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Source for Relays for BMS8T

Steve_S said:
Partial SSR UPDATE:
I have the Two New 500A SSR's (Solid State Relays) coming, shipping out tomorrow as they have just completed internal factory tests.
The price is 78 usd/pcs, 2 pcs are 156usd.
The heat sink is 4.8usd/pcs, 2pcs are 9.6usd.
Shipping cost are 38usd, ship by UPS.
Total: 203.6usd.

LISTED AS OF THIS MORNING !
500A Heavy Terminal: (US $78.00)
https://www.alibaba.com/product-det....41413.12.397f7242O1c4py&fullFirstScreen=true

1000A Heavy Terminal: (US $128.00)

This product is no longer available.

This product is no longer available.
www.alibaba.com www.alibaba.com

These are the LeiChuangTec Ones by the way, NOT the new ones being done by Chargery.

View attachment 10972View attachment 10973View attachment 10974View attachment 10975
Click to expand...
Wow those look beefy!! Tempted to get these but I think 500A might be overkill for my setup? Specially for my charge relay. I will be running the charge relay on a separate line to the battery. Charge will be 75amp or at least hope that it is as such.
 
SECOND RELAY UPDATE NON-SSR:

The Energy Savers from Dongya
Dongya DH200H https://www.dc-contactors.com/dh150-300-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200h
* This company does not retail directly, you need to go through an authorised vendor, I am dealing directly with the manufacturer for this. I found these through an EV Supplier who has had very good luck with them apparently, normally the company itself sells minimum batches of 100 pieces. The EV company is below, they sell them for $80 USD
Electric Car Parts Company relay listing

The update from the Manufacturer. They do NOT have a presence on eBay, Amazon etc.
Typically they have an MOQ (Minimum Order Quantity) of 30 pcs and they are EXW meaning your on the hook for duties, taxes and all that hubbub.
The DH200H Relays are $23.00 USD each plus S&H & Duties, taxes etc.
 
Steve_S said:
SECOND RELAY UPDATE NON-SSR:

The Energy Savers from Dongya
Dongya DH200H https://www.dc-contactors.com/dh150-300-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200h
* This company does not retail directly, you need to go through an authorised vendor, I am dealing directly with the manufacturer for this. I found these through an EV Supplier who has had very good luck with them apparently, normally the company itself sells minimum batches of 100 pieces. The EV company is below, they sell them for $80 USD
Electric Car Parts Company relay listing

The update from the Manufacturer. They do NOT have a presence on eBay, Amazon etc.
Typically they have an MOQ (Minimum Order Quantity) of 30 pcs and they are EXW meaning your on the hook for duties, taxes and all that hubbub.
The DH200H Relays are $23.00 USD each plus S&H & Duties, taxes etc.
Click to expand...
The current tarif in the US is 27.5% on the cost of the product.
 
My 8-pack with a BMS8T is part of a much larger bank so it never sees more than 50 amps charge/discharge. For now I'm getting away with these cheapys. They don't get hot. They drop 9 mV at 24 V 50 amps and the coil current is 80 mA. If your charge/discharge amps are higher or you have an RV or where the installation is more than a few minutes work, etc. then it's not the relay to choose. But if you're a cheap bastard like me...

 
Steve_S said:
Partial SSR UPDATE:
I have the Two New 500A SSR's (Solid State Relays) coming, shipping out tomorrow as they have just completed internal factory tests.
The price is 78 usd/pcs, 2 pcs are 156usd.
The heat sink is 4.8usd/pcs, 2pcs are 9.6usd.
Shipping cost are 38usd, ship by UPS.
Total: 203.6usd.

LISTED AS OF THIS MORNING !
500A Heavy Terminal: (US $78.00)
https://www.alibaba.com/product-det....41413.12.397f7242O1c4py&fullFirstScreen=true

1000A Heavy Terminal: (US $128.00)

This product is no longer available.

This product is no longer available.
www.alibaba.com www.alibaba.com

These are the LeiChuangTec Ones by the way, NOT the new ones being done by Chargery.

