Description
ImaxPWR
Energy Storage Converter
Energy Storage Converter
BAC-1K0100-2 · 125kW
⚡ BAC-1K0100-2 Energy Storage Converter
125kW Bidirectional AC/DC Power Module
Designed for energy storage and smart grid applications, this reconfigurable non-isolated bidirectional AC/DC converter module utilizes 3rd-generation SiC power devices and coupled inductors to enable bidirectional power flow between battery and AC grid. It offers high reliability, high efficiency, strong scalability, full functionality, and easy installation & maintenance.
Efficiency ≥ 98.5%
Power 125 kW
Voltage DC 650–950 V
Ingress IP20
Module Hot-swappable
Power 125 kW
Voltage DC 650–950 V
Ingress IP20
Module Hot-swappable
99%Peak Efficiency
125kWRated Power
≤ 10Off-grid Parallel Units
24kgModule Weight
650–950VDC Voltage Range
220ADC Current Range
⚡ Core Features & Advantages
SiC power devices · dual-DSP digital control — High efficiency · Reliable · Easy maintenance
🔋 High Efficiency SiC
- 3rd-gen SiC power devices deliver up to 99% conversion efficiency
- Isolated duct design for superior heat dissipation
- Advanced software control reduces operating losses
- Ultra-low standby power ≤ 50W
⚙️ Full Functionality Multi-mode
- Grid-tied, off-grid, and hybrid operation; ≤ 10 units in off-grid parallel
- Constant power, constant current, and constant voltage control
- Communication: RS485, CAN, Ethernet
- Dry-contact expansion and N-line switching control
- Compatible with mainstream BMS and EMS protocols
🛡️ Safety & Reliability Dual DSP
- Dual-DSP fully digital control for mature, reliable performance
- Potting process resists salt spray, moisture, and mildew
- Complies with GB / CE / UL standards
- Comprehensive overvoltage, undervoltage, overtemperature, and short-circuit protection
🔧 Easy Maintenance Hot-swap
- Modular design, compact size, supports hot-swapping
- Simple wiring terminals for easy installation and removal
- Single module weight only 24 kg for efficient maintenance
- Single-module fault does not affect system operation, reducing downtime
🏭 Typical Applications
Flexible adaptation for energy storage · smart grid · microgrid · renewable integration
🔋
Energy Storage Systems
Battery storage, C&I storage, residential storage
🌐
Smart Grid
Frequency regulation, peak shaving, demand response
⚡
Microgrid & Renewables
PV + storage, off-grid supply, renewable integration
📋 Technical Specifications
BAC-1K0100-2 module — complete parameters
| Category | Parameter | Value |
|---|---|---|
| Environmental Conditions | ||
| Operating Temperature | -20°C ～ +70°C (derating above 50°C) | |
| Storage Temperature | -20°C ～ +70°C | |
| Relative Humidity | ≤ 95% RH, non-condensing | |
| Cooling Method | Forced air cooling | |
| Protection Rating | IP20 | |
| Altitude | 2000m (derating above 2000m) | |
| AC Port | ||
| Input Configuration | 3-phase 5-wire | |
| Voltage Range | 323 ～ 418 Vac | |
| Max Static Voltage (non-operating) | 600 Vac | |
| Rated Voltage | 380 Vac | |
