G.W. Mad Scientist
New Member
This evening after work I installed microair 368 soft start on my 3.5 ton York air conditioner. The battery Bank was recharged from the 26-hour initial trial run just the day before. I let the power room run the house for 26 hours it consumed about 100 amp hours to my surprise my 48 volt rectifier set with the current limit at 25 amps recharged it in only 4 hours.
The AC condensing unit before the microair install inrush current was 77 amps and the running amps were 14.3. I had tried to start the unit with the sw5548 before I installed the Microair soft start and it immediately shut it down.
I planned this system out crossing my fingers that this Microair 368 would actually work and the 368 is actually for 5 to 6 ton units, I called and talked to someone from Microair and told him I wanted the biggest one on a 3.5 ton. So I asked would that hurt anything? They said no it would give it some Reserve actually.
So I watched a quick video. I installed it in the dark literally with an LED drop light. I'm out here drilling a hole in the air conditioner case crimping terminals all out in the dark. The things we do to pursue our Hobby. LoL??
And to my amazement after the 5th start it had the starting amps down to 34 and the running amps down to 12 ( this unit is computerized and learns from previous starts and self-adjusts also the unit I have is Bluetooth) and actually it didn't get any better after the third start it already had it down to those numbers... Well I was getting a little giddy at that point!!!
I went in the house I fired up the inverter fired up the Transformer. Went in the utility room through the transfer from grid to power room. Fired the a/c unit up and went outside and of course it was on a 5-minute time delay that's built into the unit .....The fan starts first as well as the inside blower and when the unit timed down..... holy moly it started the a/c unit and didn't seem like it struggled at all !! I am totally freaking stoked I cannot believe It started 3.5 ton unit with so much in the house running... the hot water tank the refrigerator lots of lights. I'm totally amazed and happy beyond belief!!!?????
Here's a few pics and a couple screenshots, one of the Bluetooth from the microair which is super cool and one from the victron smart shunt showing the watt pull on the batteries . interesting thing the inverter only showed to be pulling 23 amps (only half of what this inverter is capable of) the t240 which previously when I was running all 110 loads the meter on it matched the inverter almost identically but strangely it was showing 34 amps I would think that the meter in the inverter was more accurate.
Anybody have any ideas on that? Why would the t240 be showing 12 more amps than the inverter itself? Meaning there was two 240 loads going, the hot water tank and the 3.5 ton AC and the meter was no longer matching the inverter. got to be some kind of weird phenomenon. I wonder if the magnetic fields in there from the transformer are somehow messing with the current sensor. Has it only does that when there's 240 being fed from the Transformer which is when the Transformer is mirroring itself creating a magnetic field. GW
The AC condensing unit before the microair install inrush current was 77 amps and the running amps were 14.3. I had tried to start the unit with the sw5548 before I installed the Microair soft start and it immediately shut it down.
I planned this system out crossing my fingers that this Microair 368 would actually work and the 368 is actually for 5 to 6 ton units, I called and talked to someone from Microair and told him I wanted the biggest one on a 3.5 ton. So I asked would that hurt anything? They said no it would give it some Reserve actually.
So I watched a quick video. I installed it in the dark literally with an LED drop light. I'm out here drilling a hole in the air conditioner case crimping terminals all out in the dark. The things we do to pursue our Hobby. LoL??
And to my amazement after the 5th start it had the starting amps down to 34 and the running amps down to 12 ( this unit is computerized and learns from previous starts and self-adjusts also the unit I have is Bluetooth) and actually it didn't get any better after the third start it already had it down to those numbers... Well I was getting a little giddy at that point!!!
I went in the house I fired up the inverter fired up the Transformer. Went in the utility room through the transfer from grid to power room. Fired the a/c unit up and went outside and of course it was on a 5-minute time delay that's built into the unit .....The fan starts first as well as the inside blower and when the unit timed down..... holy moly it started the a/c unit and didn't seem like it struggled at all !! I am totally freaking stoked I cannot believe It started 3.5 ton unit with so much in the house running... the hot water tank the refrigerator lots of lights. I'm totally amazed and happy beyond belief!!!?????
Here's a few pics and a couple screenshots, one of the Bluetooth from the microair which is super cool and one from the victron smart shunt showing the watt pull on the batteries . interesting thing the inverter only showed to be pulling 23 amps (only half of what this inverter is capable of) the t240 which previously when I was running all 110 loads the meter on it matched the inverter almost identically but strangely it was showing 34 amps I would think that the meter in the inverter was more accurate.
Anybody have any ideas on that? Why would the t240 be showing 12 more amps than the inverter itself? Meaning there was two 240 loads going, the hot water tank and the 3.5 ton AC and the meter was no longer matching the inverter. got to be some kind of weird phenomenon. I wonder if the magnetic fields in there from the transformer are somehow messing with the current sensor. Has it only does that when there's 240 being fed from the Transformer which is when the Transformer is mirroring itself creating a magnetic field. GW
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