Omicron CMC 353 Reference Manual

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CMC 353

Reference Manual

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Test Set CMC 353

Article Number: VESD 2004 - Manual Version: CMC353.AE.2 - Year: 2010

This manual is a publication of OMICRON electronics GmbH.

All rights including translation reserved. Reproduction of any kind, e.g., photocopying, microfilming, optical character recognition and/or storage in electronic data processing systems, requires the explicit consent of OMICRON electronics.

Reprinting, wholly or in part, is not permitted. The product information, specifications, and technical data embodied in this manual represent the technical status at the time of writing and are subject to change without prior notice.

We have done our best to ensure that the information given in this manual is useful, accurate and entirely reliable. However, OMICRON electronics does not assume responsibility for any inaccuracies which may be present.

The user is responsible for every application that makes use of an OMICRON product.

OMICRON electronics translates this manual from the source language English into a number of other languages. Any translation of this manual is done for local requirements, and in the event of a dispute between the English and a non-English version, the English version of this manual shall govern.

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TABLE OF CONTENTS

Preface...................................................................................................................... 7

Safety Instructions .................................................................................................. 8

1 Designated Use ............................................................................................ 11

2 Introduction .................................................................................................. 12

3 Operating the CMC 353 ............................................................................... 12

3.1 System Components ..................................................................................................... 12

3.2 Safe Use of the Connecting Cables .............................................................................. 13

3.2.1 Test Lead Adapter for Non-Safety Sockets ....................................................... 13

3.3 Regular Test Leads for Safety Sockets ......................................................................... 14

3.3.1 Terminal adapters.............................................................................................. 14

3.3.2 M4 (0.15") Cable Lug Adapters ......................................................................... 15

3.3.3 M5 (0.20") Cable Lug Adapters ......................................................................... 15

3.4 Starting the Test System ................................................................................................ 16

4 Setup and Function ..................................................................................... 19

4.1 Block Diagram ............................................................................................................... 20

4.1.1 Voltage Output (Voltage Amplifier) .................................................................... 21

4.1.2 Current Output (Current Amplifier)..................................................................... 22

4.1.3 Binary Inputs 1 - 10............................................................................................ 23

4.1.4 Binary Output..................................................................................................... 23

4.1.5 AUX DC (DC Power for Test Objects) ............................................................... 24

4.1.6 CPU ................................................................................................................... 25

4.1.7 Power Supplies (DC-DC)................................................................................... 25

4.2 Signal Generation.......................................................................................................... 25

4.2.1 Accuracy and Signal Quality .............................................................................. 26

5 Connections and Interfaces ........................................................................ 27

5.1 Front Panel Connections ............................................................................................... 27

5.1.1 Generator Combination Socket for VOLTAGE OUTPUT and CURRENT

OUTPUT ............................................................................................................ 30

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CMC 353 Reference Manual

5.2 Connections on the Back Panel .................................................................................... 32

5.2.1 Ethernet Ports ETH1 and ETH2 ........................................................................ 32

5.2.2 Ethernet / Network Settings ............................................................................... 34

5.2.3 SELV Interfaces................................................................................................. 36

5.2.3.1 External Interface ("ext. Interf.") ......................................................... 36

5.2.3.2 LL out 1-6 (Low Level Outputs 1-6) .................................................... 36

6 Technical Data .............................................................................................. 39

6.1 Main Power Supply........................................................................................................ 39

6.2 Insulation Coordination.................................................................................................. 40

6.3 Outputs .......................................................................................................................... 41

6.3.1 Extended Frequency Range .............................................................................. 42

6.3.2 Current Outputs ................................................................................................. 43

6.3.3 Voltage Outputs ................................................................................................. 48

6.3.3.1 Power Diagram for Three-Phase Operation ....................................... 49

6.3.3.2 Power Diagram for Single-Phase Operation ...................................... 50

6.3.4 Operational Limits in Conjunction with Mains Supply ........................................ 51

6.3.5 Operational Limits with Current and Voltage Amplifier in Parallel ..................... 51

6.3.6 Low Level Outputs "LL out" for External Amplifiers ........................................... 52

6.3.7 Low-Level Binary Outputs ("ext. Interf.")............................................................ 54

6.3.8 Binary Output Relays......................................................................................... 56

6.3.9 DC Supply (AUX DC)......................................................................................... 57

6.4 Inputs.............................................................................................................................. 58

6.4.1 Binary Inputs...................................................................................................... 58

6.4.2 Counter Inputs 100 kHz (Low Level) ................................................................. 61

6.5 Technical Data of the Ethernet Ports............................................................................. 62

6.6 Environmental Conditions............................................................................................... 63

6.6.1 Climate............................................................................................................... 63

6.6.2 Shock and Vibration........................................................................................... 63

6.7 Mechanical Data............................................................................................................ 63

6.8 Cleaning ........................................................................................................................ 63

6.9 Safety Standards, Electromagnetic Compatibility (EMC) and Certificates ..................... 64

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Table of Contents

7 Increasing the Output Power, Operating Modes ....................................... 65

7.1 Safety Instructions for High Current Output................................................................... 65

7.2 Single-Phase Operation of the CMC 353 ...................................................................... 66

7.2.1 1 x 32 A High Burden Mode (L-L) ...................................................................... 66

7.2.2 1 x 64 A High Current Mode (LL-LN) ................................................................. 67

7.2.3 Single-Phase Voltage ........................................................................................ 68

7.3 Operation with External Amplifiers ................................................................................. 69

8 Troubleshooting ........................................................................................... 71

8.1 Troubleshooting Guide .................................................................................................. 71

8.2 Potential Errors, Possible Causes, Remedies............................................................... 72

8.3 Overheating .................................................................................................................... 73

9 CMC 353-Related Products and Accessories ........................................... 75

9.1 CMA Current Amplifiers & CMS Voltage Amplifiers ...................................................... 75

9.2 CMControl-3 ................................................................................................................... 76

9.3 Time Synchronization Accessories................................................................................. 77

9.3.1 CMGPS.............................................................................................................. 77

9.3.2 CMIRIG-B .......................................................................................................... 79

9.4 100TX to 100FX-SC Converter ...................................................................................... 81

9.5 Wiring Accessories ......................................................................................................... 82

9.5.1 Standard Delivery Scope ................................................................................... 82

9.5.2 Optional CMC Wiring Accessory Package ........................................................ 83

9.6 Ordering Information....................................................................................................... 86

Appendix ................................................................................................................ 91

Contact Information / Technical Support .............................................................95

Index ....................................................................................................................... 97

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CMC 353 Reference Manual

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Preface

PREFACE

The purpose of this reference manual is to familiarize users with the CMC 353 test set and to show how to properly use it in various application areas.

The manual contains important tips on how to use the CMC 353 safely, properly, and efficiently. Its purpose is to help you avoid danger, repair costs, and down time as well as to help maintain the reliability and life of the CMC 353.

This manual is to be supplemented by existing national safety standards for accident prevention and environmental protection.

The reference manual should always be available at the site where the CMC 353 is used. It should be read by all personnel operating the test set.

Note: The OMICRON Test Universe software also installs a PDF version of this reference manual. It can directly be opened by a mouse-click from the help topic "User Manuals of OMICRON Test Universe".

In addition to the reference manual and the applicable safety regulations in the country and at the site of operation, the usual technical procedures for safe and competent work should be heeded.

Note: This reference manual describes the CMC 353 hardware - that is, the physical test set. In order to get familiar with the software for controlling and configuring the CMC 353, please refer to the software manuals and/or the OMICRON Test Universe Help.

For Your Safety Please Note

The CMC 353 test set can output life-hazardous voltages and currents.

Throughout the manual, this symbol indicates special safety-relevant notes/directions linked to the possibility of touching live voltages and/or currents. Please thoroughly read and follow those directions to avoid life-

hazardous

This symbol indicates potential hazards by electrical voltages/currents caused by, for example, wrong connections, short-circuits, technically inadequate or faulty equipment or by disregarding the safety notes of the following sections.

situations.

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CMC 353 Reference Manual

SAFETY INSTRUCTIONS

Before operating the CMC 353 test set, carefully read the following safety instructions.

Only operate (or even turn on) the CMC 353 after you have read this reference manual and fully understood the instructions herein.

The CMC 353 may only be operated by trained personnel. Any maloperation can result in damage to property or persons.

Rules for Use

•The CMC 353 should only be used when in a technically sound condition. Its use should be in accordance with the safety regulations for the specific job site and application. Always be aware of the dangers of the high voltages and currents associated with this equipment. Pay attention to the information provided in the reference manual and the software documentation.

•The CMC 353 is exclusively intended for the application areas specified in section 1, "Designated Use" on page 11. The manufacturer/ distributors are not liable for damage resulting from unintended usage. The user alone assumes all responsibility and risk.

• The instructions provided in this reference manual and the associated software manuals are considered part of the rules governing proper usage.

• Do not open the CMC 353 or remove any of its housing components.

Orderly Practices and Procedures

• The reference manual (or its PDF version) should always be available on site where the CMC 353 is used.

Note: The OMICRON Test Universe software installs a PDF version of this reference manual. To view the manual, start the Test Universe Help from the Start Page or any test module and navigate to the table of contents entry User Manuals (at the beginning of the table of contents). Click Hardware Manuals. In this topic you find a direct link to "CMC 353". To open the manual, click the link.

• Personnel assigned to using the CMC 353 must have read this reference manual and fully understood the instructions herein.

• Do not carry out any modifications, extensions or adaptations at the CMC 353.

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Safety Instructions

Operator Qualifications

• Testing with the CMC 353 should only be carried out by authorized and qualified personnel.

• Personnel receiving training, instruction, direction, or education on the CMC 353 should remain under the constant supervision of an experienced operator while working with the equipment.

Safe Operation Procedures

• Follow the instructions in sections 3.2 and 3.4 that describe the safe use of the connecting cables and how to set the CMC 353 into operation.

•The CMC 353 must only be used from a power outlet that has a protective earth.

• Do not block the access to safety-relevant test set components like the main power switch or the power cord. In cases of an emergency, these components need free and quick access.

• Do not connect any of the front panel VOLTAGE/CURRENT OUTPUTS 1 ... 3 or VOLTAGE OUTPUT 4, respectively, to protective earth. The N sockets, however, may be connected to protective earth.

• When connecting to the banana plug sockets, only use cables with 4 mm/0.16 " safety banana connectors and plastic housing. Always insert plugs completely.

• Before connecting and disconnecting test objects, verify that all outputs have been turned off. Never connect or disconnect a test object while the outputs are active.

• When disconnecting power supply cables or test leads, always start from the device feeding the power or signal.

• All sockets on the front panel are to be considered dangerous with working voltages up to 300 V

respective requirements to connect to the equipment.

• Red Signal Light : If the voltage on any of the four voltage outputs or on the "AUX DC" output exceeds 42 V, the associated signal light lights up.

• Do not insert objects (e.g., screwdrivers, etc.) into the sockets or into the ventilation slots.

• Do not operate the CMC 353 under wet or moist conditions (condensation).

• Do not operate the CMC 353 when explosive gas or vapors are present.

. Only use cables that meet these

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CMC 353 Reference Manual

• The SELV interfaces (SELV = Safety Extra Low Voltage) of the CMC 353 - "Host Interf.", “ETH1”, “ETH2”, "LL out" (L or "ext. Interf." - should only have external devices connected that meet the requirements for SELV equipment according to EN 60950 or IEC

60950.

• For applications drawing DC current: The load may not exceed 3 mH because of dangerous feedback current.

• When setting up the CMC 353, make sure that the air slots on the back, top, and bottom of the test set remain unobstructed.

• Voltages up to 1 kV can be present inside the CMC 353! Therefore, opening the CMC 353 is only permitted by qualified experts either at the factory or at certified external repair centers.

•If the CMC 353 is opened by the customer, all guarantees are invalidated.

• CMC 353 Ethernet functionality (see section 5.2.1, "Ethernet Ports ETH1 and ETH2" on page 32):

- Connect ETH1 and ETH2 only to Ethernet ports.

•If the CMC 353 seems to be functioning improperly, please contact the OMICRON Tecnical Support (see section "Contact Information / Technical Support" on page 95).

ow Level Outputs)

Changing the Power Fuse

• Unplug the power cord between the test set and the power source.

• The fuse is located at the back of the test set.

• Fuse type: T12.5 AH 250 V (wire fuse 5 × 20 mm).

