carlyai Posted October 1, 2022 Share Posted October 1, 2022 Anyone installed 3 phase DIY? Link to comment Share on other sites More sharing options...
Popular Post Crossy Posted October 1, 2022 Popular Post Share Posted October 1, 2022 U mean 3-phase inverters etc? When it comes to 3-phase in Thailand my advice is always "treat it as 3 x single-phase installations" be it automatic voltage regulators or solar inverters. The single most common failure on the 3-phase network here is loss of one phase. A 3-phase AVR or GTI will trip out and you will get zero, if it's 3 x single-phase units two of them will continue to operate. 3 1 Link to comment Share on other sites More sharing options...
MrJ2U Posted October 1, 2022 Share Posted October 1, 2022 7 minutes ago, Crossy said: U mean 3-phase inverters etc? When it comes to 3-phase in Thailand my advice is always "treat it as 3 x single-phase installations" be it automatic voltage regulators or solar inverters. The single most common failure on the 3-phase network here is loss of one phase. A 3-phase AVR or GTI will trip out and you will get zero, if it's 3 x single-phase units two of them will continue to operate. Isn't 3* usually what PEA would install. I hope so. Link to comment Share on other sites More sharing options...
Crossy Posted October 1, 2022 Share Posted October 1, 2022 6 minutes ago, MrJ2U said: Isn't 3* usually what PEA would install. I hope so. Only if you ask for it. Thailand LV distribution is 3-phase 4-wire, a normal single-phase supply (which >90% of us have) comes from one phase plus the neutral. Of course, if you have a big place and can't get enough energy from a single-phase supply then request a 3-phase meter and supply. But once past your main breaker still treat it as if its 3 x single-phase supplies. @carlyai What are you actually trying to do? Link to comment Share on other sites More sharing options...
MrJ2U Posted October 1, 2022 Share Posted October 1, 2022 5 minutes ago, Crossy said: Only if you ask for it. Thailand LV distribution is 3-phase 4-wire, a normal single-phase supply (which >90% of us have) comes from one phase plus the neutral. Of course, if you have a big place and can't get enough energy from a single-phase supply then request a 3-phase meter and supply. But once past your main breaker still treat it as if its 3 x single-phase supplies. @carlyai What are you actually trying to do? I was curious. I had 3 phase installed. We've got a pool, 4 refrigerators, 8 air-conditioners. Numerous small appliances. I just assumed they would have put in 3 phase. I didn't realize there's different 3 phase types. They put in some new terminals/transformers in the village last week. I'll take a picture, perhaps I can message you and you might know what it is? It's great we haven't had the power go out since! 1 Link to comment Share on other sites More sharing options...
carlyai Posted October 1, 2022 Author Share Posted October 1, 2022 3 hours ago, Crossy said: Only if you ask for it. Thailand LV distribution is 3-phase 4-wire, a normal single-phase supply (which >90% of us have) comes from one phase plus the neutral. Of course, if you have a big place and can't get enough energy from a single-phase supply then request a 3-phase meter and supply. But once past your main breaker still treat it as if its 3 x single-phase supplies. @carlyai What are you actually trying to do? I thought I saw someone here who installed 3 phase solar. I thought it was red007 but think I'm mistaken. I understand your comments before about seperate in vetters for each phase. I hope to start the 3 phase solar project next year after I move my aquaponics. So mainly was looking for threads of 3 phase installations. Link to comment Share on other sites More sharing options...
Crossy Posted October 1, 2022 Share Posted October 1, 2022 3 minutes ago, carlyai said: I thought I saw someone here who installed 3 phase solar. I thought it was red007 but think I'm mistaken. I understand your comments before about seperate in vetters for each phase. I hope to start the 3 phase solar project next year after I move my aquaponics. So mainly was looking for threads of 3 phase installations. Got it. I don't recall a member installing 3-phase solar ???? 1 Link to comment Share on other sites More sharing options...
Popular Post 007 RED Posted October 1, 2022 Popular Post Share Posted October 1, 2022 1 hour ago, carlyai said: I thought I saw someone here who installed 3 phase solar. I thought it was red007 but think I'm mistaken. Sorry...... Not guilty.... I'm definitely on single phase supply. 2 1 Link to comment Share on other sites More sharing options...
a340bangla1 Posted October 13, 2022 Share Posted October 13, 2022 Hi there not DIY, but done by an installer: Huawei SUM2000-5KTL-M1 5.0Kw, 3 Phase inverter and totally 14 Jinko PV panels 470W, no battery as yet, cost was slightly below 200 KTHB all in. Running with 0 export most of the time. It is still slightly hazy but we are getting close to 5 kW at the moment. I would have to agree that 3 x 1-phase inverters might have been better due to 1 phase dropping out frequently. At the time of decision I did not think about this possibility but I guess it would have made the setup more expensive and complicated. 1 Link to comment Share on other sites More sharing options...