View attachment 10972View attachment 10973View attachment 10974View attachment 10975
Click to expand...
are the 300A & 120A on the same site OK too?
they look similar
 
mkaye said:
are the 300A & 120A on the same site OK too?
they look similar
Click to expand...
The major problem with the standard SSR relays were the terminals were too small. Are the ones you are talking about DC relays at DC-AC they look alike. I can recommend the standard 500Amp ones as I have been using for weeks. But I do not have long continuous high loads my average load is less than 20Amp with a high in the 60Amp range for only minutes though. All my high load testing has been done with contrived max load situations.
 
looks like the 120A have smaller terminals, but 200A+ seem to be the same
maybe just get (2) 200A
so, will these pass 200A (heatsinked) w/o melting down?
or should i get 200A (for 100A charging) and 300A for 200A load?

any reason these are 24-1600VAC - not 12VDC?
 
Last edited:
mkaye said:
looks like the 120A have smaller terminals, but 200A+ seem to be the same
maybe just get (2) 200A
so, will these pass 200A (heatsinked) w/o melting down?
or should i get 200A (for 100A charging) and 300A for 200A load?

any reason these are 24-1600VAC - not 12VDC?
Click to expand...
Send me a link to product you found. And yes get a relay that passes 2 to 3 times your draw.
 
thanks - started off in the right place & then got side tracked
 
onemorebattery said:
My 8-pack with a BMS8T is part of a much larger bank so it never sees more than 50 amps charge/discharge. For now I'm getting away with these cheapys. They don't get hot. They drop 9 mV at 24 V 50 amps and the coil current is 80 mA. If your charge/discharge amps are higher or you have an RV or where the installation is more than a few minutes work, etc. then it's not the relay to choose. But if you're a cheap bastard like me...
Click to expand...
They "May" work but remember this is Continous Duty not intermittent duty so keep a close eye on those relays.
:ROFLMAO::poop:(n) WON'T Ship to Canada ! What a Pile of Dwaddle ! Seriously Amazon ??? It s amazing how much WILL NOT SHIP TO CANADA even if US Company & Even if US Made Product. I've even had a US Company tell me they cannot ship a Canadian Made product to Canada from the US. Imagine that, I was GOBSMACKED at that ! I contacted the Manufacturer here in Canada and they shipped it to me WHOLESALE and they put a list of Canadian Companies that sell their products on their website (none of them on eBay or Amazon)

mkaye said:
are the 300A & 120A on the same site OK too?
they look similar
Click to expand...
You canb ONLY use DC-DC not DC-AC Relays, your looking under the wrong sub-category.
The ones you see on the website have Very Small screws
leichuangtec-cable-jpg.10820
 
Following still choosing my bms. Electrodacus requires expensive inverter andChargery relay consumption bothered me but now this is getting good... Can someone help me understand the time delay board is that used for a precharge system for the inverter. I would wire this with a third relay and resistor. Does the precharge relay need to be high amp like the other sorry to hijack
 
The New Chargery Manual are coming, they have been sent to Chargery and they are doing their thing. Here is a part of the new manual, I am not posting the rest as people just gotta wait.

NEW (BMS 8) Delay Relay Config - COMMON Port.jpg
The Small Relay in this example is a simple automotive "Make & Break relay". The simplest and most common form of relay. The circuit between terminals 30 and 87 is Closed "on" when energized and Open "off" when de-energized, this is known as NO (Normally Open). Terminals 85 and 86 actuate the relay. Suggested to use a 12VDC / 10A or greater relay.

In this configuration, both the Charge and Discharge relays must be of equal Amperage rating as they share the common lines between the Motor / Inverter and battery.

For example: 24V/4000W Inverter will draw (4000W ÷ 24VDC = 166.66A) X 1.25 = 208.3A
Note a Low Frequency Inverter is capable of 3X the wattage (12,000W) for momentary surge.
The relays in this case should be sized 200A or greater
 
Steve_S said:
The New Chargery Manual are coming, they have been sent to Chargery and they are doing their thing. Here is a part of the new manual, I am not posting the rest as people just gotta wait.

View attachment 11074
The Small Relay in this example is a simple automotive "Make & Break relay". The simplest and most common form of relay. The circuit between terminals 30 and 87 is Closed "on" when energized and Open "off" when de-energized, this is known as NO (Normally Open). Terminals 85 and 86 actuate the relay. Suggested to use a 12VDC / 10A or greater relay.

In this configuration, both the Charge and Discharge relays must be of equal Amperage rating as they share the common lines between the Motor / Inverter and battery.

