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Technical Data

6.11.7.1

Accuracy of Frequency Measurement

The permitted input frequency range depends on the specified sampling
rate:

Table 6-46:
Sampling rate and input
frequency range

Figure 6-31:
Accuracy of frequency
measurement as function
of the voltage signal

Conditions: sampling rate 9.48 kHz, fin=20 Hz ... 1 kHz

Note:

Through recursive averaging, the measurement uncertainty can be

further reduced.

Sampling rate

Input frequency range

28.44 kHz

49 Hz ... 3400 Hz

9.48 kHz

17 Hz ... 1100 Hz

3.16 kHz

5 Hz ... 380 Hz

Uncertainty in Frequency Measurement

-0,05

-0,04

-0,03

-0,02

-0,01

0,01

0,02

0,03

0,04

0,05

100

Voltage signal in % of full range

Frequeny Error / Hz

Average

Avg+3Sigmamax

Avg-3Sigmamax

Accuracy of frequency measurement

as function of the voltage signal

requen

err

Voltage signal in % of full range

Summary of Contents for CMC 356

Page 1: ...CMC 356 Reference Manual ...

Page 2: ...odied 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 o...

Page 3: ...st Lead Adapter for Non Safety Sockets 16 3 3 Regular Test Leads for Safety Sockets 17 3 3 1 Terminal adapters 17 3 3 2 M4 0 15 Cable Lug Adapters 18 3 3 3 M5 0 20 Cable Lug Adapters 18 3 4 Starting the Test System 19 4 Setup and Function 21 4 1 Block Diagram 22 4 1 1 Voltage Output Voltage Amplifier 23 4 1 2 Current Output Current Amplifier 24 4 1 3 Binary Analog Input Binary Inputs 1 10 25 4 1 4...

Page 4: ... 38 5 2 7 1 External Interface ext Interf 38 5 2 7 2 LL out 1 6 Low Level Outputs 1 6 39 5 2 7 3 LL out 7 12 Low Level Outputs 7 12 Option LLO 2 39 6 Technical Data 41 6 1 Main Power Supply 41 6 2 Insulation Coordination 42 6 3 Outputs 43 6 3 1 Extended Frequency Range 44 6 3 2 Current Outputs 45 6 3 3 Voltage Outputs 50 6 3 3 1 Power Diagram for Three Phase Operation 51 6 3 3 2 Power Diagram for ...

Page 5: ... and Certificates 69 6 10 Compliance Statements 70 6 10 1 Declaration of Conformity EU 70 6 10 2 FCC Compliance USA 70 6 10 3 Declaration of Compliance Canada 70 6 11 Option ELT 1 71 6 11 1 General Data 72 6 11 2 Analog DC Input VDC IDC 73 6 11 3 Accuracy of the Analog DC Input 74 6 11 4 Measuring Currents 75 6 11 5 Accuracy of Binary Analog Inputs with Option ELT 1 76 6 11 6 Multimeter Mode 77 6 ...

Page 6: ...95 7 2 Single Phase Operation of the CMC 356 96 7 2 1 1 x 32 A High Burden Mode L L L L 96 7 2 2 1 x 64 A High Burden and High Current Mode L L 97 7 2 3 1 x 128 A High Current Mode LL LN 98 7 2 4 Single Phase Voltage 99 7 3 Two Phase Operation 100 7 3 1 2 x 64 A High Current Mode LL LN 100 7 3 2 2 x 32 A High Burden Mode L L 101 7 4 Three Phase Current Mode with High Burden 102 7 5 Operation with ...

Page 7: ...verse 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 Keep this manual during the entire service life of the product and always have it available for reference Keep this manual during the entire service life of the product and always have it available fo...

Page 8: ...ed by for example wrong connections short circuits technically inadequate or faulty equipment or by disregarding the safety notes of the following sections Rules for Use The CMC 356 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 cu...

Page 9: ...ducation on the CMC 356 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 356 into operation The CMC 356 must only be used from a power outlet that has a protective earth The mains cable must be r...

Page 10: ... 356 when explosive gas or vapors are present Connect only external devices to the CMC 356 interfaces USB ETH LL out and ext Interf that meet the requirements for SELV equipment SELV Safety Extra Low Voltage 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 356 make sure that the air slo...

Page 11: ...etween 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 41 for more information ...

Page 12: ...f in the household garbage At the end of its service life bring the test set to a collecting point for electrical recycling in accordance with the local legal regulations Countries outside the EU Contact the respective authorities for the valid environmental regulations in the country Dispose of the test set in accordance with the legal environmental regulations in the country ...

