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CPS-1250 / CPS-2500 Energy Storage Inverters

Industry-Leading Power Density and Configuration Flexibility

CPS 1250-2500

Featuring a highly efficient three level topology, the CPS-1250 and CPS-2500 inverters are purpose-built for energy storage applications, providing the perfect balance of performance, reliability, and cost-effectiveness.

The CPS-1250 and CPS-2500 are 1336 kVA (CPS-1250) and 2672 kVA (CPS-2500) bidirectional four quadrant capable converters. Both the CPS-1250 and CPS-2500 offer AC input voltage from 350VAC to 800VAC and DC voltage range from 511VDC to 1500VDC. Available in indoor and outdoor-rated configurations, units can be paralleled for project size scaling to meet the needs of any grid-tied or microgrid application.

Capable of connecting to an 800VAC 3 phase grid connection, the CPS-1250 and CPS-2500 offer industry-leading power density and efficiency. The CPS-2500 allows DC input configuration flexibility to enable large duration battery connections or reduce balance of system costs through input consolidation.

CPS inverters contain all required protective features, including an AC output breaker and DC pre-charge. This creates a cost savings compared to other inverters that require additional items for battery integration.

System Advantages

Certified to UL 1741 Ed. 3, including SB smart inverter requirements

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Scalable to any grid-tied or microgrid application with paralleled units
Seamless transfer from grid-tied to stand-alone mode with patented Dynamic Transfer feature

Downloads & Links

Want to learn more about CPS-1250 / CPS-2500 Energy Storage Inverters? Check out our product information below for technical specifications and other essential product information.

CPS-1250 / CPS-2500 Energy Storage Inverter Datasheet
CPS-1250 and 2500 Datasheet thumbnail

Key Technologies 

Select an item below to view more information

The CPS includes the ability to run islanded mode (voltage source) operation, also called UF mode. In islanded mode, the CPS accepts Voltage (U) and Frequency (F) setpoints. The CPS can handle full real power transitions with extremely tight voltage and frequency regulation forming a ‘stiff backbone’ to the microgrid.

Dynapower’s proprietary Dynamic Transfer™ algorithm monitors grid stability and, upon detecting a grid disturbance, disconnects from the grid and transitions to stand-alone battery backup power mode on the load connection. The transition is seamless to the critical loads and supports 100% phase imbalance in UF mode.

In the event of a complete system power outage, our patented black start restores power to the facility without the need for external power. Dynapower’s black start technology can start distribution networks even with transformer magnetizing currents that exceed the power rating of the inverters. Multiple CPS® units can be restarted at once.

F-Comp monitors the grid frequency for deviations from nominal, and if a deviation exceeds a max allowed, the CPS will automatically follow a user-defined frequency correction curve. F-Comp is ideally suited to very rapid Fast Frequency Regulation applications as well as power quality correction of critical facility loads.

E-Comp monitors the grid voltage for deviations from nominal and automatically attempts to correct three-phase voltage magnitude deviations (usually voltage sags) experienced by a critical load in an effort to avoid the need to transfer to backup power mode. 

The CPS has AC current limiting, so that the system will deliver up to (but not exceed) full rated AC current to avoid nuisance AC overcurrent faults due to excessive load inrush current demand. When current limiting in UF, the AC voltage and frequency may deviate from nominal and this is permissible within the CPS abnormal voltage frequency limits and timers. It is expected that, if the system is properly sized to the microgrid, any voltage or frequency deviations due to large inrush loads will be very minor and short duration, and not affect the load.

In the event the grid experiences a voltage sag, the CPS will enter into low voltage ride-through operations to maintain proper AC voltage connection. The CPS inverter will enter either Momentary Operation, where the converter supplies at least 80% active current command, or Momentary Cessation, where the converter ceases to export active current but does not fault. The trip levels and trip times for the LVRT settings are configurable by the end user and meet the requirements for IEEE 1547.

The CPS has the ability to control a large microgrid with many inverter systems. Our technology supports black start, AC current limit, and droop control.

System Overview

Rated AC Power
CPS-2500
  • 2,672 kVA (@800VAC)
  • 2,304 kVA (@690VAC)
  • 2,204 kVA (@660VAC)
  • 2,104 kVA (@630VAC)
  • 2,004 kVA (@600VAC)
  • 1,803 kVA (@540VAC)
  • 1,603 kVA (@480VAC)
  • 1,386 kVA (@415VAC)
  • 1,169 kVA (@350VAC)
CPS-1250
  • 1,336 kVA (@800VAC)
  • 1,152 kVA (@690VAC)
  • 1,102 kVA (@660VAC)
  • 1,052 kVA (@630VAC)
  • 1,002 kVA (@600VAC)
  • 902 kVA (@540VAC)
  • 802 kVA (@480VAC)
  • 693 kVA (@415VAC)
  • 585 kVA (@350VAC)
DC Voltage Range
  • 511-1500VDC (@350-800VAC)
Certifications & Standards Compliance
  • UL 1741 Ed. 3 (including SB smart inverter requirements)
  • IEEE 1547
  • CSA 22.2 #107.1
  • IEEE 519
  • CEC Listed
Hardware Protections
  • AC Breaker with Shunt Trip
  • AC Surge Protection
  • DC Input Fuses
  • DC Pre-Charge
Applications
  • Solar Plus Storage
  • Microgrids
  • Standalone Energy Storage
  • Hydrogen Production
  • EV Charging + Storage

FAQs

The Gen5 CPS inverters feature:

  • Industry-leading response time (0 to full power in 70ms)
  •  Exceptional power density (8.9W/in³)
  •  Greater flexibility in AC and DC voltage ranges

Up to three CPS inverters can be paralleled together to achieve project scaling for most grid-tied or microgrid applications. This is achieved through control algorithms that enable multiple inverters to work together efficiently within a microgrid.

The CPS system offers both parallel DC port configurations and isolated individual DC port configurations. This flexibility helps users either reduce balance of system costs (particularly beneficial for projects with short duration batteries of 2 hours or less) or mitigate extreme fault currents (helpful for battery systems with durations greater than 2 hours).

Yes. The CPS product line’s patented Dynamic Transfer technology enables backup power for critical loads while minimizing load disruptions and blackouts during transitions from grid power to battery power and back to grid power, whether commanded or triggered by faults.

The CPS inverters incorporate Black Start algorithms that enable the inverter to mitigate large inrush current typically seen during large microgrid energization, making them ideal for starting up large microgrid systems.

The high degree of flexibility in the AC and DC voltage ranges allows for integration with a wide variety of battery and alternative DC source technologies. The inverters have been qualified for non-curtailed operation even at maximum 1500Vdc in both charge and discharge directions.

Yes. The flexibility in DC voltage ranges and port configurations allows for integration with various DC sources, including renewable energy systems, like wind and solar—making these inverters suitable for hybrid renewable energy and storage applications.

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