For safety reasons please use only fuse types recommended by the manufacturer. Refer to 6.1, "Main Power Supply" on page 39 for more information.

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1DESIGNATED USE

The CMC 353 is a computer-controlled test set for the testing of:

• protection relays

• transducers

• energy meters

• PQ (power quality) analyzers.

In addition to the test functions, optional high-performance measurement functions [0 Hz (DC) ... 10 kHz] for ten analog inputs are available.

The CMC 353 is part of the OMICRON Test Universe which, in addition to the physical test set, consists of a test software for a computer with Windows current amplifiers, GPS or IRIG-B synchronization units or other accessories.

Any other use of the CMC 353 is considered improper and may result in damage to property or persons.

operating system, and, when needed, external voltage and/or

Designated Use

Features of the CMC 353:

• Output of test quantities:

-4 × voltage

- 3 x current

• Capability of protection testing with IEC 61850 devices.

• Control of external amplifiers (up to 12 additional test signals) through the low-level interface.

• Supply of DC voltages to the test object.

• Output of binary signals.

• Capture of binary signals and counter impulses.

Windows is a US registered trademark of Microsoft Corporation.

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CMC 353 Reference Manual

2INTRODUCTION

The CMC 353 is a part of the OMICRON Test Universe which, in addition to the physical test set, consists of a test software for a computer with Microsoft Windows operating system, and, when needed, external voltage and/or current amplifiers, GPS or IRIG-B synchronization units or other accessories (refer to section 9, "CMC 353-Related Products and Accessories" on page 75).

This reference manual describes the hardware of the CMC 353. The configuration and control of the CMC 353 is carried out by the test software of the OMICRON Test Universe. For more detailed information, please read the user manuals and the OMICRON Test Universe Help.

User Manuals (at the beginning of the table of contents). Click Hardware Manuals. In this topic you find a direct link to "CMC 353". To open the

manual, click the link.

3OPERATING THE CMC 353

Only operate (or even turn on) the CMC 353 after you have read this reference manual and fully understood the instructions herein.

3.1 System Components

Before operating the CMC 353 for the first time, use the packing list to verify that all components of the test system are available.

To set the CMC 353 into operation you need the following components:

• CMC 353 with (mains) power cable

• Connecting cable CMC 353 ↔ PC

• Connecting cable CMC 353 ↔ test object

• PC equipped with an Ethernet port and the OMICRON Test Universe software.

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3.2 Safe Use of the Connecting Cables

Retractable sleeve

↔

Safety socket of, for example, the CMC 353 test set.

↔

Regular test lead

Non-safety socket

Test lead adapter

3.2.1 Test Lead Adapter for Non-Safety Sockets

The optional CMC Wiring Accessory Package includes flexible test lead adapters of 5 cm/2 " length with a retractable sleeve (6 x black, 6 x red).

These test leads are to be used as adapters, only. They are intended to make the 4 mm/0.16 " banana plugs of the standard test leads fit into non-safety sockets (see illustration above).

Never directly insert one of these retractable sleeves into a CMC 353 output socket at the front of the test set. This does not comply with the

designated purpose of these leads and is contrary to the safety regulations.

Operating the CMC 353

Plug only the regular test leads of 2.0 m/6 ft. length into the CMC 353 output safety sockets.

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CMC 353 Reference Manual

Regular test lead

or to safety socket,

e.g., at test object.

CMC 353 test set

or amplifier

to terminal strip

↔

Regular test lead

Terminal adapter

3.3 Regular Test Leads for Safety Sockets

3.3.1 Terminal adapters

Use the regular test leads of 2.0 m/6 ft. length to connect the CMC 353 output to other safety sockets of, for example, amplifiers, test objects or to banana adapters in control cabinets.

The optional CMC Wiring Accessory Package includes flexible terminal adapters to connect the regular test leads to screw-clamp terminals.

The terminal adapters have blank ends. Therefore, turn off the voltage before connecting these adapters. Always insert an adapter with its blank end into the terminal strip first, and fasten it before connecting it to a test lead.

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3.3.2 M4 (0.15") Cable Lug Adapters

↔

Regular test lead

M4 (0.15") cable lug adapter

↔

Regular test lead

M5 (0.20") cable lug adapter

The optional CMC Wiring Accessory Package includes M4 (0.15") cable lug adapters to connect regular test leads to screw-clamp terminals of SEL/ABB/GE relays (and others).

The cable lugs have blank ends. Therefore, turn off the voltage before connecting such a lug. Always insert the cable lug with its blank end into the terminal strip first, and fasten it, before connecting it to a test lead.

3.3.3 M5 (0.20") Cable Lug Adapters

Operating the CMC 353

The optional CMC Wiring Accessory Package includes M5 (0.20") cable lug adapters to connect regular test leads to common and most widespread screw-clamp terminal types.

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CMC 353 Reference Manual

OMICRON-supplied connecting cable

CMC 353

3.4 Starting the Test System

The following description assumes that the computer has been set up and that the test software for the OMICRON Test Universe has been installed.

For detailed instructions about the OMICRON Test Universe software, refer to the manual "The Concept". This manual is provided in PDF format. It is available on your hard disk after the installation of OMICRON Test Universe. To view the manual, start the Test Universe Help from the Start Page or any test module and navigate to the table of contents entry User Manuals (at the beginning of the table of contents). Click Software Manuals. In this topic you find a direct link at "Getting Started with OMICRON Test Universe - The Concept". To open the manual, click the link.

This description refers both to the computer and to the CMC 353. It does not take into consideration any external devices. If the system is driven by external amplifiers, follow the instructions in section 7.3, "Operation with External Amplifiers" on page 69.

When setting up the CMC 353, it is important to make sure that the ventilation slots remain unobstructed.

Figure 3-1: Connecting the CMC 353 to the computer

Connecting the System Components:

1. Connect the CMC 353 to the PC with the supplied connecting cable1:

• CMC 353: Connector ETH1 or ETH2 at the rear side of the test set

• PC: Ethernet port (labeled “EtherNET”, “LAN” or similar).

To ensure the required EMC compatibility, we recommended to use the OMICRON-supplied cable, only.

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Operating the CMC 353

For instructions to help you to incorporate network-capable CMC test sets into a computer network, please refer to the manual Network- based CMC Test Sets. This manual is provided in PDF format. It is available on your hard disk after the installation of OMICRON Test Universe. Its name is Network-based test sets.pdf.

To view the manual, start the Test Universe Help from the Start Page or any test module and navigate to the table of contents entry User

Manuals (at the beginning of the table of contents). Click Read Me First. In this topic you find a direct link to "Network-based CMC Test

Sets". To open the manual, click the link.

2. Connect the CMC 353 test set to the mains.

3. Turn on both devices.

4. Start the OMICRON Tes t U niv e rs e software.

A comprehensive hardware test is carried out on the CMC 353. In the process, switching sounds from relays in the CMC test set can be heard. If any irregularities are determined during the course of this self-test, the software displays a corresponding error message on the PC monitor (refer to section 8, "Troubleshooting" on page 71).

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CMC 353 Reference Manual

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Setup and Function

4SETUP AND FUNCTION

The computer-controlled OMICRON test system employs the concept of a functional division between the software running on the computer and the CMC 353 hardware connected to the test object.

OMICRON Test Universe test software running on the computer

• controls the test signals

• processes measurement data

• creates reports

• generates data entries.

The CMC 353 test set

• creates test signals (currents, voltages, binary signals)

• measures the reaction (analog and binary) from the test object

• supplies DC-current to test objects.

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CMC 353 Reference Manual

Main Group

SELV Group

AUX DC

Internal

Supplies

VOLTAGE

CURRENT

CPU

System Control

(Signa l Generato r)

Mains

Host

Interface

DC DC

reinforced isolation

reinforc ed isol ation

Ext.

Ampl.

Counter

1,2

Bin. Out

11...14

CMGPS

IRIG-B

421

BINARY OUTPUT

LL out

1-6

ext.

Interf.

working isolation

4.1 Block Diagram

Figure 4-1: Main block diagram of the

CMC 353

0...264V

4 x 0...300V

VOLTAGE

OUTPUT

3 x 0...32A

CURRENT

OUTPUT

Contro l AUX DC

BINARY INPUT

Contro l

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Figure 4-2: Voltage amplifier (voltage outputs)

The block schematic diagram in figure 4-1 shows all externally accessible signals with gray shading. Every gray area represents a galvanic group that is isolated from all of the other galvanic groups.

The power connection ("power supply group") and the connections for “SELV group” (SELV = S

afety Extra Low Voltage) are available on the back of the test set. All other gray shaded groups are available on the front of the test set. The safety relevant isolated circuits (power ↔ SELV, power ↔ front plate, and front plate ↔ SELV) are marked as "reinforced isolation" in the block diagram.

4.1.1 Voltage Output (Voltage Amplifier)

Setup and Function

The four voltage outputs have a common neutral N and are galvanically separated from all other outputs of the CMC 353.

The voltage amplifier and the current amplifiers are linear amplifiers with DC coupling. The voltage outputs work in two ranges:

• Range 1: 4 x 0 ... 150 V

• Range 2: 4 x 0 ... 300 V

Protecting the Voltage Outputs

All voltage outputs are protected for open circuits, L-N short-circuits, and overload. Should the heat sink overheat, a thermal switch turns off all outputs.

Overload Warning Flagged in the Software

When a voltage output is overloaded, a corresponding warning is displayed in the user interface of the test software of the OMICRON Tes t Un i vers e (like described in, for example, section 8.3, "Overheating" on page 73).

Do not connect any of the VOLTAGE OUTPUTS 1 ... 3 or VOLTAGE OUTPUT 4, respectively, to protective earth. The N sockets, however, may be connected to protective earth.

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CMC 353 Reference Manual

The three current outputs have a common N and are galvanically separated from all other connections of the CMC 353.

4.1.2 Current Output (Current Amplifier)

Figure 4-3: CMC 353 current outputs

The current amplifiers are implemented as switched mode amplifiers with DC coupling. With this technology it is possible to achieve high power density in a very compact structure. The DC coupling enables a precise reproduction of transients or DC offsets.

Protecting the Current Outputs

All current outputs are protected for open circuits, short-circuits, and overload. If the heat sink overheats, a thermo switch turns off all outputs. The output sockets are internally protected against currents > 45 A

(32A

; the CMC 353 switches off with the error message "current on

rms

peak

neutral too high").

In non-operative state, relay contacts (as illustrated in figure 5-3) protect the current amplifier from external power by shortening the outputs to N.

Caution: If there is an in-feed from an external source, the current outputs can be damaged or destroyed.

Overload Warning Flagged in the Software

When a current output is overloaded, a corresponding warning is displayed in the user interface of the test software of the OMICRON Test Universe (like described in, for example, section 8.3, "Overheating" on page 73).

Please see also section 7.1, "Safety Instructions for High Current Output" on page 65 about

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Figure 4-4:

Four binary outputs are available for use as potential-free relay contacts.

More detailed information about the configuration of the binary outputs can be found in the OMICRON Test Universe Help.

Binary inputs 1 - 10

Setup and Function

4.1.3 Binary Inputs 1 - 10

The ten binary inputs are divided into five groups of two, each group galvanically separated from the others.

The input signals are monitored with a time resolution of 100 µs and then evaluated in the CPU.

The binary inputs are configured from the Hardware Configuration module of the OMICRON Tes t Un iver se software. When doing so, it can be specified whether the contacts are potential-sensitive or not. When the contacts are potential-sensitive, the expected nominal voltage and pick-up threshold can be set for each binary input.

Figure 4-5: Binary outputs

Moreover, the binary inputs 1 – 10 can be used as counter inputs for input frequencies up to 3 kHz.

More detailed information about the configuration of the binary inputs can be found in the OMICRON Test Universe Help.

4.1.4 Binary Output

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CMC 353 Reference Manual

4.1.5 AUX DC (DC Power for Test Objects)

Figure 4-6: DC power for test objects (AUX DC)

Test objects that require an auxiliary DC voltage can be fed from the AUX DC output.

The DC voltage that is applied over the AUX DC output can vary from 0 to 264 Volts and is configured using the software.

The AUX DC output is galvanically separated from all other outputs.

The power-up default

By means of the test tool AuxDC you can set a so-called power-up default. When the test set is powered-up the next time, the auxiliary DC output is automatically set to this default value. This default value applies until it is deliberately changed again.

Setting a power-up default value means, that immediately after the test set is switched on, this voltage is applied to the auxiliary DC voltage output, regardless whether a computer is connected to it or not.

