Ulrich Klapper Application Note: CPC 100 Calibration Guide
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Calibration Guide for CPC 100
Contents
1 Introduction .................................................................................................................................3 Warning ......................................................................................................................................................3
2 Requirements for Calibration Equipment................................................................................4 2.1 Recommended equipment or equivalent .............................................................................................4
2.1.1 Signal generator .............................................................................................................................4 2.1.2 Voltage Measurement ....................................................................................................................4 2.1.3 Current Transformer .......................................................................................................................5 2.1.4 Power Resistors .............................................................................................................................5 2.1.5 AC Shunts.......................................................................................................................................6 2.1.6 DC Shunt ........................................................................................................................................6
3 Preparation and Fundamentals.................................................................................................7 3.1 Fundamentals.......................................................................................................................................7 3.2 Preparation ...........................................................................................................................................7 3.3 Used Abbreviations ..............................................................................................................................7 3.4 Conversion Table .................................................................................................................................7 3.5 CPC QuickCard Controls .....................................................................................................................8
4 Calibration Check Procedure ....................................................................................................9 4.1 High Voltage Output Magnitude ...........................................................................................................9 4.2 High Voltage Output Current ..............................................................................................................10 4.3 High Current Output 800A AC - Magnitude........................................................................................11 4.4 High Current Output 400A DC............................................................................................................12 4.5 Burden Outputs ..................................................................................................................................13
4.5.1 Current Output 6A AC ..................................................................................................................13 4.5.2 Current Output 3A AC ..................................................................................................................13 4.5.3 Current Output 130V AC ..............................................................................................................14 4.5.4 Current Output 6A DC ..................................................................................................................14
4.6 Voltage Inputs.....................................................................................................................................15 4.6.1 Input V1 AC ..................................................................................................................................15 4.6.2 Input V2 AC ..................................................................................................................................16 4.6.3 Input V DC ....................................................................................................................................16
4.7 Current Input.......................................................................................................................................17 4.7.1 Input I AC/DC - Mode I DC...........................................................................................................17 4.7.2 Input I AC/DC - Mode I AC ...........................................................................................................18
4.8 Binary Input ........................................................................................................................................18 4.8.1 Dry Contact Check .......................................................................................................................18 4.8.2 Wet Contact Check.......................................................................................................................18
5 Report CPC100 accuracy check .............................................................................................19 5.0 Device Identification ...........................................................................................................................19 5.1 High Voltage Output Magnitude .........................................................................................................19
5.1.1 2kV AC Output – Range 500V AC ...............................................................................................19 5.1.2 2kV AC Output – Range 1kV AC..................................................................................................20 5.1.3 2kV AC Output – Range 2kV AC..................................................................................................20
5.2 High Voltage Output Current ..............................................................................................................20 5.3 High Current Output 800A AC - Magnitude........................................................................................21 5.4 High Current Outputs 400A DC..........................................................................................................21 5.5 Burden Output Modes ........................................................................................................................22
Ulrich Klapper Application Note: CPC 100 Calibration Guide
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5.5.1 6A AC Output ...............................................................................................................................22 5.5.2 3A AC Output ...............................................................................................................................22 5.5.3 130V AC Output ...........................................................................................................................22 5.5.4 6A DC Output ...............................................................................................................................22
5.6 Voltage Inputs.....................................................................................................................................23 5.6.1 300V V1 AC..................................................................................................................................23 5.6.2 3V V2 AC......................................................................................................................................23 5.6.3 10V V DC......................................................................................................................................24
5.7 Current Input.......................................................................................................................................24 5.7.1 I AC/DC Input – Range 10A DC ...................................................................................................24 5.7.2 I AC/DC Input – Range 10A AC ...................................................................................................25
5.8 Binary Input Check .............................................................................................................................25 5.8.1 Dry Contact Check .......................................................................................................................25 5.8.2 Wet Contact Check.......................................................................................................................25
6 Specifications............................................................................................................................27
7 History........................................................................................................................................27
Ulrich Klapper Application Note: CPC 100 Calibration Guide
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1 Introduction
This is a guide for the calibration and verification of a CPC 100 unit. It helps the CPC 100 user to verify, whether the unit is still within the tolerance limits as specified in the "Technical Data" section of the "CPC 100 Reference Manual".
