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Selection Guide 4: How Battery Voltage Range Impacts Energy Storage System Design

Powering Progress with Innovation

Imax Power — Delivering Energy Solutions for a Better Tomorrow

CE | IEC 62477

MSP125HC 125kW ACDC
Energy Storage PCS

🔁 Non‑isolated bidirectional grid‑forming · seamless transfer · multi‑parallel ready

Technical Specifications
Parameter MSP100HC MSP125HC
⚡ Battery Parameters
Max Battery Voltage 950V 950V
Min Battery Voltage 680V 680V
Rated Battery Voltage Range 680V-900V 680V-900V
Max Battery Current 150A 200A
🔌 AC Side (Grid‑tied)
Rated Power 100kVA 125kVA
Rated Current 145A 181A
Rated Grid Voltage 400V/230V
Grid Voltage Range -20%~15%
Grid Frequency Range 50Hz/47Hz~52Hz (60Hz/57Hz~62Hz)
Current THD <3% (load >30%)
Power Factor -1~1
🔄 AC Side (Off‑grid)
Rated Output Power 100kVA 125kVA
Max Output Power 110kVA 137.5kVA
Rated Output Current 145A 181A
Max Output Current 160A 200A
Rated Voltage 400V/230V
Output Voltage THD <3% (resistive load)
Unbalance Factor 100%
Frequency Range 50/60Hz
Output Overload (Current) Ie*1.1 < Iload ≤ Ie*1.25: 100s
Ie*1.25 < Iload: 300ms
I: rated output current
📦 System Parameters
EMS:RS485 Supported
Communication Port Battery: CAN or RS485
DIDO DI:2 channels; DO:2 channels
Max Efficiency 98.5%
Mounting Type Plug‑in frame
Losses Standby <15W, No‑load power <200W
Weight ≤50kg
Dimensions (W*L*H) 440*720*200mm
Protection Rating IP20
Temperature Range -30~60℃ (derating >45℃)
Humidity Range 5-95%
Cooling Method Intelligent fan speed control
Altitude 4000m (derating >2000m)
Certifications CE, IEC62477, IEC6100, EN50549
📄 Source: Imax Power official datasheet

Core Advantages
⚡ Extreme Energy Efficiency
Standby ≤15W, no‑load loss <200W, up to 98.5% efficiency → drastically reduce energy waste.
🛡️ Rugged Protection
IP20 overall, isolated air duct design, wide temperature -30~60℃, safe in harsh environments.
🚀 Powerful Performance
150% overload (137.5kVA off‑grid), seamless grid‑to‑off‑grid transition <10ms.
🔧 Flexible Configuration
Supports generator hybrid, up to 15 units parallel, 3‑phase independent grid control.

Product Features
🔹 High Efficiency & Reliability
  • Standby <15W / No‑load <200W
  • 98.5% peak efficiency
  • IP20 + isolated duct
  • 150% overload capacity
  • Seamless transfer <10ms
🔸 Versatile & Flexible
  • Generator hybrid mode
  • 3‑phase independent grid control
  • HVRT/LVRT, anti‑islanding, black start
  • Up to 15 units parallel (AC side)
  • C&I parks, islands, farms, villas

Grid‑forming & Smart EMS
🧠 Grid‑forming Control
Advanced grid‑forming capability supports weak grids and island operation; actively builds voltage/frequency reference.
📡 Smart EMS Integration
Compatible with CAN/RS485, BMS handshake, remote monitoring and data logging reduce O&M costs.

Typical Applications
🏭 Small C&I parks
🏝️ Island microgrids
🌾 Farm modernization
🏡 High‑end villas
⚡ PV‑storage‑charging
🔋 Battery second‑life
📡 Telecom base stations
🔀 Distribution grid flexible interconnection

Topology & Operating Modes
🔀 Non‑isolated bidirectional topology
High power density, 98.5% efficiency, low conduction losses. Modes: PQ (grid‑tied), VF (off‑grid), hybrid, generator‑assist.
📐 System connection diagram
PV array → MPPT / battery ↔ MSP125HC ↔ AC bus (loads/grid/genset)
DC‑ready15‑unit parallel

Protection & Safety
🔐 4‑level protection
  • Grid: HVRT/LVRT, anti‑island, reverse power
  • Device: OVP/UVP, OFP/UFP, OCP, OTP
  • Battery: reverse polarity, insulation monitoring
  • Environmental: isolated duct, -30~60℃
✅ Compliance
  • CE, IEC62477, IEC61000, EN50549
  • Islanding detection, black start
  • Fault logging and diagnostics

FAQ
What is the max number of parallel units?
Up to 15 units on AC side (grid‑tied or off‑grid) → MW scale.
Grid‑to‑off‑grid transfer time?
<10 ms – no interruption to critical loads.
Does it support black start?
Yes, full black start capability.
Can it run with diesel generators?
Built‑in generator hybrid mode, seamless coordination.

Related Products
MSP100HC
MSP100HC
100kVA / 150A / 98.5% / plug‑in frame

View →

MSP50HC
MSP50HC
50kVA / 100A / compact / parallel ready

View →

MSP250HC
MSP250HC
250kVA / high current / C&I storage

View →

* Based on Imax Power product line; consult datasheet for details.

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