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China Suppliers Factory 100KT 110KT 125KT Power Conversion System Inverter for AC/DC Dual Backup Auxiliary Power Supply
Power Conversion Inverter (PCS)
The core equipment in an energy storage system and is often referred to as the "brain" of the system. Its main function is to convert power between alternating current (AC) and direct current (DC), enabling the control and dispatch of electrical energy.
Key Functions
AC/DC Conversion (Rectification/Inversion)
Charging (AC → DC): Converts excess grid or PV inverter AC power into DC electricity to store in batteries.
Discharging (DC → AC): Converts battery DC power into AC power to supply the grid or local electrical loads.
Grid-Tied and Off-Grid Operation
Enables the energy storage system to dynamically switch between grid-tied mode (connected to the utility grid) and off-grid mode (operating independently, e.g., in a microgrid) as needed.
System Features & Capabilities
- EMS Smart Energy Management: Integrated intelligent management system.
- Operating Modes: Configurable off-grid, grid-tied, and grid charging modes.
- Smart Interface: Equipped with an LCD smart touch screen display.
- Dual Backup: AC/DC dual backup for auxiliary power supply.
- Load Control: Advanced control technology for unbalanced loads.
- Communication: Standard RS 485 Modbus RTU protocol.
- Remote Control: Optional WIFI/LAN remote monitoring and control app.
- Static Transfer Switch: Optional STS support for Grid-Tie/Off-Grid applications.
Technical Specifications
| Model | Mars-125KT | Mars-110KT | Mars-100KT |
| DC Side Parameters | |||
| Maximum DC voltage | 1,000V | 1,000 V | 1,000v |
| Minimum DC voltage[1] | 580V | 580V | 580V |
| DC voltage operating range | 350-1000 V | 350-1000V | 350-1000v |
| Maximum DC current | 216A | 190A | 173A |
| AC Side Parameters (Grid-Connected) | |||
| Rated charging/discharging power | 125kW | 110kW | 100kw |
| Maximum charge and discharge power | 150kW | 132kW | 120kw |
| Rated charge and discharge current | 182A | 160A | 145A |
| Maximum charge-discharge current | 217A | 192A | 174A |
| Rated grid voltage | 400V | 400V | 400V |
| Permissible grid voltage range | 300-460 V | 300-460 V | 300-460v |
| Rated grid frequency | 50Hz/60Hz | 50Hz/60Hz | 50Hz/60Hz |
| Current total harmonic distortion rate | <3% (at rated power) | <3% (at rated power) | <3% (at rated power) |
| Power factor | > 0.99 | > 0.99 | >0.99 |
| Power factor range | -1~1 | -1~1 | -1~1 |
| Overload capacity | 1.2 Pn, continuous for 1 minute | 1.2 Pn, continuous for 1 minute | 1.2 Pn, continuous for 1 minute |
| AC Side Parameter (Off-Grid) | |||
| Rated input voltage | 400V | 400V | 400V |
| Voltage deviation | ±2% | ±2% | ±2% |
| Total harmonic distortion rate | <3% (linear load) | <3% (linear load) | <3% (linear load) |
| Efficiency | |||
| Maximum efficiency | 98.9% | 98.9% | 98.9% |
| Protection | |||
| DC reverse polarity protection | Supported | Supported | Supported |
| AC short-circuit protection | Supported | Supported | Supported |
| AC output overcurrent protection | Supported | Supported | Supported |
| Surge protection | Level 2 | Level 2 | Level 2 |
| Insulation resistance monitoring | Supported | Supported | Supported |
| Temperature protection | Supported | Supported | Supported |
| Basic Parameters | |||
| Topology | Without transformer | Without transformer | Without transformer |
| Ambient temperature | -40℃ ~ +60℃ | -40℃ ~ +60℃ | -40℃ ~ +60℃ |
| Protection level | IP20 (module & battery integrated solution, system level IP54 or above) | IP20 (module & battery integrated solution, system level IP54 or above) | IP20 (module & battery integrated solution, system level IP54 or above) |
Frequently Asked Questions
What is a Power Conversion System (PCS) inverter? ▼
A Power Conversion System (PCS) inverter acts as the "brain" of an energy storage system. It is responsible for bidirectional AC/DC power conversion, allowing energy to flow from the grid/PV system to charge the batteries, and from the batteries back to power the grid or local loads.
Does the Mars series support both grid-tied and off-grid operations? ▼
Yes. The Mars series (125KT, 110KT, 100KT) supports multiple configurable operating modes including off-grid, grid-tied, and grid charging. Additionally, you can add an optional Static Transfer Switch (STS) to facilitate seamless switching between grid-tied and off-grid applications.
What are the main protection features integrated into this PCS? ▼
The system features comprehensive built-in protection mechanisms including DC reverse polarity protection, AC short-circuit protection, AC output overcurrent protection, Level 2 surge protection, insulation resistance monitoring, and temperature protection.
What is the conversion efficiency of the Mars series inverter? ▼
All models in this series (Mars-125KT, Mars-110KT, and Mars-100KT) feature a high maximum conversion efficiency of 98.9% without a transformer.
What monitoring and smart management protocols are supported? ▼
The system is equipped with an EMS smart energy management system, an LCD smart touch screen display, and uses the standard RS 485 Modbus RTU protocol. Optional WIFI/LAN remote monitoring and control apps are also available for remote operation.
What is the protection level and environmental tolerance of this system? ▼
The internal modules have an IP20 protection level, but when integrated with the battery pack solution, the system-level protection reaches IP54 or above. It can operate in ambient temperatures ranging from -40℃ to +60℃.
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