Page 13: ...the CMC 356 Output of test quantities 4 voltage two galvanically separated three phase current outputs Capability of protection testing with IEC 61850 devices Control of external amplifiers through the low level interface 6 additional test signals with a standard test set at LL out 1 6 six more test signals with the LLO 2 low level outputs 7 12 option Supply of DC voltages to the test object Outpu...

Page 14: ...f this reference manual It can directly be opened by a mouse click from the Test Universe Help topic User Manuals 2 1 Options Available for the CMC 356 Test Set The following options are available for the CMC 356 test set ELT 1 This hardware option enables Measurement of analog signals using the combined BINARY ANALOG INPUT sockets High precision measurement of DC signals using the ANALOG DC INPUT...

Page 15: ...rictions refer to 6 3 Outputs on page 43 3 OPERATING THE CMC 356 Only operate or even turn on the CMC 356 after you have read this reference manual and fully understood the instructions herein 3 1 System Components Before operating the CMC 356 for the first time use the packing list to verify that all components of the test system are available To set the CMC 356 into operation you need the follow...

Page 16: ... 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 356 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 Plug only the regular test leads of 2 0 m 6 ft length into the CMC 356 output saf...

Page 17: ...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 Regular test lead or to safety socket e g at test ...

Page 18: ...terminal strip first and fasten it before connecting it to a test lead 3 3 3 M5 0 20 Cable Lug Adapters 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 The cable lugs have blank ends Therefore turn off the voltage before connecting such a lug Always insert the cable lug with its bla...

Page 19: ...o set up a test with Test Object and Hardware Configuration 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 Test Universe Software Manua...

Page 20: ...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 Test Universe Software Manuals In this topic you find a direct link at Getting Started To view the manual click the link 2 Connect the CMC 356 test set to the mains 3 Turn on both devices 4 Start the OMICRON Test Universe software A comprehensive hardware test ...

Page 21: ... and the CMC 356 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 356 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 ...

Page 22: ...ts and DC inputs are not available 1 1 DC AC Main Group SELV Group AUX DC Internal Supplies VOLTAGE CURRENT A CURRENT B CPU System Control Signal Generator PE Mains Host Interface DC DC PC Ext Ampl Ext Ampl Counter 1 2 Bin Out 11 14 CMGPS IRIG B 3 4 2 1 BINARY OUTPUT LL out 7 12 optional LL out 1 6 ext Interf U DC I DC ADC ANALOG DC INPUTS Control Control Control Control AUX DC VOLTAGE OUTPUT CURR...

Page 23: ...voltage outputs have a common neutral N and are galvanically separated from all other outputs of the CMC 356 The two black sockets labeled N are galvanically connected with one another 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 outpu...

Page 24: ...Apeak 32Arms the CMC 356 switches off with the error message current on 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 outp...

Page 25: ... Hardware Configuration module of the OMICRON Test Universe 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 Moreover the binary inputs 1 10 can be used as counter inputs for input frequencies up to 3 kHz More detailed informati...

Page 26: ...ed 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 t...

Page 27: ... synchronization options using either the CMGPS 588 or the CMGPS synchronization unit or the CMIRIG B interface box as time source 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 The power supply to th...

Page 28: ...ity The CMC 356 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 acc...

Page 29: ... current inputs 0 10 V DC voltage inputs BINARY ANALOG INPUT 10 binary inputs in 5 galvanically separated groups Hardware option ELT 1 The inputs can be configured as analog measurement inputs Without option ELT 1 only binary inputs are available CURRENT OUTPUT Group A 3 x32 Arms output of the internal current amplifier also applied to the generator combination socket Group B 3 x32 Arms output of ...

Page 30: ...Vth 20 V 3 2 kΩ Vth 132 kΩ Vth 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 Note For simplified circuit diagrams of the inputs BINARY ANALOG INPUTS and AN...

Page 31: ...voltage outputs 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 VOLTAGE OUTPUT 4 x 300 Vrms CURRENT OUTPUT A 3 x 32 Arms CURRENT OUTPUT B 3 x 32 Arms 1 2 3 N 4 N 1 2 3 N 1 2 3 N ...

Page 32: ...nation socket Front view View onto the connector from the rear cable wiring side 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 c...

Page 33: ...3 Table 5 2 Manufacturer ordering information You can order the plug for generator combination socket directly from OMICRON Pin Signal 1 VOLTAGE N 2 VOLTAGE 3 3 VOLTAGE 2 4 VOLTAGE 1 1 CURRENT A 1 2 CURRENT A N 3 CURRENT A 3 4 CURRENT A 2 Description of the generator combination socket Description SPEAKON LINE 8 pole Article Number NL8FC Manufacturer Neutrik www neutrik com ...

