Wattox MPCS-1250-S
A high-performance 1250 kW power conversion system designed for stable, efficient, and grid-compliant energy storage operations across utility-scale applications.

Key features
High-efficiency power conversion
Advanced conversion architecture maximizes energy efficiency and minimizes losses, ensuring consistent performance across demanding operating conditions.
Grid-forming stability & control
Enables stable operation in both grid-connected and off-grid scenarios, supporting reliable energy flow and system resilience.
Smart system integration
Seamlessly integrates with energy management and storage systems, enabling efficient communication and coordinated control across the infrastructure.
Advanced protection & reliability
Built-in protection mechanisms and intelligent diagnostics ensure safe, stable operation and long-term system reliability.
Scalable system architecture
Flexible system design allows multiple units to operate together, supporting easy expansion and adaptation to evolving project requirements.
Optimized thermal management
Efficient cooling design maintains stable performance and extends system lifespan under continuous high-load operation.
Technical specifications
Maximum DC voltage
1500 V
Operating DC voltage range
1000 – 1500 V
Maximum DC current
1403 A
Number of DC input channels
1
Rated power
1250 kW @ 45°C
Maximum output power
1375 kVA @ 30°C
Rated grid voltage
690 V
Mains voltage range
621 - 759 V (standard)
Rated network frequency
50 Hz
Current THD
< 3% (reactive power)
Reactive power range
-1.05 (capacitive) ~ +1.05 (inductive)
Power factor
-1 (leading) ~ +1 (lagging)
AC connection type
3-phase, 3-wire
Rated AC voltage
690 V
Rated output frequency
50 Hz
Voltage variation
<1% (linearly balanced load)
Voltage THD
<3% (linear load)
Interfaces
RS485/CAN (BMS Interface), Ethernet (EMS Interface)
Protocols
Modbus-RTU, Modbus-TCP, IEC 61850, IEC 104
Maximum Efficiency
99
Cooling method
Liquid-cooled
Ambient temperature
-30°C ~ +60°C (derating >45°C)
Relative humidity
0% – 100% (non-condensing)
Cable entry direction
DC cable from the front bottom, AC cable from the front bottom
Dimensions (W×D×H)
700 x 1400 x 2300 mm
Weight
< 1300 kg
Max. operating altitude
4000 m (derating above 2000 m)
Protection class
IP65
Standards
EN-55011, IEC-61000-6-4/2, IEC62477-1, EN-50549-2
Resources
Datasheets
User manual
Certificates
For full technical documentation, user manuals, and additional resources, please visit our Librarypage.
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