Camille Bauer CENTRAX CU3000, CENTRAX CU5000 Device Handbook

in Bearbeitung

Camille Bauer Metrawatt AG

http://www.camillebauer.com

Device handbook

CENTRAX CU3000 / CU5000

Operating Instructions CENTRAX CU3000 / CU5000 (2018-11)

Aargauerstrasse 7 CH-5610 Wohlen / Switzerland

Phone: +41 56 6 18 21 11 Telefax: +4 1 56 618 35 35

E-Mail: info@cbmag.com

Legal information

Warning notices

In this document warning notices are used, which you have to observe to ensure personal safety and to prevent damage to property. Depending on the degree of danger the following symbols are used:

If the warning notice is not followed death or severe personal injury will result.

If the warning notice is not followed damage to property or severe personal injury may result.

If the warning notice is not followed the device may be damaged or

may not fulfill the expected functionality.

Qualified personnel

The product described in this document may be handled by personnel only, which is qualified for the respective task. Qualified personnel have the training and experience to identify risks and potential hazards when working with the product. Qualified pers onn el are als o able to understand and follow the given safety and warning notices.

Intended use

The product described in this document may be used only for the application specified. The maximum electrical supply data and ambient conditions specified in the technical data section must be adhered. For the perfect and safe operation of the device proper transport and storage as well as professional assembly, installation, handling and maintenance are required.

Disclaimer of liability

The content of this document has been reviewed to ensure correctness. Nevertheless it may contain errors or inconsistencies and we cannot guarantee completeness and correctness. This is especially true for different language versions of this document. This document is regularly reviewed and updated. Necessary corrections will be included in subsequent version and are available via our webpa ge http://www.camillebauer.com

Feedback

If you detect errors in this document or if there is necessary information missing, please inform us via e-mail to: customer-support@camillebauer.com

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Contents

1. Introduction .................................................................................................................................................... 5

1.1 Purpose of this document .......................................................................................................................... 5

1.2 Scope of supply ......................................................................................................................................... 5

1.3 Further documents ..................................................................................................................................... 5

2. Safety notes .................................................................................................................................................... 6

3. Device overview ............................................................................................................................................. 6

3.1 Brief description ......................................................................................................................................... 6

3.2 Available measurement data ..................................................................................................................... 6

4. Mechanical mounting .................................................................................................................................... 7

4.1 CENTRAX CU3000 ................................................................................................................................... 7

4.2 CENTRAX CU5000 ................................................................................................................................... 8

5. Electrical connections ................................................................................................................................... 9

5.1 General safety notes.................................................................................................................................. 9

5.2 Terminal assignments of the I/O extensions ...........................................................................................10

5.2.1 CENTRAX CU3000 .........................................................................................................................10

5.2.2 CENTRAX CU5000 .........................................................................................................................11

5.3 Possible cross sections and tightening torques ......................................................................................11

5.4 Inputs .......................................................................................................................................................12

5.5 Power supply ...........................................................................................................................................24

5.6 Relays ......................................................................................................................................................24

5.7 Digital inputs ............................................................................................................................................24

5.8 Digital outputs ..........................................................................................................................................25

5.9 Analog outputs .........................................................................................................................................26

5.10 Fault current detection .............................................................................................................................27

5.11 Modbus interface RS485 ..........................................................................................................................29

5.12 Uninterruptible power supply (UPS) ........................................................................................................29

5.13 GPS time synchronization ........................................................................................................................30

6. Commissioning ............................................................................................................................................32

6.1 Parametrization of the device functionality ..............................................................................................33

6.2 Operating LED (CU5000 only) .................................................................................................................33

6.3 Installation check .....................................................................................................................................33

6.4 Ethernet installation .................................................................................................................................35

6.4.1 Settings ...........................................................................................................................................35

6.4.2 Connection of the standard interface ..............................................................................................37

6.4.3 Connection of the IEC61850 interface ............................................................................................38

6.4.4 MAC addresses ..............................................................................................................................38

6.4.5 Communication tests ......................................................................................................................38

6.4.6 Resetting the communication settings of the CU5000 ....................................................................39

6.5 Protection against device dat a chang ing .................................................................................................39

7. Operating the device ....................................................................................................................................40

7.1 Operating elements .................................................................................................................................40

7.2 Selecting the information to display .........................................................................................................40

7.3 Measurement displays and used symbols ..............................................................................................41