For example: 24V/4000W Inverter will draw (4000W ÷ 24VDC = 166.66A) X 1.25 = 208.3A
Note a Low Frequency Inverter is capable of 3X the wattage (12,000W) for momentary surge.
The relays in this case should be sized 200A or greater
Click to expand...
I am learning a lot here! Thanks for all the work you're doing!
 
Steve_S said:
Partial SSR UPDATE:
I have the Two New 500A SSR's (Solid State Relays) coming, shipping out tomorrow as they have just completed internal factory tests.
The price is 78 usd/pcs, 2 pcs are 156usd.
The heat sink is 4.8usd/pcs, 2pcs are 9.6usd.
Shipping cost are 38usd, ship by UPS.
Total: 203.6usd.

LISTED AS OF THIS MORNING !
500A Heavy Terminal: (US $78.00)
https://www.alibaba.com/product-det....41413.12.397f7242O1c4py&fullFirstScreen=true

1000A Heavy Terminal: (US $128.00)

This product is no longer available.

This product is no longer available.
www.alibaba.com www.alibaba.com

These are the LeiChuangTec Ones by the way, NOT the new ones being done by Chargery.

View attachment 10972View attachment 10973View attachment 10974View attachment 10975
Click to expand...
Link for heatsink
 
i cancelled my IC GOGOGO order for the BMS & relays
sent email to Jason - hopefully get BMS direct
now looking at relays again - fused 200A inverter, 100A charging
i like the new 500A SSR, but the heatsinks are HUGE - 40ma
the DH200 or EV200AAANA looks like the best fit - 150ma
so not a big difference in current in the big scheme of things
just finding a convenient & reliable delivery to Canada for either...
 
EDIT - UPDATE - MAY 31, 2020.

The DH200 Series is the INCORRECT TYPE - it is Unidirectional
The Correct Type to Consider is the DHV200 which is Bi-Directional & Energy Saver.
Leaving this post intact but will add a post to this thread with an update on this.
Link to Post : https://diysolarforum.com/threads/source-for-relays-for-bms8t.5749/post-84679

---- Original Post ----
I have two of the DH200H power saver relays coming from Dongya, they are expected next week sometime. The NEW LieChuanTec 500A SSR's with big lugs are expected on Monday. No word on the new SSRs from Chargery as yet but as I recall Jason they'd be testing internally this past week, so possibly ready for prelimiary testing next week.

Unlike Craig who is testing SSR's etc in a more controlled manner, I will be putting these onto production mode testing on my live system, gonna be a bit weird because of my setup which is in "major flux" as the end design will be affected by what I learn from using the different relays. I am not sure how my testing will proceed as I have a few things yet to work out so that I capture the information I want.

ON the Dongya DH200H12AH they come in different formats, you will have to pick Horizontal or Crosswire, the wire length, 12V Coil Voltage and state you require NO (Normally Open" configuration . They NORMALLY DO NOT SELL < 30 pcs BUT you can ask to get "Samples" The DH200H is USD 22.50 per piece EXW. + S&H which for me in Canada was $40 USD for the two. Unfortunately they do not have a Retail Outlet as such so doing business with them is a bit different. The accept PayPal too and will send an invoice through PP.
NOTE: Because they are NOT retailer's, they do production runs to fill orders and keep a low standing inventory on hand. IF they have the inventory on and they can ship fast but if they need to do a production run it may take a bit of time before shipping (lead time). Alternately, you can take your chances with https://www.electriccarpartscompany...-12-Volt-900-Volt-with-9-Volt-36-Volt-DC-Coil (for $80USD) and they have the 250A on as well (for $86 USD)
REMEMBER to tell them you were referred from DIYSolarForum They KNOW of this site and know Will's videos ! The more inquiries they see from here is more incentive to market to this ever increasing group.

REF LINK ONE: https://en.cndongya.com/dh150-250-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200h.htm
REF LINK TWO: https://www.dc-contactors.com/dh150-300-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200

A SMART Entrepreneurial Spirit would order a small stock of these Dongya DH series relays and the new LieChuangTec SSRS and sell them on eBay they'd likely sell well if aimed at the right market-sector... probably wiser after some of us get our hands on them and give them a thrashing, although I expect these will perform just fine..

DH200H12VA[2038].jpg

Hope that helps some.
Steve
 
Last edited:
Steve_S said:
I have two of the DH200H power saver relays coming from Dongya, they are expected next week sometime. The NEW LieChuanTec 500A SSR's with big lugs are expected on Monday. No word on the new SSRs from Chargery as yet but as I recall Jason they'd be testing internally this past week, so possibly ready for prelimiary testing next week.