| Rated Current | 190 A | |
| Grid Frequency | 45 ～ 55 Hz (50Hz) / 55 ～ 65 Hz (60Hz) | |
| Rated Frequency | 50Hz / 60Hz | |
| Power Factor | ≥ 0.97 @20%–50% output; ≥ 0.99 @50%–100% output | |
| THD | ≤ 3% @50%–100% full load | |
| DC Port | ||
| Voltage Range | 650 ～ 950 Vdc (grid/off-grid, SPWM) | |
| Current Range | 0 ～ 220 A (adjustable limit) | |
| Rated Current | 174 A @ 720 V | |
| Voltage Regulation Accuracy | ≤ ±1% | |
| Current Regulation Accuracy | ≤ ±2% (20%–100% rated load) | |
| Load Regulation | ≤ ±0.5% | |
| Start-up Overshoot | ≤ ±3% | |
| Grid Regulation | ≤ ±0.1% (320–437 V test range) | |
| Ripple Voltage | ≤ 1% (650–1000V, 0–20MHz) | |
| Overload Capability | ||
| 0 ～ 110% | Continuous (Ta ≤ 45°C) | |
| 110 ～ 120% | 1 minute (Ta ≤ 45°C) | |
| ≥ 120% | 200 ms | |
| Other | ||
| Peak Efficiency | ≥ 98.5% (@720Vdc, 380Vac) | |
| Standby Power | ≤ 50W (@720Vdc, 380Vac, Ta ≤ 45°C) | |
| Noise | ≤ 65dB (1m distance) | |
| Mechanical | ||
| Dimensions (excluding handles & terminals) | 640mm × 640mm × 240mm | |
| Weight | ≤ 80 kg | |
Note: DC voltage range corresponds to rated AC voltage 380Vac. In practice, DC voltage must exceed (2 × phase voltage peak + 30V).
🎛️ Front Panel & Interface
LED indicators · signal terminal definitions — clear and easy to use
💡 LED Indicators Front Panel
| Color | State | Meaning |
|---|---|---|
| Green | Steady | DC dispatch operation |
| 2s on / 1s off | AC dispatch or off-grid operation | |
| 0.5s blink | Standby, fault, shutdown, upgrade with CAN comm OK | |
| Red | Steady | Bus overvoltage, battery overvoltage, severe imbalance, ID duplicate, DSP/CPLD failure, relay fault, efficiency anomaly, soft-start fault, sampling fault, charging fault, output short, EPO fault |
| 0.5s blink | Fan fault | |
| Yellow | Steady | AC fault (over/under voltage, over/under frequency, reverse phase, phase loss, imbalance); islanding protection, output derating, battery undervoltage, overcurrent, DOD/EOD fault, bus anomaly, undervoltage, overtemperature, bridge overcurrent, auxiliary supply fault, EepromErr, calibration fault, ABU fault, output overload, internal overcurrent, grid voltage > bus voltage, HV/LV ride-through |
| 0.5s blink | DC CAN comm fault, AC parallel comm fault, SPI/SCI comm fault, charge voltage setpoint > protection value or < grid peak |
DIP switch: binary 8421, right = LSB, left = MSB; down = 0, up = 1. All internal modules must match; default = 1.
🔌 Signal Terminal Definitions J1–J6 & LAN
- J1 Grid sampling (A, B, C, N) — ABU controller grid voltage acquisition
- J2 Grid/off-grid bus / sync signal / CAN bus (off-grid parallel)
- J3 AC supply (L, N) — AC 220V power
- J4 DI active input (emergency stop, external LV switch feedback)
- J5 DO NC output / DI active input / DI passive input (charge/discharge inhibit, reserved)
- J6 RS485 (EMS/BMS) · CAN (BMS/debug) · termination resistor
- LAN Ethernet (EMS, alternative to RS485)
Power terminals: AC side A/B/C/N (3-phase 5-wire), DC side BAT+ / BAT-.