7.4 Resetting measurement data ..................................................................................................................43

7.5 Configuration ...........................................................................................................................................43

7.5.1 Configuration at the device ................................................................................................................43

7.5.2 Configuration via web browser ..........................................................................................................44

7.6 Monitoring fault-currents ..........................................................................................................................46

7.7 Data recording .........................................................................................................................................48

7.7.1 Periodical data ................................................................................................................................48

7.7.2 Events .............................................................................................................................................51

7.7.3 Disturbance recorder ......................................................................................................................52

7.7.4 Micro SD card (CU3000 only) .........................................................................................................54

7.8 Timeouts ..................................................................................................................................................55

8. CODESYS Quick Start .................................................................................................................................56

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8.1 CODESYS development environment .................................................................................................... 56

8.2 CENTRAX device description ................................................................................................................. 56

8.3 Create a project ...................................................................................................................................... 57

8.4 CU3000/CU5000 Device tree ................................................................................................................. 58

8.5 Selection of the I/O extension modules .................................................................................................. 58

8.6 Using the Modbus master functionality ................................................................................................... 59

8.7 Creating the CODESYS application ....................................................................................................... 63

8.7.1 Using remanent variables .................................................................................................................. 63

8.7.2 Using the data logger ......................................................................................................................... 63

8.8 Creating own visualizations .................................................................................................................... 65

8.8.1 Adding a visualization to the project ................................................................................................ 65

8.8.2 Target visualization (TargetVisu) .................................................................................................... 65

8.8.3 WEB visualizations (WebVisu) ........................................................................................................ 66

8.9 Establishing a connection to the device ................................................................................................. 67

8.10 Loading the application to the device ...................................................................................................... 68

8.11 Loading the application on-site................................................................................................................ 71

8.11.1 Creating a boot application ............................................................................................................. 71

8.11.2 Deleting the active application ........................................................................................................ 71

8.11.3 Loading the application ................................................................................................................... 71

8.11.4 Starting the app lic a tio n .................................................................................................................... 72

8.11.5 Resetting the active application ...................................................................................................... 72

8.12 Reset ...................................................................................................................................................... 73

8.13 Project management ............................................................................................................................... 74

8.14 Services .................................................................................................................................................. 74

8.13 Example projects .................................................................................................................................... 74

9. Service, maintenance and disposal .......................................................................................................... 75

9.1 Calibration and new adjustment ............................................................................................................. 75

9.2 Cleaning .................................................................................................................................................. 75

9.3 Battery ..................................................................................................................................................... 75

9.4 Disposal .................................................................................................................................................. 75

10. Technical data ............................................................................................................................................. 76

11. Dimensional drawings ................................................................................................................................ 82

Annex .................................................................................................................................................................. 83

A Description of measured quantities .......................................................................................................... 83

A1 Basic measurements .............................................................................................................................. 83

A2 Harmonic analysis .................................................................................................................................. 87

A3 System imbalance .................................................................................................................................. 88

A4 Mean values and trend ........................................................................................................................... 89

A5 Meters ..................................................................................................................................................... 90

B Display matrices .......................................................................................................................................... 91

B0 Used abbreviations for the measurements ............................................................................................. 91

B1 Display matrices for single phase system .............................................................................................. 95

B2 Display matrices for split-phase (two-phase) systems ........................................................................... 96

B3 Display matrices for 3-wire system, balanced load ................................................................................ 97

B4 Display matrices for 3-wire system, balanced load, phase shift ............................................................. 98

B5 Display matrices for 3-wire systems, unbalanced loa d .......................................................................... 99

B6 Display matrices for 3-wire systems, unbalanced load, Aron ............................................................... 100

B7 Display matrices for 4-wire system, balanced load .............................................................................. 101

B8 Display matrices for 4-wire systems, unbalanced loa d ........................................................................ 102

B8 Display matrices for 4-wire system, unbalanced lo ad, O pen-Y ............................................................ 103

C Logic functions .......................................................................................................................................... 104

D FCC statement ........................................................................................................................................... 105

INDEX ................................................................................................................................................................ 106

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1. Introduction

1.1 Purpose of this document

This document describes the universal measurement device for heavy-current quantities CENTRAX CU3000 / CU5000. It is intended to be used by:

• Installation personnel and commissioning engineers

• Service and maintenance personnel

• Planners

Scope

This handbook is valid for all hardware versions of the CU3000 / CU5000. Some of the functions described in this document are available only, if the necessary optional components are included in the device.

