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1. AC-DC-AC frequency conversion technology2. Digital wave synthesis, wave feed-back technology, low power distortion3. Controlled and tested by 16 bits MCU, which has high automation4. High speed 12 bits A/D sampling technology,exactly display Voltage5. Current, Power, Power factor, Frequency6. Zero output impedance, equivalent resistance ≤0.17. Insulation for power output to make test safely and steady8. Protection for over hot and thundering voltage and current9. Input by keyboard, big/small adjustment, fast parameter set-up10. Output frequency range:45-65Hz11. Output voltage range:AC 0-300V12. CHP-500 Output biggest current:0-150V is 4.2A,0-300V is 2.1A13. CHP-1000 Output biggest current:0150V is 8.4A,0-300V is 4.2A14. Total voltage distortion:≤0.6%15. Voltage stability:≤0.1%/30min16. Load adjust rate:≤0.1%.17. Frequency stability:≤0.05%/30min.