120s 125A BMS 384V BMS 120S BMS High Voltage Battery Management System With Relay Contactor Slave And Master For UPS ESS
Company profile:
Hunan GCE Technology Co., Ltd. is a high-tech company specializing in the research and development of BMS and
lithium battery peripheral equipment. The high-performance intelligent lithium battery management system produced by
our company adopts the international leading technology, which greatly improves the battery management efficiency and
prolongs the service life of lithium battery. The advanced BMS control strategy avoids the difficulties and instability faced
by most competitors for our BMS.
4S to 24s low voltage software BMS has a wide range of uses, rich product interfaces, strong scalability and secondary
development compatibility. 30s to 75s BMS adopts master-slave integrated design and relay solution to meet the lithium
battery demand of multiple strings of small capacity batteries. Greatly reduce the use cost of users. 60s-270s adopts
master-slave three-level architecture, which can meet the series and parallel requirements of high-capacity single lithium
batteries within 1000V.
By mastering the core technology of BMS and inventing on this basis, our company has developed a variety of lithium
battery peripherals to meet the high-quality needs of the market.



3U standard 19inch case
Efficient, stable and reliable
W440*H133*D500mm




--Specification--
item | value |
Place of Origin | China |
| Hunan |
Application | Solar Energy Storage Systems |
Brand Name | GCE |
Model no. | RBMS07S20-125A384V |
protecting method | MCCB+Contactor |
Rated Current range | -125A~125A |
Voltage Range | 120V-680V |
Current Sampling Accuracy | 1.0%FSR |
Communication interface with UPS | RS485/CAN |
Communication interface with BMU | CAN |
Communication interface with SBMS | Communication interface with SBMS |
Communication with monitoring software/EMS | Ethernet |
Support IAP upgrade | Yes |
Support HMI display and parameter | Yes(Optional) |
Insulation detection | Yes(Optional) |
High voltage power module | Support DC start (optional) |
Dry contact output (normally open) | Up to 3 |
Maximum qty of BMUs | 13 |
Power | 24VDC(18~28V) |
Power consumption | ≤15W |
Size(W*H*D)mm | 3U (482*132*500mm) |
Way out | Front |
Mid-line | Not support |
Tap center | Not support |
Net weight | 15kg |
Model no.: RBMS07S2-3-125A384V
BMS solution as below:
1set Master RBMS
8 sets 15S Slave BMU
8 sets 15S Wire Harness

Accessoires including:
12S-24S BMU(Slave)
12S-24S BMU has 8pcs of tempreture sensors, Fan voltage 48V(17S-24S 12V), voltage detection range 0-5V,12V power
supply,consumption less 20mA, CAN2.0 B communication

Wire harness-Signal acquisition wire
18 Pin+20Pin wire, standard length is 600mm,900mm,1200mmtempreture sensor wire: standard length is 600mm,900mm,1200mm
Fan wire: 600mm

Wire harness-communication wire
Communication wire is connecting from master BMS to each BMU with cascade connection, the last port is for terminal resistance
Product Features:
1. Advanced Battery Management System
2. perfect self-test and operational status detection, with HMI display, system operation information at a glance.
3. perfect and reliable system control and protection strategies to fully protect the battery safety, extend the life of the battery escort.
4. Modular design, configurable, scalable
5. Rich communication interface
6. Flexible communication interface protocol
7. Capacity is large
8. PCS has a protocol control function, the choice of circuit breaker version .
9. PCS without protocol control function, the choice of contactor + breaker version.
10. Automatic circulation control and automatic parallel machine off-line control, can be easily parallel battery. (Model suffix selection D).
BMS structure:
