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GCE BMS High Voltage 80S 256V +- 128V 3-Wire Center-Tap 700V 250A UPS Battery

China GCE BMS High Voltage 80S 256V +- 128V 3-Wire Center-Tap 700V 250A UPS Battery

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GCE BMS High Voltage 80S 256V +- 128V 3-Wire Center-Tap 700V 250A UPS Battery

MOQ： 2 uints
Price： $1065
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Supply Ability	1000 units per month
Product name	Battery Management System BMS
Application	ups backup power supply
BMS Type	Master-slave BMS architecture
Delivery Time	25 workdays
Size	482180500(mm)
Payment Terms	L/C, T/T
Suitable Battery type	Lithium batteries,LFP/NMC/LTO
Weight	22kg
Communication	RS485/CAN/TCPIP
Warranty	3 Years
Current	125A,160A, 250A(Optional)
Capacity	100Ah/150Ah/200Ah/280Ah/314Ah/any capacity
Packaging Details	Cardboard box foam packaging
Balancing Tech	Active/passive balance(Optional)
Max Voltage	350V,750V,1000V(Use according to rated voltage match)
Model Number	RBMS-S37-250A-350
Brand Name	GCE
Certification	CE
Place of Origin	china

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Product Specification


Supply Ability	1000 units per month	Product name	Battery Management System BMS
Application	ups backup power supply	BMS Type	Master-slave BMS architecture
Delivery Time	25 workdays	Size	482180500(mm)
Payment Terms	L/C, T/T	Suitable Battery type	Lithium batteries,LFP/NMC/LTO
Weight	22kg	Communication	RS485/CAN/TCPIP
Warranty	3 Years	Current	125A,160A, 250A(Optional)
Capacity	100Ah/150Ah/200Ah/280Ah/314Ah/any capacity	Packaging Details	Cardboard box foam packaging
Balancing Tech	Active/passive balance(Optional)	Max Voltage	350V,750V,1000V(Use according to rated voltage match)
Model Number	RBMS-S37-250A-350	Brand Name	GCE
Certification	CE	Place of Origin	china
High Light	GCE BMS High Voltage 80S 256V ，UPS Battery Management System with CAN RS485 ，High Voltage BMS with TCP/IP

High Voltage Rack Battery Management System (RBMS)

Industrial-grade 3-wire center-tap BMS designed specifically for UPS and energy storage systems with neutral line requirements. Supports up to 750V voltage classes and 250A continuous current.

Product Overview

The 4U High Voltage Rack Battery Management System (RBMS) is a highly integrated, industrial-grade BMS designed specifically for 3-wire (center-tap / neutral-line) UPS and energy storage systems. It delivers seamless monitoring, robust protection, and flexible communication to safeguard large-scale lithium battery packs in demanding commercial and industrial environments.

Supporting voltage classes up to 750V (260-750 VDC operating range) and continuous currents of 125A / 160A / 250A, this RBMS is the backbone of reliable battery clusters for UPS power supply, PV plant storage, micro-grids, and 220V DC power systems.

Applications

PV Plant Storage - Grid-tied and off-grid solar energy storage for utility-scale projects

UPS Power Supply - 3-wire center-tap configuration purpose-built for UPS with neutral line

Industrial & Commercial ESS - Peak shaving, backup power, and demand management for C&I facilities

Island / Off-Grid Storage - Standalone power systems for remote areas without grid access

Micro-Grid Applications - Distributed energy resource management and local grid stabilization

Power System 220V DC - Telecom and substation 220V DC backup power supply systems

Key Features

3-Wire Center-Tap Architecture - Purpose-built for systems requiring a neutral line (B+ / N / B- and P+ / N / P-), ensuring safe and balanced operation with UPS and center-tap inverters
Advanced Integrated BMS - Highly integrated battery management enables seamless real-time monitoring of every cell, module, and system-level parameter
Self-Check & HMI Display - Comprehensive self-diagnosis and operating-status detection, paired with an optional 4.3" or 7" external HMI screen for at-a-glance system visibility
Multi-Level Protection - Reliable control and protection strategies (OVP, UVP, OTP, OCP, SCP) extend pack life and ensure personnel safety. Short-circuit protection: 1000V / 25kA / 20ms
Modular & Scalable - Multiple energy storage units can be flexibly combined. Supports up to 256 cells in series (400S for lead-carbon batteries)
Rich Communication Interfaces - CAN, RS485, Ethernet (TCP/IP), and dry-contact I/O. Compatible with most PCS, Inverters, UPS, and monitoring servers on the market
Flexible Protocols - Ships with the factory communication protocol; custom protocol adaptation for different brands of PCS / Inverter / UPS is available on request
High-Capacity Data Logging - Built-in large-capacity memory chip stores critical operational data. Optional SD card for historical cell-level data archiving
Parallel Operation Ready - Automatic circulation control and automatic parallel / offline control support multi-cluster systems (up to 15 RBMS units via ID DIP switches)
Dual Power Supply - Supports battery + mains AC input (85-264 VAC, ≤1A) with mains-priority logic. Must be taken from the UPS output side