To perform calibrations measurement equipment that has a higher accuracy than the unit that is calibrated is needed. Equipment used for factory calibration of all OMICRON units is traceable to national standards (DKD, ÖKD). To ensure an unbroken chain of traceability, all necessary measuring instruments are calibrated and compared to national standards at the DKD (Deutscher Kalibrierdienst) or ÖKD (Österreichischer Kalibrierdienst) laboratories at regular intervals. If a recalibration is done, traceability of the equipment used has to be assured by the user.
The user therefore must take the accuracy of his measuring instruments, his own reference standards and those of the CPC into account. The tables in the appendix can be used to enter the tolerances of the equipment and the results.
If results of the measurements show that the CPC unit is out of the specified tolerance, the unit must be sent to OMICRON electronics for adjustment and recalibration. It is not possible for the user to perform adjustments of a CPC unit. When sending a unit to OMICRON, please attach a copy of the calibration results and send as much background information as possible. Calibration of the CPC is guaranteed for one year after the date of calibration.
The phase calibration will not be elaborated on. The principle of measurement for the common phase measurement devices (i.e. measurement of the zero crossings) is not suitable to measure the phase angle of the CPC (due to high phase resolution as well as widely differing signals; e.g. 2000 V and 800 A). Based on the concept and the digital signal generation of the CPC, it can be assumed that the phase accuracy will also be within the guaranteed specified values if all the other calibration checks prove to be in order.
Warning Only qualified, service trained personnel who are aware of the hazards involved should
remove or connect wiring to the CPC.
Measuring high voltages is always hazardous. All CPC terminals (both front and side) must be considered as hazardous whenever inputs in excess of 42V are connected to any terminal.
Also read the chapter “Safety Instructions” of the CPC100 reference manual.
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2 Requirements for Calibration Equipment
The measuring instruments generally need to be of a very high accuracy. Equipment with an accuracy of at least two times better than the guaranteed values of the CPC should be used.
It is adviced to have a valid certificate of calibration for all test equipment listed below before performing any verification with these instruments.
2.1 Recommended equipment or equivalent
2.1.1 Signal generator
Device Type Manufacturer Homepage
Signal generator CMC 256 OMICRON electronics GmbH, Austria
http://www.omicron.at
Any other device can be used as long as the following values can be achieved:
12.5 A AC / DC range, uncertainty < 500 ppm
1.25 A AC / DC range, uncertainty < 500 ppm
400 V AC / DC, uncertainty < 500 ppm
10 V AC / DC, uncertainty < 700 ppm
The full signal quality of the CMC256 is not needed, the tolerances only need to be valid for a short time stability over 5 minutes.
To use the LowLevel-Outputs of the CMC a CMLIB A - Box is mandatory.
