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the right shunt trip?
#21
For me, its not about drawing power from battery (I agree with comments on this) but its about isolating the battery 100% from the system while I work on the system.   This is a personal choice.   When I put the shunt-trip to OFF, I like to *know* that 'all electrical flow' from the battery is disconnected so I can work on the system under that assumption - and Batrium is not needed at that point.    If the system goes off via a critical even - again I don't need Batrium to be live as I have the recorded metrics leading up to the shut-off that I can consult.

Having said the above, I was recently reminded that there is a 2nd power source besides the battery - e.g. PV power.   I was upgrading the wiring and disconnected the battery as the 1st step and was momentarily shocked to see Batrium (and other draws) continuing to run...   till I  (duh!!) remembered that PV power was active.   That's why there are breakers on PV input as well that must be turned off to work on the central control box.
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#22
But the shunt trip should trip PV Power to The battery.
But yes. Breakers for PV should have their own box. I also have separator breakers for each inverter and or Charger.

Makes it very easy to för maintenance on the part needed.

Also note that you have a separata breaker to batrium so you first trip Main breaker and the. The One for batrium. Thats also how batrium have it in their schematics. (After i told Them Smile )
The Ultimate DIY Solar and build place
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Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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#23
Glad I found this thread. I connected my Batrium behind the shunt trip and was happy to have everything connect and trip worked perfect. HOWEVER, as Batrium is booting, it's in default critical state while starting. This automatically triggers the relay to the shunt trip! So, I'm unable to connect the Batrium behind the shunt trip, as you've suggested, I should connect Batrium in front of the shunt trip to avoid this problem. I checked the power usage of the Batrium and appears to be only pulling 2 watts maximum, so even if my bank is really low(causing shunt to trip), it should keep the Batrium up for many days.
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#24
(03-19-2020, 04:54 AM)Tentious Wrote: ... I should connect Batrium in front of the shunt trip to avoid this problem.
Assuming "in front" means you power the batrium BMS from the battery side of the main breaker, then yes.
It's a good idea to have separate switch & fuse for the BMS + an inrush current limiter device there too.
So it's:
battery -ve terminal via 3A fuse to batrium 0V power terminal, and
battery +ve via DC breaker/switch, to another 3A fuse to batrium +ve power input terminal.
above battery terminals also connect to main breaker.
Running off solar, DIY & electronics fan :-)
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#25
I followed a @LithiumSolar youtube and hooked up a 48v->24v step-down (on down side of shut-trip - e.g. no power if shunt trips) that powers Batrium and shunt-trip Batrium relay1 circuit.  I also have the Menu -> Critrical Control Logic -> Delay Restart set ON w/30secs  AND  Menu -> Expansion Relay 1  at "Critical Fault".   
But I confess I may have had the USB port connected to local computer which also provides power if 24v is not there.

My questions  - doesn't the "Delay Restart" take care of the problem of the shunt-trip being tripped 'to soon' during start up?      Are you using an an expansion board relay w/Critical Fault setting on it? or some other method.
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#26
(03-19-2020, 02:38 PM)OffGridInTheCity Wrote: I followed a @LithiumSolar youtube and hooked up a 48v->24v step-down (on down side of shut-trip - e.g. no power if shunt trips) that powers Batrium and shunt-trip Batrium relay1 circuit.  I also have the Menu -> Critrical Control Logic -> Delay Restart set ON w/30secs  AND  Menu -> Expansion Relay 1  at "Critical Fault".   
But I confess I may have had the USB port connected to local computer which also provides power if 24v is not there.

My questions  - doesn't the "Delay Restart" take care of the problem of the shunt-trip being tripped 'to soon' during start up?      Are you using an an expansion board relay w/Critical Fault setting on it? or some other method.

Both options are set, same as you. The relay is activated/closed immediately when the Watchmon receives power and only energized for 1-2 seconds before relay is back to off/open position. See attached screenshots.
Critical Control Logic(Note that I'm using LiFePo Cells):

Expansion Board Settings:
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#27
(03-19-2020, 05:49 PM)Tentious Wrote:
(03-19-2020, 02:38 PM)OffGridInTheCity Wrote: I followed a @LithiumSolar youtube and hooked up a 48v->24v step-down (on down side of shut-trip - e.g. no power if shunt trips) that powers Batrium and shunt-trip Batrium relay1 circuit.  I also have the Menu -> Critrical Control Logic -> Delay Restart set ON w/30secs  AND  Menu -> Expansion Relay 1  at "Critical Fault".   
But I confess I may have had the USB port connected to local computer which also provides power if 24v is not there.

My questions  - doesn't the "Delay Restart" take care of the problem of the shunt-trip being tripped 'to soon' during start up?      Are you using an an expansion board relay w/Critical Fault setting on it? or some other method.

Both options are set, same as you. The relay is activated/closed immediately when the Watchmon receives power and only energized for 1-2 seconds before relay is back to off/open position. See attached screenshots.
Critical Control Logic(Note that I'm using LiFePo Cells):

Expansion Board Settings:
OK, next question might be - what exactly was the 'critical fault' that closed the Batrium relay for the 1-2seconds - e.g. maybe lo/hi battery voltage setting?  or something obscure? I'm not that clear on the full range of what can cause a critical fault... obviously lo/hi cell voltage (what I used for my test) but maybe there are non-obvious settings?.

Just to add to the record in case something jumps out, here's my settings....      FYI - I just noticed that Control Logic -> Discharging has "Supply Lo Cutout" in yellow ...  (I forgot to change it when going with 48v->24v stepdown) and obviously its not causing my shunt-trip to go off.

Hardware -> Expansion Page


Control Logic -> Critical


Control Logic -> Charging


Control Logic -> Discharging


Control Logic -> Thermal
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#28
The smoke in the machine room in for detecting fire and recalling the elevator. When the machine room smoke activates a red hat light on the elevator car lights up indicating a fire in the machine room to the fire department. The heat in the machine room is for detecting water flow if a sprinkler head is located in the room. When the heat trips, the elevator shunts killing power, don’t want to be standing in water with the power on!!!
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#29
Hello Gentlemen,

finally I got my ABB S5 this week from USA.
Unfortunately it's a 125V DC version for the shunt trip.
So to connect it to the Batrium I will need an additional Powersupply for 125V DC and a relais .

But there is another Question that now popped up in my mind:
Do I need to connect positive and negative from the Batteriy to the S5,
or would it be possible to only interupt the positive connection with it?
Background:
So it would be possible to have ma. 3 seperate Battery banks through this switch, all connected to the same negative pole.


Regards

cadric
1. Grid-Tie System 09.2017 16,5kWp:  55 x 300Wp BenQ, SMA Tripower 15000-TL30 (18-east/17-south/20-south)
2. Offgrid System 09.2019 7,5 kWp: 25 x 300Wp Solarworld (5x( 3S + 2S )), 2x PIP-5048MS, Batrium WM4, 1st Battery Bank: 840 cells in 14S60P with 80Ah cap in use, 2nd Batterybank with 14S60P in build.
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#30
Its ok to Connect One Side only.

Connecting 3 banks on the 3ph is not recommeended. You should Read the manual. All depends on voltage and disconnect current
The Ultimate DIY Solar and build place
YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 100kWh LiFePo4 | 20kWh 14s 18650 |  66*260W Poly | ABB S3 and S5 Trip breakers
Upcoming: 14S 18650~30kWh
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