Page 34: ...e the OMICRON supplied cable only Note that a Test Universe software of version 3 0 or later plus the matching CMC firmware is required for the USB port to work For the technical data of the USB port refer to 6 5 1 The NET 1C Board on page 65 To connect to low resistance grounding bars for example Fans for power supply Power supply Fuse T12 5 AH Interface ext Interf 4 mm 0 16 socket for additional...

Page 35: ...e cable For detailed technical data about the Ethernet ports please refer to section 6 5 Technical Data of the Communication Ports on page 65 5 2 3 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 tes...

Page 36: ...twork 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 5 2 5 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...

Page 37: ... integrated in the CMC test set 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 a DHCP server in the network the DHCP feature of the CMC test set remains inactive If the IP settings conflict with IP settings of other devices in the network it is possible to rese...

Page 38: ...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 5 2 7 1 External Interface ext Interf 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...

Page 39: ...necting cable that was supplied with the amplifier For more detailed information please refer to the technical data section 6 3 5 Low Level Outputs LL out for External Amplifiers on page 54 5 2 7 3 LL out 7 12 Low Level Outputs 7 12 Option LLO 2 The SELV interface connector LL out 7 12 is optionally available for the CMC 356 test set The outputs 7 12 extend the low level outputs 1 6 by two more in...

Page 40: ...CMC 356 Reference Manual 40 ...

Page 41: ...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 6 1 Main Power Supply Table 6 1 Power supply data Main Power Supply Connection Connector according to IEC 60320 1 C14 Voltage single phase nominal voltage operational range 100 240 VAC 85 264 VAC Power fuse T 12 5 AH 250 V 5 x 20 mm Sc...

Page 42: ...roups on CMC 356 front panel VOLTAGE OUTPUT CURRENT OUTPUT A B AUX DC BINARY OUTPUT BINARY ANALOG INPUT ANALOG DC INPUT Basic insulation with maximum voltage of 600 Vrms to ground Clearance 3 mm 0 12 Creepage 6 mm 0 24 Test voltage 2200 Vrms Insulation of functional groups on front panel from each other Working insulation Clearance 1 mm 0 04 Creepage 1 mm 0 04 Test voltage 1500 VDC Measurement cat...

Page 43: ...dal signals2 harmonics interharmonics3 transient signals 1 If you purchased the option FL 6 the maximum output frequency is constrained to 599 Hz 2 Amplitude derating for current outputs at frequencies above 380 Hz 3 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 10 1000 Hz 10 3000 Hz DC 3 1 kHz Frequ...

Page 44: ... 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 Table 6 4 Extended frequency range 1 3 kHz Extended Frequency Range 1 3 kHz Typical Guaranteed Low Level Outputs1 Phase error Amplitude error 1 No extended frequency range suppo...

Page 45: ...rror 0 3 of rg Harmonic distortion THD N 5 6 0 05 0 15 Phase error5 0 05 0 2 DC offset current 3 mA 10 mA Resolution 1 mA 2 mA 2 phases parallel Frequency range8 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 socket9 OUTPUT A only Insul...

Page 46: ...n of the CMC 356 on page 96 0 100 200 300 400 500 600 700 800 900 1000 0 10 20 30 40 50 60 Output Current Arms Output Power per Phase VA W S 6 per phase VA P 6 per phase W S 3 A B per phase VA P 3 A B per phase W P 3 one triple per phase W Output current in Arms Output power per phase in VA W per phase in VA per phase in W A B phase in VA A B phase in W one triple per phase in W 0 200 400 600 800 ...

Page 47: ...e Voltage Vpeak 1 low sensitive 32A L L L L 1 high sensitive 32A L L L L 1 low sensitive 64A L L L L 1 high sensitive 64A L L L L 1 low sensitive 128A LL LN 1 high sensitive 128A LL LN LL LN 6 low sensitive 32A L N 6 high sensitive 32A L N 3 low sensitive 64A L N 3 high sensitive 64A L N Output current in Arms Compliance voltage in V peak low sensitive 32 A L L L L high sensitive 32 A L L L L low ...

Page 48: ...require more than 64 A we recommend to use the 1 x 64 A configuration rather than the 128 A one because the 1 x 64 A configuration provides more continuous output power 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 t...

Page 49: ... I A P W duty cycle t1 min ton s toff s 0 25 0 1200 100 30 1800 0 50 0 1200 100 30 1800 26 1400 80 7 5 80 20 52 1400 80 7 5 80 20 29 1300 75 6 0 60 20 58 1300 75 6 0 60 20 32 1200 71 3 5 50 20 64 1200 71 3 5 50 20 1 x 128 A LL LN I A P W duty cycle t1 min ton s toff s 0 80 0 700 100 30 0 1800 0 100 450 60 4 9 30 20 120 300 43 2 6 15 20 128 200 38 2 0 12 20 ...