Caution: The selected voltage can be life-threatening!

Consider storing a power-up default voltage of higher than 0 V a potential danger to future users that may connect other devices to this CMC test set.

We strongly recommend to always set the default value to 0 V before storing the device, or to otherwise attach a warning label to the device housing, such as "This unit outputs an AuxDC voltage of ___V immediately after powering-up".

If the voltage on the "AUX DC" output exceeds 42 V, the associated signal light lights up.

More information about the configuration of the AUX DC supply can be found in the OMICRON Test Universe AuxDC Help.

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4.1.6 CPU

The CMC 353 CPU (Central Processing Unit) carries out the following tasks:

• Communication with the computer or a network via the Ethernet ports

“ETH1” and “ETH2”.

• Digital signal generation for all outputs of the test set (including control

signals for external amplifiers).

• Generation of a high-accuracy central clock signal with synchronization

options using the CMGPS synchronization unit or the CMIRIG-B interface box (refer to 9.3, "Time Synchronization Accessories" on page

77).

• Monitoring and control of all systems, including external amplifiers, if

applicable.

4.1.7 Power Supplies (DC-DC)

An AC/DC converter generates the required DC voltage from 85 to 264 VAC supply voltage (see section 6.1) and ensures adequate EMC filtering.

Setup and Function

The power supply to the different modules, that each are part of their own galvanic groups, are implemented using DC-DC converters with reinforced insulation.

4.2 Signal Generation

The generation of sine wave signals with high amplitude and phase accuracy is required in order to achieve output signals with the specified accuracy.

In order to fulfill the requirement for phase-coupled signal sources, signal generation is digitally implemented.

For this, the CMC 353 employs a high-performance digital signal processor (DSP).

With digital signal generation the system is very flexible. An exact correction of the amplitude, offset, and phase can be carried out in a digital manner through the use of device-specific parameters (i.e., gain, offset, and null phase angle on every channel).

The digital correction assures the best possible long-term drift behavior.

In addition to sine waves, any other periodic or transient signal can be generated.

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CMC 353 Reference Manual

4.2.1 Accuracy and Signal Quality

The CMC 353 is a very precise test set with excellent long-term and temperature drift behavior.

To achieve this accuracy, the philosophy was not only to solve signal generation digitally, but also to implement the distribution of signals to the various modules using digital methods. In doing so, the goal of galvanic separation of the individual generator groups was also achieved without loss of accuracy.

In achieving the amplitude accuracy, the drift behavior (temperature and long-term) is of major importance in the voltage references, the digitalanalog converters (DAC), the accurate voltage dividers in the voltage amplifiers, and the current shunts in the current amplifiers.

The actual (typical) data is in general about a factor of 3 better than the guaranteed data.

The associated exact measurement media are required for the assurance of the accuracy in the production. The measurement media used by OMICRON are regularly calibrated by an accredited calibration institute so that tracing to international standards can be assured.

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Figure 5-1:

AUX DC

Output voltage in 3 ranges from 0 - 264 V; used to supply power to test objects.

VOLTAGE OUTPUT

4x300V

rms

output of the internal voltage amplifier; outputs 1 - 3 also applied to

the generator combination socket.

BINARY OUTPUT

Four potential-free relay contacts.

BINARY INPUT

10 binary inputs in 5 galvanically separated groups.

Power Switch

CURRENT OUTPUT

3x32A

rms

output of the internal current amplifier; also applied to the generator

combination socket.

Generator combination socket

8-pole combination socket for VOLTAGE OUTPUT 1-3 and CURRENT OUTPUT (up to 3 × 25 A max.).

Warning indication: Dangerous Voltage!

At least one of the output voltages exceeds 42 V.

Front view of the CMC 353

Connections and Interfaces

5CONNECTIONS AND INTERFACES

5.1 Front Panel Connections

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CMC 353 Reference Manual

BINARY OUTPUT

Software controlled

BINARY INPUT

3 - 10 identical

Circuit diagram of a binary input for potential-free operation (dry)

132 kΩ

< 20 V: 78 kΩ

Vth > 20 V: 3.2 kΩ

132 kΩ

350 kΩ

110 kΩ

11 V

Circuit diagram of a binary input with programmable threshold voltage (wet operation)

Each binary input can be configured individually for wet or dry operation.

Two inputs (1 + 2, 3 + 4, ...) are one potential group. The inputs grouped in one potential group share a common ground.

AUX DC

Figure 5-2: Simplified circuit diagrams of binary inputs and outputs

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Figure 5-3:

VOLTAGE OUTPUT

4x300V

rms

CURRENT OUTPUT

3x32A

rms

123N4 N

123N

In non-operative state, relay contacts (as illustrated in figure 5-3) protect the current amplifier from external power by shortening the outputs to N.

Simplified diagrams of current and voltage outputs

Connections and Interfaces

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CMC 353 Reference Manual

Front view View onto the connector from

the cable wiring side

5.1.1 Generator Combination Socket for VOLTAGE OUTPUT and

Figure 5-4: Generator combination socket

CURRENT OUTPUT

The combination socket CURRENT OUTPUT / VOLTAGE OUTPUT simplifies the connection of test objects to the CMC 353. The three voltage outputs (VOLTAGE OUTPUT 1-3) as well as the CURRENT OUTPUT are wired to the combination socket (refer to table 5-1 on page 31).

WARNING:

The connections on the socket are dangerous when the test set is turned on.

Follow the safety information provided at the beginning of this manual when connecting the generator combination sockets.

If a dangerous voltage (greater than 42 V) is applied to the socket, a warning indicator lights above the socket.

For currents greater than 25 A, the test object (load) should be exclusively connected to the 4 mm/0.16 " banana sockets and not on the generator connection socket.

Page 31

Table 5-1: Pin layout

Table 5-2: Manufacturer ordering information

Connections and Interfaces

Pin Signal

1- VOLTAGE N

2- VOLTAGE 3

3- VOLTAGE 2

4- VOLTAGE 1

1+ CURRENT 1

2+ CURRENT N

3+ CURRENT 3

4+ CURRENT 2

Note: If using negative sequence phase rotation, swap the connectors VOLTAGE 2 and VOLTAGE 3 as well as CURRENT 2 and CURRENT 3.

Description of the generator combination socket

Description SPEAKON LINE 8-pole

Article Number NL8FC

Manufacturer Neutrik (www.neutrik.com)

You can order the plug for generator combination socket directly from OMICRON. For the part number refer to section 9.6, "Ordering Information" on page 86.

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CMC 353 Reference Manual

Power supply and

fuse T12.5 AH

Fans

power supply

Status LEDs A & B and

"Associate" button

*) For example to connect to low resistance grounding bars.

SELV interfaces "ext. Interf." and

“LLout1-6”

Ethernet ports ETH1 & ETH2

and "!" button

Fan current and

voltage outputs

4 mm/0.16 " socket for

additional

PE connection

5.2 Connections on the Back Panel

Figure 5-5: Rear view of

CMC 353

5.2.1 Ethernet Ports ETH1 and ETH2

The two CMC 353 PoE (Power over Ethernet) ports ETH1 and ETH2 are standard 10/100Base-TX (twisted pair) Ethernet ports. They support auto crossing (auto MDI/MDIX). This means you can use a standard cable or a cross-over Ethernet patch cable.

Since the CMC 353 can be controlled over a network, any distance between the controlling computer and the test set is possible. This enables direct remote control of the CMC 353, e.g., for end-to-end testing.

The Ethernet ports also provide the basis for the processing of substation protocols according to the IEC 61850 standard. They allow flexible configurations, e.g., for separation of data traffic from different network segments or segregation of substation protocol data and test set control commands.

The green LED indicates a link connection to a PC or a network. The yellow LED indicates active traffic (receiving or transmitting) on the cable.

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Connections and Interfaces

Associate

!Button

The ! button enables you to recover from unsuccessful software image downloads or other emergency situations. To start a new software image download, press the ! button with a pointed tool or a paper clip while powering-up the CMC. In that case, the test set will not start as usual but wait for a new software image download.

Associate Button

The Associate button has the following functions:

• Associate with controlling computer

An Ethernet communication port enables you to communicate with any CMC available on the network. This may lead to dangerous situations where a user accidentally connects to a device located on a desk of somebody else, emitting unsafe voltages and endangering the person working there.

To prevent such a situation, a special mechanism is integrated into the CMC test set that allows only “authorized” clients to control the test set. By using the Associate button, the test set is registered for use with a specific host computer. The test set will issue voltages and currents only when it is associated to the client requesting this. The association process can be initiated by the Test Set Association and Configuration tool or by the OMICRON Device Browser. For more details about this process, refer to the Help of the according tool.

For the association the Ethernet hardware address (MAC) of the controlling computer is remembered. Consequently, if the network interface on the computer has changed, the CMC test set has to be associated whenever the MAC address changes.

Reset IP Configuration

If the Associate button is pressed while powering up the CMC test set, the IP configuration of the network interfaces is reset to factory default, which is DHCP/AutoIP for both network interfaces. It may be necessary to reset the IP configuration in this way to recover from settings with conflicting static IP addresses.

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CMC 353 Reference Manual

Status LED A, B

The status LED A and B are of interest in case of troubleshooting.

A: yellow status LED

• A lit yellow LED indicates that the test set is ready to be controlled by a

computer. The hardware checks in the test set are finished, and the test set is properly connected to a computer or a network.

• The LED is off when the test set is waiting for an "emergency software

image download". This is the case when pressing the ! button while powering-up the CMC test set.

B: green LED

If the yellow LED A is off, the green LED B signals the following conditions:

• LED B blinks slowly:

CMC test set waits for the TFTP download (Trivial File Transfer Protocol) of a software image.

• LED B is lit:

The TFTP download of the software image is in progress.

• LED B blinks quickly:

The computer writes (e.g., the software image) to the flash memory of the CMC test set. Do not turn off the CMC test set as long as the writing is in progress.

5.2.2 Ethernet / Network Settings

General

The OMICRON Test Universe software running on the PC communicates with the CMC 353 via a network connection. Therefore it is possible to either have the CMC 353 directly connected to the computer’s network plug by a cable or to have the CMC 353 and the controlling computer connected to a computer network.

Both network ports can be used interchangeably, but ETH1 is primarily used to connect to a PC to control the test set and ETH2 for substation communication. Both network ports have link LEDs (green) and traffic LEDs (yellow flashing) to check the physical connectivity and proper cabling.

IP Configuration

For communication of the CMC 353 with the controlling PC the test set and the OMICRON Test Universe software use a DCOM connection over

Page 35

Connections and Interfaces

TCP/IP. The TCP/IP settings are done via the Test Set Association and Configuration component included in the Test Universe software.

The CMC 353 can either be set to static IP addresses or use DHCP (Dynamic Host Configuration Protocol) and AutoIP/APIPA (Automatic Private IP Addressing).

Additionally there is a special DHCP server integrated in the CMC 353 to serve IP addresses only for that computer the OMICRON Test Universe software is running on. Note that this will only take place when there is no DHCP server in the network. If there is DHCP server in the network, the DHCP feature of the CMC 353 remains inactive.

If the IP settings conflict with IP settings of other devices in the network, it is possible to reset the test set to factory defaults (DHCP and AutoIP) by pressing the "Associate" button at the rear of the test set while powering up the test set (refer to "Associate Button" on page 33).

Security / Firewall Settings

To automatically detect and set the IP configuration of CMC 353 test sets in the network, IP-multicasting is used by the Test Universe software. Therefore a firewall program has to be configured to allow for this communication in addition to allow for DCOM communication. For the Microsoft Windows Firewall in Windows XP SP2 (or later) the configuration of the firewall is done automatically during installation of the OMICRON Test Universe.

The software component on the PC which automatically detects test sets on the network (OMFind.exe) has to be allowed for an inbound connection on port 4987 for UDP. The software component on the PC which controls the test sets (CMEngAl.exe) has to be allowed for DCOM communication over TCP/IP.

Network Troubleshooting

For instructions to help you to incorporate network-capable CMC test sets into a computer network, please refer to the manual "Network-based CMC Test Sets". This manual is provided in PDF format. It is available on your hard disk at installation folder\Test Universe\Doc\.

Alternatively, start the Test Universe Help from the OMICRON Start Page or any test module and navigate to the table of contents entry User Manuals (at the beginning of the table of contents). Click Read Me First. In this topic you find a direct link to "Network-based CMC Test Sets". To open the manual, just click the link.

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CMC 353 Reference Manual

ext. Interf.

