CIRCUTOR CIRWATT-B410T User Manual

THREE-PHASE STANDARD

METER CIRWATT 400 B

USER MANUAL

(M98230701-03-13A)

THREE PHASE STANDARD CIRWATT B METER

CIRWATT B THREE PHASE INSTRUCTION MANUAL

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ADVERTENCIAS / SÍMBOLOS

PELIGRO

Una conexión incorrecta del equipo puede producir la muerte, lesiones graves y riesgo de incendio. Lea y entienda el manual antes de conectar el equipo. Observe todas las instrucciones de instalación y operación durante el uso de este instrumento. La instalación, operación y mantenimiento de este instrumento debe ser efectuado por personal cualificado solamente. El Código Eléctrico Nacional define a una persona cualificada como "una que esté familiarizada con la construcción y operación del equipo y con los riesgos involucrados".

ATENCIÓN

Consultar el manual de instrucciones antes de utilizar el equipo

En el presente manual, si las instrucciones precedidas por este símbolo no se respetan o realizan correctamente, pueden ocasionar daños personales o dañar el equipo y /o las instalaciones.

WARNINGS / SYMBOLS

DANGER

Death, serious injury, or fire hazard could result from improper connection of this instrument. Read and understand this manual before connecting this instrument. Follow all installation and operating instructions while using this instrument. Installation, operation, and maintenance of this instrument must be performed by qualified personnel only.

The National Electrical Code defines a qualified person as “one who has the skills and knowledge related to

the construction and operation of the electrical equipment and installations, and who has received safety

training on the hazards involved.”

WARNING

Consult the instruction manual before using the equipment.

In this manual, if the instructions preceded by this symbol are not met or done correctly, can cause personal injury or equipment damage and / or facilities.

WARNHINWEISE / SYMBOLE

DANGER

Un branchement incorrect de l’appareil peut entraîner la mort ou des lésions graves et peut provoquer un

incendie. Avant de brancher votre appareil, lisez attentivement le manuel et assurez-vous de bien avoir compris toutes les explications données. Respectez toutes les instructions concernant le mode

d’installation de l’appareil et son fonctionnement. L’installation, le fonctionnement et la maintenance de cet appareil doivent être réalisés uniquement par

du personnel qualifié. Le code électrique national définit en tant que personne qualifiée toute personne connaissant le montage et le fonctionnement de l’appareil ainsi que les risques que ceux-ci comportent »

ATTENTION

Consulter le manuel d’instructions avant d’utiliser l’appareil

Si les instructions suivantes, précédées dans le manuel d’un symbole, ne sont pas respectées ou sont

réalisées incorrectement, elles pourront provoquer des dommages personnels ou abîmer l’appareil et/ou les installations.

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WARNHINWEISE / SYMBOLE

GEFAHR

Durch einen nicht sachgemäßen Anschluss der Anlage können Tod, schwere Verletzungen und Brandrisiko hervorgerufen werden. Bevor Sie die Anlage anschließen, lesen Sie bitte das Handbuch durch und machen Sie sich dessen Inhalt klar. Beachten Sie bei Einsatz dieses Instrumentes sämtliche Installations- und Betriebshinweise. Installation, Betrieb und Wartung dieses Instrumentes müssen ausschließlich von entsprechend qualifiziertem Personal vorgenommen werden. Von dem nationalen Elektrocode wird eine qualifizierte

Person als jemand definiert, “der mit der Konstruktion und dem Betrieb einer Anlage und der damit verbundenen Risiken vertraut ist“.

ACHTUNG

Vor Inbetriebnahme der Anlage ist das Handbuch zu lesen.

Werden die in dem vorliegenden Handbuch mit diesem Symbol versehenen Hinweise nicht beachtet oder falsch verstanden, können Personenschäden und Schäden an der Anlage und/oder den Installationen verursacht werden.

ADVERTÊNCIAS / SÍMBOLOS

PERIGO

Uma ligação incorrecta do equipamento pode provocar a morte, lesões graves e risco de incêndio. Leia e compreenda o manual antes de ligar o equipamento. Observe todas as instruções de instalação e operação durante o uso deste aparelho. A instalação, operação e manutenção deste aparelho devem ser levadas a cabo exclusivamente por pessoal qualificado. O Código Eléctrico Nacional define uma pessoa qualificada como "uma pessoa que se encontre familiarizada com a construção e operação do equipamento assim como com os riscos inerentes”.