Page 50: ...hase AC L N 1 phase AC L L DC L N 3 x 0 300 V 4 x 0 300 V 1 x 0 300 V 1 x 0 600 V 4 x 0 300 V Output power2 Typical Guaranteed 3 phase AC3 4 phase AC4 1 phase AC L N 1 phase AC L L DC L N 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 3 x 85 VA at 85 300 V 4 x 50 VA at 85 300 V 1 x 150 VA at 75 300 V 1 x 250 VA at 200 600 V 1 x 3...

Page 51: ...Technical Data 51 6 3 3 1 Power Diagram for Three Phase Operation Figure 6 7 Power diagram for three phase operation Output voltage in V Output power per phase in VA typical guaranteed ...

Page 52: ...Operation Also refer to section 7 2 4 Single Phase Voltage on page 99 Figure 6 8 Single phase operation L N Figure 6 9 Single phase operation L L Output voltage L N in V Output power in VA typical guaranteed Output voltage L L in V Output power in VA typical guaranteed ...

Page 53: ...f low line voltages no other significant degradations in the technical data of the CMC 356 occur Table 6 8 Typical total output power at different mains voltages Mains voltage Current Typical total output power Currents only Currents AUX DC voltage 230V 6 x 15 A 1600 W 1190 W 300 W 6 x 25 A 1470 W 1060 W 300 W 6 x 32 A 1320 W 910 W 300 W 115V1 1 After 15 min of continuous operation at full output ...

Page 54: ... 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 Veff nominal 0 to 10 Vpeak Both the selection of the particular amplifier as well as the specification of the range of the amplifier takes place in the Test Universe software Table 6 9 Pin assignment of LL ou...

Page 55: ...HD N 3 3 Values at nominal voltage 10 Vpeak 50 60 Hz and 20 kHz measurement bandwidth Typical 0 015 Guaranteed 0 05 Phase error4 4 Valid for sinusoidal signals at 50 60 Hz Typical 0 02 Guaranteed 0 1 DC offset voltage Typical 150 µV Guaranteed 1 5 mV Unconventional CT VT simulation Linear or Rogowski5 mode 5 When simulating Rogowski sensors the output voltage is proportional to the derivative of t...

Page 56: ...rom the cable wiring side Table 6 12 Data of the low level binary outputs 11 14 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 4 Low Level Transistor Binary Outputs Bin out 11 14 Type Open collector transistor...

Page 57: ...iption about the connection sockets LL out and ext Interf visit the Web site www lemo com Rear side of CMC 356 Rpullup Inside of CMC 356 16 V 47 Ω 6 8 kΩ 22 kΩ Vextern 5 15 V Binary outputs 11 14 ext Interf Ordering Information Connector for one guide notch and pull relief for ext Interf FGG 2B 316 CLAD 72Z Black anti bend cable cover GMA 2B 070 DN ...

Page 58: ...ential free contacts software controlled AC loading Vmax 300 VAC Imax 8 A Pmax 2000 VA DC loading Vmax 300 VDC Imax 8 A Pmax 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 VAC 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 Insulati...

Page 59: ...C max 0 4 A 0 264 VDC max 0 2 A Power Max 50 W Accuracy1 1 Percentage is with respect to each range s full scale Error typical 2 guaranteed 5 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 all SELV interfaces ...

Page 60: ...ion time Max 220 µs Sampling frequency 10 kHz Time resolution 100 µs Max measuring time Unlimited Debounce time 0 25 ms refer to page 62 Deglitch time 0 25 ms refer to page 62 Counting function counter frequency pulse width 3 kHz per input 150 µs 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...

Page 61: ...hown in of reading rd of upper range value rg 5 of rd 0 5 of rg Threshold voltage hysteresis Range I typ 60 mV Range II typ 900 mV Input impedance2 Threshold 0 20V Threshold 20 300V 2 Refer to figure 5 2 Simplified circuit diagrams of binary inputs and outputs CMC 356 standard without option ELT 1 installed on page 30 210 kΩ 135 kΩ Data for Potential Free Operation1 1 Refer to figure 5 2 Simplifie...

Page 62: ...at 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 356 and are calculated in real time The figure below illustrates the debounce function On the right hand side o...

Page 63: ...e cable wiring side Table 6 19 Counter inputs 100 kHz 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 2 Counter Inputs Max counter frequency 100 kHz Pulse width 3 µs high and low signal Switch threshold pos edg...

Page 64: ...urer description about the connection sockets LL out 1 6 and ext Interf visit the Web site www lemo com Rear side of CMC 356 15 V 100 kΩ 22 kΩ 47 pF Inside of CMC 356 Counter inputs 1 2 ext Interf Ordering Information Connector for one guide notch and pull relief for ext Interf FGG 2B 316 CLAD 72Z Black anti bend cable cover GMA 2B 070 DN ...