Required knowledge

A general knowledge in the field of electrical engineering is required. For assembly and installation of the device knowledge of applicable national safety regulations and installation standard is required.

1.2 Scope of supply

• Measurement device

• Safety instructions (multiple languages)

• Mounting set: 2 mounting clamps (CU3000 only)

• Battery pack (optional, for devices with UPS only)

1.3 Further documents

The following documents are provided el ec tronic a lly via http://www.camillebauer.com/cu3000-en or

http://www.camillebauer.com/cu5000-en :

• Safety instructions

• Data sheet

• Modbus basics: General description of the communication protocol

• Modbus interface CENTRAX CUx000: Register description of Modbus RTU/TCP communication

• IEC61850 interface SINEAX AMx000/DM5000, LINAX PQx000, CENTRAX CUx000

PM 1001606 000 07 Device handbook CENTRAX CU3000-CU5000 5/106

2. Safety notes

Device may only be disposed in a professiona l manner!

The installation and commissioning should only be carried out by trained personnel. Check the following points before commissioning: – that the maximum values for all the connections are not exceeded, see "Technical data"

section, – that the connection wires are not damaged, and that they are not live during wiring, – that the power flow direction and the phase rotation are correct. The instrument must be taken out of service if safe operation is no longer possible (e.g. visible

damage). In this case, all the connections must be switched off. The instrument must be returned to the factory or to an authorized service dealer.

It is forbidden to open the housing and to make modifications to the instrument. The instrument is not equipped with an integrated circuit breaker. During installation check that a labeled switch is installed and that it can easily be reached by the operators.

Unauthorized repair or alteration of the unit invalidates the warranty.

3. Device overview

3.1 Brief description

The CENTRAX CU3000/CU5000 is a com pr ehens ive ins trument for the universal measurement and monitoring in power systems , supplemented by a freely programmable control application based on CODESYS. A full parameterization of all functions of the device is possible directly at the device (for versions with display) or via web browser. The control application is created using the CODESYS development environment, can access all measurement data of the device, process these values logically and mathematically and pass the results via bus or analog or digital outputs.

Using additional, optional components the opportunities of the device may be extended. You may choose from I/O extensions, communication interfaces and data logging. The PLC functionality is available in three performance classes. The nameplates on the device give further details about the present version.

3.2 Available measurement data

The device provides measurements in the following subcategories:

a) Instantaneous values: Present TRMS values and associated min/max values b) Energy: Power mean-values with trend and history as well as energy meters. With the data logger

option “periodical data” mean-value progressions (load profiles) and periodical meter readings are

available as well. c) Harmonics: Total harmonic distortion THD/TDD, individual harmonics and their maximum values d) Phasor diagram: Overview of all current and voltage phasors and phase sequence check e) Waveform of current and voltage inputs f) Events: Disturbance recordings if the corresponding option is implemented.

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4. Mechanical mounti ng

Please ensure that the operating temperature limits are not exceeded when determining the place of mounting (place of measurement).

4.1 CENTRAX CU3000

► The CU3000 is designed for panel mounting

Dimensional drawing CU3000:

See section 11

Panel cutout CU3000

Mounting of the device

The device is suitable for panel widths up to 8mm.

a) Slide the device into the cutout from

the outside

b) From the side slide in the mounting

clamps into the intended openings and pull them back about 2 mm

c) Tighten the fixation screws until the

device is tightly fixed with the panel

Demounting of the device

The demounting of the device may be performed only if all connected wires are out of service. Remove all

plug-in terminals and all connections of the current and voltage inputs. Pay attention to the fact, that current transformers must be shortened before removing the current connections to the device. Then demount the device in the opposite order of mounting.

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4.2 CE NT RAX CU5000

The device can be clipped onto a top-hat rail according to EN 60715.

Dimensional drawing CU5000: See section 11

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5. Electrical connections

Ensure under all circumstances that the leads are free of potential when connecting them!

5.1 General safety notes

Please observe that the data on the type plate must be adhered to!

The national provisions have to be observed in the installation and material selection of electric lines, e.g. in Germany VDE 0100 “Conditions concerning the erection of heavy current facilities with rated voltages below 1000 V”!

Nameplate of a CU3000 with

• Ethernet interface

• Modbus/RTU interface

• 4 relay outputs

• 4 analog outputs

Nameplate of a CU5000 with

• TFT display

• Ethernet interface

• Modbus/RTU interface

• 2 relay outputs

• 4 analog outputs

• UPS

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Symbol Meaning

CE conformity mark. The device fulfills the requirements of the applicable EU

Measurement category CAT III for current / voltage inputs, power supply and relay

Device may only be disposed of in a professional manner!

Double insulation, device of protection class 2

directives. Caution! General hazard point. Read the operating instructions.

General symbol: Power supply

General symbol: Input General symbol: Output

CAT III

outputs

5.2 Terminal assignments of the I/O extensions

5.2.1 CENTRAX CU3000 Function Option 1 Option 2 Option 3 Option 4

2 relay outputs

1.1: 51,52,53

1.2: 55,56,57

1.1: 56(+), 57(-)

2 analog outputs

1.2: 55(+), 57(-)

1.1: 56(+), 57(-)

1.2: 55(+), 57(-)

4 analog outputs

1.3: 52(+), 53(-)

1.4: 51(+), 53(-)

1.1: 51(-), 53(+)

1.2: 52(-), 53(+)

4 digital inputs (active)

1.3: 55(-), 57(+)

1.4: 56(-), 57(+)

2.1: 61,62,63

2.2: 65,66,67

2.1: 66(+), 67(-)

2.2: 65(+), 67(-)

2.1: 66(+), 67(-)

2.2: 65(+), 67(-)

2.3: 62(+), 63(-)

2.4: 61(+), 63(-)

2.1: 61(-), 63(+)

2.2: 62(-), 63(+)

2.3: 65(-), 67(+)

2.4: 66(-), 67(+)

3.1: 41,42,43

3.2: 45,46,47

3.1: 46(+), 47(-)

3.2: 45(+), 47(-)

3.1: 46(+), 47(-)

3.2: 45(+), 47(-)

3.3: 42(+), 43(-)

3.4: 41(+), 43(-)

3.1: 41(-), 43(+)

3.2: 42(-), 43(+)

3.3: 45(-), 47(+)

3.4: 46(-), 47(+)

4.1: 31,32,33

4.2: 35,36,37

4.1: 36(+), 37(-)

4.2: 35(+), 37(-)

4.1: 36(+), 37(-)

4.2: 35(+), 37(-)

4.3: 32(+), 33(-)

4.4: 31(+), 33(-)

4.1: 31(-), 33(+)

4.2: 32(-), 33(+)

4.3: 35(-), 37(+)

4.4: 36(-), 37(+)

1.1: 51(+), 53(-)

1.2: 52(+), 53(-)

4 digital inputs (passive)

1.3: 55(+), 57(-)

1.4: 56(+), 57(-)

2.1: 61(+), 63(-)

2.2: 62(+), 63(-)

2.3: 65(+), 67(-)

2.4: 66(+), 67(-)

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3.1: 41(+), 43(-)

3.2: 42(+), 43(-)

3.3: 45(+), 47(-)

3.4: 46(+), 47(-)

4.1: 31(+), 33(-)

4.2: 32(+), 33(-)

4.3: 35(+), 37(-)

4.4: 36(+), 37(-)

5.2.2 CENTRAX CU5000

Inputs L1(2), L2(5), L3(8), N(11), PE(16), I1(1-3), I2(4-6), I3(7-9) , IN(10-12), power supply (13-14)

I/O's, relays, RS485 connector (A, B, C/X)

Function Option 1 Option 2

2 relay outputs

2 analog outputs

4 analog outputs

4 digital inputs (active)

4 digital inputs (passive)

1.1: X1.1 / X1.2 / X1.3

1.2: X2.1 / X2.2 / X2.3

1.1: X2.2(+) / X2. 3(-)

1.2: X2.1(+) / X2. 3(-)

1.1: X2.2(+) / X2.3(-)

1.2: X2.1(+) / X2.3(-)

1.3: X1.2(+) / X1.3(-)

1.4: X1.1(+) / X1.3(-)

1.1: X1.1(-) / X1.3(+)

1.2: X1.2(-) / X1.3(+)

1.3: X2.1(-) / X2.3(+)

1.4: X2.2(-) / X2.3(+)

1.1: X1.1(+) / X1.3(-)

1.2: X1.2(+) / X1.3(-)

1.3: X2.1(+) / X2.3(-)

1.4: X2.2(+) / X2.3(-)

