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Max input DC voltage limi...

Max input DC voltage limit

Created: May 21, 2021 07:38:26Latest reply: May 21, 2021 08:33:40 445 7 0 0 0
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Hi,

I got a 'Over voltage alarm' when connecting PV´s in series but the maximum Ocv was calculated to be under 1080v into one of the ports of my Sun2000-12.

When lowering it so that the maximum Ocv was 1026v it is working (When viewing it through App, i could see that the max voltage is around 912v during the day).


Is 1080v the max input Voltage or is it lower?


BR

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BetterMing
Created May 21, 2021 08:24:55

Hello, dear.

You can refer to the following technical parameters, the recommended 12KTL-M0 working voltage does not exceed 950V.

12KTL


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BetterMing
BetterMing Created May 21, 2021 07:39:52

Hello, dear.
Can you tell me the model of your equipment?
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Seven47
Seven47 Created May 21, 2021 07:44:22

Sun2000-12KTL-M0
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BetterMing
BetterMing Created May 21, 2021 08:24:55

Hello, dear.

You can refer to the following technical parameters, the recommended 12KTL-M0 working voltage does not exceed 950V.

12KTL


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Tang_li
Tang_li Admin Created May 21, 2021 08:25:25

The lower the temperature of the photovoltaic panel, the higher the voltage, most commonly in the morning and evening.
If your DC power supply is not overvoltage, send the log and device SN to the service center eu_inverter_support@huawei.com.
If the AC voltage is abnormal, check whether the AC voltage is within the operating range of the SUN2000.

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Unicef
Unicef MVE Created May 21, 2021 08:25:54

Hello friend!
- The open-circuit voltage of each PV string is always lower than or equal to 1080 V DC
- If the voltage is greater than 1080 V, too many PV modules configured in the same string. Remove
some PV modules.

input

Thanks!

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Seven47
Seven47 Created May 21, 2021 08:33:40

Ah, Ok. So 950v is actually the upper limit during production and 1080v is a limit that if its exceeded you can damage the system.

Thanks
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BetterMing
BetterMing Created May 21, 2021 09:27:41 (1) (0)
We are glad to be able to solve the problem for you.  
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