YouTube transcript (t8jIe-K7nTY) — Transcript

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1. 0:00Now, if you are giving a hybrid system
2. 0:03to the customer, remember we talked
3. 0:04about hybrid system, right? So, imagine
4. 0:07you're giving a hybrid system. On the
5. 0:0812-V category, you can get a hybrid
6. 0:10system 1.5 kVA 12-V and 2 kVA 12-V.
7. 0:15That's for hybrid. For 24-V, you can get
8. 0:194.2 kVA 24-V.
9. 0:23And you can also get 3.5 kVA 24-V. You
10. 0:27can also get 3 kVA 24-V. That's for
11. 0:31hybrid system. Then, for 48-V
12. 0:35for inverter selection, you can get 5.5
13. 0:38kVA 48-V,
14. 0:406.2 kVA 48-V, 10 kVA 48-V and as high as
15. 0:45that. So, 48-V is the max voltage in
16. 0:49terms of inverter selection. So, you
17. 0:52see. So, that is it for inverter. Now,
18. 0:54for compatibility,
19. 0:56you can't use a 12-V battery on a 24-V
20. 1:01inverter. Take note.
21. 1:03Your battery bank pairing must match
22. 1:06with your inverter voltage. Let's say,
23. 1:09for instance, you're using tubular
24. 1:11batteries.
25. 1:12All tubular batteries are rated in 12-V.
26. 1:16Same goes to lead-acid batteries. As you
27. 1:18see a lead-acid battery 150 amp, 200
28. 1:21amp, 100 amp, they are all rated in
29. 1:2412-12 V. For you to get 24-V, you have
30. 1:28to series these two batteries together.
31. 1:31Seriesing occurs when the positive
32. 1:33terminal of one of the battery is being
33. 1:35linked to the negative terminal to all
34. 1:38the other of that same kind of battery.
35. 1:40Now, you have increased the voltage of
36. 1:42both of the batteries to 24-V, but the
37. 1:44amp of that battery remains the same.
38. 1:47So, for you to be able to use maybe a
39. 1:50tubular battery for a 48-V system, you
40. 1:53have to pair it in order to get 48-V.
41. 1:56Now, imagine each of these batteries are
42. 1:5812 V, right? For you to get 48 V, what
43. 2:01do you do? You series them by four. 12,
44. 2:0424, 36, and 48. So, you see you have
45. 2:07gotten 48 V,
46. 2:09but 200 amps. So, that is it for
47. 2:12compatibility. You can't use a 24 V
48. 2:15battery on a 48 V inverter. That would
49. 2:18not work. It must be of the same
50. 2:21voltage. The amperage can range, but the
51. 2:24voltage must be the same. So, that is it
52. 2:28for inverter compatibility, selection,
53. 2:31and also panel
54. 2:33types and efficiency, and also wattages.
55. 2:36Going over to wire,
56. 2:38cable sizing and materials.
57. 2:41Wires are very, very essential when you
58. 2:43are taking your installation.
59. 2:46You can't use a poor size of wire on a
60. 2:50large system and you don't cause havoc.
61. 2:53Voltages produced and wattages produced
62. 2:56from solar panels are so high that if
63. 2:59not professional enough, you might end
64. 3:02up getting a house burnt up.
65. 3:05Now, imagine you are installing a as
66. 3:07high as a 48 V system with a battery
67. 3:10bank of maybe 30 kW,
68. 3:12an inverter of maybe 20 kVA.
69. 3:14And you are now using a 2.5 mm cable,
70. 3:18solar cable, you end up getting that
71. 3:20house burnt. Solar cable ranges in mm
72. 3:26per meter squared. We have 2.5 mm,
73. 3:31we have 4 mm, we have 6 mm, we have 10
74. 3:36mm, we have 16 mm, and also as high as
75. 3:4032 mm. Now, each of these cable sizes
76. 3:45ranges from the kind of system and the
77. 3:47type of system that it is used installed
78. 3:49for.
79. 3:50You can't use a 2.5 mm cable for a 48
80. 3:54volt system. So, if for example, you are
81. 3:56doing a simple system that doesn't
82. 3:58require high voltage and high wattages,
83. 4:01you can use 2.5 mm cable to us 4 mm
84. 4:05cable. Now, if the system steps up
85. 4:08to maybe centralized voltage is high,
86. 4:11but not too high, you can use 6 mm
87. 4:14cable. But, anything that involves high
88. 4:16voltage connection, you are making use
89. 4:19of 10 mm to 16 mm and above. That will
90. 4:23require smooth connection. And also,
91. 4:27that will make us to avoid overheating
92. 4:30of wire cable because when you use wrong
93. 4:32wire cable, you find out that it
94. 4:34overheats, it melts, it kind of even
95. 4:36destroy the inverter that it is being
96. 4:38connected to. That's because the cable
97. 4:40is not compatible with the system it is
98. 4:43used installed for. So, that is it for
99. 4:45cable size. Now, for materials,
100. 4:47materials that are used in this
101. 4:49installation includes trunking pipes,
102. 4:51trunking hose,
103. 4:53nails,
104. 4:54clips. All of these things are very,
105. 4:56very necessary to make your installation
106. 4:59neat.
107. 5:00Each of these thing, inverter has its
108. 5:02hook that is being placed on the wall
109. 5:05where it is being hanged upon.
110. 5:06Kilowatt battery, even if it's the
111. 5:08hangable type, it has its hooks. Those
112. 5:11are those components that come with it.
113. 5:13Trunking pipe, it is used for all the
114. 5:15wires that is being used for the
115. 5:16connection to pass through it so as to
116. 5:19avoid wires being shown on the wall. We
117. 5:22have also
118. 5:24uh
119. 5:26um wooden boards where your changeover
120. 5:29system is being screwed to.