Page 65: ...CMC 356 test sets with NET 1 board can be upgraded with the new NET 1C board to be able to communicate with the new CMControl and have Ethernet as well as USB access at the same time 6 5 1 The NET 1C Board Table 6 21 Technical data of the NET 1C communication ports USB and ETH1 ETH2 NET 1C USB port and Ethernet ports ETH1 ETH2 USB type USB 2 0 full speed up to 12 Mbit s USB connector USB type B US...

Page 66: ...nnector 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 NET 1 Ethernet port ETH1 Type 10 100Base TX 10 100Mbit twisted pair auto MDI MDIX or auto crossover Connector RJ45 Cable type ...

Page 67: ...thernet port ETH2 Type 100Base FX 100Mbit fiber duplex Connector MT RJ Cable type 50 125 µm or 62 5 125 µm duplex patch cable Cable length 1 km 0 62 miles possible Status idication Green LED physical link present Yellow LED traffic on interface This is a product of Laser Class 1 IEC 60825 ...

Page 68: ...ins 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 60068 2 78 Dynamics Vibration Tested according to IEC 60068 2 6 frequency range 10 150 Hz acceleration 2 g continuous 20 m s 10 cycles per axis Shock Tested according to IEC 60068 2 27 15...

Page 69: ...C 61326 1 IEC 61000 6 4 IEC 61000 3 2 3 FCC Subpart B of Part 15 Class A Immunity Europe International EN 61326 1 EN 61000 6 2 EN 61000 4 2 3 4 5 6 11 IEC 61326 1 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 Man...

Page 70: ...ection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the u...

Page 71: ...f DC components DC voltages or DC currents Real time indication of effective values true RMS for all measurement signals Peak values indication Upeak Ipeak Phase angles with reference to a given input signal Real time calculation of apparent reactive and active power in any configuration Frequency and spectrum indication harmonic diagrams of periodic signals Capturing of transient input signals wi...

Page 72: ...e measured values are passed through an isolation amplifier to the Measurement Unit and digitized by an A D converter The further processing is done by a high performance floating point digital signal processor DSP As such apparent power reactive power active power etc can be provided in real time and transmitted to the PC The analog measurement inputs have five measurement ranges that can be conf...

Page 73: ...he measurement unit consists of a highly accurate voltage reference one ADC Analog Digital Converter for each input and the respective input circuits i e accurate voltage divider shunt filter The DC measurement unit measures the input signals VDC and IDC and performs the evaluation and forwarding of the measurement values Input IDC has two measurement ranges 0 20 mA and 0 1mA The input is protecte...

Page 74: ...g means n of upper range value Guaranteed error 0 02 of rg Input impedance Approx 15 Ω Connection 4 mm 0 16 banana connectors Insulation Insulation to all other front panel connections Reinforced insulation from all SELV interfaces and from power supply Not galvanically isolated from VDC DC Voltage Measurement Input VDC Measurement range 0 10 V Max input voltage 11 V Input impedance 1 MΩ Max input...

Page 75: ...g suitable active current clamps with voltage outputs or shunt resistors OMICRON offers the C PROBE1 as a suitable current clamp The C PROBE1 is not included in the scope of delivery of option ELT 1 and thus has to be ordered separately For further information please contact OMICRON electronics refer to section OMICRON Service Centers on page 109 ...

Page 76: ...e installation of option ELT 1 Figure 6 19 Simplified diagrams of analog and binary inputs with option ELT 1 installed ANALOG DC INPUT Only available with option ELT 1 PTC 0 20 mA 0 10 V BINARY ANALOG INPUT 500kΩ 500kΩ 3 10 identical Circuit diagram of a binary input for potential free operation 240 kΩ 500kΩ 25 pF Vin Vin 2 5V 12V Vcomp 1 MΩ ...

Page 77: ...0 V 2 mV 20 mV 200 mV 2 V 20 V Max input voltage CAT II 600 Vrms 850 Vpk CAT III 300 Vrms CAT IV 150 Vrms Threshold voltage accuracy1 per range 100 mV 1 V 10 V 100 V 600 V 1 Valid for positive voltage signal edge percentage is shown in respect to each range s full scale Error typical 2 guaranteed 4 typical 5 guaranteed 10 Threshold voltage hysteresis 100 mV 1 V 10 V 100 V 600 V Typical 3 5 of rang...