2.1.2 Voltage Measurement
Device Type Manufacturer Homepage
Digital Multimeter 3458A* Agilent Technologies,
USA
http://www.agilent.com
Any other device can be used as long as the following values can be achieved:
Vmax = 1000 Vpeak
DC Voltage accuracy; ACAL DCV Done
DC voltage error < 500 ppm @ 10 V (3458A, < 50 ppm) < 500 ppm @ 1 V (3458A, < 50 ppm) < 450 ppm @ 200 mV (3458A, < 50 ppm) < 750 ppm @ 100 mV (3458A, < 100 ppm) < 250 ppm @ 40 mV (3458A, < 200 ppm) < 1000 ppm @ 10 mV (3458A, < 200 ppm)
DC current error < 50000 ppm @ 1 A
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AC Voltage accuracy using sync mode; SETACV SYNC; LFILTER ON; ACAL ACV Done
AC voltage error < 600 ppm @ 700 V (3458A, < 400 ppm) < 500 ppm @ 500 V (3458A, < 400 ppm) < 950 ppm @ 350 V (3458A, < 400 ppm) < 500 ppm @ 300 V (3458A, < 400 ppm) < 750 ppm @ 250 V (3458A, < 500 ppm) < 500 ppm @ 50 V (3458A, < 300 ppm) < 500 ppm @ 30 V (3458A, < 400 ppm) < 500 ppm @ 3 V (3458A, < 200 ppm) < 750 ppm @ 300 mV (3458A, < 200 ppm) < 450 ppm @ 200 mV (3458A, < 300 ppm) < 750 ppm @ 160 mV (3458A, < 200 ppm) < 1000 ppm @ 80 mV (3458A, < 200 ppm) < 2000 ppm @ 30 mV (3458A, < 200 ppm)
AC current error < 50000 ppm @ 1 A
2.1.3 Current Transformer
Device Type Manufacturer Homepage
Current Transformer
AC current
KSS 104; 1000:1; 1VA;
±0,02% @ 800A @ 0.5VA
Measurement points: 800A, 400A, 200A
RITZ Messwandler,
Germany
http://www.ritz-international.de
Any other device can be used as long as the following values can be achieved:
Imax = 1000A; ratio 1000:1; 50Hz or 60Hz; 1VA
Uncertainty < 200 ppm @ 800 A < 200 ppm @ 400 A
2.1.4 Power Resistors
Device Type Manufacturer Homepage
Power Resistors 220, HS100 (11x)
2k2, HS10
ARCOL UK Ltd, Cornwall England
http://www.arcol.co.uk/
Any other device can be used as long as the following values can be achieved:
Imax = 50mA, R = 2k2Ω / 10W, uncertainty < 5%, TK < 25 ppm/°C
Imax = 500mA, R = 220Ω / 100W (1x), uncertainty < 5%, TK < 100 ppm/°C
Imax = 5A, R = 22Ω / 1000W (10x220Ω/100W), uncertainty < 5%, TK < 100 ppm/°C
Note: Usage of resistors with low temperature drift is recommended to ensure stable readings, although the uncertainty of the power resistors is not of great influence to the measurement. They are only used to control the output current of the CPC high voltage output.
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2.1.5 AC Shunts
Device Type Manufacturer Homepage
AC Shunts 1682C (0.02E / 50A)
1659B (0.2E / 7A) Tinsely Precision Instruments, England
http://www.tinsley.co.uk
Any other device can be used as long as the following values can be achieved:
1682, Imax = 50A, R = 20 mΩ, non-inductive, uncertainty < 50 ppm
1659, Imax = 7A, R = 200 mΩ, non-inductive, uncertainty < 50 ppm
If the current is measured over the voltage drop of a shunt, please note that a high quality AC shunt must be used.
2.1.6 DC Shunt
Device Type Manufacturer Homepage
DC Shunt 500ADC 50mV 0.1% L 500-50/01
Thermovolt AB, Sweden http://www.thermovolt.se
Any other device can be used as long as the following values can be achieved:
Imax = 400ADC, R = 0,1mΩ, uncertainty < 1000ppm (uncalibrated)
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3 Preparation and Fundamentals
3.1 Fundamentals
Disconnect any cables that may be plugged and are not relevant for the desired test.
3.2 Preparation
Turn the CPC on. Warm-up time > 25 min
Power supply: 230V/50Hz or 110V/60Hz
Ambient temperature: 73°F ± 10°F / 23°C ± 5°C
3.3 Used Abbreviations
• Nom: nominal value of the CPC unit
• Res: Used Resistor for a specific test
• Freq: frequency when the test is performed
• MeasCPC: measured value on the CPC display
• MeasRef: measured value on the reference instrument
• MeasErr: calculated error from MeasCPC and MeasRef
• TolCPC: Specified CPC tolerance expressed in ppm
• TolShunt: Tolerance of a used shunt expressed in ppm
• TolRef: Specified CPC tolerance expressed in ppm
• TolSum: Sum of tolerances of CPC and reference equipment in ppm
• Ok?: Assessment if the calculated error is within the specified limit
3.4 Conversion Table
[%] [ppm] 0,01 100 0,1 1000 1 10000
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3.5 CPC QuickCard Controls
A summary of the QuickCard Controls used in the calibration check procedure. For more detailed information see CPC manual.
