Product Details

NP702 Relay Protection Tester

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Product Parameters:

Current Output	AC	Phase current output (RMS) Three-phase parallel current output (RMS) Long-term allowable working value of phase current (RMS) Maximum output power of phase current Maximum output power when three-phase parallel current is at maximum Allowable working time when three-phase parallel current is at maximum Frequency range (fundamental) Harmonic order	0-40A 0-120A10A/ per phase450VA900VA10s20-1000Hz1-20 times
	DC	Phase current output maximum output load voltage	0-±10A 20V
Voltage Output	AC	Phase voltage output (RMS) Line voltage output (RMS) Phase voltage / Line voltage output power Frequency range (fundamental) Harmonic order	0-120V0-240V80VA / 100VA20-1000Hz1-20 times
	DC	Phase voltage output amplitude Line voltage output amplitude Phase voltage / Line voltage output power	0-±160V0-±320V70VA / 140VA
Switching Value Input		7 pairs of dry contacts 1-20mA, 24V potential contact input “0”: 0 - +6V; “1”: +11v - +250V
Switching Value Output		8 channels of dry contacts Contact DC: 220V/0.2A; AC: 220V/0.5A
Time Measurement		Measurement range 0.1ms - 9999s
Power Supply Voltage		Allowable range AC 220V±10%, 50/60Hz
Ambient Temperature		Allowable range -10℃ - +50℃

Output and Measurement Accuracy:

Accuracy within rated range	Current	AC phase current <0.5%AC high current terminal output <0.5%DC current <0.5%
	Voltage	AC voltage <0.5%DC voltage <0.5%
	Others	Frequency accuracy (at 50Hz) <0.01HzPhase accuracy <0.1°Harmonic distortion <0.5%Time measurement accuracy <0. 1ms

Product Features:

1. Intelligent host: The host adopts a high-speed high-performance digital signal processor, with fast operation speed, wide transmission bandwidth, and software uses double-precision algorithm to generate high-precision waveforms of each phase arbitrarily. Due to the integrated structure, all parts are closely connected, data transmission distance is short, and the structure is compact.

2. Standalone operation: The YTC702 microcomputer relay protection tester is operated through a large-screen LCD display with a convenient and flexible rotating mouse, with full Chinese display, and can complete most on-site test and verification work.  

3. Connected to computer for operation: Through the full Chinese operation software on the Windows platform, various large-scale, complex, and more automated verification work can be performed, various protection settings can be easily tested and scanned, test data can be stored in real-time, vector diagrams can be displayed, fault waveforms can be drawn, and reports can be printed online.

4. Large-screen LCD display: The YTC702 microcomputer relay protection tester adopts a large-screen high-resolution graphic LCD display. All operation processes are set on the display screen, and the operation interface and test results are displayed in Chinese, with clear and intuitive display.

5. "Foolproof" operation: This microcomputer relay protection tester adopts an advanced rotating mouse, greatly simplifying the structure of the operation part, making operation simple, fast, and easy to master.  

7. New high-fidelity power amplifier: The output stage adopts a new type of high-power modular high-fidelity power amplifier component, which can be used for both current output and voltage output, with large output power, good accuracy, and high reliability.

8. Direct current and voltage output: Phase voltage and phase current adopt DC-type power amplifier output mode, which can directly output AC voltage, AC current, DC voltage, and DC current, and can change angle and frequency, and can superimpose 1-20 harmonics.

9. Self-protection: The YTC702 microcomputer relay protection tester adopts a reasonably designed heat dissipation structure, and has reliable and complete multiple protection measures and power soft start, as well as certain fault self-diagnosis and blocking functions.  

10. Independent dedicated DC power supply output: The device is equipped with a dedicated adjustable DC power supply output of 110V and 220V.  

11. Rich contacts: This microcomputer relay protection tester has 7 contact inputs and 2 dry contact outputs. The input contacts are compatible with dry contacts and 0-250V potential contacts, and can be intelligently and automatically identified.  

12. Integrated single-unit structure: This microcomputer relay protection tester works with AC 220V power supply. It is small in size, light in weight, easy to carry, and convenient for mobile testing.  

13. High cost performance: The YTC702 microcomputer relay protection tester is a cross-professional joint design product, integrating advanced scientific and technological achievements of multiple disciplines. It has the performance of a large-scale tester and the price of a small-scale tester, with high cost performance.



Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.