The CP11B Calibrator and Tester is used for calibration and testing a wide range of measuring instruments used in power engineering and enables testing:
- AC voltmeters, AC ammeters, frequency meters, phase angle meters, power factor meters, wattmeters, VARmeters, VAmeters, clamps meters and much more,
- power quality analysers, recorders and flickermetersIEC 61000-4-30 class A for EN 50160 compatibility or individual requirements of user.
The CP11B enables automatic testing with calculating of errors and standard deviation:
- electricity meters EN 50470 with accuracy relative to internal reference including:
measure the basic error and influence of frequency, voltage, self-heating, distortion,…, checking the starting current and no-load run,
- electrical measuring transducers for converting a.c. electrical quantitiesEN 60688 (voltage, current, active power, reactive power, frequency, phase angle, power factor),
- current instrument transformers EN 60044 including measure the accuracy of current and phase angle as well as burden measurement,
- current clamps with AC & DC voltage and current output including measure the accuracy of current and phase angle,
- protective relays EN 60255 including checking of tripping time and tripping level characteristics of ANSI#21 Distance relays, ANSI#27/59 Under/over voltage relays, ANSI#32 Directional power relays, ANSI#50/51 Time overcurrent relays, ANSI#81 Frequency relays and more protective relays.
Intuitive front panel design with large Touchscreen display and ergonomic keyboard for ease of use enables:
- setting the value of voltage U, current I, phase angle j or power factor cos/sin, frequency f and powers P, Q, S (by changing I, U or j) with using numeric keyboard or ô keys to decrease or increase setting with different speed,
- selecting of voltage and current constant range and autorange mode,
- switching ON/OFF waveform distortion of voltage and current,
- switching Operate/Standby state of calibrator's output.
Power Quality function enables generation of nonsinusoidal voltage and current waveforms with harmonics, interharmonics and subharmonics as well as simulation of voltage, current, phase shift and frequency variations as a function of time (dips, interruptions, swells, flicker, fluctuations and ramp signals).
PQ functions meet all accuracy requirements of power quality testing to the EN 61000-4 series of standards.
Harmonics
Harmonics are voltages and currents with a frequency, that is an integral multiple of the fundamental frequency. Harmonic testing is defined in EN 61000-4-7 and EN 61000-4-13.
The CP11B can generate multi-harmonic distortion with independent superposition of harmonic components of current and voltage, with levels 0…100% and phase angle 0…360° of the first harmonic.
Interharmonics
Interharmonics are voltages with a frequency, that is a non-integral multiple of the fundamental frequency. For example, in 50Hz supply system, 150Hz is a harmonic (the third) but 175Hz is an interharmonic. Interharmonic testing is defined in EN 61000-4-7 and EN 61000-4-13.
The CP11B can generate interharmonics at a user-definable frequency up to 3200Hz, amplitude and phase angle.
Dips, Interruptions, Swells and Shocs
Dips are a temporary reduction of the voltage below nominal (Interruptions below 1% nominal) and Swells are a temporary increase of the voltage above nominal up to 200% nominal for a time from 10ms up to several minutes. Shocs (Inrush current) are a temporary increase of the current above nominal when first turned on of an electrical device. Dips, Interruptions and Swells testing are defined in EN 61000-4-11 and EN 61000-4-34.
The CP11B can generate a user-definable fast and slow changes of voltage and current independently.
Flicker
Flicker is a specific measurement, which sets out to measure the human sensitivity of a flickering light caused by supply voltage fluctuation around of a nominal value. Flickermeter testing is defined in EN 61000-4-15.
The CP11B generates voltage changes for performance testing and displays the results in Pst / Plt severity including combined frequency/voltage changes, harmonic/interharmonic distortion and phase jumps.
Test System function for testing of electricity meters, measurement of industrial transducers, current clamps, current transformers and protection relays in fully automatic way under sinusoidal and nonsinusoidal conditions, for example the CP11B can be used to type test from 0.1% to 2% energy meters acc. to EN 50470.
Current output provides currents in full current range from 1mA up to 120A through compact banana sockets without needed to manual switch current terminals during test.
