ZEMCH 2019 International Conference Proceedings April.2020 | Page 411
a further study will be needed because depending on the installed capacity of the actual BIPV the
current value of the human body may change.
(a) (b)
Figure 4. Wave form of accident current (a), FFT analysis result of accident current (b)
Table 2. Results of experiment depending on electric continuity
Case
Number Electric Continuity
[Ω] Body Resistance
[Ω] Accident Current
[mA] Touch Voltage
[V]
1
2
3 0.5
0.5
0.5 (a)
(b)
(c) 1.6
3
30.7 2.88
2.89
2.85
4
5
6 5
5
5 (a)
(b)
(c) 3.4
6.84
65.7 5.84
5.58
5.47
7
8
9 10
10
10 (a)
(b)
(c) 12.9
28.5
272.6 24
24.5
22.3
10
11
12 30
30
30 (a)
(b)
(c) 23.5
47.7
362 41
39
31
Figure 5. Result of experiment depending on body resistance
5. Conclusions
In the paper, empirical experiments using human models were carried out to derive the electrical
safety hazards in BIPV systems, where the human body is more susceptible to exposure to the risk of
electric shock than in general solar power facilities. The results of the experiment showed that DC and
AC combined accident currents were flowing through the human body because of non‐isolation
between the DC side and the AC side when ground fault occurred in BIPV system with non‐isolated
inverter. Therefore, in a BIPV system with non‐isolated inverter, AC accident currents should be
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