ATENÇÃO

Consultar o manual de instruções antes de utilizar o equipamento

No presente manual, se as instruções que precedem este símbolo não forem respeitadas ou realizadas de forma correcta, podem ocorrer ferimentos pessoais ou danos no equipamento e/ou nas instalações.

AVVERTENZE / SIMBOLI

PERICOLO

Un collegamento errato del dispositivo può provocare morte, lesioni gravi nonché rischio di incendio. Prima di collegare il dispositivo leggere attentamente il manuale. Osservare tutte le istruzioni relative

all’installazione e all’operatività durante l’uso di questo strumento. L’installazione, operatività e manutenzione di questo strumento devono essere realizzate solamente da

personale qualificato. Il Codice Elettrico Nazionale definisce una persona qualificata come “colui che ha familiarità con la costruzione e operatività del dispositivo e con i rischi che ne possano derivare”.

ATTENZIONE

Consultare il manuale di istruzioni prima di utilizzare il dispositivo

Qualora le istruzioni riportate nel presente manuale precedute da questo simbolo non vengano osservate o realizzate correttamente, possono provocare danni personali o danneggiare il dispositivo e/o gli impianti.

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CONTENTS

1.- GENERAL DESCRIPTION OF THE METER ..................................................................... 7

1.1.- INTRODUCTION ........................................................................................................ 7

1.2.- METER VERSIONS ................................................................................................... 8

1.3.- METROLOGY ............................................................................................................ 9

1.4.- MEASURED MAGNITUDES ...................................................................................... 9

1.5.- NOMINAL, MAXIMUM AND MINIMUM OPERATING CONDITIONS......................... 9

1.5.1.- ELECTRICAL PARAMETERS ........................................................................... 9

1.5.2.- ENVIRONMENTAL PARAMETERS ................................................................ 10

1.6.- BUILT FEATURES ................................................................................................... 10

1.6.1.- GENERAL INFORMATION ............................................................................. 10

1.6.2.- ENVIRONMENTAL CHARACTERISTICS ....................................................... 10

1.6.3.- VOLTAGE CONNECTION .............................................................................. 10

1.6.4.- SEALS ............................................................................................................. 10

1.6.5.- WIRE COVER (DEPENDING ON VERSION) ................................................. 11

1.6.6.- TERMINAL COVER (DEPENDING ON VERSION) ........................................ 11

1.6.7.- TERMINAL BOX .............................................................................................. 11

1.7.- DATA PRESENTATION ........................................................................................... 12

1.8.- VERIFICATION IMPULSES ..................................................................................... 14

1.9.- BUTTON .................................................................................................................. 14

1.10.- NAMEPLATE ......................................................................................................... 14

1.11.- ENCLOSURE ................................................................................................ ......... 15

1.12.- CONNECTION ....................................................................................................... 15

1.13.- AUXILIARY CONTACTS (DEPENDING ON VERSION) ........................................ 15

1.13.1.- VERSION WITH TARIFF INDICATOR OUTPUT ................................ .......... 15

1.13.2.- VERSION WITH IMPULSE INPUT ................................................................ 15

1.13.3.- VERSION WITH LEAKAGE CURRENT MEASUREMENT ........................... 16

1.13.4.- VERSION WITH OPTOCOUPLER OUTPUT ................................................ 16

1.14.- REAL-TIME CLOCK ............................................................................................... 16

1.15.- RESERVE POWER ................................................................................................ 16

1.16.- OPTICAL COMMUNICATION PORT ..................................................................... 16

1.17.- PLC COMMUNICATION PORT (DEPENDING ON MODEL) ................................. 16

1.18.- RS232-RS485 COMMUNICATION PORTS ........................................................... 16

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1.19.- ETHERNET COMMUNICATION PORT (DEPENDING ON MODEL) .................... 17

1.20.- RESET ................................................................................................................... 17

1.21.- CONTRACTS ......................................................................................................... 17

1.21.1.- NUMBER AND CONTRACTS ASSIGNMENT .............................................. 17

1.21.2.- CONTRACT PARAMETERS ......................................................................... 17

1.22.- BILLING CLOSURES ............................................................................................. 19

1.23.- MAXIMETER .......................................................................................................... 20