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4 Calibration Check Procedure
4.1 High Voltage Output Magnitude
The voltage is measured at the CPC terminals directly.
The 2kVAC of the CPC has the possibility of an internal measurement which is also defined in the CPC specifications. It can be calibrated using a direct connection to the digital multimeter.
400A DC 800A AC
2kV AC
EXT.BOOSTER
2kV AC
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/250V
3458A
TerminalsFront/Rear
GuardOpen/To Lo
Vmax700V AC
Warning: Check the DMM’s specifications for the maximum voltage that may be applied to its terminals to avoid internal damage.
Procedure:
• Start up Quick
• Select output range 500V AC first, then 1000V AC and finally 2000V AC and set the output value as specified in table in the appendix chapter 5.1.
• Select Measurement: Vout
• Activate the output by pressing the green button
• Read the result and write it to the column MeasCPC
• Read the result on the external voltmeter and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltmeter in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and write it to the column TolSum
TolRefTolCPCTolSum +=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.2 High Voltage Output Current
The internal current measurement of the high voltage output is tested by outputting a specific voltage and measuring the current flowing over a defined resistance.
Warning: There are live threatening voltages during this test! At the shunts this is very dangerous, so please take any precaution that neither the tester nor any passerby could come into danger. Press the Emergency button when working on the wiring. Obey national security standards too!
Procedure:
• Start up Quick
• Select output range 500V AC first, and set the output value to about 100V. Select Measurements: Vout and IOut
• Activate the output by pressing the green button
• Adjust the output voltage to set the current as specified in table in the appendix chapter 5.2.
• Read the result of IOut and write it to the column MeasCPC
• Read the result on the external voltage measurement over the shunt and write it to the column MeasRef.
• Calculate the current from the voltage measured and write it to the column CalcRef.
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the used Shunt into the column TolShunt
• Write the tolerance of the external voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the Shunt and write it to the column TolSum
TolRefTolShuntTolCPCTolSum ++=
• Assess the result. Calibration is ok if
TolSumMeasErr <
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/ 250V
3458A
Terminals
Front / Rear
Guard
Open/ To Lo
400A DC 800A AC
2kV AC
EX T.BOOSTER
R load
AC Shunt0.2E/7A
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4.3 High Current Output 800A AC - Magnitude
To test the current outputs a calibrated shunt of 200 mΩ is required. Please note that the shunt must be designed for AC signals (we recommend bandwidth > 100 kHz). By measuring the voltage drop across the shunt the current can be measured indirectly.
For the 800AAC output and the 1000A/2000A-Booster currents it is suggested to use a high precision current transformer or transducer.
400A DC 800A AC
2kV AC
EXT.BOOSTER
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/250V
3458A
TerminalsFront/Rear
GuardOpen/To LoAC Shunt
0.2E/7A
Transformer1:1000/50Hz
Procedure:
• Start up Quick
• Select output range 800A AC first, and set the output value as specified in table in the appendix chapter 5.3.
• Select Measurement: IOut
• Activate the output by pressing the green button
• Read the result of IOut and write it to the column MeasCPC
• Read the result on the external voltage measurement over the shunt and write it to the column MeasRef.
• Calculate the current from the voltage measured and write it to the column CalcRef.
• If known add the error of the current transformer at that particular amplitude and enter it to the field NomErrTransf. If not known enter 0 ppm.
• Calculate the Error with
sfNomErrTranppm0000001*MeasRef
MeasRefMeasCPCMeasErr −−=
• Write the tolerance of the transformer to the column TolTrans and the tolerance of the shunt to the column TolShunt
• Write the tolerance of the external voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the shunt and write it to the column TolSum
TolShuntTolTransTolRefTolCPCTolSum +++=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.4 High Current Output 400A DC
To test the current outputs a power DC shunt of 0,1 mΩ is required. By measuring the voltage drop across the shunt the current can be measured indirectly.