LL out 1 - 6

5.2.3 SELV Interfaces

5.2.3.1 External Interface ("ext. Interf.")

All inputs and outputs to the SELV group (SELV = Safety Extra Low Voltage) reference to a common neutral that is internally connected to the protective earth (GND) of the housing.

The SELV interface connector "ext. Interf." holds four additional transistor binary outputs (Bin. out 11 - 14). Unlike regular relay outputs, Bin. out 11 - 14 are bounce-free binary outputs (small signals) and have a minimal reaction time.

In addition, two high frequency counter inputs for up to 100 kHz are available for the testing of energy meters.

For more detailed information please refer to the technical data section

6.3.7, "Low-Level Binary Outputs ("ext. Interf.")" on page 54.

Meter Testing

For energy meter test applications, the "ext. Interf." permits easy connectivity.

Synchronization

Via the "ext. Interf.", the CMC 353 time base can be GPS- and IRIG-Bsynchronized. Depending on the synchronization method of your choice, use either the CMGPS synchronization unit or the CMIRIG-B interface box.

Both synchronization accessories, the CMGPS and the CMIRIG-B, are optional and are described in more details in section 9.3, "Time Synchronization Accessories" on page 77.

5.2.3.2 LL out 1-6 (Low Level Outputs 1-6)

The SELV interface connector "LL out 1 - 6" holds two independent generator triples. These six high accuracy analog signal sources can serve to either control an external amplifier or to directly provide small signal outputs.

In addition, a serial digital interface is available that transmits control and monitor functions between the CMC 353 and the external amplifiers.

Supported devices are CMA 156, CMA 56 CMS 252.

These products are not available anymore.

, CMS 156, CMS 2511 and

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Connections and Interfaces

The low level outputs are short-circuit-proof and continually monitored for overload.

Connect the external amplifier to the CMC 353 low level outputs. Use the connecting cable that was supplied with the amplifier.

For more detailed information please refer to the technical data section

6.3.6, "Low Level Outputs "LL out" for External Amplifiers" on page 52.

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CMC 353 Reference Manual

Page 39

6TECHNICAL DATA

Guaranteed Values:

• General:

The values are valid for the period of one year after factory calibration, within 23 °C ± 5 °C at nominal value and after a warm-up time greater than 25 min.

• Guaranteed values from the generator outputs:

The values are valid in the frequency range from 10 to 100 Hz unless specified otherwise. Given maximum phase errors are related to the voltage amplifier outputs.

• Accuracy data for analog outputs are valid in the frequency range from

0 to 100 Hz unless specified otherwise.

• The given input/output accuracy values relate to the range limit value

(% of range limit value).

Technical Data

Table 6-1: Power supply data

6.1 Main Power Supply

Main Power Supply

Connection Connector according to IEC 60320

Voltage, single phase

nominal voltage operational range

Power fuse T 12.5 AH 250 V (5 x 20 mm)

Nominal current

Frequency

nominal frequency operational range

Overvoltage category II

Refer to section 6.3.4, "Operational Limits in Conjunction with Mains Supply" on page 51.

100-240V 85 ... 264 V

"Schurter", order number 0001.2515

at < 170 V: 12 A max. at > 170 V: 10 A max.

50/60 Hz 45 ... 65 Hz

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CMC 353 Reference Manual

6.2 Insulation Coordination

Table 6-2: Insulation coordination

Insulation Coordination

Overvoltage category II Pollution degree 2 (except for Binary Inputs) Insulation of function

groups on front panel to ground (GND)

- Basic insulation with maximum voltage of 600 V

to ground

rms

- Clearance: > 3 mm (0.12 ")

- Creepage: > 6 mm (0.24 ")

Insulation of functional groups on front panel from each other

- Test voltage: 2200 V

- Working insulation

- Clearance: > 1 mm (0.04 ")

- Creepage: > 1 mm (0.04 ")

rms

- Test voltage: 1500 VDC

Measurement category (BINARY INPUT)

- CAT III / 300 V

- CAT IV / 150 V

rms

Functional groups on CMC 353 front panel: VOLTAGE OUTPUT, CURRENT OUTPUT, AUX DC, BINARY OUTPUT, BINARY INPUT

Page 41

6.3 Outputs

Table 6-3: Analog current, voltage, and LL outputs.

Technical Data

For block diagrams of the available generator outputs, please refer to section 4.1, "Block Diagram" on page 20.

General Generator Outputs Data (analog current and voltage outputs, outputs "LL out")

Frequency ranges

sinusoidal signals harmonics / interharmonics transient signals

10 … 1000 Hz

10 … 3000 Hz

DC … 3.1 kHz Frequency resolution < 5 µHz Frequency accuracy ± 0.5 ppm Frequency drift ± 1 ppm Bandwidth (–3 dB) 3.1 kHz Phase range ϕ - 360° to + 360° Phase resolution 0.001° Synchronized operation Generator outputs can be synchronized

to a reference input signal on binary

input 10 (range: 40 … 70 Hz). Temperature drift 0.0025 %/°C

Amplitude derating for current outputs at frequencies above 380 Hz.

Signals above 1 kHz are only supported in selected Test Universe modules and are only available on the voltage outputs and the low level outputs.

All voltages and current generators can independently be configured with respect to amplitude, phase angle, and frequency.

All outputs are monitored. Overload conditions result in a message displayed on the PC.

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CMC 353 Reference Manual

6.3.1 Extended Frequency Range

Table 6-4: Extended frequency range (1 - 3 kHz)

In selected Test Universe modules (e.g., Harmonics and PQ Signal Generator) the CMC 353 supports a mode for generating stationary signals up to 3 kHz on the voltage outputs and the low-level outputs. This mode corrects the phase and gain errors of the output filter. The 3 dB bandwidth of this filter limits the amplitude at 3 kHz to about 70 % of the maximum range value. The application of the extended frequency range is the generation of harmonics and interharmonics.

Extended Frequency Range (1 - 3 kHz)

Typical Guaranteed

Low Level Outputs

Phase error Amplitude error

< 0.25 ° < 0.25 %

< 1 ° < 1 %

Voltage Amplifier

Phase error Amplitude error

< 0.25 ° < 0.25 %

< 1 ° < 1 %

No extended frequency range support for external amplifiers.

Page 43

6.3.2 Current Outputs

Table 6-5: Current outputs

Footnotes:

1.Data for three-phase systems are valid for symmetric conditions (0 °, 120 °, 240 °) unless specified otherwise.

2. For wiring of single-

phase modes see chapter 7, "Increasing the Output Power, Operating Modes" on page 65.

3.Single-phase mode (in phase opposition).

4.rd. = reading; rg. = range, whereat n % of rg. means: n % of upper range value.

5.Valid for sinusoidal signals at 50/60 Hz and

≤ 0.5 Ω.

load

6.Values at 20 kHz measurement bandwidth, nominal value, and nominal load.

7.Guaranteed data at 230 V mains for ohmic loads (PF=1); typical data for inductive loads. Refer to the sections about operational lmits

6.3.4. and 6.3.5.

8.For currents > 25 A, connect test object only to the 4 mm/0.16 " banana connections and not to the generator combination socket.

9.Current amplitude derating at frequencies above 380 Hz (see Figure 6-4).

Technical Data

The data designated "guaranteed" apply to a mains power supply of 230 VAC and to ohm resistive load (load flow = 1). The data designated "typical" apply to inductive load.

For possible operational limits refer to sections 6.3.4, "Operational Limits in Conjunction with Mains Supply" and 6.3.5, "Operational Limits with Current and Voltage Amplifier in Parallel".

Current Outputs

Output currents

3-phase AC (L-N) 3 x 0 ... 32 A 1-phase AC (L-L) 1-phase AC (LL-LN) DC (LL-LN)

Power

2, 3

1 x 0 ... 32 A

1 x 0 ... 64 A 1 x 0...±90A

Typical Guaranteed 3-phase AC (L-N) 3 x 430 VA at 25 A 3 x 250 W at 20 A 1-phase AC (L-L)

2, 3

1-phase AC (LL-LN) DC (LL-LN)

1 x 870 VA at 25 A 1 x 530 W at 20 A

1 x 500 VA at 40 A 1 x 350 W at 40 A

1x 700W at ±40A 1x500W at ±40A

Accuracy Typical Guaranteed

≤ 0.5 Ω

load

> 0.5 Ω Error < 0.1 % of rg. Error < 0.3 % of rg.

load

Harmonic distortion (THD+N)

Phase error

5,6

Error < 0.05 % rd .

+ 0.02% of rg.

0.05 % < 0.15 %

0.05 ° < 0.2 °

Error < 0.15 % of rd.

+ 0.05% of rg.

DC offset current < 3 mA < 10 mA

Resolution 1

Frequency range

A, 2 mA (2 phases parallel), ...

0 … 1000 Hz

Trigger on overload Timer accuracy error < 1 ms Short-circuit protection Unlimited Open-circuit protection Open outputs (open-circuit) permitted Connection 4 mm/0.16 " banana connectors, amplifier

connection socket

Insulation Reinforced insulation of power supply and all

SELV interfaces

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CMC 353 Reference Manual

200

300

400

500

100

0 5 10 15 20 25 30

Output current in A

rms

Output power per phase in VA / W

S 3-phase per phase in [VA]

P 3-phase per phase in [W]

300

400

500

600

700

800

900

1000

100

200

0 5 10 15 20 25 30 35 40 45 50

Output power in VA / W

Output current in A

rms

S @ 64 A (LL-LN) [VA]

P @ 64 A (LL-LN) [W]

P @ 32 A (L-L) [W]

S @ 32 A (L-L) [VA]

Figure 6-1: Guaranteed output power per phase of a group and when groups A and B are connected in parallel (active power values in W are guaranteed; apparent power values in VA are typical values)

Figure 6-2: Guaranteed single phase output power curves (active power values in W are guaranteed; apparent power values in VA are typical values)

For additional information refer to section 7.2, "Single-Phase Operation of the CMC 353" on page 66.

Page 45

Figure 6-3:

0 5 10 15 20 25 30 35 40 45

Output current in A

rms

Compliance voltage in V

peak

1-phase low sensitivity 32 A (L-L)

1-phase high sensitivity 32 A (L-L)

1-phase low sensitivity 64 A (LL-LN)

1-phase high sensitivity 64 A (LL-LN)

1-phase high sensitivity 32 A (L-N)

1-phase low sensitivity 32 A (L-N)

0 100 200 300 400 500 600 700 800 900 1000

Frequency [Hz]

Max. Current [A

]

Frequency in Hz

Max. current in A

Typical compliance voltage (50/60 Hz)

Figure 6-4: Current derating at high frequencies for sinusoidal signals

Technical Data

The high and low sensitivity curves in figure 6-3 correspond to the overload detection sensitivity settings in the Test Universe software. The low sensitivity curves show the maximum available peak compliance voltage, which is mainly relevant for testing primary and electromechanical relays.

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CMC 353 Reference Manual

300

400

500

600

700

100

0 5 10 15 20 25 30 35 40 45

Current in A

Continuous output power in W

1x64A

1x32A

100

150

200

250

0 5 10 15 20 25 30

Current in A

Continuous output power in W

3x32A

Figure 6-5: Typical continuous output current and output power at 23 °C; single-phase mode

200

Figure 6-6: Typical continuous output current and output power at 23 °C; three- and six-phase mode

The continuous operating range is given by the area below the curves in the figure 6-5 and 6-6 above.

Page 47

Table 6-6: Typical duty cycles for operation at ambient temperature of 23 °C

Technical Data

Due to the large number of operating modes, it is not possible to give universally applicable curves for the discontinuous mode. However, the examples given below can be used instead to gain feeling for the possible output durations (t1 is the possible duration of a cold device).

3 x 32 A (L-N) 1x64A (LL-LN)

[A]P [W]

0 ... 25 0 ... 600 100 % > 30 > 1800 - 0 ... 40 0 ... 350 100 % > 30 > 1800 -

26 700 80 % 7.5 80 20 50 250 60 % 4.9 30 20

29 650 75 % 6.0 60 20 60 150 43 % 2.6 15 20

32 600 71 % 3.5 50 20 64 100 38 % 2.0 12 20

Duty cycle

[min]

ton

[s]

toff

[s]

[A]P [W]

Duty

cycle

[min]

ton

[s]

toff

[s]

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CMC 353 Reference Manual

Footnotes:

1.a) V

(t) automatically calculated: V

=(VL1+ VL2+ VL3)*C C: configurable constant from –4 to +4.

b) V

can be configured by software in frequency, phase, and amplitude.