1.24.- DEFINED, ACTIVE AND LATENT CONTRACTS .................................................. 20

1.25.- MODIFYING CONTRACTS .................................................................................... 20

1.25.1.- MODIFYING AN ACTIVE CONTRACT ......................................................... 21

1.25.2.- MODIFYING A LATENT CONTRACT ........................................................... 21

1.25.3.- DELETING CONTRACTS ............................................................................. 22

1.26.- LOAD CURVE ........................................................................................................ 22

1.27.- POWER EXCESSES ............................................................................................. 22

1.28.- EVENTS ................................................................................................................. 23

1.29.- DAYLIGHT SAVING TIME ..................................................................................... 23

1.30.- FEATURES ............................................................................................................ 24

1.31.- SAFETY ................................................................................................................. 26

1.31.1.- TAMPERING DETECTOR ............................................................................ 26

1.31.2.- PROTECTION OF THE INFORMATION STORED IN MEMORY ................. 26

1.31.3.- SEALS ........................................................................................................... 27

1.32.- MEASUREMENT VALIDATION CRITERIA ........................................................... 27

1.32.1.- TIME SYNCHRONIZATION WITH DRIFT > T1 = 30 SECONDS .................. 27

1.32.2.- TIME SYNCHRONIZATION WITH DRIFT >10 MINUTES ............................ 27

1.32.3.- COMMUNICATION FAILURE BETWEEN METER AND ANALYZER ........... 27

1.32.4.- POWER FAIL IN ONE OR MORE PHASES ................................................. 28

1.33.- APPLICABLE STANDARDS .................................................................................. 28

2.- METER CALCULATIONS ................................................................................................ 29

2.1.- NOMINAL VOLTAGE ............................................................................................... 29

2.2.- NOMINAL CURRENT .............................................................................................. 29

2.3.- APPARENT POWER ............................................................................................... 29

2.4.- ACTIVE POWER ...................................................................................................... 29

2.5.- REACTIVE POWER ................................................................................................. 29

2.6.- POWER FACTOR .................................................................................................... 29

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2.7.- MAXIMUM DEMAND ............................................................................................... 29

2.8.- ENERGY .................................................................................................................. 30

2.9.- QUALITY SERVICE ................................................................................................. 30

2.9.1.- VOLTAGE OUT OF LIMITS ............................................................................ 30

2.9.2.- SUPPLY INTERRUPTIONS ............................................................................ 31

3.- METER OPERATION ....................................................................................................... 32

3.1.- NAVIGATION AND VIEWING MODES .................................................................... 32

3.1.1.- STAND-BY MODE .......................................................................................... 32

3.1.2.- READ MODE ................................................................................................... 32

3.2.- SCREEN DEFINITION ............................................................................................. 34

3.2.1.- STAND BY MODE SCREEN ........................................................................... 34

3.2.2.- MENU SCREENS ........................................................................................... 35

3.2.3.- SPECIAL FUNCTIONS ................................................................................... 44

4.- COMMUNICATIONS ................................ ................................ ................................ ........ 47

4.1.- RS-232 COMMUNICATION ..................................................................................... 47

4.2.- RS-485 COMMUNICATION ..................................................................................... 47

4.3.- ETHERNET COMMUNICATION ................................ ................................ .............. 48

5.- EXPANSION MODULES .................................................................................................. 49

5.1.- 4 RELAY OUTPUTS (TARIFF INDICATOR) ............................................................ 49

5.2.- 2 RELAY OUTPUTS / 4 PULSE INPUTS ................................................................. 50

5.3.- 4 PULSE INPUTS .................................................................................................... 50

5.4.- EARTH LEAKAGE MEASUREMENT ....................................................................... 50

5.5.- 2 RELAY OUTPUTS/ 2 PULSE OUTPUTS/ 2 PULSE INPUTS ............................... 50

6.- READING AND PARAMETRIZATION SOFTWARE ........................................................ 51

7.- INSTALLATION AND START-UP .................................................................................... 51

7.1.- INSTALLATION ........................................................................................................ 51

7.2.- METER CONNECTION DIAGRAMS ........................................................................ 51

8.- MAINTENANCE ................................................................................................ ............... 52

9.- LIABILITY LIMITATIONS.................................................................................................. 52

10.- TECHNICAL ASSISTANCE SERVICE ................................................................ ............ 53

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1.- GENERAL DESCRIPTION OF THE METER

1.1.- Introduction

Cirwatt B is a three-phase static meter for metering purposes. Class B for active energy (Class 1 as IEC 62052-11 and IEC 62053-21) and Class 2 for reactive energy (IEC 62053-23) in compliance with MID directive (EN 50470) with optional PLC, GSM/GPRS, Ethernet, RS232 and RS485 communications.