2.1: X3.1 / X3.2 / X3.3

2.2: X4.1 / X4.2 / X4.3

2.1: X4.2(+) / X4.3 (-)

2.2: X4.1(+) / X4.3 (-)

2.1: X4.2(+) / X4.3(-)

2.2: X4.1(+) / X4.3(-)

2.3: X3.2(+) / X3.3(-)

2.4: X3.1(+) / X3.3(-)

2.1: X3.1(-) / X3.3(+)

2.2: X3.2(-) / X3.3(+)

2.3: X4.1(-) / X4.3(+)

2.4: X4.2(-) / X4.3(+)

2.1: X3.1(+) / X3.3(-)

2.2: X3.2(+) / X3.3(-)

2.3: X4.1(+) / X4.3(-)

2.4: X4.2(+) / X4.3(-)

5.3 Possible cro ss secti ons and tightening torques

Single wire 1 x 0,5 ... 6.0mm2 or 2 x 0,5 ... 2.5mm

Multiwire with end splices 1 x 0,5 ... 4.0mm2 or 2 x 0,5 ... 2.5mm

Tightening torque

0.5…0.6Nm resp. 4.42…5.31 lbf in

Single wire 1 x 0.5 ... 2.5mm2 or 2 x 0.5 ... 1.0mm

Multiwire with end splices 1 x 0.5 ... 2.5mm2 or 2 x 0.5 ... 1.5mm

Tightening torque

0.5…0.6Nm resp. 4.42…5.31 lbf in

You may have to remove first the plug-in terminals to get access to the screw terminals of the current inputs.

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5.4 Inputs

All voltage measurement inputs must originate at circuit breakers or fuses rated 5 Amps or

The connection of the inputs depends on the configured system (connection type).

less. This does not apply to the neutral connector. You have to provide a method for manually removing power from the device, such as a clearly labeled circuit breaker or a fused disconnect switch.

When using voltage transformers you have to ensure that their secondary connections never will be short-circuited.

No fuse may be connected upstream of the current measurement inputs! When using current transformers their secondary connectors must be short-circuited

during installation and before removing the device. Never open the secondary circuit under load.

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Single-phase AC mains

L1 L2 L3

10 12 16

11 2 5 8

5 A

(UL listed)

L1 L2

10 12 16

11 2 5 8

5 A

(

UL listed)

L1 L2 L3

10 12 16

11 2 5 8

5 A

(UL listed)

Direct connection

If current I

or voltage UNE does not need to be

measured, connection of IN resp. PE can be omitted.

With current transformer

If current IN does not need to be measured, the corresponding transformer can be omitted.

If voltage U connection of PE can be omitted.

does not need to be measured,

With current and voltage transformer

If current IN or voltage UNE does not need to be measured, the corresponding transformers can be omitted.

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Three wire system, balanced load, phase shift

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(

UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

current measurement: L1, voltage measurement: L1-L2

Direct connection

With current transformer

With current and voltage transformers

In case of current measurement via L2 or L3 connect the device according to the following table:

Terminals 1 3 2 5 8

Current meas. via L2 I2(k) I2(l) L2 L3 Current meas. via L3 I3(k) I3(l) L3 L1 -

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Three wire system, balanced load, phase shift

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

1 L2 L

12 16

11 2

5 8

5 A

(

UL listed)

current measurement: L1, voltage measurement: L2-L3

Direct connection

With current transformer

With current and voltage transformers

In case of current measurement via L2 or L3 connect the device according to the following table:

Terminals 1 3 2 5 8

Current meas. via L2 I2(k) I2(l) - L3 L1 Current meas. via L3 I3(k) I3(l) - L1 L2

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Three wire system, balanced load, phase shift

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

current measurement: L1, voltage measurement: L3-L1

Direct connection

With current transformer

With current and voltage transformers

In case of current measurement via L2 or L3 connect the device according to the following table:

Terminals 1 3 2 5 8

Current meas. via L2 Current meas. via L3

I2(k)

I2(l)

I3(k) I3(l) L3 - L2

L2 - L1

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Three wire system, balanced load, current measurement via L1

L1 L

10 12 16

11 2 5 8

L1 L2 L3

5 A

(

UL listed)

10 12 16

11 2

5 8

L1 L2 L3

5 A

(UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

uUvVu

Direct connection

With current transformer

With current and voltage transformers

In case of current measurement via L2 or L3 connect the device according to the following table:

Terminals 1 3 2 5 8

Current meas. via L2 Current meas. via L3

By rotating the voltage connections the measurements U12, U23 and U31 will be assigned interchanged!