2. Guaranteed data for ohmic loads, (PF=1). Refer to the accompanying figure of the output power curves. Refer to section 6.3.4, "Operational Limits in Conjunction with Mains Supply" on page 51.

3.Data for three-phase

systems are valid for symmetric conditions (0 °, 120 °, 240 °).

4.Data for four-phase

systems are valid for symmetric conditions (0 °, 90 °, 180 °, 270 °).

5.rd. = reading;

rg. = range, whereat n % of rg. means: n % of upper range value.

6.Valid for sinusoidal

signals at 50/60 Hz.

7. 20 kHz measurement

bandwidth, nominal value, and nominal load.

8. Signals above 1 kHz are

only supported in selected software modules and are only available on the voltage outputs and the low level outputs.

Table 6-7: CMC 353 voltage outputs

6.3.3 Voltage Outputs

4 Voltage Outputs

Output voltages

3-phase AC (L-N) 4-phase AC (L-N) 1-phase AC (L-N) 1-phase AC (L-L) DC (L-N)

Output power

3-phase AC 4-phase AC 1-phase AC (L-N) 1-phase AC (L-L) DC (L-N)

Accuracy

Harmonic distortion (THD+N)

Phase error

DC offset voltage < 20 mV < 100 mV

Voltage ranges Range I: 0 ... 150 V

Resolution Range I: 5 mV

Frequency ranges

Short-circuit protect. Unlimited for L - N

Connection 4 mm/0.16 " banana connectors; amplifier

Insulation Reinforced insulation of power supply and all SELV

6, 7

3 x 0...300V

4 x 0...300V 1 x 0...300V 1 x 0...600V 4 x 0 ... ± 300 V

Typical Guaranteed

3 x 100 VA at 100 ... 300 V 4 x 75 VA at 100 ... 300 V 1 x 200 VA at 100 ... 300 V 1 x 275 VA at 200 ... 600 V 1 x 420 W at 300 VDC

Error < 0.03 % of rd.

+ 0.01 % of rg.

3 x 85 VA at 85 ... 300 V 4 x 50 VA at 85 ... 300 V 1x150VA at 75...300V 1 x 250 VA at 200... 600 V 1 x 360 W at 300 VDC

Error < 0.08 % of rd.

+ 0.02 % of rg.

0.015 % < 0.05 %

Typical 0.02 ° Guaranteed < 0.1 °

Range II: 0 ... 300 V

Range II: 10 mV

sinusoidal signals harmonics/interharm. transient signals

connection socket V

L1-VL3

10 … 1000 Hz 10 … 3000 Hz DC … 3.1 kHz

interfaces

Page 49

6.3.3.1 Power Diagram for Three-Phase Operation

Output power per phase in VA

Output voltage in V

typical

guaranteed

Figure 6-7: Power diagram for three-phase operation

Technical Data

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CMC 353 Reference Manual

Output voltage L-N in V

Output power in VA

typical

guaranteed

Output voltage L-L in V

Output power in VA

typical

guaranteed

6.3.3.2 Power Diagram for Single-Phase Operation

Figure 6-8: Single-phase operation L-N

Also refer to section 7.2.3, "Single-Phase Voltage" on page 68.

Figure 6-9: Single-phase operation L-L

Page 51

6.3.4 Operational Limits in Conjunction with Mains Supply

Table 6-8: Typical total output power at low mains power supply voltages

Technical Data

A mains power supply voltage of 115 VAC or below limits the maximum possible output power of the CMC 353.

In order to increase the output power when operated with a mains power supply voltage of ≤ 115 VAC, you can supply the CMC 353 from two phases (L-L) rather than from the normal one phase-neutral (L-N). This increases the power supply by the factor √3 (115 VAC * √3 = 200 V).

To limit the internal losses and to maximize the output power of the voltage amplifier, always set the maximum test object voltage to the minimum value possible for the test.

Mains

Current amplifier Voltage Amplifier AUX DC

115V 3x250W @ 20A 3x85W @ 85V 45W @ 110V

100V 3x200W @ 20A 3x85W @ 85V 45W @ 110V

90 V 3 x 150 W @ 20 A 3 x 85 W @ 85 V 45 W @ 110 V

6.3.5 Operational Limits with Current and Voltage Amplifier in

Table 6-9: Typical test set uptime for different output powers when operating at an ambient temperature of 23 °C

At an ambient temperature of 23 °C, after 10 min of continuous operation at full output power, allow a duty cycle of 10 min on/10 min off.

Parallel

A parallel operation of current and voltage amplifier lowers the maximum output power of the CMC 353.

To limit the internal losses and to maximize the output power of the voltage amplifier, set the maximum test object voltage to the minimum value possible for the test. To minimize no-load losses, do not route unused amplifiers in the Hardware Configuration.

Current amplifier Voltage Amplifier t1

3 x 200 W @ 20 A 3 x 60 W @ 85 V > 1800 s

3 x 250 W @ 20 A 3 x 85 W @ 85 V 600 s

3 x 430 W @ 20 A 3 x 100 W @ 85 V 500 s

t1 = maximum possible uptime for a cold CMC 353 test set.

At an ambient temperature of 23 °C, when operating the CMC 353 test set with a low mains power supply, allow a duty cycle of 10 min on/10 min off.

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CMC 353 Reference Manual

Pin Function

Pin 1 LL out 1 Pin 2 LL out 2 Pin 3 LL out 3 Pin 4 Neutral (N) connected to GND Pin 5 LL out 4 Pin 6 LL out 5 Pin 7 LL out 6 Pin 8-16 For internal purposes Housing Screen connection

6.3.6 Low Level Outputs "LL out" for External Amplifiers

Figure 6-10: Pin assignment of "LL out"; view onto the connector from the cable wiring side.

The SELV interface connector "LL out 1 - 6" holds two independent generator triples. These six high accuracy analog signal sources per connector can serve to either control an external amplifier or to directly provide small signal outputs.

In addition, the SELV interface connector provides a serial digital interface (pins 8-16; see below) that transmits control and monitor functions between the CMC 353 and the external amplifiers. Supported devices are the CMA 156, CMA 56, CMS 156, CMS 251 and CMS 252.

The low level outputs are short-circuit-proof and continually monitored for overload. They are separated through reinforced insulation from the power input and from the load outputs (SELV interface). They deliver calibrated signals in the range from 0 to 7 V

nominal (0 to ± 10 V

eff

peak

Both the selection of the particular amplifier as well as the specification of the range of the amplifier takes place in the Tes t Uni v er se software.

"LL out 1-3" and "LL out 4-6" each make up a selectable voltage or current triple.

Page 53

Table 6-10: Data for SELV outputs "LL out"

Technical Data

"LL out" outputs

Output voltage range

0…±10 V

peak

Frequency range 0 … 3000 Hz

Output current Max. 1 mA

Resolution < 250

Accuracy Typical < 0.025 % Guaranteed < 0.07 %

Harmonic distortion

(THD+N)

Phase error

Typical < 0.015 % Guaranteed < 0.05 %

Typical 0.02 ° Guaranteed < 0.1 °

DC offset voltage Typical < 150

Unconventional CT/VT

Linear or Rogowski

for 1…10 V

V Guaranteed < 1.5 mV

mode

peak

simulation

Overload indication Yes

Short-circuit protection Unlimited to GND

Insulation Reinforced insulation to all other potential groups

of the test equipment. GND is connected to protective earth (PE).

Table 6-11: Ordering Information

Input OMICRON amplifier nominal: 0 ... 5 V

Values at nominal voltage (10 V

Valid for sinusoidal signals at 50/60 Hz.

When simulating Rogowski sensors, the output voltage is proportional to the derivative of the current with respect to time (di(t)/dt).

peak

rms

), 50/60 Hz, and 20 kHz measurement bandwidth.

Ordering Information

Connector for two guide notches and pull relief

FGB.2B.316.CLAD 72Z

(for "LL out")

Black anti-bend cable cover GMA.2B.070 DN

For a manufacturer description about the connection sockets "LL out" and "ext. Interf.", visit the Web site www.lemo.com.

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CMC 353 Reference Manual

Pin Function

Pin 1 Counter input 1 Pin 2 Counter input 2 Pin 3 Reserved Pin 4 Neutral (N) connected to GND Pin 5 Binary output 11 Pin 6 Binary output 12 Pin 7 Binary output 13 Pin 8 Binary output 14 Pin 9 Reserved Housing Screen connection

6.3.7 Low-Level Binary Outputs ("ext. Interf.")

Figure 6-11: Pin assignment of "ext. Interf." (upper 16-pole Lemo socket); view onto the connector from the cable wiring side

In addition, two high frequency counter inputs for up to 100 kHz are available for the testing of energy meters. They are described in section

6.4.2, "Counter Inputs 100 kHz (Low Level)" on page 61.

Table 6-12: Data of the low-level binary outputs 11 - 14

4 Low-Level Transistor Binary Outputs (Bin. out 11 - 14)

Type Open-collector transistor outputs;

Switching voltage Max. 15 V

Max. input voltage ±16 V

Switch current Max. 5 mA (current limited); min. 100

Actualization time 100

Rise time

Connection Connector "ext. Interf." (CMC 353 rear side)

Insulation Reinforced insulation to all other potential

external pull-up resistor

s (V

extern

=5V, R

pullup

=4.7kΩ)

groups of the test equipment. GND is connected to protective earth (PE).

Page 55

Figure 6-12:

Rear side

of CMC 353

pullup

Inside of CMC 353

16 V

Ω6.8 kΩ

22 kΩ

extern

= 5 ... 15 V

Binary outputs 11 ... 14 "ext. Interf."

Circuit diagram of "ext. Interf." binary transistor outputs 11

Table 6-13: Ordering Information

Technical Data

- 14

Ordering Information

Connector for one guide notch and pull relief

FGG.2B.316.CLAD 72Z

(for "ext. Interf")

Black anti-bend cable cover GMA.2B.070 DN

For a manufacturer description about the connection sockets "LL out" and "ext. Interf.", visit the Web site www.lemo.com.

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CMC 353 Reference Manual

350

300

250

200

150

100

UinV / PinW

Current in A

012 345678

6.3.8 Binary Output Relays

Table 6-14: Data of binary output relays

4 Binary Output Relays (Binary Outputs 1-4)

Type Potential-free contacts; software-controlled

AC loading V

DC loading V

300 VAC; I

max

300 VDC; I

max

8 A; P

8A; P

2000 VA

max

50 W

(refer to load limit curve)

Switch-on current 15 A (max. 4 s at 10 % duty-cycle)

Electrical lifetime 100 000 switching cycles at 230 V

/ 8 A and

ohmic load

Pickup time Approx. 6 ms

Fall back time Approx. 3 ms

Bounce time Approx. 0.5 ms

Connection 4 mm/0.16 " banana sockets

Insulation Reinforced insulation from all SELV interfaces and

from power supply.

The accompanying diagram shows the load limit curve for DC voltages. For AC voltages, a maximum power of 2000 VA is achieved.

Figure 6-13: Load limit curve for relays on the binary outputs with DC voltages

Page 57

Table 6-15: DC Voltage supply AUX DC

6.3.9 DC Supply (AUX DC)

DC Supply (AUX DC)

Voltage ranges 0 ... 66 V

Power Max. 50 W

Accuracy

Resolution < 70 mV

Connection 4 mm/0.16 " banana sockets on front panel

Short-circuit protection Yes

Overload indication Yes

Insulation Reinforced insulation from power supply and

Technical Data

(max. 0.8 A)

0 ... 132 V 0 ... 264 V

(max 0.4 A)

(max. 0.2 A)

Error: typical < 2 %, guaranteed < 5 %

all SELV interfaces

Percentage is with respect to each range's full-scale.

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CMC 353 Reference Manual

6.4 Inputs

6.4.1 Binary Inputs

Table 6-16: General data of binary inputs

Table 6-17: Data for potential-sensing operation

General Data of Binary Inputs 1…10

Number of binary inputs 10

Trigger criteria Potential-free or DC-voltage compared to

threshold voltage

Reaction time Max. 220

Sampling frequency 10 kHz

Time resolution 100

Max. measuring time Unlimited

Debounce time 0…25 ms (refer to page 60)

Deglitch time 0…25 ms (refer to page 60)

Counting function

counter frequency pulse width

3 kHz (per input) >150

s (for high and low signals)

Configuration Binary inputs can be configured. Refer to the

OMICRON Test Universe Help.