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METER TYPE

TBT STD semi-indirect

TBT STD Direct

4 wire ● ●

Connection mode

Class B Active (Class 1) / Class 2.0 Reactive

●

Accuracy

3x63,5/110V ●

Measurement voltage

3x127/220V ● ●

3x230/400V

●

● (1)

3x127/220V… 3x230/400V

●

3x57/100V… 3x230/400V

●

Transformer 1(2) A

●

Measurement current

Transformer 2,5(10) A

●

Transformer 5(10) A

●

Transformer 1(6) A

●

Transformer 1(10) A

●

Direct 10(100) A

●

Direct 5(60) A ●

Direct 10(120) A

●

Direct 15(120) A

●

Direct 5(100) A ●

50Hz

Frequency

60Hz

Without communications

Communications

R1 / R2 (PLC)

RS485 / (PLC A)

R1 / R2 (PLC)

RS232 / - (PLC A)

R1 / R2 (PLC)

RS232 / - (PLC B)

R1 / R2

RS232 / RS232

R1 / R2

RS485 / RS485

R1 / R2

RS232 / RS485

R1 / R2

RS232 / Ethernet

R1 / R2

RS485/ Ethernet

Without inputs/outputs

●

Expansion modules

4 relay outputs (tariff indicator)

●

2 relay outputs / 4 pulse inputs

●

Auxiliary power supply (24-48Vd.c.)

●

4 pulse inputs ● ●

Earth leakage measurement

●

2 relay outputs/ 2 pulse outputs/ 2 pulse inputs

●

Model ● ●

Model

2 Quadrants ● ●

Quadrants

4 Quadrants ● ●

Unidirectional ● ●

No additional features

●

Extra features

With three phase internal breaker

● (1)

1.2.- Meter versions

The following table shows all of the possible options available for the Cirwatt Type B meter. This table is generic, and as such not all of the versions listed in it may currently be available.

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Active Class B (1)

Indirect / semi-indirect connection version

Itr

0,250

Ist

0,010

min

0,050

In / I

ref

5,000

max

10,000

Direct connection version

Itr

1,000

Ist

0,040

min

0,500

In / I

ref

10,000

max

100,000

(1) Option only available for direct meters with three phase internal relay.

Example: The code 410UD1A90B10 represents a Type B Standard meter, Class B for active energy (Class 1) and Class 2 for reactive

energy, with asymmetric connection, 50Hz, 4 quadrants; with supply/ voltage between 3 x 127(230)V and 3 x 230(400)V and 10(100) A , with RS232 and RS485 communications; without expansion module or extra features.

1.3.- Metrology

The metrological characteristics for the Cirwatt Three-Phase Type B (TBT) are:

The current sensor is of the current transformer type. Current ranges:

1.4.- Measured magnitudes

The meter is able to measure the following variables:

Imported and exported active and reactive energy in the four quadrants. Active and Reactive Power. Instantaneous current and voltage. Cos .

1.5.- Nominal, maximum and minimum operating conditions

1.5.1.- Electrical parameters

Reference voltage (U Operating voltages

o minimum: 80% U o maximum: 120% U

): 3x57/100V to 3x230/400V (depending on version)

ref

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Reference frequency: 50-60 Hz Absorbed power per phase: <2W; <10VA for Ib, U

(without expansion modules)

ref

1.5.2.- Environmental parameters

Minimum temperature: -40 ºC Maximum temperature: +70 ºC; 95% relative humidity.

1.6.- Built features

1.6.1.- General information

The meter has an insulating enclosure with class II protection and double insulation. As specified in the directives 2002/96/CE and 2002/95/CE, none of the materials or

substances listed in them are used. The materials used are fire retardant, halogen free and with low emissions of opaque, toxic or corrosive fumes. The running of the equipment is not affected by the presence of external magnetic fields.

The meter manufacturer certifies that, at a temperature of 35ºC, the device will have a minimum service life of 20 years.

1.6.2.- Environmental characteristics

The meter provides:

Protection levels provided by the enclosures, Code IP51, CEI 60529:2001 standard. Protection against salt mist, standard UNE-EN 60068-2-11:2000. Resistance against ultraviolet rays, standard UNE-EN 60068-2-5:2000.