🔁 Electrical Topology & Working Modes
Bidirectional energy flow — grid-tied / off-grid / hybrid flexible switching
SPWM modulation · Grid-tied P/Q dispatch · Off-grid V/F · DC voltage 650–950Vdc · AC rated 380Vac
🛡️ Protection & Safety
Multi-layer protection — system and personnel safety
⚡ Electrical Protection
- AC over/under voltage protection (323–418Vac)
- DC over/under voltage protection (650–1000Vdc)
- Battery charge overvoltage protection (adjustable 650–1030Vdc)
- Battery EOD protection (adjustable 650–1000Vdc)
- AC short-circuit protection (manual reset required)
- Internal bus over/under voltage protection
🌡️ Thermal & Environment
- Ambient overtemperature protection (76°C)
- Internal overtemperature auto-shutdown
- Fan fault detection and alarm
- Potting process: salt spray, moisture, and mildew resistance
- Ingress protection IP20
- Forced air cooling with isolated duct
📡 System & Communication
- Communication interruption protection (≥30s shutdown)
- Automatic current sharing, imbalance ≤ 5%
- Dual-DSP redundancy for high reliability
- CAN, SPI, SCI communication fault protection
- Compliant with GB / CE / UL standards
- Manual reset: via monitoring or system power cycle
⚠️ Safety Note: Installation, operation, and maintenance must be performed by trained, qualified personnel using insulated tools. Measure voltage before touching any conductor surface. Do not wear watches, bracelets, rings, or other conductive items.
🔧 Installation & Use
Mounting dimensions · cable specifications · operating environment
📐 Mounting Dimensions
- Dimensions: 640mm × 640mm × 240mm (excluding handles & terminals)
- Mounting holes: 6 × R3.5 × 10mm oval slots, recommended M6 bolts
- Tolerance: >500mm ±1mm; ≤500mm ±0.5mm
- Weight: ≤ 80 kg
- Overvoltage category: II
- Pollution degree: II
🔌 Cable Connections
- Power cables: A/B/C/N 3-phase 5-wire, recommended 70mm²
- DC cables: BAT+ / BAT-, recommended 70mm²
- PE ground: recommended 10mm²
- Control cables: AC220V 2×1.5mm²; CAT6 shielded Ethernet; CAN/RS485 2×1.0mm² shielded
- Airflow: System exhaust ≥ 2 × 450 CFM
Operating conditions: Altitude < 2000m (derating above); temperature -20°C~+70°C (derating above 50°C); humidity ≤ 95% RH non-condensing; system airflow per thermal design; single module fan 450 CFM.
❓ Frequently Asked Questions
Common questions about BAC-1K0100-2
Q1 What operating modes does the BAC-1K0100-2 support?
It supports grid-tied (P/Q dispatch), off-grid (V/F), and hybrid modes. Grid-tied mode has no parallel limit; off-grid mode supports up to 10 units in parallel. Both AC dispatch and DC dispatch are available.
Q2 What is the overload capability?
At Ta ≤ 45°C: 0–110% load continuous; 110–120% load for 1 minute; ≥ 120% load for 200ms.
Q3 How do I reset the module after a fault?
Reset via monitoring system (fault clear command) or by power-cycling the module. Some faults (DC overvoltage, short circuit) require manual intervention after fault conditions are cleared.
Q4 What communication interfaces are available?
Two RS485 ports (EMS and BMS), CAN (BMS and debug), and Ethernet (LAN, EMS). J2 also provides parallel CAN bus for off-grid synchronization.
Q5 Is maintenance and replacement easy?
Yes, modular design with hot-swap support. Single module weighs only 24 kg — no need to disassemble the entire system. Just loosen the front screws, pull out the faulty module, insert a new one, and tighten. The monitoring system auto-recognizes the new module.
Q6 Can the module be used in non-battery applications?
Constant current and constant power modes are not recommended for non-battery applications, as load mismatch may trigger DC undervoltage protection. Please contact ImaxPWR support for specific use cases.
📦 Related Products
ImaxPWR energy storage and power conversion portfolio
🤝 Business & Service
Professional support · Custom solutions · Full lifecycle service
📞 Contact (WhatsApp / WeChat)
+86-13760212825 COCO
🏢 Company
Imax Power Technology Co., Ltd.
📧 Email
🛡️ Service Commitment
Warranty · After-sales · Technical Support · Customized Solutions
🔗 Quick Links
© 2026 Imax Power Technology Co., Ltd. · All rights reserved · imax-pwr.com
Data sourced from BAC-1K0100-2 125kW Energy Storage Converter User Manual V1.0
