WorldwideDave
Solar Enthusiast
Alright just finished my test. I turned off the PV, ensured the MPPTs were in Snooze or off, waited 15 minutes, then fired up the inverter, and started the pool pump.
According to the victron temp sensor at the positive battery post, it was 18 degrees Celsius (64.4 F) at start of my test.
Test duration was 30 minutes before I turned everything off out of fear of fire.
I raised the variable speed pool pump to 3450 RPM right at the start.
According to the victron shunt, it was at 12.45V, 89.58 A, 1115 W during the test.
On the giandel 2000 W inverter, it has a display. The display read 12.1 VDC input, and 116 V AC, 60 Hz, 1040 W on the output side
This is very close to the 1115 W listed by the shunt.
Within 3 minutes temp sensor (TS) read 38 C (104.3 F).
The amps read 91.73 and watts read 1138, so very close to what it read 3 minutes prior except for Temp.
Within 3 more minutes - 6 total of start - it read 49 degrees C (120.2 degrees F).
Amps / volts / watts all read about the same.
Within 1 more minute - 7 total from start - it read 52 degrees C (125.6 degrees F).
Within 1 more minute - 8 from start - it read 56 degrees C (132.8 degrees F).
Within 1 more minute - 9 from start - it read 60 degrees C (140 degrees F).
Reminder: battery states charging range is allowed to be up to 122 degrees F and discharge is allowed to be at 140 degrees F, and high temp cutoff is 167 degrees F.
Got out my temp sensing gun and watched - the victron TS reads hotter than my temp sensor, so I put on my safety glasses and started monitoring with that for a while at the same time as the victron connect app over bluetooth.
Within 12 more minutes - 21 minutes from start - it read 82 degrees C (179.6 degrees F) at the TS, but with my temp gun I hit 164.4 F, and it started to smell a bit warm so measured temps everywhere I could and shut everything down.
The shunt reported 84 degrees C (183.2 degrees F).
The conductors on the positive side I'm using from the giandel were at 100 degrees F and warm to the touch.
The battery post I should not have touched, but did to ensure gun was working. It was hot - probably 150 F when I touched it. Left a mark on fingertip.
Conductor at the positive kill switch was 100 degrees F
Conductor connecting to shunt on the 'to battery' side of negative conductor was also 100 degrees F
Everything else like bus bars, fuse bar, and all other conductors were 80 degrees F or less. The connections at the inverter were even colder - closer to 75 degrees F.
If the victron temp sensor is supposed to warn or alert when at 120 degrees F, why didn't it?
If the victron temp sensor is accurately reporting 183.2 degrees F, why didn't the battery's BMS shut down at 167 degrees F?
Upload pictures in a minute - will also get VRM back online to get some reports.
According to the victron temp sensor at the positive battery post, it was 18 degrees Celsius (64.4 F) at start of my test.
Test duration was 30 minutes before I turned everything off out of fear of fire.
I raised the variable speed pool pump to 3450 RPM right at the start.
According to the victron shunt, it was at 12.45V, 89.58 A, 1115 W during the test.
On the giandel 2000 W inverter, it has a display. The display read 12.1 VDC input, and 116 V AC, 60 Hz, 1040 W on the output side
This is very close to the 1115 W listed by the shunt.
Within 3 minutes temp sensor (TS) read 38 C (104.3 F).
The amps read 91.73 and watts read 1138, so very close to what it read 3 minutes prior except for Temp.
Within 3 more minutes - 6 total of start - it read 49 degrees C (120.2 degrees F).
Amps / volts / watts all read about the same.
Within 1 more minute - 7 total from start - it read 52 degrees C (125.6 degrees F).
Within 1 more minute - 8 from start - it read 56 degrees C (132.8 degrees F).
Within 1 more minute - 9 from start - it read 60 degrees C (140 degrees F).
Reminder: battery states charging range is allowed to be up to 122 degrees F and discharge is allowed to be at 140 degrees F, and high temp cutoff is 167 degrees F.
Got out my temp sensing gun and watched - the victron TS reads hotter than my temp sensor, so I put on my safety glasses and started monitoring with that for a while at the same time as the victron connect app over bluetooth.
Within 12 more minutes - 21 minutes from start - it read 82 degrees C (179.6 degrees F) at the TS, but with my temp gun I hit 164.4 F, and it started to smell a bit warm so measured temps everywhere I could and shut everything down.
The shunt reported 84 degrees C (183.2 degrees F).
The conductors on the positive side I'm using from the giandel were at 100 degrees F and warm to the touch.
The battery post I should not have touched, but did to ensure gun was working. It was hot - probably 150 F when I touched it. Left a mark on fingertip.
Conductor at the positive kill switch was 100 degrees F
Conductor connecting to shunt on the 'to battery' side of negative conductor was also 100 degrees F
Everything else like bus bars, fuse bar, and all other conductors were 80 degrees F or less. The connections at the inverter were even colder - closer to 75 degrees F.
If the victron temp sensor is supposed to warn or alert when at 120 degrees F, why didn't it?
If the victron temp sensor is accurately reporting 183.2 degrees F, why didn't the battery's BMS shut down at 167 degrees F?
Upload pictures in a minute - will also get VRM back online to get some reports.