400A DC 800A AC
2kV AC
EXT.BOOSTER
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/250V
3458A
TerminalsFront/Rear
GuardOpen/To Lo
DC Shunt0.0001E/400A
Procedure:
• Start up Quick
• Select Output Mode 400A DC first, and set the magnitude as specified in table in the appendix chapter 5.4.
• Select Measurement: IOut
• Activate the output by pressing the green button
• Read the result of IOut and write it to the column MeasCPC
• Read the result on the external voltage measurement over the shunt and write it to the column MeasRef.
• Calculate the current from the voltage measured and write it to the column CalcRef.
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Add the tolerance of the used Shunt and write the result to the column TolShunt
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the Shunt and write it to the column TolSum
TolRefTolShuntTolCPCTolSum ++=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.5 Burden Outputs
4.5.1 Current Output 6A AC
This output has no internal measurement. Its output magnitude depends on the load and its tolerance is quite big. In typical applications it gains its accuracy from being measured by the according measurement input. However it is possible to check the output by using the CPC internal measurement input, which is by far accurate enough.
Connect the 6A/130V AC output to the I AC/DC input.
Procedure:
• Start up Quick
• Select Output Mode 6A AC first, and set the magnitude as specified in table in the appendix chapter 5.5.1.
• Select Measurement: I AC
• Activate the output by pressing the green button
• Read the result and write it to the column MeasCPC
• Calculate the Error with
%001*MeasRef
INomMeasCPCMeasErr
−=
• Assess the result. Calibration is ok if
TolSumMeasErr <
4.5.2 Current Output 3A AC
This output has no internal measurement. Its output magnitude depends on the load and its tolerance is quite big. In typical applications it gains its accuracy from being measured by the according measurement input. However it is possible to check the output by using the CPC internal measurement input, which is by far accurate enough.
Connect the 6A/130V AC output to the I AC/DC input.
Procedure:
• Start up Quick
• Select Output Mode 3A AC first, and set the magnitude as specified in table in the appendix chapter 5.5.2.
• Select Measurement: I AC
• Activate the output by pressing the green button
• Read the result and write it to the column MeasCPC
• Calculate the Error with
%001*MeasRef
INomMeasCPCMeasErr
−=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.5.3 Current Output 130V AC
This output has no internal measurement. Its output magnitude depends on the load and its tolerance is quite big. In typical applications it gains its accuracy from being measured by the according measurement input. However it is possible to check the output by using the CPC internal measurement input, which is by far accurate enough.
Connect the 6A/130V AC output to the V1 AC input.
Procedure:
• Start up Quick
• Select Output Mode 130V AC first, and set the magnitude as specified in table in the appendix chapter 5.5.3.
• Select Measurement: V1 AC
• Activate the output by pressing the green button
• Read the result and write it to the column MeasCPC
• Calculate the Error with
%001*MeasRef
INomMeasCPCMeasErr
−=
• Assess the result. Calibration is ok if
TolSumMeasErr <
4.5.4 Current Output 6A DC
This output has no internal measurement. Its output magnitude depends on the load and its tolerance is quite big. In typical applications it gains its accuracy from being measured by the according measurement input. However it is possible to check the output by using the CPC internal measurement input, which is by far accurate enough.
Connect the 6A DC output to the I AC/DC input.
Procedure:
• Start up Quick
• Select Output Mode 6A DC first, and set the magnitude as specified in table in the appendix chapter 5.5.4.
• Select Measurement: I DC
• Activate the output by pressing the green button
• Read the result and write it to the column MeasCPC
• Calculate the Error with
%001*MeasRef
INomMeasCPCMeasErr
−=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.6 Voltage Inputs
Measure the voltage at the CPC terminals directly. Compare the measurement of the measuring instrument against the measurement on the CPC display. The example below shows the circuit for the calibration of the V1AC input. It is suggested to twist the wiring between the digital multi-meter and the device under test. As an example an OMICRON CMC256-6 is used as a high precision signal generator. The voltage output has a voltage range of +/- 300V.