carlyai Posted October 13, 2022 Author Share Posted October 13, 2022 17 minutes ago, a340bangla1 said: Hi there not DIY, but done by an installer: Huawei SUM2000-5KTL-M1 5.0Kw, 3 Phase inverter and totally 14 Jinko PV panels 470W, no battery as yet, cost was slightly below 200 KTHB all in. Running with 0 export most of the time. It is still slightly hazy but we are getting close to 5 kW at the moment. I would have to agree that 3 x 1-phase inverters might have been better due to 1 phase dropping out frequently. At the time of decision I did not think about this possibility but I guess it would have made the setup more expensive and complicated. Hi, yes I'm looking at 3 hybrid inverters (with toroid transformer), cost about B35000 each. [My Thai Solar friend who was just visiting said 'make sure the inverters have toroid transformers']. I haven't Googled it yet. ???? Link to comment Share on other sites More sharing options...
a340bangla1 Posted October 13, 2022 Share Posted October 13, 2022 44 minutes ago, carlyai said: Hi, yes I'm looking at 3 hybrid inverters (with toroid transformer), cost about B35000 each. [My Thai Solar friend who was just visiting said 'make sure the inverters have toroid transformers']. I haven't Googled it yet. ???? Toroid ? Is that a dirty word ? ???? I saw them install circular transformers around the 3 phases which I assumed to be current transformers. The 3-phase Huawei inverter (5 kW) was about B30'000 Link to comment Share on other sites More sharing options...
007 RED Posted October 13, 2022 Share Posted October 13, 2022 2 hours ago, a340bangla1 said: Hi there not DIY, but done by an installer: Huawei SUM2000-5KTL-M1 5.0Kw, 3 Phase inverter and totally 14 Jinko PV panels 470W, no battery as yet, cost was slightly below 200 KTHB all in. Running with 0 export most of the time. It is still slightly hazy but we are getting close to 5 kW at the moment. I would have to agree that 3 x 1-phase inverters might have been better due to 1 phase dropping out frequently. At the time of decision I did not think about this possibility but I guess it would have made the setup more expensive and complicated. "no battery as yet" Just a heads-up...... I seem to remember another forum member who has had a Huawei inverter installed discovered after the fact that Huawei some how tie you into using only their batteries, which then turned out to be a very expensive option. Hope I'm wrong for your sake. 1 1 Link to comment Share on other sites More sharing options...
Popular Post MJCM Posted October 13, 2022 Popular Post Share Posted October 13, 2022 22 minutes ago, 007 RED said: "no battery as yet" Just a heads-up...... I seem to remember another forum member who has had a Huawei inverter installed discovered after the fact that Huawei some how tie you into using only their batteries, which then turned out to be a very expensive option. Hope I'm wrong for your sake. That is @Thaifish I believe 2 1 Link to comment Share on other sites More sharing options...
a340bangla1 Posted October 13, 2022 Share Posted October 13, 2022 1 hour ago, 007 RED said: "no battery as yet" Just a heads-up...... I seem to remember another forum member who has had a Huawei inverter installed discovered after the fact that Huawei some how tie you into using only their batteries, which then turned out to be a very expensive option. Hope I'm wrong for your sake. I have no plans for batteries at the moment but I might consult my installer to find out if there is such a restriction. Link to comment Share on other sites More sharing options...
Popular Post a340bangla1 Posted October 14, 2022 Popular Post Share Posted October 14, 2022 (edited) 19 hours ago, 007 RED said: "no battery as yet" Just a heads-up...... I seem to remember another forum member who has had a Huawei inverter installed discovered after the fact that Huawei some how tie you into using only their batteries, which then turned out to be a very expensive option. Hope I'm wrong for your sake. Seems you remember correctly. My supplier confirmed this morning that "at this moment" only Huawei batteries can be connected. He quoted a price of 115 KTHB for 5 kW. Though I have to admit the system looks very good in its modularity (see attached PDF). Normally I try to avoid Chinese products but in this case, all three suppliers that I inquired offered the Huawei solution. SUN2000-5-10KTL-M1 Datasheet——New.pdf. Edit: Further clarification on the price shows 115KTHB for the battery module, 35 KTHB for the controller, 8 KTHB Sundry - including VAT that comes to about 170 KTHB. Looks like I will have to think really hard about the necessity of batteries ☹️ Edited October 14, 2022 by a340bangla1 3 Link to comment Share on other sites More sharing options...
Thaifish Posted October 14, 2022 Share Posted October 14, 2022 1 hour ago, a340bangla1 said: My supplier confirmed this morning that "at this moment" only Huawei batteries can be connected That's my understanding also from the contractor who did my installation. 2 Link to comment Share on other sites More sharing options...
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