Page 78: ...ange 100 mV Frequency range Accuracy Typical Guaranteed DC 0 15 0 40 10 Hz 100 Hz 0 06 0 15 10 Hz 1 kHz 0 06 0 11 0 25 10 Hz 10 kHz 0 06 0 7 1 1 Frequency range Accuracy Typical Guaranteed DC 0 15 0 45 10 Hz 100 Hz 0 1 0 3 10 Hz 1 kHz 0 15 0 2 0 5 10 Hz 10 kHz 0 15 1 0 2 Frequency range Accuracy Typical Guaranteed DC 0 15 0 45 10 Hz 100 Hz 0 08 0 2 10 Hz 1 kHz 0 1 0 3 0 5 10 Hz 4 kHz sampling rate...

Page 79: ...igmamax value of an analog input are determined from 50 measurement values Frequency Response in the 100 V Range SR 28 44 kHz 2 5 2 1 5 1 0 5 0 0 5 1 0 2 4 6 8 10 12 14 Frequency kHz Rel Error Maximum 3Sigmamax Minimum 3Sigmamax Frequency response in the 100 V range SR 28 44 kHz Frequency in kHz Rel error in Actual Expected Full scale x 100 Relative error Frequency Response in the 100 V Range SR 9...

Page 80: ...a neighboring channel of another potential group is greater than 120 dB in all measurement ranges f 50 Hz or 500 Hz 1 a b 3Sigmamax represents the maximum of the 3Sigma values of all 10 input channels The 3Sigmamax value of an analog input are determined from 50 measurement values AC Linearity in the 100 V Range 0 04 0 03 0 02 0 01 0 0 01 0 02 0 03 0 04 0 10 20 30 40 50 60 70 80 90 100 RMS Amplitu...

Page 81: ...nction of the input voltage Phase CH1 CH2 Range 100 V f 50 Hz 0 0 05 0 1 0 15 0 2 0 25 0 3 1 10 100 Amplitude CH2 Vrms Phase Error CH1 10V CH1 70V CH1 50V Phase error in Phase error as function of the input voltage Phase CH1 CH2 range 100 V f 50 Hz Amplitude CH2 in Vrms Phase Error as function of the sampling rate fin 50Hz R 100V 0 3 3 5 0 0 6 3 0 1 1 4 0 2 6 8 0 0 4 3 0 0 9 9 0 2 2 4 0 2 1 5 0 1 ...

Page 82: ...ts less than 0 2 the sign positive or negative of the measurement results can not be definitely determined If this causes a problem please refer to the phase measurement in the harmonic analysis 3 For measuring phase the input voltage should be greater than 5 of full scale An overload of the measurement channel does not negatively affect the obtainable accuracy Phase Error as a Function of Frequen...

Page 83: ...ion greater than 10 from measurement full scale duty cycle 50 Note With the harmonic analysis input frequencies up to 3 4 kHz can be measured Error in Frequency Measurement as a Function of the input voltage Measured over 50 Periods 0 001 0 01 0 1 1 10 100 1000 Voltage signal in of full range Rel Frequency Error Error in frequency measurement as a function of the input voltage measured over 50 per...

Page 84: ...the apparent power error of the current clamp is not taken into account Table 6 41 Sampling rates 28 44kHz 9 48kHz 3 16kHz Table 6 42 Sampling rate 28 44kHz P 1 T u t i t t d 0 T Q S 2 P 2 sign_Q 1 T u t 2 t d 0 T 1 T i t 2 t d 0 T Frequency range Power Accuracy1 AC Typical Guaranteed 10 Hz 100 Hz S 0 3 0 7 P 0 3 0 7 Q 0 8 2 Frequency range Power Accuracy1 1 S Apparent power P Active power Q React...

Page 85: ...Frequency range Power Accuracy1 AC Typical Guaranteed 10 Hz 750 Hz S 0 3 0 7 1 8 10 Hz 750 Hz P 0 3 0 7 1 8 10 Hz 750 Hz Q 0 8 1 2 2 5 Frequency range Power Accuracy1 AC Typical Guaranteed 10 Hz 250 Hz S 0 3 0 5 1 3 10 Hz 250 Hz P 0 3 0 5 1 3 10 Hz 250 Hz Q 0 8 1 2 2 Power Accuracy1 1 S Apparent power P Active power Q Reactive power DC Typical Guaranteed P S 0 3 0 9 Actual Expected Full scale x 10...

Page 86: ...44kHz f 50Hz 0 0 02 0 04 0 06 0 08 0 1 0 12 0 14 0 16 0 18 0 2 0 10 20 30 40 50 60 70 80 90 100 Excitation CH1 CH2 Rel Error phi 1 phi 60 cos phi 0 01 89 4 Typical error of apparent power S as function of the excitation fs 28 44 kHz f 50 Hz Rel error in Excitation CH1 CH2 in Typ Error real power P as a function of the excitation fs 28 44kHz f 50Hz 0 05 0 0 05 0 1 0 15 0 2 0 10 20 30 40 50 60 70 80...

