The BYD Combiner Box is suitable for connecting in parallel two or three battery systems from the HVS/HVM series. Storage sizes of up to 66.3 kWh (HVM) can therefore be achieved. When designing the entire battery system, the planned configuration must comply with BYD specifications. For example, all battery towers must have the same number of modules to prevent imbalances. In addition, HVS and HVM towers cannot be combined with one another. Only identical storage elements with identical storage models ensure a completely trouble-free and high-performance operation.
Combiner Box CBA-40 A
The CBA-40 A Combiner Box draws a maximum input current of 35 amps and in turn delivers a maximum output current of 40 amps at a maximum output voltage of 1000 V DC. Installation and wall mounting is quick and easy as the box weighs just 9.7 kg and the mounting kit is included in delivery.
The connection panel on the underside of the device is clearly structured and well laid out: on the left are the input terminals for up to three battery towers, on the right the outgoing connections to the inverter. The cross-section for the DC connections can comfortably accommodate the recommended and conventional 6 mm² PV cables. This means that no additional costs are incurred for expensive special cables or terminals.
Thanks to its compact dimensions, the Combiner Box can be installed in close proximity to the battery towers and inverter. The charging status should be the same for all towers and modules during installation as this is the only way to ensure an even initial charge.
To connect up all components, the Combiner Box contains all necessary connections, connectors and protection to ensure safe operation. The high-quality housing is very robust and protected against contact, dust and water jets in accordance with IP55, which provides the appropriate protection for electrical events and increases the longevity of the box. The device is maintenance-free and only requires an annual visual inspection by qualified personnel.
By using the Combiner Box and interconnecting three battery storage units that can be charged simultaneously, the system achieves very large capacities of storage power for use later on. The Combiner Box is key to laying the foundations for a high level of self-sufficiency using self-produced solar power, making you independent of line current and enabling the use of powerful consumers that can be operated with low-cost electricity.
Hybrid inverters: KOSTAL PLENTICORE plus