I2(k)

I2(l)

I3(k) I3(l) L3 L1 L2

L2 L3 L1

PM 1001606 000 07 Device handbook CENTRAX CU3000-CU5000 17/106

Four wire system, balanced load, current measurement via L1

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L

5 A

(UL listed)

5 A

(

UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

uUv

Direct connection

If voltage U connection of PE can be omitted.

does not need to be measured,

With current transformer

If voltage UNE does not need to be measured, connection of PE can be omitted.

With current and voltage transformer

If voltage UNE does not need to be measured, the corresponding transformer can be omitted.

In case of current measurement via L2 or L3 connect the device according to the following table:

Terminals 1 3 2 11

Current meas. via L2 Current meas. via L3

I2(k)

I2(l)

I3(k) I3(l) L3 N

L2 N

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Three wire system, unbalanced load

L1 L

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

10 12 16

11 2 5 8

5 A

(UL listed)

Direct connection

With current transformers

With current and 3 single-pole isolated voltage transformers

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Three wire system, unbalanced load, Aron connection

L1 L2 L3

12 16

11 2 5 8

L1 L2 L3

5 A

(

UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

Direct connection

With current transformers

With current and 3 single-pole isolated voltage transformers

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Four wire system, unbalanced load

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

L2 L3

12 16

2 5 8

1 L2 L3

5 A

(

UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2 L3

5 A

(UL listed)

Direct connection

If current I

or voltage UNE does not need to be

measured, connection of IN resp. PE can be omitted.

With current transformer

If voltage UNE does not need to be measured, connection of PE can be omitted.

If current I corresponding transformer can be omitted.

does not need to be measured, the

With current and voltage transformer

If current IN does not need to be measured, the corresponding transformer can be omitted.

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Four wire system, unbalanced load, Open-Y

1 L2 L3

12 16

11 2 5 8

L1 L

2 L3

5 A

(UL listed)

12 16

11 2

5 8

L1 L

2 L

5 A

(UL listed

)

L1 L2 L3

10 12 16

11 2 5 8

L1 L

5 A

(UL listed)

Direct connection

If current I

or voltage UNE does not need to be

measured, connection of IN resp. PE can be omitted.

With current transformer

If voltage UNE does not need to be measured, connection of PE can be omitted.

If current I corresponding transformer can be omitted.

does not need to be measured, the

With current and voltage transformer

If current IN does not need to be measured, the corresponding transformer can be omitted.

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Split-phase ("two phase system"), unbalanced load

L1 L2 L3

10 12 16

11 2 5 8

L1 L2

5 A

(UL listed)

L1 L2 L3

10 12 16

11 2 5 8

L1 L2

5 A

(UL listed)

L1 L2

12 16

11 2 5

L1 L2

5 A

(UL listed)

Direct connection

With current transformers

With current and voltage transformer

In systems without a primary neutral conductor a voltage transformer with a secondary center tap can also be used.

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5.5 Power supply

A marked and easily accessible curr en t limiting switch has to be arranged in the vicinity of the device for turning off the power supply. Fusing should be 10 Amps or less and must be rated for the available voltage and fault current.

5.6 Relays

When the device is switched off the relay contacts are de-energized, but dangerous voltages may be present.

Relays are available for device versions with corresponding I/O extensions only.

CU3000 CU5000

I/O extension y x

1 5 2 6 3 4 4 3

5.7 Digital inputs

The device provides a standard passive digital input. In addition, depending on the device version, there may be 4-channel passive or active digital input modules available.

Usage of the standard digital input

► Status input ► Meter tariff switching

Usage of the inputs of the optional input modules

► Counting input for pulses of meters for any kind of energy (pulse width 70…250ms) ► Operating feedback of loads for operating time counters ► Trigger and release signal for monitoring functions

Passive inputs (external power sup ply with 12 / 24 VDC required)

The power supply shall not exceed 30V DC!

CU3000 CU5000

Technical data Input current < 7,0 mA Logical ZERO - 3 up to + 5 V Logical ONE 8 up to 30 V

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Active inputs (no external power supply required)

Technical data (acc. EN62053-31, class B) Open circuit voltage ≤ 15 V Short circuit current < 15 mA Current at R

=800Ω ≥ 2 mA

CU3000 CU5000

Example with meter pulse and status inputs

5.8 Digital outputs

The device has two standard digital outputs for which an external 12 / 24 VDC power supply is required.