Page 87: ...r reactive power Q as a function of the excitation fs 28 44kHz f 50Hz 0 15 0 1 0 05 0 0 05 0 1 0 15 0 2 0 25 0 3 0 10 20 30 40 50 60 70 80 90 100 Excitation CH1 CH2 Rel Error phi 1 phi 60 cos phi 0 01 89 4 Typical error of reactive power Q as function of the excitation fs 28 44 kHz f 50 Hz Rel error in Excitation CH1 CH2 in 1 The 3Sigma values are determined from 50 measurement values Typ Error re...

Page 88: ... operating mode is designed for measuring stationary signals e g not sinusoid shaped The input signal is separated into fundamental and harmonic waves Fourier Analysis The following items are measured frequency of the fundamental wave amplitude of the fundamental and harmonic waves phase shifts between the fundamental and harmonic waves also from the different channels The input signals are captur...

Page 89: ...n 20 Hz 1 kHz Note Through recursive averaging the measurement uncertainty can be further reduced Sampling rate Input frequency range 28 44 kHz 49 Hz 3400 Hz 9 48 kHz 17 Hz 1100 Hz 3 16 kHz 5 Hz 380 Hz Uncertainty in Frequency Measurement 0 05 0 04 0 03 0 02 0 01 0 0 01 0 02 0 03 0 04 0 05 1 10 100 Voltage signal in of full range Frequeny Error Hz Average Avg 3Sigmamax Avg 3Sigmamax Accuracy of fr...

Page 90: ...0 V 100 V 10 V 1 V Table 6 49 Sampling rate 28 44 kHz measurement range 100 mV Table 6 50 Sampling rate 9 48 kHz 3 16 kHz measurement range 600 V 100 V 10 V 1 V Sampling rate Input frequency range 28 44 kHz 100 Hz fmin 3200 Hz 9 48 kHz 30 Hz fmin 1000 Hz 3 6 kHz 10 Hz fmin 350 Hz Frequency range Accuracy Typical Guaranteed fmin 1 kHz 0 1 0 3 fmin 10 kHz 0 1 0 7 1 1 Frequency range Accuracy Typical...

Page 91: ...eraging the measurement uncertainty can be reduced further Frequency range Accuracy Typical Guaranteed fmin 100 Hz 0 15 0 4 fmin 1 kHz 0 2 0 5 0 8 fmin 4 kHz sampling rate 9 48 kHz 0 2 1 0 1 5 fmin 1 4 kHz sampling rate 3 16 kHz 0 25 1 0 2 0 Sampling rate Input frequency range 28 44 kHz 100 Hz 3200 Hz 9 48 kHz 30 Hz 1000 Hz 3 16 kHz 10 Hz 350 Hz Uncertainty phase measurement as a function of Excit...

Page 92: ...ndow relative to the trigger event can be specified The trigger delay can be positive recording begins after the trigger event or negative recording begins already before the trigger event Figure 6 33 Illustration of the relationship between trigger events trigger delay and recording time Note More details about triggering methods can be found in the OMICRON Test Universe Help and in the practical...

Page 93: ...hart Each selected measurement function appears in a separate diagram i e all frequency measurements in the frequency diagram RMS current and voltage appear in separate diagrams Time is displayed in seconds on the x axis The diagram is scrolled from right to left as new data is recorded Number of active channels Maximum recording time s at fs 28 4 kHz Maximum recording time s at fs 9 48 kHz Maximu...

Page 94: ...These six high accuracy analog signal sources can serve to either control an external amplifier or to directly provide small signal outputs The outputs 7 12 extend the low level outputs 1 6 LL out 1 6 by two more independent generator triples Outputs 7 12 are technically identical to outputs 1 6 For more information please refer section 6 3 5 Low Level Outputs LL out for External Amplifiers on pag...

Page 95: ... 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 throug...

Page 96: ...T B are connected in series The currents 1 and 2 of a group are phase opposite This results in four times the compliance voltage of a single output Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 1 Single phase operation 1 x 32 A high burden mode Refer to the output curves shown in the figures 6 1 through 6 5 in section 6 3 2 Current Outputs ...

Page 97: ... each group are phase opposite In addition the groups A and B are connected in parallel Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 2 Single phase operation 1 x 64 A high burden and high current mode Refer to the output curves shown in the figures 6 1 through 6 5 in section 6 3 2 Current Outputs on page 45 Load 1 N ...