Unlike Craig who is testing SSR's etc in a more controlled manner, I will be putting these onto production mode testing on my live system, gonna be a bit weird because of my setup which is in "major flux" as the end design will be affected by what I learn from using the different relays. I am not sure how my testing will proceed as I have a few things yet to work out so that I capture the information I want.

ON the Dongya DH200H12AH they come in different formats, you will have to pick Horizontal or Crosswire, the wire length, 12V Coil Voltage and state you require NO (Normally Open" configuration . They NORMALLY DO NOT SELL < 30 pcs BUT you can ask to get "Samples" The DH200H is USD 22.50 per piece EXW. + S&H which for me in Canada was $40 USD for the two. Unfortunately they do not have a Retail Outlet as such so doing business with them is a bit different. The accept PayPal too and will send an invoice through PP.
NOTE: Because they are NOT retailer's, they do production runs to fill orders and keep a low standing inventory on hand. IF they have the inventory on and they can ship fast but if they need to do a production run it may take a bit of time before shipping (lead time). Alternately, you can take your chances with https://www.electriccarpartscompany...-12-Volt-900-Volt-with-9-Volt-36-Volt-DC-Coil (for $80USD) and they have the 250A on as well (for $86 USD)
REMEMBER to tell them you were referred from DIYSolarForum They KNOW of this site and know Will's videos ! The more inquiries they see from here is more incentive to market to this ever increasing group.

REF LINK ONE: https://en.cndongya.com/dh150-250-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200h.htm
REF LINK TWO: https://www.dc-contactors.com/dh150-300-high-voltage-dc-contactor/high-voltage-dc-contactor-dh200

A SMART Entrepreneurial Spirit would order a small stock of these Dongya DH series relays and the new LieChuangTec SSRS and sell them on eBay they'd likely sell well if aimed at the right market-sector... probably wiser after some of us get our hands on them and give them a thrashing, although I expect these will perform just fine..

View attachment 11370

Hope that helps some.
Steve
Click to expand...
Patiently waiting for your dongya results. If they work I will order a BIG batch
 
Great info Steve. We all appreciate your trailblazing!
The horizontal type looks like a knockoff of the gigavac gv200.
but for 30% the cost I’d be on it too had I known. It isn’t a complex device. But the reliability is critical. Hope it tests out.

the high current SSR likely is the ticket. On my camper I have another high draw continuous duty relay or two I might replace with the SSR. I read about your use of hybrid FLA and LFP bank. Will have to compare notes after I have more time on the camper after the lockdown. Including possibly on Chargery settings.
 
Craig said:
Patiently waiting for your dongya results. If they work I will order a BIG batch
Click to expand...
That would be cool, I think I would be "restrained" and get a "test batch" of 200A & 250A of maybe 10 pieces each just as a starter.
In general, the reviews related to the Dongya DH family in the EV builder's & tinkerer sites has been good but it is limited. These are pretty standard tech, no surprises in how these are made really... emma.chen@cndongya.com was very helpful and made sure I had all the i's dotted & t's crossed to ensure I got exactly what I needed and the service from their sales end was stellar I must say.

@DW SD Yes, I believe these are quite similar to the Gigavac & TE units but then again it isn't rocket science to make these, there are only so many ways to make relays, it really comes down to individual components used to make the relays. SSR's on the other hand can be more tricky and the quality of the bits within can be quite varied. The FLA + LFP mix is a bugger ! ATM it is a necessary evil during the prolonged transition but hopefully soon the FLA will get shifted to alternate duty in the greenhouse when I get to build that (snow is just now finally vanishing). The FLA+LFP mix has been an "adventure" but it is short term pain I can live with.
 
@Steve_S
So far my testing of hybrid bank is going great. But limited. Haven’t even overnighted yet. I anticipate great results. But I don’t need to max out the capacity. My AGM bank met my needs already. The LFP project ⎌was mostly to mess around and learn. I may always have a hybrid bank due to wanting my alternator and SCC always “see” a battery in the (unlikely) event of BMS taking my LFP offline.
Maybe I’m overlooking something that might cause me to call it a bugger too? So far that isn’t my conclusion. Maybe ignorance is bliss ?
 
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