OMICRON
V2 AC / 3V
VDC / 10V
V1 AC / 300V
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/250V
3458A
TerminalsFront/Rear
GuardOpen/To Lo
VOLTAGE OUTPUT
CMC256-6
CURRENT OUTPUT B
CURRENT OUTPUT A
10V → LL1 + 5VLL2 –5V
4.6.1 Input V1 AC
Procedure:
• Start up Quick
• Connect an external generator and an external voltmeter in parallel and set the output value as specified in table in the appendix chapter 5.6.1.
• If using the CMC 256 as generator, use the outputs at the rear of the unit for the signals < 5V, which can be connected via a CMLIB A - Box.
• Select Measurement: V1 AC
• Read the result of V1 AC and write it to the column MeasCPC
• Read the result on the external measurement and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the Shunt and write it to the column TolSum
TolRefTolCPCTolSum +=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.6.2 Input V2 AC
Procedure:
• Start up Quick
• Connect an external generator and an external voltmeter in parallel and set the magnitude as specified in table in the appendix chapter 5.6.2.
• If using the CMC 256 as generator, use the outputs at the rear of the unit for these small signals, which can be connected via a CMLIB A - Box.
• Select Measurement: V2 AC
• Read the result of V2 AC and write it to the column MeasCPC
• Read the result on the external measurement and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the Shunt and write it to the column TolSum
TolRefTolCPCTolSum +=
• Assess the result. Calibration is ok if
TolSumMeasErr <
4.6.3 Input V DC
Procedure:
• Start up Quick
• Connect an external generator and an external voltmeter in parallel and set the magnitude as specified in table in the appendix chapter 5.6.3.
• If using the CMC 256 as generator, use the outputs at the rear of the unit for these small signals, which can be connected via a CMLIB A - Box. Generate 10V by using two Phases and no GND connection, e.g. LL1 +5V and LL2 –5V.
• Select Measurement: V DC
• Read the result of V DC and write it to the column MeasCPC
• Read the result on the external measurement and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference voltmeter and the Shunt and write it to the column TolSum
TolRefTolCPCTolSum +=
• Assess the result. Calibration is ok if
TolSumMeasErr <
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4.7 Current Input
Use a high quality DC current source for direct comparison of the current source and the reading on the CPC display.
OMICRON
I ACDC / 10A
VOLTAGE OUTPUT
CMC256-6
CURRENT OUTPUT B
CURRENT OUTPUT A
Hi Hi
Lo Lo
Guard I
InputSence
1000Vpk
1A/250V
3458A
TerminalsFront/Rear
GuardOpen/To Lo
AC Shunt0.02E/50A
Additional a high accuracy AC-shunt may be implemented. The voltage drop of the shunt is measured and therefore the current can be calculated with regard to all tolerance limits. In the example above an Omicron CMC256-6 is used as the signal generator.
4.7.1 Input I AC/DC - Mode I DC
Procedure:
• Start up Quick
• Connect an external generator and an external ampmeter in series and set the magnitude as specified in table in the appendix chapter 5.7.1.
• Select Measurement: I DC
• Read the result of I DC and write it to the column MeasCPC
• Read the result on the external measurement and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference ampmeter and the Shunt and write it to the column TolSum
TolRefTolShuntTolCPCTolSum ++=
• Assess the result. Calibration is ok if
TolSumMeasErr <
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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4.7.2 Input I AC/DC - Mode I AC
Procedure:
• Start up Quick
• Connect an external generator and an external ampmeter in series and set the magnitude as specified in table in the appendix chapter 5.7.2.
• Select Measurement: I AC
• Read the result of I AC and write it to the column MeasCPC
• Read the result on the external measurement and write it to the column MeasRef
• Calculate the Error with
ppm0000001*MeasRef
MeasRefMeasCPCMeasErr
−=
• Write the tolerance of the voltage measurement in this mode at this level to the column TolRef
• Add the tolerances of the CPC and the reference ampmeter and the Shunt and write it to the column TolSum
TolRefTolShuntTolCPCTolSum ++=
• Assess the result. Calibration is ok if
TolSumMeasErr <
4.8 Binary Input
The function of the binary input should be checked.