Page 98: ...DC the third phase is used to support the N socket The currents 1 2 of groups A and B are connected in parallel Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 3 Single phase operation 1 x 128 A high current mode Refer to the output curves shown in the figures 6 1 through 6 5 in section 6 3 2 Current Outputs on page 45 Load 1 N ...

Page 99: ...L N 1 x 0 600 V 1 x 275 VA 200 600 V typical Figure 7 5 Single phase operation of the voltage system L L phase opposition Refer to the output curves shown in the figures 6 8 through 6 9 in section 6 3 3 Voltage Outputs on page 50 Note Never connect N or any other phase to GND PE This can cause life hazardous situations to persons and damage to property Load 1 N Load 1 N ...

Page 100: ...e available 7 3 1 2 x 64 A High Current Mode LL LN 2 x 0 64 A 90 ADC max 35 Vpeak 2 x 500 VA at 40 A Since the current over the N socket is limited to 32 Arms 45 ADC the third phase is used to support the N socket Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 6 Two phase operation 2 x 64 A high current mode Load 1 N1 2 N2 ...

Page 101: ...ode L L 2 x 0 32 A 45 ADC max 70 Vpeak 2 x 870 VA at 25 A The currents 1 and 2 of each group are phase opposite Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 7 Two phase operation 2 x 32 A high burden mode Load 1 N1 2 N2 ...

Page 102: ... separate phases it is possible to double the available compliance voltage However this configuration does not make sense if a common N connector is required Do not connect N1 N2 and N3 to each other Observe the safety instructions given in Section 7 1 on page 95 when using this operating mode Figure 7 8 Three phase operation Load 1 N1 2 N2 3 N3 ...

Page 103: ...6 alone cannot cover Each LL output socket LL out 1 6 and the optional LL out 7 12 can connect up to four external amplifiers with six independent channels The following configurations are possible 9 25 Arms 70 VA for differential relays in three galvanically separated current triples with CMC 356 CMA 156 6 250 V 75 VA for the synchronization in two galvanically separated voltage triples with CMC ...

Page 104: ...CMC 356 Reference Manual 104 ...

Page 105: ...le error messages 6 If you contact the OMICRON Support 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 Communication log file This file records any communication between the CMC 356 and the computer To send the log file to the OMICRON technical support 1 Close all other ap...

Page 106: ...e test set is blown Unplug the power cord from the power source Replace the fuse T 12 5 AH 250 V 5 x 20 mm Malfunction of internal test set components Contact OMICRON Support page 109 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 done at your own risk Ground wire connect...

Page 107: ... the OMICRON Open Source Download Area at www omicron at opensource Open this address in your Internet browser click the Download Software button and navigate to the CMC Embedded Image directory Look for the file containing your corresponding version in the file name for example Open Source CMC embedded Image 2 50 zip for version 2 50 In addition to some open source code packages the archive conta...

Page 108: ...Open Source License Information 108 ...

Page 109: ...ly you can find our Service Center or Sales Partner closest to you at www omicron at or www omicronusa com Customer Area Stay Informed www omicron at customer www omicronusa com customer The customer area on our website is an international knowledge exchange platform Download the latest software updates for all products and share your own experiences in our user forum Browse through the knowledge ...

Page 110: ...Support 110 ...

Page 111: ...6 binary outputs binary output relays 1 4 58 LL binary outputs 56 C calibration valid period of factory calibration 41 CAN CSA certified safety standards 69 CE certified safety standards 69 cleaning of CMC 356 68 connecting cables how to use safely 16 counter inputs 100 kHz LL 63 current max input current INPUT IDC 74 max input current INPUT VDC 74 D DC current measurement input 74 DC measurement ...

Page 112: ...cket voltage current outputs 32 H housing specs of CMC 356 68 humidity relative 68 I IEC certified safety standards 69 impedance max input impedance INPUT IDC 74 max input impedance INPUT VDC 74 increasing output power operating modes 95 inputs analog DC input UDC IDC 73 binary inputs 1 10 60 76 counter input 100 kHz LL 63 DC measurement 74 DC measurement ANALOG DC INPUT 74 ISO9001 certified safet...

Page 113: ...ation 53 power supply range of CMC 356 27 R reactive power calculation 84 relative humidity 68 resolution current outputs 45 LL out 1 6 55 phase output 43 voltage outputs 50 S safety certified safety standards 69 instructions 8 use of connecting cables 16 self test of hardware 20 SELV low level outputs 1 6 54 optional connector LL out 7 12 14 94 serial connection CURRENT A CURRENT B 96 shock and v...

Page 114: ...fety standards 69 USA Canada Federal regulations 70 USB on NET 1C board technical data 65 V vibration 68 voltage max input voltage INPUT VDC 74 voltage outputs technical data 50 W weak mains supply and output power relation 53 weight of CMC 356 68 ...

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