The power supply shall not exceed 30V DC!

Usage as digital output

► Alarm output ► State reporting ► Pulse output to an external counter (acc. EN62053-31) ► Remote controlled output

CU3000 CU5000

Recommended if input impedance of counter > 100 kΩ

Driving a counter mechanism The width of the energy pulses can be selected within a range of 30 up to 250ms, but have to be adapted

to the external counter mechanism.

Electro mechanical meters typically need a pulse width of 50...100ms. Electronic meters are partly capable to detect pulses in the kHz range. There are two types: NPN (active

negative edge) and PNP (active positive edge). For this device a PNP is required. The pulse width has to be ≥ 30ms (acc. EN62053-31). The delay between two pulses has to be at least the puls e widt h. T he smaller the pulse width, the higher the sensitivity to disturbances.

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Driving a relay Rated current 50 mA (60 mA max.)

Switching frequency (S0) ≤ 20 Hz Leakage current 0,01 mA Voltage drop < 3 V Load capacity 400 Ω … 1 MΩ

5.9 Analog outputs

Analog outputs are available for devices with corresponding I/O extensions only. See nameplate. Analog

outputs may be remote controlled.

CU3000 CU5000

Connection to an analog input card of a PLC or a control system

The device is an isolated measurement device. The individual outputs are galvanically connected, but the modules are isolated from each other. To reduce the influence of disturbances shielded a twisted-pair cables should be used. The shield should be connected to earth on both opposite ends. If there are potential differences between the ends of the cable the shield should be earthed on one side only to prevent from equalizing currents.

Under all circumstances consider as well appropriate remarks in the instruction manual of the system to connect.

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5.10 Fault current detection

Use only transformers intended for this application catalog divergent specifications may damage the measurement in

CU3000

CU5000

The current transformers including the conductor isolation must guarantee in total a reinforced or double insulation between the mains circuit connected on the primary and the measuring inputs of the device

Only one measurement range may be connected per measuring channel!

The COM connectors of both measurement channels are internally connected.

For 2mA inputs a connection monitoring (breakage) is signaled for the respective measurement channels if either the current transfomer is disconnected or the connection to the transformer is interrupted.

Each fault current module provides two channels for monitoring differential or fault currents in earthed AC current systems. In any case measurement has to be performed via suitable current transformers, a direct measurement is not possible. The module is not suited for monitoring operating currents of normally live conductors (L1, L2, L3, N).

Measurement ranges

Each channel provides two measurement ranges: a) Measurement range 1A

• Application: Direct measurement of a fault or earth wire current

• Meas. transformer: Current transformer 1/1 bis 1000/1A; 0.2 up to 1.5VA;

Instrument security factor FS5

b) Measurement range 2mA

• Application: Residual current monitoring (RCM)

• Meas. transformer: Residual current transformer 500/1 up to 1000/1A

Rated burden 100 Ω / 0.025 VA up to 200 Ω / 0.06 VA

, according to our current transformer

, or transformers that fulfill the above specification. Using transformers with

puts.

Connection

Erweiterung y x

1 5 2 6 3 4 4 3

side

implemented. An alarm state is

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Example: Fault current monitoring in a TNS system

Hints

(1) If the current transfomers for the fault current detection needs to be grounded on the secondary side

this has to be done via the COM connector.

(2) Note that all conductors have to cross the residual current transformer

in the same direction.

(3) A possible fault current flows through the protective

earth conductor (PE). It can only be detected if the PE conductor is not routed through the residual current transformer. If this cannot be avoided, e.g. due to using a multi-wire cable with all conductors, the PE conductor must be returned through the transformer.

(4) The cable or individual conductors should be routed through the

transformer as centered as possible in order to minimize measurement errors.

(5) Neither the current transformers nor the measurement leads should be mounted or installed close to

strong magnetic fields. Measurement lines should also not be laid in parallel to power lines.

(6) For measurement range 1A only: The rated output of the transformer must be chosen that it is

reached when the rated secondary current (1A) flows. Consider that the burden of the transformer is not only made up by the burden of the measurement input, but also by the resistance of the measurement lines and the self-consumption of the transformer (copper losses).

 A rated output selected too low leads to saturation losses in the transformer. The secondary

rated current can no longer be reached as the transformer reaches its limits before.