1.6.3.- Voltage connection

The jumper internally separates the voltage and current circuits, making it impossible to manipulate them externally.

In the indirect and semi-indirect connection models, the voltage and current circuits are separated galvanically.

1.6.4.- Seals

The cover and the lower slot of the meter are closed, it being impossible to open or insert foreign objects without breaking the enclosure. In addition, the device is equipped with all the regulation seals: on the meter cover, the sealable button and the wire cover.

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1.6.5.- Wire cover (depending on version)

The meters feature an opaque cover over the upper part of the terminal box, the fixing screws and the connection conductors.

The bottom part of the cover is designed in such a way that it can be easily broken to allow the wires to be partially exposed whilst protecting access to the terminals.

The meter is fitted with a sensor that can detect the opening and closing of the wire cover. This detection always takes place, even if the meter is not connected to the electrical supply.

On the wire cover, the meter is fitted with a DB9 connector for a local connection using an electrical serial port.

1.6.6.- Terminal cover (depending on version)

The meters feature an opaque cover over the upper part of the terminal box and the fixing screws. The meter is fitted with a sensor that can detect the opening and closing of the terminal cover. This detection always takes place, even if the meter is not connected to the electrical supply.

1.6.7.- Terminal box Screws

The screws are of mixed type, allowing the use of both Phillips and flat screwdrivers. A double screw fixing is used, with the screws being designed to reduce the stripping caused by the numerous operations of tightening and loosening that can take place over the course of the lifetime of the meter

Terminals

All the terminals are indelibly numbered on the front, from left to right, with the function of the meter being indicated on the characteristics label situated on the meter's casing.

Auxiliary terminals

These are situated a level above the main terminals, and they are numbered from left to right, starting at 21.

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Code line

Value

Quadrant

Volatage presence/Current direction

Active tariff

Alarm

Alarm description

Communications

Reactive

Breaker element

Units

1.7.- Data presentation

Data is presented using an LCD screen specially designed for this application, where all information can be viewed, such as: energy measurements, electrical parameters, status indicators, etc.

Code line. Shows the code for the variable being displayed on the data line. Data line. Area where information about the electrical parameters, the meter, etc. is

displayed. Units. Unit of the value that is being displayed. Indicators. The meter uses the second line of each screen's display to show the

indicators. The display format is presented as follows:

 , the active quadrant (Q1,Q2,Q3,Q4)  L1+L2+L3+, indicates the presence of electrical current in each phase, along

with the corresponding flow direction:

- “+”, is used to show the power absorbed from the network.

- “–“, is used to show the power yielded to the network.

- “ “, the absence of any symbol is used to indicate that there is no load.

 PX , indicates the active period at any given moment.

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kvarh

 , indicates an alarm state. The type of alarm can be consulted on the

L40 screen.

 When a critical alarm is triggered, the device will continuously display on the

top line of the Stand-by Mode the message "ALARM". To access the different screens it will be necessary to use the read button. Depending on the alarm the following letters will appear on the display:

C: Critical alarm due to internal or external incidents directly affecting measurement. This will be flashing.

N: Non critical alarm not affecting measurement creating a meter malfunction. This will be flashing.

B: Low battery alarm. This will be flashing.

 , has three possible states:

o Off, when no communications are under way. This is the default state. o On continuously, once the meter has been associated with a

concentrator.

o Blinking, of which there are two possible variations:

 Continual regular blinking, indicating that the meter's

communications module is working correctly during the association process but that the meter has not yet been associated with the concentrator. The blinking lasts for 2 seconds: off for 1 second and on for 1 second.

 Short double blinking, indicating that the meter has a connection

and has been associated. The symbol is off for 0.3 seconds between blinks.



, indicates that the LED verifies the reactive energy measurement. Not

available on three-phase meters.



, indicates that the Circuit Breaker is open because the Power Control

(PC) feature has been activated. Not available on three-phase meters.

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1.8.- Verification impulses

The device features two verification LEDs: one for verifying the active energy, and another for the reactive energy.

The weight of the LEDs depends on the version of the meter, being 20,000 imp/kWh (kVArh) for the indirect and semi-indirect meter, and 4,000 imp/kWh (kVArh) for the direct connection meter. The LEDs remain lit when the current is below the meter's start-up current. Once the start-up current has been passed (because of the existence of either active or reactive power consumption), the LEDs turn off and emit pulses in proportion to the energy being measured, in accordance with the cadence indicated on the characteristics label.

