Portable Electronic (Digital) CT/VT Calibrator HEWD-2A

Digital Output Error Test (Ratio Error and Phase Error).

Compatible with protocol IEC61850-9-1/2/2LE and IEC60044-FT3.

Analog Output Error Test (Ratio Error and Phase Error).

Analog of small signal output.

EMC compliance with standard IEC60044-8.

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Features

Technical Index

1. Digital output error test of electronic (digital) CT/VT.
1) Ratio and phase error test.
2) Compatible with the protocol IEC61850-9-1,IEC61850-9-2,IEC61850-9-2LE and IEC60044-FT3.
3) Compatible with various optical fiber interfaces.
4) Holography analysis of message of IEC61850-9-1/IEC61850-9-2.
5) Recording error data of test point and data inquiry/store/print by software.
2. Analog output error test of electronic (digital) CT/VT and conventional CT/VT.
1) Ratio and phase error test of digital CT/VT.
2) Ratio and phase error test of conventional CT/VT by converting into voltage signal through standard converter.
3. Up to test 0.2S class digital CT/VT.
4. Analog of small signal output.
5. Harmonic wave analysis of input signal of digital CT/VT under test, generation of spectrum curve, record of content of each time harmonic (up to 50times harmonic), and calculation of harmonic distortion.
6. RMS value parameters analysis (amplitude, phase, frequency and etc) of input standard signal.
7. Real-time displaying output waveform, standard signal waveform, polarity, sync status and percentage value under test point of CT/VT under test.
8. Polarity and time-delay test of digital CT/VT by using inbuilt PPS (pulse per second) and B code to output sync signal
9. Operation by tablet through APP software (optional).
10. EMC compliance with standard IEC60044-8.
11. PC software.
1) Friendly HMI and clear interfaces.
2) Automatically save test data and generate test report.

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Primary rated voltage measure	up to 500KV
Primary rated current measure	5-5000A, customization available
Standard signal input
Voltage input	0-120%Un, Un=100V、100/√3V. Customization available
Current input	0-120%In, In=1A or 5A. Customization available
Analog input signal	0-10V (peak value)
Small signal (sine wave) output	0-4V (RMS value)
Accuracy class
Ratio error	<0.05% (1-120% rated value)
Phase error	<2´(1-120% rated value)
Absolute delay	<1µS (waveform distortion less than 1%)
Delay jitter	<0.5µS
ST optical fiber interface (one group)
Optical fiber Transmitting Power	>-6dBm
Optical Receiving sensitivity	-38dBm
Sync signal
Optical PPS sync input & output	4Nos
Optical IRIG-B(DC) sync input & output	4Nos
Sync output time accuracy	better than 100ns
Input supply	AC220V±10%, 50/60HZ, power consumption less than 20W
Working condition	temperature 0℃~+40℃/Humidity ≤85%
Size & Weight	360400160mm/7.5kgs