4.8.1 Dry Contact Check
Procedure:
• Start up Quick
• Check if the Binary Input does show an open contact symbol:
• Short circuit the binary input
• Check if the Binary Input does show an closed contact symbol:
4.8.2 Wet Contact Check
• Start up Quick
• Apply a negative input voltage of "-14V" to the binary input.
• Check if the Binary Input does show an open contact symbol:
• Apply a negative input voltage of "-3V" to the binary input.
• Check if the Binary Input does show an closed contact symbol:
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5 Report CPC100 accuracy check
The following pages can be used as a calibration report form.
5.0 Device Identification
Type
Serial Number
Date
Performed by
Department
Next calibration
5.1 High Voltage Output Magnitude
5.1.1 2kV AC Output – Range 500V AC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VAC] [Hz] [VAC] [VAC] [ppm] [ppm] [ppm] [ppm] Ok?
250 55 3000
500 55 2000
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5.1.2 2kV AC Output – Range 1kV AC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VAC] [Hz] [VAC] [VAC] [ppm] [ppm] [ppm] [ppm] Ok?
350 55 3900
700 55 2500
5.1.3 2kV AC Output – Range 2kV AC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VAC] [Hz] [VAC] [VAC] [ppm] [ppm] [ppm] [ppm] Ok?
350 55 6800
700 55 3900
5.2 High Voltage Output Current
2kV AC Output – Range 500V AC
Settings Measurements Tolerances
Nom Rload Freq MeasCPC MeasRef CalcRef MeasErr TolCPC TolShunt TolRef TolSum
[IAC] [] [Hz] [IAC] [UAC] [IAC] [ppm] [ppm] [ppm] [ppm] [ppm] Ok?
0.05 2200 55 5000
0.50 220 55 5000
5.00 22 55 2000
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5.3 High Current Output 800A AC - Magnitude
800A AC Output
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef CalcRef NomErr Trans
MeasErr TolCPC TolRef TolTrans TolShunt TolSum
[IAC] [Hz] [IAC] [UAC] [IAC] [ppm] [ppm] [ppm] [ppm] [ppm] [ppm] [ppm] Ok?
400 55 6000
800 55 4000
5.4 High Current Outputs 400A DC
400A DC Output
Settings Measurements Tolerances
Nom Res Freq Meas CPC Meas Ref Calc Ref Meas Err TolCPC TolShunt TolRef TolSum Ok?
[IDC] [m] [Hz] [IDC] [UDC] [IDC] [ppm] [ppm] [ppm] [ppm] [ppm]
200 0,1 - 6000
400 0,1 - 5000
Ulrich Klapper
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5.5 Burden Output Modes
5.5.1 6A AC Output
Settings Measurements Tolerances
Nom Freq Meas CPC Meas Err TolCPC TolMeas TolSum Ok?
[IAC] [Hz] [IAC] [%] [%] [%] [%]
6 55 2 0.3 2.3
3 55 2 0.4 2.4
5.5.2 3A AC Output
Settings Measurements Tolerances
Nom Freq Meas CPC Meas Err TolCPC TolMeas TolSum Ok?
[IAC] [Hz] [IAC] [%] [%] [%] [%]
3 55 2 0.4 2.4
1 55 2 0.2 2.2
5.5.3 130V AC Output
Settings Measurements Tolerances
Nom Freq Meas CPC Meas Err TolCPC TolMeas TolSum Ok?
[VAC] [Hz] [VAC] [%] [%] [%] [%]
150 55 2 0.3 2.3
75 55 2 0.5 2.5
5.5.4 6A DC Output
Settings Measurements Tolerances
Nom Freq Meas CPC Meas Err TolCPC TolMeas TolSum Ok?
[IDC] [Hz] [IDC] [%] [%] [%] [%]
6 - 5 0.4 5.4
3 - 5 0.7 5.7
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5.6 Voltage Inputs
5.6.1 300V V1 AC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VAC] [Hz] [VAC] [VAC] [ppm] [ppm] [ppm] [ppm] Ok?