Connection 4 mm/0.16 " banana sockets on the front

panel

Insulation 5 galvanic insulated binary groups with each

2 inputs having its own GND. Operation insulation to the power outputs, DC inputs and between galvanically separated groups. Reinforced insulation from all SELV interfaces and from power supply.

Data for Potential-Sensing Operation

Threshold voltage data per input

Setting range Resolution

range

Range I Range II

Max. input voltage CAT III/ / 300 V

0...20V >20...300V

CAT IV / 150 V

50mV 500mV

rms

Page 59

Technical Data

Input signal

Input signal deglitched

deglitch

Data for Potential-Sensing Operation

Threshold voltage accuracy1 5% of rd. + 0.5% of rg.

Threshold voltage hysteresis Range I: typ. 60 mV

Range II: typ. 900 mV

Input impedance

Threshold 0...20V Threshold 20...300V

Applies to positive voltage signal edge; value shown in % of reading (rd.) + % of upper range value (rg.)

Refer to figure 5-2, "Simplified circuit diagrams of binary inputs and outputs" on page 28.

210 k 135 kΩ

Table 6-18: Data for potential-free operation

Figure 6-14: Signal curve, deglitching input signals

Data for Potential-Free Operation

Trigger criteria

Logical 0: R > 100 k

Logical 1: R < 10 kΩ

Input impedance

Refer to figure 5-2, "Simplified circuit diagrams of binary inputs and outputs" on page 28.

216 k

Deglitching input signals

In order to suppress short spurious pulses a deglitching algorithm could be configured. The deglitch process results in an additional dead time and introduces a signal delay. In order to be detected as a valid signal level, the level of an input signal must have a constant value at least during the deglitch time. The figure below illustrates the deglitch function.

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CMC 353 Reference Manual

Input signal

debounced

debounce

Figure 6-15: Signal curve, debounce input signals

Debouncing input signals

For input signals with a bouncing characteristic, a debounce function can be configured. This means that the first change of the input signal causes the debounced input signal to be changed and then be kept on this signal value for the duration of the debounce time.

The debounce function is placed after the deglitch function described above and both are realized by the firmware of the CMC 353 and are calculated in real time.

The figure below illustrates the deglitch function. On the right-hand side of the figure, the debounce time is too short. As a result, the debounced signal rises to “high” once again, even while the input signal is still bouncing and does not drop to low level until the expiry of another period T

debounce

Page 61

6.4.2 Counter Inputs 100 kHz (Low Level)

Pin Function

Figure 6-16: Pin assignment of "ext. Interf." (upper 16-pole Lemo socket); view onto the connector from the cable wiring side

Technical Data

The SELV interface connector "ext. Interf." holds two high frequency counter inputs for up to 100 kHz are available for the testing of energy meters.

In addition, four transistor binary outputs (Bin. out 11 - 14) are available. They are described in section 6.3.7, "Low-Level Binary Outputs ("ext. Interf.")" on page 54.

Table 6-19: Counter inputs 100 kHz

2 Counter Inputs

Max. counter frequency 100 kHz

Pulse width > 3 µs (high and low signal)

Switch threshold

pos. edge neg. edge

max. 8 V min. 4 V

Hysteresis typ. 2 V

Rise & fall times < 1 ms

Max. input voltage ± 30 V

Connection Socket "ext. Interf." (rear CMC 353)

Insulation Reinforced insulation to all other potential

groups of the test equipment. GND is connected to protective earth (PE).

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CMC 353 Reference Manual

Rear side

of CMC 353

+15 V

100 k

22 kΩ

47 pF

Inside of

CMC 353

Counter inputs 1 & 2

"ext. Interf."

Figure 6-17: Circuit diagram of "ext. Interf." counter inputs 1 and 2

Table 6-20: Ordering Information

Ordering Information

Connector for one guide notch and pull relief

FGG.2B.316.CLAD 72Z

(for "ext. Interf")

Black anti-bend cable cover GMA.2B.070 DN

Table 6-21: Technical data of the Ethernet ports

For a manufacturer description about the connection sockets "LL out 1-6" and "ext. Interf.", visit the Web site www.lemo.com.

6.5 Technical Data of the Ethernet Ports

Ethernet ports ETH1 and ETH2

Type 10/100Base-TX (10/100Mbit, twisted pair,

auto-MDI/MDIX or auto-crossover) Connector RJ45 Cable type LAN cable of category 5 (CAT5) or better Status indication Green LED: physical link present

Yellow LED: traffic on interface Power over Ethernet

(PoE)

IEEE 802.3af compliant.

Port capability limited to one Class 1 (3.84 W)

and one Class 2 (6.49 W) power device.

Page 63

Table 6-22: Climate

Table 6-23: Shock and vibration

Technical Data

6.6 Environmental Conditions

6.6.1 Climate

Climate

Operating temperature 0 ... +50 °C;

above +30 °C a 50 % duty cycle may apply.

Storage and transportation -25 … +70 °C

Max. altitude 2000 m

Humidity 5 … 95% relative humidity; no condensation

Climate Tested according to IEC 68-2-78

6.6.2 Shock and Vibration

Dynamics

Vibration Tested according to IEC 60068-2-6

(operating mode); frequency range 10 ... 150 Hz; acceleration 2 g continuous (20 m/s²); 10 cycles per axis

Shock Tested according to IEC 60068-2-27

(operating mode); 15 g / 11 ms, half-sinusoid, each axis

6.7 Mechanical Data

Table 6-24: Data regarding size and weight

6.8 Cleaning

Size, Weight and Protection

Weight 12.9 kg (28.5 lbs)

Dimensions W x H x D (without handle) 343 x 145 x 390 mm

(13.5x5.7x15.4")

Housing IP20 according to EN 60529

To clean the CMC 353, use a cloth dampened with isopropanol alcohol or water. Prior to cleaning, always switch off the power switch and unplug the power cord from the mains.

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CMC 353 Reference Manual

6.9 Safety Standards, Electromagnetic Compatibility

Table 6-25: CE conformity, certified Safety Standards and EMC-compatibility

(EMC) and Certificates

CE Conformity, Requirements

The product adheres to the specifications of the guidelines of the council of the European Community for meeting the requirements of the member states regarding the electromagnetic compatibility (EMC) Directive 89/336/EEC and the low voltage Directive 73/23/EEC.

EMC

Emission

Europe International USA

Immunity

Europe International

EN 61326; EN 61000-6-4; EN 61000-3-2/3 IEC 61326; IEC 61000-6-4; IEC 61000-3-2/3 FCC Subpart B of Part 15 Class A

EN 61326; EN 61000-6-2; EN 61000-4-2/3/4/5/6/11 IEC 61326; IEC 61000-6-2; IEC 61000-4-2/3/4/5/6/11

Certified Safety Standards

Europe EN 61010-1

Insulation of PC and SELV interfaces complies with EN 60950-1

International USA Canada

IEC 61010-1 UL 61010-1 CAN/CSA-C22.2 No 61010-1-04

Certificate

Manufactured under an ISO9001 registered system

Page 65

Increasing the Output Power, Operating Modes

7INCREASING THE OUTPUT POWER,

OPERATING MODES

The CMC 353 has a very large application diversity. The current outputs offer enough output power to test almost all electromechanical relays.

The CMC 353 offers a variety of single-phase operation with which the output power from the units can be significantly increased.

In cases when the current or the output power - or even the number of independent voltages or currents - is insufficient, it is possible to switch individual amplifier groups of the CMC 353 in parallel or to connect external amplifiers (up to six independent additional channels) to the "LL out 1-6".

The operating modes illustrated in the following sections can be set in the Hardware Configuration of the OMICRON Test Universe software.

7.1 Safety Instructions for High Current Output

Observe the following safety instructions when using the operating modes and connection methods described in this chapter.

• For currents greater than 25 A, the test object (load) should be exclusively connected to the 4 mm/0.16 " banana sockets and not to the generator combination socket.

• Since a current of 32 A flowing through a test lead (2 m/6 ft. legth,

2.5 mm connection methods shown in this chapter.

• When connecting current outputs in parallel, it has to be ensured that the test leads are only connected together immediately at the test object and that the test leads have sufficient diameter.

• At maximum amplitude of the 64 A mode, the cable losses can amount to 66 W for AC and 140 W for DC operation.

• For applications drawing DC current: The test object (load) should be exclusively non-inductive! Note that a load of, for example, 1 Henry can store 50 J (Joule) at 10 A DC for a long period of time. Electrical shocks with more than 350 mJ can be life-hazardous for the user.

) causes a loss of 15 ... 18 W, we recommend to use the

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CMC 353 Reference Manual

Load

1’

N’

V’ = 2 x V

7.2 Single-Phase Operation of the CMC 353

7.2.1 1 x 32 A High Burden Mode (L-L)

Figure 7-1: Single-phase operation, 1 x 32 A high burden mode

1 x 0 ... 32 A (±45 ADC), max. 70 V

, 1 x 870 VA at 25 A

peak

The currents 1 and 2 of the current triple are phase-opposite. This doubles the compliance voltage of a single output.

Observe the safety instructions given in Section 7.1 on page 65 when using this operating mode.

Refer to the output curves shown in the figures 6-1 through 6-5 in section

6.3.2, "Current Outputs" on page 43.

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Increasing the Output Power, Operating Modes

Load

1’

N’

I’ = 2 x I

7.2.2 1x64A High Current Mode (LL-LN)

Figure 7-2: Single-phase operation, 1 x 64 A high current mode

1 x 0 ... 64 A (±90 ADC), max. 35 V

Since the current over the N socket is limited to 32 A

, 1 x 500 VA at 40 A

peak

(45 ADC), the third

rms

phase is used to support the N socket. The currents 1 and 2 are connected in parallel.

Observe the safety instructions given in Section 7.1 on page 65 when using this operating mode.

Refer to the output curves shown in the figures 6-1 through 6-5 in section

6.3.2, "Current Outputs" on page 43.

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CMC 353 Reference Manual

Load

1’

N’

Load

1’

N’

7.2.3 Single-Phase Voltage

Figure 7-3: Single-phase operation of the voltage system (L-N)

Figure 7-4: Single-phase operation of the voltage system (L-L phase opposition)

1 x 0 ... 300 V, 1 x 200 VA [100 ... 300 V] typical

1 x 0 ... 600 V, 1 x 275 VA [200 ... 600 V] typical

Refer to the output curves shown in the figures 6-8 through 6-9 in section

6.3.3, "Voltage Outputs" on page 48.

Note: Never connect N’ or any other phase to GND (PE). This can cause life-hazardous

situations to persons and damage to property.

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Increasing the Output Power, Operating Modes

7.3 Operation with External Amplifiers

The connections "LL out 1-6" offer a large variety of extension possibilities. They enable the connection of external amplifiers in order to increase the number of independent voltage or current channels and thus provide the possibility to realize additional applications the CMC 353 alone cannot cover.

The LL output socket can connect up to four external amplifiers with six independent channels.

The following configurations are possible:

•9×25A

/ 70 VA for differential relays in three galvanically separated

rms

current triples with CMC 353 + CMA 156.

• 6 × 250 V / 75 VA for the synchronization in two galvanically separated voltage triples with CMC 353 + CMS 156.

For a complete overview of the supported configurations of the CMC 353 and CMA/S amplifiers see the OMICRON Tes t Uni ve rse Help, topic Hardware Configuration.

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CMC 353 Reference Manual

Page 71

8TROUBLESHOOTING

8.1 Troubleshooting Guide

In case of operational problems with the CMC 353 proceed as follows:

1. Consult the reference manual or the Test Universe Help.

2. Check whether the malfunction is reproducible and document it.

3. Try to isolate the malfunction by using another computer, test set or connecting cable, if available.

4. Note the exact wording of any error message or unexpected conditions.

5. If you contact the OMICRON technical support, please attach:

• your company name as well as a phone number and e-mail address

• the serial number of your test set

• information about your computer: Manufacturer, type, memory,

installed printers, operating system (and language) and the installed version and language of the OMICRON Test Universe software.

• screenshots or the exact wording of possible error messages.

6. If you call the OMICRON hotline, please have your computer and test set available and be prepared to repeat the steps that caused the problem.

To speed up the support, please attach the following diagnostic log files:

Troubleshooting

• Communication log file

This file records any communication between the CMC 353 and the computer. To send the log file to the OMICRON technical support:

1. Close all other applications.

2. From the Test Universe Start Page, select Calibration &

Diagnosis… and then Logfile.

