Growatt spf 5000 es using dry contact to switch to grid by relay.
- Thread starter JOVO
- Start date
yes, since last year I use the dry contacts to connect and disconnect grid to the inverter as the old version 067 and below have issues with phase synchronisation in SBU and SUB mode. since I use the dry contacts I run the inverter with UTI and it behaves exactly like SBU should.
prince_a
New Member
Regarding the Dry contact, can the growatt 3000 ES can use 24V - AC on the dry contact ( as its dry contact and not wet connect, just want to confirm ) ???
marbella
New Member
- Joined
- Feb 11, 2022
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- 93
So you run it as UTI and when it cries for power you close your mains input relay?
Cool idea! Mine is newer version 114 and runs good on SBU
Yes I hardwired everything and disconnect my grid completely via an ATS from the inverter. This saves also a lot of standby energy and works great since months. I also added a logic which automates the shutdown of my second inverter in winter at night time or even the master inverter when the battery is at 20%.
Last edited:
Hi
i am running 2 spf5000es in parallel and i want to use the dry contact
1 do i need to do anything with the settings?
2 what voltage expected from the contact, the manual state 240v ac @ 3a
3 can you give me example how to tast the contacts as nothing is happening according to voltmeter? Like connecting a light bulb or small load etc at what settings 12 and 13 in SBU mode.
Much appreciated.
@sydzz you can use any voltage and voltage type you want up to 3A/230VAC. your manual will explain everything around page 11.
Yes P12, P13 and P21 have influence how and when the dry contact uses which contact situation, this is also explained in the manual.
you will not measure a voltage if there is no source. you can measure resistance on the dry contact to check the state of the relay.
Here are basic information how contactors work
forumelectrical.com
Yes P12, P13 and P21 have influence how and when the dry contact uses which contact situation, this is also explained in the manual.
you will not measure a voltage if there is no source. you can measure resistance on the dry contact to check the state of the relay.
Here are basic information how contactors work
How to Test a Relay? Checking SSR & Coil Relays
In electrical and electronic systems, testing a relay - whether it's a coil or solid-state relay (SSR) - is essential to ensuring good operation. Testing parameters such as response time, input & output characteristics, and others are common testing. This post provides some insights into testing...
forumelectrical.com
@sydzz you can use any voltage and voltage type you want up to 3A/230VAC. your manual will explain everything around page 11.
Yes P12, P13 and P21 have influence how and when the dry contact uses which contact situation, this is also explained in the manual.
you will not measure a voltage if there is no source. you can measure resistance on the dry contact to check the state of the relay.
Here are basic information how contactors workHow to Test a Relay? Checking SSR & Coil Relays
In electrical and electronic systems, testing a relay - whether it's a coil or solid-state relay (SSR) - is essential to ensuring good operation. Testing parameters such as response time, input & output characteristics, and others are common testing. This post provides some insights into testing...Thanks that explains it, i thought it will provide 230v but now i understand i need to use it as a switch@sydzz you can use any voltage and voltage type you want up to 3A/230VAC. your manual will explain everything around page 11.
Yes P12, P13 and P21 have influence how and when the dry contact uses which contact situation, this is also explained in the manual.
you will not measure a voltage if there is no source. you can measure resistance on the dry contact to check the state of the relay.
Here are basic information how contactors workHow to Test a Relay? Checking SSR & Coil Relays
In electrical and electronic systems, testing a relay - whether it's a coil or solid-state relay (SSR) - is essential to ensuring good operation. Testing parameters such as response time, input & output characteristics, and others are common testing. This post provides some insights into testing...
Ha that's why i was thinking it will provide a 230v but now it make sence just use it as a switch@sydzz you can use any voltage and voltage type you want up to 3A/230VAC. your manual will explain everything around page 11.
Yes P12, P13 and P21 have influence how and when the dry contact uses which contact situation, this is also explained in the manual.
you will not measure a voltage if there is no source. you can measure resistance on the dry contact to check the state of the relay.
Here are basic information how contactors workHow to Test a Relay? Checking SSR & Coil Relays
In electrical and electronic systems, testing a relay - whether it's a coil or solid-state relay (SSR) - is essential to ensuring good operation. Testing parameters such as response time, input & output characteristics, and others are common testing. This post provides some insights into testing...
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