Hunan GCE Technology Co.,Ltd
jeffreyth@hngce.com
86-731-86187065
Product Details
Place of Origin: China
Brand Name: GCE
Certification: CE/ROHS/MSDS
Model Number: RBMS-S20-250A-409.6V
Payment & Shipping Terms
Minimum Order Quantity: 2 Sets
Price: negotiable with bruceliu@hngce.com
Packaging Details: Corrugated Carton, bundles, pallets, wooden box
Delivery Time: 15-20 days
Payment Terms: FOB/CFR/EXW
Supply Ability: 1000pcs / month
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Rated Current:
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250A
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Current Sampling Accuracy:
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1%FSR
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Parallel Loop Current Control:
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Support
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System Protection Parameter Setting:
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Support
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Power Consumption:
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≤15W
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Battery Charge And Discharge Management:
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Support
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HMI Display:
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4.2-inch Or 7-inch External Screen
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Battery String:
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128S
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Rated Current:
|
250A
|
|
Current Sampling Accuracy:
|
1%FSR
|
|
Parallel Loop Current Control:
|
Support
|
|
System Protection Parameter Setting:
|
Support
|
|
Power Consumption:
|
≤15W
|
|
Battery Charge And Discharge Management:
|
Support
|
|
HMI Display:
|
4.2-inch Or 7-inch External Screen
|
|
Battery String:
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128S
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The GCE 4U RBMS is a high-voltage rack battery management system engineered for 128S LiFePO4 racks at 409.6V nominal and 250A rated current. Positioned between the BMU and SBMS layers, it completes a three-level architecture (BMU + RBMS + SBMS) in which up to 15 racks operate in parallel under a single cluster controller.
The unit is housed in a standard 19-inch 4U chassis measuring 482×180×500mm and weighing approximately 22kg, with front-in, front-out wiring. It delivers 1000V / 25kA / 20ms short-circuit breaking capability and includes a built-in pre-charge circuit. A dual power supply draws from both battery power and municipal power with municipal priority, so the BMS remains active and continues logging even when the rack is isolated. Protection parameters, cell voltage and current limits are configured and locked at commissioning; event memory stores 5,000 records, with SD card expansion available for extended cell history.
Communication covers CAN to the BMU layer, RS485/CAN to PCS, inverter and UPS, RS485/CAN to the SBMS, and Ethernet to monitoring software. Both the GCE protocol and third-party PCS/inverter/UPS adaptation are supported. For 128S 409.6V systems, the 750V voltage class is specified, covering 260–750VDC operation with a 467.2V top-of-charge ceiling at 3.65V per cell.
Certified to CE (IEC 62477-1, EN 61000-6-2/-4) and RoHS, and compliant with GB/T 16935.1, GB/T 17626.2 and GB/T 17626.5.
| Item | Specification |
|---|---|
| Model | RBMS-S20-250A-409.6V |
| Configuration | 128S LFP, 409.6V nominal (3.2V/cell) |
| Voltage class | 750V (operating range 260–750VDC) |
| Max charge voltage | 467.2V @ 3.65V/cell |
| Rated current | 250A (125A / 160A optional) |
| Rated DC power | ≈102.4kW @ 409.6V / 250A |
| Current sampling accuracy | 1%FSR |
| Power consumption | ≤15W (two-wire) / ≤25W (three-wire, center tap) |
| Insulation withstand | 2800VDC, <1mA, 1min |
| Insulation detection | Applicable to systems ≥300VDC (optional) |
| Ingress protection | IP20 |
| Operating temperature | -20℃~45℃; derating above 45℃ per Fig.2 curve |
| Operating humidity | 5%–75%RH |
| Dimensions (W×H×D) | 482×180×500mm |
| Net weight | ~22 kg |
| Installation | Standard 19-inch rack, 4U |
| Wiring | Front side in, front side out; M8×16 terminals, 70mm² cable min |
| Communication | BMU: CAN / PCS, Inverter, UPS: RS485, CAN / SBMS: RS485, CAN / Monitoring: Ethernet |
| Dry contact | Max 2 outputs (NO), charge-prohibit and discharge-prohibit |
| Event record | 5,000 events |
| Color | RAL 9005 black sand grain |
| Standards | GB/T 16935.1, GB/T 17626.2, GB/T 17626.5 |
| Safety | CE (IEC 62477-1, EN 61000-6-2/-4), RoHS |
The GCE 4U high voltage rack BMS is suited to a broad range of energy storage and backup deployments:
Commissioning guidance, parameter configuration, protocol adaptation, troubleshooting, firmware updates, and on-site or remote training for integrators.
Q: What is the model?
A: RBMS-S20-250A-409.6V.
Q: What configuration does it manage?
A: 128S LFP racks at 409.6V nominal, up to 15 racks in parallel, expandable to 256 cells in series.
Q: Which voltage class applies to 409.6V?
A: 750V class, 260–750VDC operating range, 467.2V max charge.
Q: What certifications does it hold?
A: CE (IEC 62477-1, EN 61000-6-2/-4), RoHS; compliant with GB/T 16935.1, GB/T 17626.2, GB/T 17626.5.
Q: What are the MOQ and lead time?
A: 1 set, 15–20 days.
Q: Can it work with third-party PCS?
A: Yes, protocol adaptation is done per customer requirement.
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