0,3 55 4000
3 55 3000
30 55 2000
300 55 2000
5.6.2 3V V2 AC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VAC] [Hz] [VAC] [VAC] [ppm] [ppm] [ppm] [ppm] Ok?
0,03 55 7000
0,3 55 3000
3 55 2000
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
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5.6.3 10V V DC
Settings Measurements Tolerances
Nom Freq MeasCPC MeasRef MeasErr TolCPC TolRef TolSum
[VDC] [Hz] [VDC] [VDC] [ppm] [ppm] [ppm] [ppm] Ok?
0,01 - 4000
0,1 - 3000
1 - 2000
10 - 2000
5.7 Current Input
5.7.1 I AC/DC Input – Range 10A DC
Settings Measurements Tolerances
Nom Res Freq MeasCPC MeasRef CalcRef MeasErr TolCPC TolShunt TolRef TolSum
[IDC] [m] [Hz] [IDC] [UDC] [IDC] [ppm] [ppm] [ppm] [ppm] [ppm] Ok?
1 200 - 2000
10 20 - 2000
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
electronics GmbH 2007-04-23 25/27
5.7.2 I AC/DC Input – Range 10A AC
Settings Measurements Tolerances
Nom Res Freq MeasCPC MeasRef MeasErr TolCPC TolShunt TolRef TolSum
[IAC] [m] [Hz] [IAC] [IAC] [ppm] [ppm] [ppm] [ppm] [ppm] Ok?
1 200 55 2000
10 20 55 2000
5.8 Binary Input Check
5.8.1 Dry Contact Check
Settings Expected Result
Contact Ok?
open
closed
5.8.2 Wet Contact Check
Settings Expected Result
Nom [VDC] Ok?
-14
-3
Ulrich Klapper Application Note: CPC 100 Calibration Guide
W:\ULRKLA00\PROJECTS\CPC 100\OFIL\DTP\CalibrationGuide CPC100.doc
electronics GmbH 2007-04-23 27/27
6 Specifications Level guaranteed Phase gar.
Input Range Reading Full Scale @100% 10A AC/DC 10A AC 1000 1000 2000 0.20 °
1A AC 1000 1000 2000 0.30 ° 10A DC 500 1500 2000 - 1A DC 500 1500 2000 -
V1 AC 300V 1000 1000 2000 0.20 ° 30V 1000 1000 2000 0.20 ° 3V 2000 1000 3000 0.20 ° 300mV 3000 1000 4000 0.20 °
V2 AC 3V 500 1500 2000 0.20 ° 300mV 1500 1500 3000 0.20 ° 30mV 2000 5000 7000 0.30 °
10V DC 10V 500 1500 2000 - 1V 500 1500 2000 - 100mV 1000 2000 3000 - 10mV 1000 3000 4000 - Level guaranteed Phase gar.
Output Range Reading Full Scale @100% 800A AC - 2000 2000 4000 0.20 ° 400A DC - 4000 1000 5000 - 2kV AC 2000V 1000 1000 2000 0.20 °
1000V 1000 1000 2000 0.30 ° 500V 1000 1000 2000 0.40 ° 5A 4000 1000 5000 0.20 ° 500mA 1000 1000 2000 0.20 ° Level guaranteed Phase gar.
Booster Range Reading Full Scale @100% 2000A - 2500 2500 5000 0.50 ° 1000A - 2500 2500 5000 0.50 °
7 History Rev Author Description Tested by Released 1.00 Ulrich Ilg First released version - - 1.01 Ulrich Klapper Correction of misleading typo in chapter 4.4 - - 1.02 Ulrich Klapper Correction of misleading typo, now 0,1m for 400A DC - - 1.03 Ulrich Klapper Correction of Ritz homepage - - 1.04 Ulrich Klapper Chapter 2.1.4 updated, the power resistor grouping is
described properly now - 2005-08-17
1.05 Ulrich Klapper Order information of equipment needed updated - 2005-09-05 1.06 Ulrich Klapper Burden Output Calibration chapter added - 2006-01-31 1.07 Ulrich Klapper Calibration period entered - 2007-04-23
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