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Certification Introduction:
1.Test contact current
2.Electrical clearance and creepage distance
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 6.2.3.3&6.2.3.4
3.Power frequency withstand voltage test of solid insulation
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 6.2.3.5
4.Square insulation impedance detection
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 6.7.1&11.2.6(Accredited only for : power≤200 kW)
5.Square residual current detection test
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 6.7.2&11.2.7.1&:11.2.7.2&11.2.7.3(Accredited only for : power≤200 kW)
6.Input requirement
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.1 1(Accredited only for : power≤200 kW)
7.Output requirement
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.1.2(Accredited only for : power≤200 kW)
8.Efficiency requirement
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.2&11.4.3(Accredited only for : power≤200 kW)
9.Harmonics and waveform distortion
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.1.1 &11.4.4.1.1(Accredited only for : power≤200 kW)
10.Power factor
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.1.2 &11.4.4.1.2(Accredited only for : power≤200 kW)
11.Three phase current unbalance degree
NB/T 32004-2018(Accredited only for :power≤200 kW)
12.Dc component
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.1.4 &11.4.4.1.4(Accredited only for :power≤200 kW)
13.Active power control
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.2&11.4.4.3(Accredited only for :power≤200 kW)
14.Voltage/reactive power regulation
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.3 &11.4.4.2(Accredited only for :power≤200 kW)
15.Voltage adaptability
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.4&11.4.4.4(Accredited only for :power≤200 kW)
16.Low voltage crossing
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.5.1.1&11.4.4.5.1.1(Accredited only for :power≤200 kW)
17.High voltage crossing
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.5.1.2&11.4.4.2(Accredited only for :power≤200 kW)
18.Frequency adaptability
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.6 &11.4.4.6(Accredited only for :power≤200 kW)
19.Harmonic adaptability
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.7.1&11.4.4.7.1(Accredited only for :power≤200 kW)
20.Three-phase voltage unbalance adaptability
Technical specification for photovoltaic grid-connected inverters
NB/T 32004-2018 8.3.7.3&11.4.4.7.3(Accredited only for :power≤200 kW)