3. Select Logging on (Detailed) in the Edit menu and minimize the

window.

4. Start the test module and reproduce the malfunction.

5. Go back to the log file and select Send in the File menu to submit the

log file via e-mail to the OMICRON technical support.

• Hardware check log file

Each time a test module starts, an internal hardware self-check is performed. The results of this test are stored in the hwcheck.log file.

To open the log file, select Calibration & Diagnosis… and then Hardware Check from the Test Universe Start Page.

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CMC 353 Reference Manual

8.2 Potential Errors, Possible Causes, Remedies

Table 8-1: Troubleshooting the

CMC 353

Some potential disruptions that may occur while operating the CMC 353 are listed below. Try to eliminate them by applying the remedies proposed here.

Error Possible causes Remedies

Power switch does not light up after turning on the CMC 353 test set.

There is no power to the test set.

Check the power supply and assure that it supplies power to the test set.

The fuse of the test set is blown

Unplug the power cord from the power source! Replace the fuse:

12.5 AH 250 V

T (5 x 20 mm).

Malfunction of internal test set components

Please contact the OMICRON technical support (refer to section "Contact Information / Technical Support" on page 95).

The following message appears in the status line: "WARNING: Broken ground connection! Immediately turn off the test set! Resuming the operation can result in hazard to life and is

Ground-wire connection to the CMC 353 is broken or the test set is powered by an earthfree power supply.

Note: Never connect the CMC 353 to an isolating transformer.

Check the ground connection.

Ground the housing of the test set separately using the PE connection socket (on the back panel of the test set).

done at your own risk."

Page 73

8.3 Overheating

If a thermal shutdown occurs because of loading the voltage or current outputs a long time by high burden, the Test Universe displays the following messages respectively in the Status History window:

• “Voltage overtemperature:” followed by a list of the affected outputs

“CMC switched off.”

“Test stopped with error.”

• “Current overtemperature:” followed by a list of the affected outputs

“CMC switched off.”

“Test stopped with error.”

The thermal shutdown can be avoided by reducing the compliance voltage of the current amplifiers, i.e., to optimize the output power limit of the current outputs set the compliance voltage of the internal current amplifiers.

Troubleshooting

To do so, go to the Compliance Voltage group box of the Output Configuration Details dialog box in the Test Universe Hardware Configuration.

By reducing the power supply voltage, the ON-time can be prolonged considerably for low-ohmic burdens, because this causes the internal amplifier to consume less power. Hence, the internal heat dissipation can be reduced, especially when testing with low burden test objects. This then considerably extends the time until the device switches OFF due to thermal overload.

For more detailed information refer to the Test Universe Help. Select the

Hardware Configuration Help and navigate to the topic Setting the Current Output Power Limit of CMC Test Sets.

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CMC 353 Reference Manual

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9.1 CMA Current Amplifiers & CMS Voltage Amplifiers

CMA/S AmplifierCMC 256

Ampl. in LL out 1-6

CMC 353 CMA/CMS Amplifier

Figure 9-1: Connecting a CMA/S amplifier to the CMC 353

CMC 353-Related Products and Accessories

9 CMC 353-RELATED PRODUCTS AND

ACCESSORIES

This chapter describes the optional equipment for the CMC 353 test set. In the following the amplifiers CMA 56, CMA 156, CMS 156, CMS 251 and CMS 252 are jointly named CMA/S. Please visit the OMICRON Web site www.omicron.at for up-to-date information.

The CMA/CMS external amplifiers are controlled by the CMC 353 test set via the “LL out 1-6” on the rear panel of the test set as shown in figure 9-1 below.

Table 9-1: Technical data of CMA/S amplifiers

Amplifier Output configurations Output power Miscellaneous

CMA 156

CMS 156

Detailed information about the CMA/S amplifiers can be found in the corresponding user manuals, the product catalog, or on the OMICRON Web site www.omicron.at.

For ordering information about the individual OMICRON amplifiers, please refer to table 9-4, "Ordering information" on page 87.

6-phase current amplifier (Group A, B) 6×25A(L-N) 3×50A(L-N) 2×75A(3L-N) 1 × 150 A (3L-N)

3-phase current/voltage amplifier 3 × 250 V (L-N) 1 × 500 V (L-L) 3×25A(L-N) 1×75A(3L-N)

6 × 70 VA at 7.5 A 3 × 140 VA at 15 A 2 × 225 VA at 22.5 A 1 × 420 VA at 45 A

3×75VA 1×150VA 3 × 70 VA at 7.5 A 1 × 210 VA at 22.5 A

Amplitude accuracy: error < 0.1 %. Weight: 15.4 kg (34 lbs)

Amplitude accuracy: error < 0.1 %. Weight: 14.7 kg (32.4 lbs)

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CMC 353 Reference Manual

Order numbers:

VEHO2902 (CMControl-3), upgrade for an existing CMC 353

VEHO2901 (CMControl-3), add-on for a new CMC 353.

9.2 CMControl-3

Figure 9-2: CMControl-3 attached to a CMC 353 test set

The CMControl is a front panel control device for use with CMC test sets. Its instant availability and its easy operation concept make it the ideal solution for the quick verification of test objects.

The CMControl provides an intuitive touch screen user interface that makes setting up tests particularly easy and convenient. The control wheel allows quick and accurate adjustment of the output quantities. The included test tools and integrated fault models cover almost all arising test tasks and support the tester in getting reliable results quickly.

The CMControl can either be used attached to the CMC test set as front panel control unit or detached as a handheld control device. Its magnetic rear allows easy attachment to standard racks while its built-in stand works perfectly on every table.

The CMControl is available in two variations: CMControl-6 for CMC 356, CMC 256plus and CMC 256-6, and CMControl-3 for CMC 353.

The rugged Ethernet connector ensures reliable communication with the CMC test set. The CMControl is designed to optimally meet the requirements for commissioning and maintenance of protection devices and substations.

For ordering information about the CMControl, refer to table 9-4, "Ordering information" on page 87.

Page 77

9.3 Time Synchronization Accessories

Antenna

ext. Interf.

9.3.1 CMGPS

Figure 9-3: CMGPS synchronization unit

CMC 353-Related Products and Accessories

You can synchronize two or more CMC test sets by connecting a CMGPS synchronization unit to each of the test sets’ "ext. Interf." inputs. Since the GPS (G

lobal Positioning System) signal is available worldwide, the physical distance between these test sets is thereby of no relevance ("end to end" testing).

Table 9-2: Basic technical data of the CMGPS synchronization unit

For detailed information about the CMGPS, please refer to the CMGPS reference manual, the product catalog, or the OMICRON Web site www.omicron.at. For ordering information about the CMGPS, refer to table 9-4, "Ordering information" on page 87.

Pulse outputs 2

Accuracy Error < ±1 µs or ±5µs

Synchronization of test sets

Error < 100 µs / < 5 µs (voltage amplifier) Error < 100 µs / < 20 µs (current amplifier)

Connection Voltage supply from the CMC 353 test set.

Configured by the Test Uni v er se software.

Weight 440 g (1 lbs)

Dimensions W x H x D 140 x 70 x 40 mm (5.5 x 2.8 x 1.6 ")

Error corresponds to amplifier output signals (voltage/current) of CMGPS-synchronized test sets at configured GPS trigger event 5 µs / 20 µs: enhanced mode only in supported Test Universe test modules (refer to Te st Universe Help, topic "Time Trigger Configuration").

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CMC 353 Reference Manual

Antenna

CMGPS

Extension cables

Connect to antenna Connect to CMGPS

Extension cables

Figure 9-4: CMGPS connected to antenna via 2 × 20 m extension cables

Figure 9-5: Adapter to connect the extension cables to CMGPS and antenna

For cases that may require an extension of the antenna cable, an optional set of 2 × 20 m cables is available from OMICRON. For ordering information, refer to table 9-4, "Ordering information" on page 87.

Page 79

9.3.2 CMIRIG-B

Figure 9-6: Typical test setup with

CMIRIG-B

(not true to scale)

CMC 353-Related Products and Accessories

Via the CMIRIG-B interface box you can connect devices to the CMC 353 test set that either transmit or receive the IRIG-B time reference signal (DC level shift protocol B00x). That way, two or more CMC test sets are synchronized. Furthermore, an optional CMGPS synchronization unit can be integrated into the test setup to serve as source of the synchronization moment or 1PPS signal, respectively. CMC 353 decodes (when receiving) or encodes (when transmitting) the IRIG-B protocol. The IRIG-B protocol extensions required by standard IEEE C37.118 are supported as well.

The most significant functional enhancement of those Test Universe test modules supporting the IRIG-B time reference is the starting and synchronizing of CMC 353 states (signal output) with high accuracy synchronous to the IRIG-B

time reference or PPS/PPX2 signal,

respectively; for example for PMU synchrophasor tests.

Test signals (e.g., 3 x current, 3 x voltage).

IRIG-B/PPS source, e.g. GPS receiver with IRIG-B output.

IRIG-B/PPS receiver, e.g. protection relay, PMU.

Optional CMGPS synchronization unit (depends on the application).

Requirements:

• CMC 353 standard test set with Ethernet ports.

• IRIG-B source or receiver with 5 V/TTL level; demodulated; DC level

shift protocol (B00x).

IRIG stands for Inter Range Instrumentation Group and represents a serial time code format.

PPS: pulses per second PPX: programmable PPS signal (pulse rate, e.g., 1 pulse per minute or one pulse per 10 seconds)

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CMC 353 Reference Manual

CMC 353 analog outputs

IRIG-B OUT

PPX OUT

CMGPS 1PPS, IRIG-B/PPS IN

Figure 9-7: CMIRIG-B timing in detail

Table 9-3: Timing specifications

CMIRIG-B timing specifications

Timing specifications

T1 (delay time PPS source to PPX OUT) < 1µs typ., 1.5µs max.

T2 (time skew PPX OUT to IRIG-B OUT) < ± 0.1µs typ., ± 0.5 µs max.

T3 (time error of time reference source to

analog outputs)

- Current outputs

- Voltage outputs

± 5µs typ., ± 20µs guar.

± 1µs typ., ± 5µs guar.

Valid for CMC 353 output frequencies < 100Hz and re-synchronized analog output signals.

For ordering information about the CMIRIG-B, refer to table 9-4, "Ordering information" on page 87.

For detailed information about the OMICRON CMIRIG-B interface box please refer to the CMIRIG-B Reference Manual.

Detailed information about the IRIG-B standard can be found, for example, in the IRIG SERIAL TIME CODE FORMATS publication at the url https://wsmrc2vger.wsmr.army.mil/rcc/manuals/200-04/index.html.

Detailed information about how to configure the Test Universe software component Time Trigger Configuration for the use of CMIRIG-B with or without CMGPS can be found in the CMIRIG-B Reference Manual and in the

Test Universe Help, topics Time Trigger Configuration and Hardware Configuration (IRIG-B & GPS tab).

Page 81

Figure 9-8:

Order number: @@@@@@

100TX to 100FX-SC Converter

CMC 353-Related Products and Accessories

9.4 100TX to 100FX-SC Converter

This converter connects the CMC 353 to a network via fiber optics.

The 100TX to 100FX-SC Converter transfers data from a 10/100Base-TX copper to a fiber interface. It is designed to receive both data and power from PoE networks, and to pass on the data to a fiber optics connection.

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CMC 353 Reference Manual

Order number: VEHK0112

Order number: VEHZ0009

9.5 Wiring Accessories

9.5.1 Standard Delivery Scope

The following three cs belong to the standard delivery scope of a CMC 353 test set. They can, however, also be ordered separately.

1. Flexible test lead

2 m (6 ft.) test lead to connect the CMC 353 output to other safety sockets of, for example, amplifiers, test objects or to banana adapters in control cabinets.

Specification: 1000 V/32 A

Amount supplied: 6 x red, 6 x black

2. Flexible jumper

Flexible jumper to connect current outputs in parallel (up to 32 A) or to short-out the neutrals of binary inputs.

Specification: 1000 V/32 A

Amount supplied: 4 x black

Page 83

Figure 9-9:

Order number: VEHS0009

Order number: VEHZ0060

The CMC Wiring Accessory Package

CMC 353-Related Products and Accessories

3. Flexible terminal adapter

Flexible terminal adapter to connect to screw-clamp terminals.

