1、 Introduction

When 400Hz intermediate frequency AC (main power supply) and mains power are input at the same time, it will be automatically switched to mains power; when only 400Hz intermediate frequency AC (main power supply) is input, it will be connected according to 27V signal of control power supply

Or disconnect the 400Hz if AC input.

2、 Purpose

It is used in a battle command vehicle, assembled in the shell of outdoor unit of zkbd-35 air conditioning equipment, to supply power for the compressor, main control board and vehicle interior of air conditioning equipment.

  

There are three types of AC variable frequency power input power supply:

1. Three phase 220V (line voltage) / 400Hz (main power supply);

2. Single phase 220V / 50Hz (mains);

3. DC 27V (control power supply);

Main power input and output specifications

1. Input mode: three-phase three wire;

2. Rated input voltage: 220V (line voltage);

3. Input range: 198v-242v;

4. Rated input frequency: 400Hz;

5. Frequency variation range: 360-440HZ;

6. Input impulse current: there is no impulse during soft start, and the maximum current during start-up shall not exceed the rated input current;

7. Output form: single phase two wire;

8. Rated power: 3300W;

9. Rated output voltage: 220V, stable sine wave, no induction;

10. Allowable fluctuation range of output voltage: 198v-242v;

11. Rated output frequency: 50Hz;

12. Allowable fluctuation range of output frequency: 45-55Hz;

13. Dynamic performance: overshoot less than 10%, recovery time less than 500ms;

14. Total harmonic content (THD): ≤ 3%;

15. Peak coefficient: 1.414 ± 0.1;

16. Applicable load type: 2.6kw air conditioning compressor, 0.7kw rectifier load, 6 times / hour start and stop;

17. Output shock current 60A;

18. Input protection: phase loss protection, input overvoltage (260-264v) / undervoltage (176-170v) protection;

19. Output protection: output overvoltage (256-260) protection within 1 second, output overload (greater than 200% rated current) protection within 1 second;

20. Internal protection: internal overheating, inverter overcurrent protection