAR 2600 Operating Manual For outright specification of the quadrant, the power factor of the fundamental harmonic component – cos φ – is expressed according to the graph with two attributes : a sign ( + or - ), which indicates polarity of active power •...

  • Page 72: Harmonics And Thd Presentation

    NOVAR 2600 Operating Manual • harmonic components, THD and unbalance – the last measurement cycle values are displayed (no averaging) • temperature – the value is refreshed each temperature measurement cycle (see above) Actual values, read from an instrument via a communication link for monitoring purposes are evaluated from one –...

  • Page 73: Maximum And Minimum Average Values

    NOVAR 2600 Operating Manual Tab. 5.2 : Average Values Groups Average values group Averaged quantities “ U / I ” , I, f, analog input “ P / Q / S ” P, Q, S, PF, Pfh, Qfh, cosφ, ΔQfh, RC, RL...

  • Page 74: Recorded Values Aggregation

    NOVAR 2600 Operating Manual 5.3.3.3 Recorded Values Aggregation At models equipped with datalogging capability all of measured and evaluated data can be optionally archived into the instrument's memory. The record period is presetable in a wide range and aggregated data are archived.

  • Page 75: Setting

    NOVAR 2600 Operating Manual 5.3.4.3 Setting Main parameters determining electricity meter unit function can be set manually. By selecting appropriate icon a Setting – Elmeter window appears. Record period is an automated meter reading interval that defines how often the electricity Fig.

  • Page 76: Maximum Demand Presentation

    NOVAR 2600 Operating Manual 5.3.4.5 Maximum Demand Presentation While in the electricity meter energy window you can switch to the maximum active power demand window with the ▼or ▲button. Only three-phase maximums with their time stamps are displayed. In Fig. 5.16 : Maximum the first row there is total maximum demand 3MD, i.e.

  • Page 77: Computer Controlled Operation

    NOVAR 2600 Operating Manual 6. Computer Controlled Operation Monitoring the currently measured values and the instrument setup can be done not only on the instrument panel but also using a local or remote computer connected to the instrument via a communication link.

  • Page 78: Communication Cable

    NOVAR 2600 Operating Manual Tab. 6.1 : RS-485 Remote Communication Links Wiring COM1 interface COM2 interface signal terminal No. signal terminal No. Both of the links are insulated both from the instrument internal circuitry and mutually too, terminals No. 43 and 46 are not connected internally ! 6.1.3.1 Communication Cable...

  • Page 79: Modbus-Rtu Communications Protocol

    NOVAR 2600 Operating Manual 6.2.2 Modbus-RTU Communications Protocol For the chance of easier integration of the instrument to the user's program, the instrument is also equipped with the Modbus - RTU communications protocol. A detailed description of the communications records can be found in an appropriate manual.

  • Page 80: Examples Of Connections

    NOVAR 2600 Operating Manual 7. Examples of Connections NOVAR 2600 Typical Installation TN-Network, Direct Star (“3Y”) Connection 18 Contactor Sections...
  • Page 81 NOVAR 2600 Operating Manual NOVAR 2600 R16 Typical Installation TN-Network, Direct Star (“3Y”) Connection 14 Contactor Sections Tariff Control, Fan, Alarm...
  • Page 82 NOVAR 2600 Operating Manual NOVAR 2600 T18 – Typical Installation...
  • Page 83 NOVAR 2600 Operating Manual NOVAR 2600 T7 – Typical Installation...
  • Page 84 NOVAR 2600 Operating Manual NOVAR 2600 – Measured Signal Connection Examples Three-Phase Connections TN Network IT Network Direct Star (“3Y”) Connection Direct Delta (“3D”) Connection TN Network IT Network Star (“3Y”) Connection via VT Direct Aron (“3A”) Connection...
  • Page 85 NOVAR 2600 Operating Manual IT Network IT Network Delta (“3D”) Connection via VT Delta (“3D”) Connection via VT (VT to Line-to-Neutral Primary Voltage) (VT to Line-to-Line Primary Voltage) Single-Phase Connections to Three-Phase Networks TN Network TN Network 1Y3 Connection Type...
  • Page 86 NOVAR 2600 Operating Manual IT Network IT Network 1Y3 Connection Type 1D3 Connection Type NOVAR 2600 – Power Supply Options Line-to-Line Voltage DC Power Supply Line-to-Neutral Voltage AC Power Supply AC Power Supply NOTE POLARITY MAXIMUM FREE AVAILABLE VOLTAGE !!!
  • Page 87 NOVAR 2600 Operating Manual NOVAR 2600 T – External Temperature Sensor Connection...
  • Page 88 NOVAR 2600 Operating Manual NOVAR 2600 4 – RS485 Remote Communication Connection...
  • Page 89 NOVAR 2600 Operating Manual 8. Manufactured Models and Marking...
  • Page 90 NOVAR 2600 Operating Manual 9. Technical Specifications Auxiliary Voltage 100 ÷ 415 V / 40 ÷ 100 Hz nominal aux. voltage range 100 ÷ 500 V , polarity free 75 ÷ 500 V / 40 ÷ 100 Hz aux. voltage range 90 ÷...
  • Page 91 NOVAR 2600 Operating Manual Measured Quantities Current measuring range 0.005 ÷ 7 A meas. uncertainty +/- 0.05 % of rdg +/- 0.02 % of rng =23±2°C) temperature drift +/- 0.03 % of rdg +/- 0.01 % of rng / 10 °C...
  • Page 92 NOVAR 2600 Operating Manual Measured Quantities – Power, Power Factor, Energy Active / Reactive Power, Power Factor (PF), cos φ ( P reference conditions “A” : ambient temperature ( t 23 ± 2 °C U, I U = 80 ÷ 120 % U , I = 1 ÷...
  • Page 93 NOVAR 2600 Operating Manual Function Characteristics according to IEC 61557-12 = 300 ÷ 415 V = 5 A STŘ , Symbol Function Class Measuring range Notes total effective power 0 ÷ (21.6 * U total reactive power 0 ÷ (21.6 * U...
  • Page 94 NOVAR 2600 Operating Manual Instrument Characteristics according to IEC 61557-12 power quality assessment function PQI-S classification according to par. 4.3 direct voltage connection voltage connection via VT temperature according to par. 4.5.2.2 < 95 % - noncondensation conditions humidity + altitude according to par. 4.5.2.3 <...
  • Page 95 > 5 years ( without supply voltage applied ) local communication port (option) USB 2.0 RS-485 / 2400÷460800 Bd / protocols KMB, Modbus-RTU remote comm. port No. 1 (option) Ethernet 100 Base-T / DHCP, webserver, Modbus-TCP remote comm. port No. 2 (option, alternatively with external RS-485 / 2400÷460800 Bd / protocols KMB, Modbus-RTU...
  • Page 96 NOVAR 2600 Operating Manual 10. Maintenance, Service The NOVAR 2600 instruments do not require any maintenance in their operation. For reliable operation it is only necessary to meet the operating conditions specified and not expose the instrument to violent handling and contact with water or chemicals which could cause mechanical damage.

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