Specification: 1000 V/32 A

Amount supplied: 12 pieces

9.5.2 Optional CMC Wiring Accessory Package

The CMC Wiring Accessory Package contains the following articles:

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CMC 353 Reference Manual

5cm

1. Flexible test lead adapter

5 cm (2") test lead adapter with retractable sleeve to connect the CMC 353 output to non-safety sockets in combination with a regular flexible 2 m (6 ft.) test lead as shown at section 9.5.1.

Specification: 600 V/32 A

Amount: 6 x red, 6 x black

2. Flexible jumper

Flexible jumper to connect current outputs in parallel (up to 32 A) or to short-out the neutrals of binary inputs. Identical to article of standard delivery scope listed under 9.5.1.

Specification: 1000 V/32 A

Amount: 4 x black

3. Crocodile clamp

Crocodile clamps for secondary side to connect to pins or screw bolts.

Specification: 1000 V/32 A

Amount: 4 x red, 4 x black

Page 85

CMC 353-Related Products and Accessories

4. Flexible terminal adapter

Flexible terminal adapter to connect to screw-clamp terminals. Identical to article of standard delivery scope listed under 9.5.1.

Specification: 1000 V/32 A

Amount: 12 pieces

5. M4 (0.15") Cable Lug Adapters

Cable lug adapters for M4 (0.15") screws to connect regular test leads to screw-clamp terminals of SEL/ABB/GE relays (and others).

Specification: 1000 V/20 A

Amount: 20 pieces

6. M5 (0.2") Cable Lug Adapters

Cable lug adapters for M5 (0.2") screws to connect regular test leads to screw-clamp terminals of SEL/ABB/GE relays (and others).

Specification: 1000 V/20 A

Amount: 10 pieces

7. Cable Tie (Velcro fastener)

Cable Tie (Velcro fastener), length 150 mm (6"), black.

Amount: 10 pieces

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CMC 353 Reference Manual

CMC 353 test set

Test object (relay, meter...)

Plug for generator combination socket

VEHS0103

Generator combination cable

VEHK0103

Ampl.in

Ampl.in Ampl.out

Amplifier

CMA/CMS

ext. Interf.

LL out 1-6

CMC 353 test set

Notebook

(Ethernet)

Connection cables CMC 353 - amplifier

VEHK0003

Connection cable for computer

Ethernet:

1.5 m/5 ft. VEHK0022

3.0 m/10 ft. VEHK0622

Connection cable CMC 353 -CMLIB B

VEHK0003

CMLIB B

9.6 Ordering Information

Figure 9-10: Connection cables I

This section lists ordering information for optional equipment of the CMC 353 test set.

Figure 9-11: Connection cables II

Page 87

Table 9-4: Ordering information

CMC 353-Related Products and Accessories

Article Order no.

Amplifiers (

CMA 156 Current amplifier (6×25 A) VEHV1010

CMS 156 Voltage/current amplifier (3×250 V, 3×25 A) VEHV1030

CMControl-3 (

CMControl-3; upgrade for an existing CMC 353 (includes soft bag VEHP0013)

CMControl-3; add-on for a new CMC 353 VEHO2902

CMIRIG-B Interface box (

CMIRIG-B Interface box incl. all accessories VEHZ1150

CMIRIG-B Interface box VEHZ1151

Connection cable CMIRIG-B

CMGPS Synchronization unit (

CMGPS Synchronization unit, consisting of:

2 × 20 m antenna extension cable and SMA adapter VEHZ3003

→ section 9.1)

→ section 9.2)

→ section 9.3.2)

↔ CMC 353

→ section 9.3.1)

- CMGPS synchronization unit

- antenna

- 15 m antenna cable

- power supply unit

- 16-pole LEMO cable CMC-CMGPS

- carrying bag

VEHO2901

VEHK0003

VEHZ3000

100TX to 100FX-SC Converter (

Converter for data transfer from a 10/100Base-TX copper to a fiber interface. VEHZ0021

Connector

Plug for generator combination socket VEHS0103

Cables

Ethernet cable 1.5 m /5 ft. VEHK0022

Ethernet cable 3.0 m/10 ft. VEHK0622

Connection cable CMC 353-to-amplifier, CMLIB A/B or CMGPS

Generator combination cable VEHK0103

→ section 9.4)

VEHK0003

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CMC 353 Reference Manual

Article Order no.

Wiring accessories (→ section 9.5)

Flexible test lead 1000 V/32 A, 6 x red, 6 x black VEHK0112

CMC Wiring Accessory Package VEHZ0060

containing the following items:

1. Flexible test lead with retractable sleeve, 600 V/32 A, 6 x red, 6 x black

2. Flexible jumper, 600 V/32 A, 4 x black

3. Crocodile clamps, 1000 V/32 A, 4 x red, 4 x black

4. Flexible terminal adapter, 1000 V/32 A, black, 12 pcs.

5. M4 (0.15") Cable Lug Adapters, 1000 V/20 A, 20 pcs.

6. M5 (0.2") Cable Lug Adapters, 1000 V/20 A, 10 pcs.

7. Cable Tie (Velcro fastener), length 150 mm (6"), 10 pcs.

8. OMICRON Accessory Bag, 1 piece

Page 89

CMC 353-Related Products and Accessories

Article Order no.

Heavy-duty transport case with wheels and extendable handle for the CMC 353 test set with or without CMControl-3.

Soft bag for CMC 353 test set

VEHP0022

VEHP0023

Soft bag for CMC 353 test set with attached CMControl-3

VEHP0013

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CMC 353 Reference Manual

Page 91

Appendix

APPENDIX

The OMICRON Bootloader software

The OMICRON Bootloader software includes software parts developed by:

• Intel Corporation (IXP400 SW Release version 2.3)

• Intrinsyc Software (Intrinsyc Bootloader)

• Swedish Institute of Computer Science, Adam Dunkels (lwIP TCP/IP stack)

• Mark Adler (puff - decompress the deflate data format)

• Jean-loup Gailly and Mark Adler ("zlib" general purpose compression library)

The following copyright notices reproduce entirely the copyright notices provided by the source code owners.

IXP400 SW Release version 2.3

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

3. Neither the name of the Intel Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

This software is provided by the copyright holders and contributors "as is" and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright owner or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort(including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.

Intrinsyc Bootloader

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

Page 92

The OMICRON Bootloader Software - Copyright Notices

3. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed by Intrinsyc Software.

4. The name of Intrinsyc may not be used to endorse or promote products derived from this software without specific prior written permission.

This software is provided by Intrinsyc software and contributors "as is"' and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall Intrinsyc software be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.

lwIP TCP/IP stack

Author: Adam Dunkels <[email protected]>

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.

This software is provided by the author "as is'' and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the author be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.

puff (Mark Adler)

This software is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Mark Adler <[email protected]>

Page 93

Appendix

zlib (Jean-loup Gailly and Mark Adler)

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

Mark Adler <[email protected]>

Jean-loup Gailly <[email protected]>

The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).

Page 94

The OMICRON Bootloader Software - Copyright Notices

Page 95

Contact Information / Technical Support

North and South America

OMICRON electronics Corp. USA

12 Greenway Plaza, Suite 1510

Houston, TX 77046, USA

Phone: +1 713 830-4660 or 1 800 OMICRON

E-Mail: [email protected]

Web: http://www.omicronusa.com

Asia, Pacific

OMICRON electronics Asia Ltd.

Suite 2006, 20/F, Tower 2

The Gateway, Harbour City

Kowloon, Hong Kong S.A.R.

Phone: +852 2634 0377

E-Mail: [email protected]

Web: http://www.omicron.at

Europe, Africa, Middle East

OMICRON electronics GmbH

Oberes Ried 1

6833 Klaus, Austria

Phone: +43 5523 507-333

E-Mail: [email protected]

Web: http://www.omicron.at

For addresses of OMICRON offices with customer service centers, regional sales offices or offices for training, consulting and commissioning, please see the Contact section of our Web site http://www.omicron.at

Page 96

Contact Information / Technical Support

Page 97

INDEX

Index

accessories

CMA/S current/voltage amplifiers

................................................................77

CMGPS CMIRIG-B connecting cables ordering information wiring accessories

accuracy

amplitude accuracy of amplifiers AUX DC supply CMGPS CMIRIG-B LL outputs (SELV) signal generation

address

OMICRON addresses

altitude

max. altitude for operation

amplifier

CMA current amplifier CMS voltage amplifier current amplifier (output) of CMC 353 voltage amplifier (output) of CMC 353

amplifiers

ordering information

............................................................79

................................................82

....................................................57

................................................................77

............................................................79

................................................53

..................................................25

binary inputs

general data

binary outputs

binary output relays 1-4 LL binary outputs

.........................................................58

..................................................54

.........................75

.............................................86

..........................75

..........................................95

...................................63

..........................................75

..................22

.................21

.............................................87

.......................................56

calibration

valid period of factory calibration

CAN/CSA

certified safety standards

cleaning of CMC 353

..................................................................... 77

CMGPS

ordering information

CMIRIG-B

connecting cables

contact information

converter for fiber optics

counter inputs 100 kHz (LL)

.................................................................. 79

ordering information

how to use safely ordering information

OMICRON addresses

................................................. 63

............................................ 87

................................................ 13

............................................ 86

......................................... 95

............................................ 81

...................................... 61

......................... 39

.................................... 64

debouncing input signals ........................................... 60

deglitching input signals

dimensions of CMC 353

............................................ 59

............................................ 63

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CMC 353 Reference Manual

ECM-compatibility .......................................................64

electromagnetic compatibility (EMC)

e-mail

OMICRON addresses

certified safety standards

Ethernet

Power over Ethernet

Ethernet cables

ordering information

external interface (ext.Interf.)

..........................................95

............................................62

.............................................86

..........................64

.....................................64

.....................................54

fiber optics ..................................................................81

frequency

output accuracy output drift output range settings output resolution

front panel components of CMC 353

fuse

changing the

......................................................................39

type

....................................................41

............................................................41

...........................................41

..................................................41

..........................27

........................................................10

generator combination socket

ordering information voltage & current outputs

.............................................86

.....................................30

hotline .........................................................................95

housing specs of CMC 353

humidity, relative

.........................................................63

........................................63

IEC

certified safety standards

increasing output power (operating modes)

inputs

binary inputs 1-10 counter input 100 kHz (LL)

ISO9001

certified safety standards

.................................... 64

.............. 65

................................................ 58

.................................. 61

.................................... 64

LL out (SELV low level outputs) ................................. 52

nominal mains current ............................................... 39

operating temperature of CMC 353 ........................... 63

options

for CMC 353 (overview)

ordering information for CMC 353 accessories

output power

per phase voltage outputs (3-phase & single phase)

outputs

current outputs - technical data low-level outputs (LL out) serial connection current 1 & 2 voltage outputs - operational limitations voltage outputs - technical data

overheating

of current or voltage amplifier

overload warning

current amplifier voltage amplifier

............................................................ 44

...................................... 12

......... 86

........... 48

........................... 43

.................................... 52

............................ 66

.............. 51

........................... 48

.............................. 73

.................................................. 22

.................................................. 21

Page 99

Index

phase

output error output range output resolution

PoE (Power over Ethernet)

power

weak mains supply and output power

power supply range of CMC 353

.............................................43, 48, 53

.........................................................41

..................................................41

........................................62

..................51

................................25

relative humidity .........................................................63

resolution

current outputs

...................................................................53

LL out phase output voltage outputs

.....................................................43

........................................................41

.....................................................48

safety

certified safety standards instructions use of connecting cables

self-test of hardware

SELV

low level outputs

serial connection current 1 & 2

shock and vibration (technical data)

shutdown due to overheating

signal generation

standards

certified safety standards

storage temperature

supply voltage and output power

synchronization via GPS

synchronized operation

system components of CMC 353

.............................................................8

...................................................17

........................................................25

...................................................63

.....................................64

.....................................13

...................................................52

...................................66

...........................63

.....................................73

.....................................64

................................51

..................................... 36, 77

..............................................41

...............................12

Technical Support ...................................................... 95

temperature

operating temperature of CMC 353 storage temperature

temperature drift of output signals

test

hardware self-test

test leads

accessories

Test Universe software

Trigger on overload (current outputs)

............................................ 63

................................................ 17

......................................................... 82

................................................ 7

..................... 63

............................. 41

........................ 43

certified safety standards

.................................... 64

vibration ..................................................................... 63

weak mains supply and output power ....................... 51

Web site

OMICRON Web site

weight of CMC 353

wiring accessory package (ordering information)

............................................ 95

.................................................... 63

...... 83

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CMC 353 Reference Manual

100