121. 5:32So, all of these are part of the
122. 5:33materials that are used in designing
123. 5:37that component. Talking about the
124. 5:39requirement for grid connection in
125. 5:42Nigeria, we are simply going to look at
126. 5:45why connecting your grid power to your
127. 5:47hybrid system, whenever you're
128. 5:49installing a hybrid system that consists
129. 5:51of using both utility power and solar
130. 5:55power to power to charge your system,
131. 5:57there are some required requirements you
132. 5:59have to take note of while using grid
133. 6:02connection. And we're going to look at
134. 6:03it briefly in this video. Now,
135. 6:06grid connection require involves you
136. 6:09using your your PHCN power or your
137. 6:13prepaid utility
138. 6:15power.
139. 6:16These are things you need to take note
140. 6:18of
141. 6:18while connecting your grid power to your
142. 6:21system.
143. 6:22Especially when you're using a prepaid
144. 6:24meter system, you should note
145. 6:26that it is going to increase the bill,
146. 6:30the electricity bill on the customer's
147. 6:33end. Because, you know, as usual, a
148. 6:35prepaid meter is being regulated in how
149. 6:38much kilowatt you consume.
150. 6:41That will determine how much you pay.
151. 6:44So, for you to be charging your system,
152. 6:48it's going to consume more because it
153. 6:50needs high voltage and high wattage
154. 6:54for charge to continue. So, it's very
155. 6:56advisable that while you're making use
156. 6:59of grid to charge your system, you
157. 7:01should avoid using a prepaid meter
158. 7:03system unless you have the bill to cover
159. 7:05for.
160. 7:06Now, for those using normal PHCN, you
161. 7:09can connect it, but you should note that
162. 7:12your voltage should be as high as 240 to
163. 7:15230 V.
164. 7:17That will enable the system to charge
165. 7:19smoothly. Low voltage power cannot
166. 7:22charge your system using grid.
167. 7:25That is it for grid connection
168. 7:27requirement. Understanding
169. 7:30solar PV cost analysis.
170. 7:33Now, in this video, we're going to
171. 7:35simply understand how you can save up in
172. 7:38purchasing a solar system.
173. 7:41Now, you should take note that your
174. 7:44major target is capacity, not quantity.
175. 7:51If you are getting
176. 7:53expensive materials when it comes to
177. 7:56purchasing a solar system,
178. 7:58expensive materials like
179. 8:00um solar panels grade A long G panels
180. 8:04that are very much expensive than the
181. 8:06rest solar panels. You should understand
182. 8:09that if you want to be going for the
183. 8:11most expensive, you're going to spend
184. 8:13more for just a little
185. 8:16um capacity that you needed.
186. 8:19They We even have
187. 8:21batteries of 3.8 kW, but it is 12 V.
188. 8:26So, you see. So, imagine the customer
189. 8:29say, "Okay, please, I just want to power
190. 8:32um deep freezer. I just want to power
191. 8:34lighting, just something simple, deep
192. 8:36freezer, lighting, and fan."
193. 8:38You can now just end up and you start
194. 8:41analyzing and analyzing and you say,
195. 8:42"Okay, okay,
196. 8:43uh let me go and give you
197. 8:45uh you bring 4 million naira and I will
198. 8:47give you deep freezer and fan and
199. 8:48light."
200. 8:49You know?
201. 8:50It It will It will chase the customer
202. 8:52away.
203. 8:53Rather, you look for the most possible
204. 8:55system
205. 8:57that of low cost but of high quality and
206. 9:00get for the customer. You can say,
207. 9:02"Okay, since you're just using a deep
208. 9:04freezer and you're using lighting,
209. 9:06instead of us to go for a 24 V or 48 V
210. 9:09system that's going to cost you, let us
211. 9:11maintain a 12 V system, but we increase
212. 9:14the capacity."
213. 9:15That's what makes you a professional.
214. 9:17So, now, instead of you going for 24 V
215. 9:20system, 2.5 kW, or 24 V system, 5 kW,
216. 9:24you can get a 3.5 kW 12 V system.
217. 9:29You cannot get a 12 V hybrid inverter.
218. 9:33And now, you can just make use of two or
219. 9:35three of long G panels.
220. 9:38You see? Instead of now spending about
221. 9:412.5 million naira for just a 24 volt
222. 9:43system, you are now end up spending 1.3
223. 9:47million naira to get the same result.
224. 9:51The voltage just varies because it is in
225. 9:5412 volt. But in terms of capacity, the
226. 9:57battery is 3.5 kilowatts. That's
227. 10:00massive. The inverter is 2 KVA. That's
228. 10:03also massive for the load. Because the
229. 10:05load size is not much. The panels are
230. 10:07just three. We are making use of 6650.
231. 10:11That's because we want high voltage and
232. 10:13high wattage. Remember when I was
233. 10:15talking about selecting of panels in
234. 10:17terms of installing the best size of
235. 10:20panel you should you can get, especially
236. 10:22to get the most of charging at the most
237. 10:24of sunlight. So you see, you are now
238. 10:26saving cost. So you don't have to
239. 10:29understand these things so that whenever
240. 10:31a customer comes across your way in
241. 10:33terms of getting a system, you can make
242. 10:35you can do it in such a way that the
243. 10:37customer will understand that okay, we
244. 10:38are trying to still get a good durable
245. 10:41and high system, but we are saving up
246. 10:43cost. We are trying to make the payment
247. 10:45flexible for them. And not them seeing
248. 10:48getting a solar system as of them
249. 10:51digging gold.
250. 10:53You understand?