 A rated output selected too high or an exceeding instrument security factor (>FS5) may cause

damage to the measuring inputs in case of overload.

(7) For the connection of the transformer to the fault detection module use …

 Conductor cross sections of 1.0 up to 2.5mm  Pairwise twisted connections in case of short cable lengths  Shielded cables (shield grounded on one side only) in disturbed environment or in case of long

cable lengths

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5.11 Modbus interface RS485

Via the optional Modbus interface measurement data may be provided for a superior system. However, the Modbus interface cannot be used for device parameterization.

1) One ground connection only. This is possibly made within the master (PC).

Rt: Termination resistors: 120 Ω each

for long cables (> approx. 10 m)

Rs: Bus supply resistors,

390 Ω each

The signal wires (A, B) have to be t wist ed. G ND ( C/X) can be connected via a wire or via th e c abl e sc r een. In disturbed environments shielded cables must be used. Supply resistors (Rs) have to be present in bus master (PC) interface. Stubs should be avoided when connecting the devices. A pure line network is ideal.

You may connect up to 32 Modbus devices to the bus. A proper operation requires that all devices connected to the bus have equal communication settings (baud rate, transmission format) and unique Modbus addresses.

The bus system is operated half duplex and may be extended to a maximum length of 1200 m without repeater.

5.12 Uninterruptible power supply (UPS)

The battery pack for the uninterruptible power supply is supplied separately. Please note that compared to the storage temperature range of the base unit the storage temperature range of the battery pack is restricted.

Ensure that devices with uninterruptible power supply are used in an environment in accordance with the

specification

recharged.

. Outside this operating temperature range, it is not ensured that the battery pack is

Due to aging the capacity of the battery decreases. To ensure a successful operation of the device during power interuptions the batt ery needs to be replaced every 3 up to 5 years.

Potential for Fire or Burning. Do do not disassemble, crush, heat or burn the removed battery pack.

Replace battery pack with a battery pack of the same type only. Use of another battery may present a risk of fire or explosion.

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5.13 GPS time synchronization

Only use the receiver Garmin GPS 16x-LVS (article

The optional GPS connection module serves for connecting a GPS receiver as a very accurate time synchronization source for the measurement device. The GPS receiver, available as an accessory, is used as outdoor antenna to process data from multiple GPS satellites simultaneously.

GPS receiver

no. 181‘131), offered as an accessory. This device is preconfigured by us and provides the required time information (sentences) without further configuration effort .

• Protection: IPx7 (waterproof)

• Operating temperature: -30…80°C

• Storage temperature: -40…80°C

• 1Hz pulse accuracy: 1μs

• Connector: RJ45

Choosing a mounting location

For a correct operation the GPS receiver requires data from at least 3 satellites at the same time. Therefore position the receiver so that the clearest possible view of the sky and horizon in all direction is obtained. This can be on the roof of a building, at best without reception being restricted by other buildings or obstacles. Avoid mounting the receiver next to large areas of conductible material, as this may cause poor signal reception. It should be also not closer than 1 meter away from any other antenna.

If lightning protection is required, this must be provided by the user himself.

Mounting the GPS receiver

• The GPS receiver Garmi n G PS 16x -LVS can be flush mounted by means of 3 M4 screws.

• 120° distribution over a circle of ø71.6mm

• Thread length max. 8mm. Using longer

screws may damage the GPS receiver.

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+ 76 hidden pages

Camille Bauer CENTRAX CU3000, CENTRAX CU5000 Device Handbook

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Introduction

1.1 Purpose of this document

1.2 Scope of supply

1.3 Further documents

2. Safety notes

3. Device overview

3.1 Brief description

3.2 Available measurement data

4. Mechanical mounti ng

4.1 CENTRAX CU3000

4.2 CE NT RAX CU5000

5. Electrical connections

5.1 General safety notes

5.2 Terminal assignments of the I/O extensions

5.2.1 CENTRAX CU3000 Function Option 1 Option 2 Option 3 Option 4

5.2.2 CENTRAX CU5000

5.3 Possible cro ss secti ons and tightening torques

5.4 Inputs

5.5 Power supply

5.6 Relays

5.7 Digital inputs

5.8 Digital outputs

5.9 Analog outputs

5.10 Fault current detection

5.11 Modbus interface RS485

5.12 Uninterruptible power supply (UPS)

5.13 GPS time synchronization