GCE BMS High Voltage Rack System front view

GCE BMS interface and connection details

Model Naming Guide

Format: RBMS -- S/D -- 2/3 -- 0/4/7 -- XXXA -- XXX

Position	Code	Meaning
1	RBMS	Rack Battery Management System
2	S / D	S = Standalone (2-level: BMU+RBMS); D = Multi-cluster Parallel (3-level: BMU+RBMS+SBMS)
3	2 / 3	2 = Two-wire system; 3 = Three-wire (center-tap) system
4	0 / 4 / 7	0 = No screen; 4 = 4.3" HMI display; 7 = 7" HMI display
5	125A / 160A / 250A	System rated current
6	350 / 750 / 1000	Voltage class: 350 = 120-350VDC; 750 = 260-750VDC; 1000 = 500-1000VDC

Example: RBMS-D37-250A-750 = Parallel-ready, 3-wire, 7" display, 250A rated, 750V class.

Technical Specifications

Basic Parameters

Parameter	Value / Range
Rated Current	125A / 160A / 250A (optional)
Voltage Class	350V (120-350VDC) / 750V (260-750VDC) / 1000V (500-1000VDC)
Max Voltage	Matched to rated voltage class
Power Consumption	≤25W (3-wire system); ≤15W (2-wire system)
Current Sampling Accuracy	1% FSR
Insulation Withstand Voltage	2800VDC, <1mA, 1min
Protection Level	IP20
Dimensions (W×H×D)	482 × 180 × 500 mm
Net Weight	~22 kg
Installation	Standard 19-inch rack mount, front-in / front-out
Operating Temperature	-20℃ ~ +45℃ (derate above 45℃)
Operating Humidity	5% ~ 75% RH
Appearance / Color	RAL9005 Black Sand Texture

Communication Ports

Port	Interface	Function
BMU-OUT	CAN	Communication with BMU; cascade BMU communication
COM-IN / COM-OUT	RS485 / CAN	Parallel: communicate with SBMS; Standalone: communicate with UPS/PCS external equipment
TCP/IP	Ethernet (RJ45)	PC connection for upper-computer software; CAT5 or above
HMI-A / HMI-B / 24V / GND	3.81-4Pin	External HMI display connection / SBMS power supply
D1 D2	Dry Contact (NO)	2-channel dry contact output for charge / discharge prohibition signals

Basic Functions

Function	Status	Details
Battery Charge & Discharge Management	Supported	Automatic charge/discharge control with configurable thresholds
Battery Temperature Management	Supported	Multi-point temperature monitoring and protection
IAP Upgrade	Supported	In-Application Programming for firmware updates
System Protection Parameters	Supported	User-configurable protection settings
Short-Circuit Protection	Supported	1000V / 25kA / 20ms
Pre-Charge Function	Supported	Pre-charge circuit for safe inverter/UPS connection
Parallel Circulation Control	Supported	Automatic current sharing in multi-cluster setups
Event Record	Supported	Up to 5000 event logs
3-Wire Center-Tap System	Supported (Optional)	B+ / N / B- and P+ / N / P- power terminals
Dual Power Supply	Supported	Battery + AC mains (85-264VAC, ≤1A); mains priority

Safety & Certifications

Standard	Description
CE	IEC 62477-1, EN 61000-6-2 / EN 61000-6-4
GB/T	GB/T 16935.1, GB/T 17626.2, GB/T 17626.5

Optional Functions

Insulation Detection - Applicable to systems ≥300V
HMI Display - 4.3" or 7" external display (optional)
Standalone / Parallel - Configured before shipment

Interface Description

No.	Name	Description	Precautions
1	B+ / N / B-	Battery-side power terminals (total positive, neutral, total negative)	For 2-wire systems, do NOT connect N. Bolt: M8×16, torque 8-12N*m; cable ≥70mm² (2/0AWG) copper
2	P+ / N / P-	Load-side power terminals to UPS / DC bus	For 2-wire systems, do NOT connect N. Bolt: M8×16, torque 8-12N*m; cable ≥70mm² (2/0AWG) copper
3	AC Input	Mains AC power input (85-264VAC, ≤1A max)	Must be taken from the UPS output side. Wire: 1.0mm² (18AWG)
4	ON / OFF	Circuit breaker handle	ON = closed; OFF = disconnected. If tripped, reset to OFF first before re-closing
5	D1 / D2	2-channel dry contact output (NO)	Charge prohibition / discharge prohibition signals
6	Start	DC start button	Press after breaker closure; LED lights = system powered on
7	System	System status LED	Green steady = normal; Yellow steady = alarm; Red steady = fault/protection; Green flash = charging; Red flash = discharging; Red/Green alt = self-check; Yellow flash = pre-charging
8	ID DIP Switch	4-bit DIP switch for parallel ID allocation	Must start from 1. Supports up to 15 RBMS units in parallel
9	TCP/IP	Ethernet port for PC upper-computer software	CAT5 or above; straight or crossover cable (TIA-568A / TIA-568B)
10	T-CAN / T-485	Termination resistor switches (120Ω)	Parallel: set only on the last unit. Standalone: set based on interference / distance
11	COM-IN / COM-OUT	External communication ports	Must use the supplied twisted-pair shielded cable harness
12	HMI-A / HMI-B / 24V / GND	External display / SBMS power interface	Connect display according to silkscreen sequence
13	BMU-OUT	BMU communication interface	Cascade communication with BMU modules
14	Ground	Chassis grounding point	Must be reliably grounded; grounding resistance <1Ω

