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Backup power in case of power failure
Function of the backup box Huawei
The Backup Box Huawei is used in PV systems on residential building roofs to switch the inverters to grid-connected or grid-decoupled status. Should the utility grid fail, the Huawei Backup Box switches the inverter to grid-decoupled status and supplies power in emergency mode. As soon as the power supply is working again, the Huawei Backup Box automatically switches the status again.
Here you can installation video or watch the video below.
HUAWEI BACKUP BOX-B0 | HUAWEI BACKUP BOX-B1 |
---|---|
SUN2000 -2/3/3.68/4/4.6/5/6KTL-L1 | SUN2000 -3/4/5/6/8/10KTL-M1 |
Huawei backup box installation video
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Question & Answer - Huawei Backup Box B1
Q&A on the Huawei Backup Box B1
Do these Huawei Backup Box-B1 come directly from Huawei?
Mini Power is one of Huawei's official distributors in Europe. We promise that all our products are original Huawei products.
Does the current price of Huawei Backup Box B1 include tax?
The price of Huawei Backup Box B1 is according to German annual tax law 0% VAT
Prices in other countries are calculated according to local tax rates.
Can three-phase consumers be supplied with the Huawei Backup Box-B1 in the event of a LUNA2000 emergency power supply?
The Backupbox-B1 provides a single-phase emergency power supply.
Note:
Consumers that require a rotary field (e.g. air heat pumps) cannot be supplied.
Note:
Consumers that require a rotary field (e.g. air heat pumps) cannot be supplied.
Does a setting in the inverter have to be changed or activated after installing the Backup Box Huawei B0 / B1?
Yes, after commissioning the inverter, the "grid-isolated mode" will appear if a backup box is present. This must be activated for emergency power operation to work properly.
The setting can be found under:
Settings -> Function parameters the function "Mains decoupled mode".
The setting can be found under:
Settings -> Function parameters the function "Mains decoupled mode".
Which pins of the COM connector on the inverter is the Backup Box Huawei connected to?
For SUN2000-2-6KTL-L1 inverters:
GND: Pin 5
DI: Pin 8
For SUN2000-3-10KTL-M1 inverters:
GND: Pin 16
DI: Pin 8
GND: Pin 5
DI: Pin 8
For SUN2000-3-10KTL-M1 inverters:
GND: Pin 16
DI: Pin 8
How long does the backup box Huawei B0/B1 switch to emergency power mode?
The backup box switches to emergency power mode in less than 3 seconds.
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