Both LEDs have metal loops and a profile which allows them to be attached and to help position the verification port.

1.9.- Button

The device uses two buttons, employing a system of either short or long button presses. A short press is understood to be one that lasts less than 2 seconds, and a long press one that lasts more than 2 seconds. The effect of pressing each button depends on the version of the meter. One of the buttons is sealed in order to prevent the meter being tampered with by unauthorised personnel.

1.10.- Nameplate

The characteristics plate is situated on the front part of the meter, and includes all the information established in IEC 62052-11:

Manufacturer name and place of manufacture. Designation of the type and indications relating to its approval. The number of phases and the number of conductors in the circuit to which it can be

connected (e.g. three-phase 4 wire). Serial number of the meter (9 numerical characters); this is a number which uniquely

identifies each meter. Year of manufacture; the year in which the meter was built. Reference voltage, according to the assigned network voltage or the secondary voltage

of the measuring transformer to which the meter is to be connected. Reference current and maximum current; for example, 10 (100) A would indicate a

meter with a base current of 10 A and a maximum current of 100 A. Reference frequency, in Hz.

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The meter constant; the ratio of active/reactive energy pulses, which defines the

frequency of the blinking of the LED. The class index of the meter. The double square symbol , showing that it is a meter with a protection class II

isolating enclosure. The number and the arrangement of the metering elements. Barcode, in accordance with EN 207010, identifying the meter. Model ID. Manufacturer's code used to identify the meter model. With this code, the

meter's configuration is known: power, current measurement, measuring system, etc. Temperature range -40ºC…+70ºC. Minimum current. Additional metrology mark. CE mark.

1.11.- Enclosure

The dimensions of the CIRWATT enclosure, as well as its fixing points, are in accordance with the DIN 43859 and DIN 43857 standards.

1.12.- Connection

A figure showing the electrical connection is etched by laser onto the meter casing. In the event that it may be required, a brief installation manual is also included, to facilitate the initial start-up tasks.

1.13.- Auxiliary contacts (depending on version)

The meter may feature a series of auxiliary contacts with various different functions, depending on the version.

1.13.1.- Version with tariff indicator output

The meter will feature a relay-type output (250 V and 5 A AC) which indicates the activation of the programmed tariff.

1.13.2.- Version with impulse input

The meter could have up tp 4 inputs for metering impulses from other devices, such as water and gas meters, for example. The minimum impulse width time detected by the meter is 30 sec. and the maximum cadence to read is 8 impulses per second.

The inputs are self-powered at +5V, with a maximum current of 8mA per input.

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1.13.3.- Version with leakage current measurement

The meter will feature an input for connecting an external transformer from Circutor's WN series, which will allow for the reading of the differential (leakage) current existing in the installation.

1.13.4.- Version with Optocoupler output

The meter could have a optocoupler output card to send pulses related with the energy read by the meter. The maximum voltage is to apply is 24 V d.c.

1.14.- Real-time clock

The meter features a real-time clock able to maintain the date and time with a loss of accuracy of less than 0.5 seconds/day, as specified by the UNE EN 61038 standard.

The clock maintains this precision both when powered using the electricity network and when using its own battery.

1.15.- Reserve power

The meter is equipped with a battery that allows the real-time clock to continue running. This battery is non-removable and is designed to provide energy for a period of 5 years whilst the meter is otherwise without power. When the meter is powered as normal, the battery consumption is practically zero. The use of laser-sealed batteries ensures minimum autodischarge, making it possible to guarantee the battery for the 20 years of service life of the meter.

1.16.- Optical communication port

The equipment, in all the different versions, features an optical serial communications port, in accordance with the UNE IEC 62056-21:2003 standard. The communications port is fully compatible with the optical ports approved by the major electricity companies.

The surface of the cover includes a profile for the correct fastening and placement of the optical ports.

1.17.- PLC communication port (depending on model)

The Cirwatt Type B meter can be fitted with an advanced communications system for communicating over the electrical distribution network (PLC). This system allows meters to be networked without the need for extra wiring, with the subsequent cost savings in the reading processes and the ability to carry out remote management. It is based on DCSK modulation and a series of repeaters.

1.18.- RS232-RS485 Communication ports

The meter can be fitted with RS232 or RS485 serial communications. Up to two totally independent channels, with speeds from 9600 up to 38400 baud, can be made available.

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