Dimensions & Installation

Dimensions (W × H × D): 482 × 180 × 500 mm
Mounting: Standard 19-inch rack rails (4U height)
Cable Routing: Front-in / front-out design for easy maintenance in standard server cabinets
Weight: ~22 kg
Clearance: Ensure adequate ventilation; derate output above 45℃ ambient

The 3-wire (center-tap) model includes additional N (neutral) terminals on both battery side (B+ / N / B-) and load side (P+ / N / P-). This configuration is purpose-built for UPS systems that require a neutral line connection.

Safety Precautions

High voltage inside. Only authorized technicians may open the chassis. Unauthorized disassembly voids warranty and risks.

After secondary protection trips, power off the system, clear the fault, and wait at least 1 minute before restarting to allow the circuit breaker shunt coil to cool
When cold-starting a PCS / Inverter / UPS from the battery, close the battery switch on the PCS side before starting the RBMS. Closing a charged battery into a large DC-bus capacitor can cause contactor arcing and welding
Installation and commissioning personnel must use insulated tools
For maintenance, disconnect the RBMS main circuit breaker to isolate the battery pack from the DC bus
Charging/discharging current and voltage parameters are factory-set during commissioning. Do not change them without authorization
In case of fire, use dry powder extinguishers or fire sand only
If the system will be idle for a long time, disconnect the main circuit breaker of the battery cabinet
Avoid prolonged use in environments exceeding specified temperature/humidity, with strong vibration, direct sunlight, dust, corrosive substances, or high salt fog

Standard Accessories

Name	Specification	Qty
Power Terminal Sheath (Black)	Black	4 pcs (3-wire model) / 2 pcs (2-wire model)
Power Terminal Sheath (Orange)	Orange	2 pcs
External Communication Cable	6-core shielded, 2 meters	1 pc
AC Socket (Wireable)	250V 10A	1 pc
Dry Contact Terminal	5.08-4Pin	1 pc
Terminating Resistor	120Ω	1 pc
Display Terminal	3.81-4Pin	1 pc

Frequently Asked Questions

What is a 3-wire center-tap BMS, and do I need it?

A 3-wire (center-tap) BMS provides a neutral (N) terminal in addition to positive and negative, enabling balanced connection to UPS and inverters that require a neutral line. If your UPS or inverter specifies a center-tap / neutral-line battery connection, this model is required.

Is this BMS compatible with my UPS brand?

Yes. The RBMS supports RS485, CAN, and Ethernet communication. We provide our standard protocol by default, and we can adapt the communication protocol to match most major UPS, PCS, and inverter brands upon request.

What voltage and current options are available?

Voltage classes: 350V (120-350VDC), 750V (260-750VDC), and 1000V (500-1000VDC). Rated current options: 125A, 160A, or 250A. Contact us to configure the right model for your battery cluster.

Can multiple RBMS units work in parallel?

Yes. The RBMS-D (parallel) version supports up to 15 units in parallel via DIP-switch ID allocation, with automatic circulation control for safe current sharing across battery clusters.

Do you support OEM and ODM?

Absolutely. We offer full OEM/ODM services including logo customization, enclosure color, communication protocol adaptation, firmware feature development, and private-label packaging. MOQ and lead time depend on customization scope.

What certifications does this product carry?

CE certification (IEC 62477-1, EN 61000-6-2 / EN 61000-6-4) and compliance with Chinese national standards GB/T 16935.1, GB/T 17626.2, GB/T 17626.5.

Ready to Power Your Next Project?

Get a tailored quote for your specific voltage, current, and communication requirements.

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Hunan GCE Technology Co., Ltd. | jeffreyth@hngce.com | www.hngce.com

Company Details

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Year Established:

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Total Annual:

23600000-30000000
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Employee Number:

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Hunan group control energy technology Co., Ltd. (GCE) is a high-tech company specializing in the research and development of BMS and lithium battery peripheral equipment. working in the factory: The high-performance intelligent lithium battery management system produced by our company adopts... Hunan group control energy technology Co., Ltd. (GCE) is a high-tech company specializing in the research and development of BMS and lithium battery peripheral equipment. working in the factory: The high-performance intelligent lithium battery management system produced by our company adopts...

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Hunan GCE Technology Co.,Ltd
Building B3, 602, Science and Technology New City, Changsha County, Changsha City, Hunan Province
https://www.hngce.com/

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