Key product certification - Grid-connected inverter Test:

Ø performance test

1) Performance test

2) Inspection of the quality of the body and structure

3) Conversion efficiency test

4) Harmonics test of grid-connected current

5) Power factor measurement test

6) Grid voltage response test

7) Frequency response test of power network

8) DC component test

Ø EMC performance test

1) Conducting emission test

2) Radiation emission test

3) Electrostatic discharge immunity test

4) Rf electromagnetic field radiation immunity test

5) Electric fast transient pulse group disturbance immunity test

6) Voltage fluctuation immunity test

7) Surge (impact) immunity test

8) Conducted disturbance immunity test of rf field induction

9) Power frequency electromagnetic field disturbance immunity test

10) Damped oscillation wave disturbance immunity test

Ø security and protection

1) Anti-island effect protection test

2) Low voltage crossing capability test

3) Short circuit protection test at output end

4) Anti-reverse discharge protection test

5) Polarity reverse connection protection test

6) DC overload protection test

7) DC overvoltage protection test

8) Communication function test

9) Test of automatic switching machine

10) Soft start test

11) Insulation resistance measurement test

12) Testing for insulation strength

13) Enclosure protection grade test

Ø reliability test

1) Low temperature start test

2) High temperature start-up and working test

3) Constant humidity and heat test

4) Active power control test

5) Voltage/reactive power regulation test

6) Temperature rise test

7) Square matrix insulation impedance test

8) Square matrix residual current detection test

9) Continuous working test

Certification of key Products - Test of bus-box:

Ø performance test

1) Serial overcurrent protection of photovoltaic group

2) communication

3) Display function

4) lightning protection

5) Enclosure protection grade

6) temperature rise

Ø environmental testing

1) Low temperature operation

2) High temperature work

3) Constant humidity and heat

4) vibration

5) impact

6) Low temperature operation

Ø dielectric performance test

1) Insulation resistance

2) Insulation strength

3) Electrical clearance and creepage distance

4) ground

5) Insulation resistance

6) Breaking ability and action characteristics

7) SPD action load test