GS Automatic PMA series energy storage converter adopts modular design. It supports power module independent operation and parallel operation.
PM modular series - PMA model
GS Automatic’s power conversion system features a modular design, supporting both independent and parallel operation, which delivers flexible expansion, enhanced reliability, and simplified maintenance.
PMA series energy storage converter adopts modular design. It supports power module independent operation and parallel operation. The flexible power conversion system configuration is easy to use, suitable for on-grid small-scale industrial and commercial applications.

Leading three-level space vector modulation SVPWM with wide voltage range charging and discharging for parallel operation of multiple machines.
Leading midpoint balance technology, with DC component adjustment and low-frequency pulse current in the bypass bus, can prolong battery life and improve unbalanced and nonlinear adaptability.
Intelligent electrical protection with fault isolation and fast breaking.
Multiple safety protection with SPD ISO GFCI monitoring function and intelligent electrical protection linkage.
Standard power capacity modules are adapted to standard energy storage cell clusters.
19-inch 3U standard size design, support horizontal/vertical installation.
Technical Specifications
| Model | PMA0050 | PMA0060 |
| Parameters for DC side | ||
| Max. DC continuous power (kW) | 55 | 69 |
| Operating DC voltage range (Vdc) | 590~950(3W+PE) | |
| Full load DC voltage range (Vdc) | 600~900(3W+PE) | |
| Max. DC current (A) | ±100 | ±125 |
| Max.DC continuous current | ±92 | ±115 |
| Stabilized voltage precision | ±1% | |
| Stabilized current precision | ±2% (Of rated power) | |
| Parameters for AC side(on-grid) | ||
| Rated active power (kW) | 50 | 62.5 |
| Max. apparent power (kVA) | 60 | 75 |
| Max. continuous apparent power (kVA) | 55 | 69 |
| Grid type | 3W+PE | |
| Rated AC voltage (V) | 400 | |
| Rated AC current (A) | 72 | 90 |
| Max. AC current (A) | 86 | 110 |
| Max. AC continuous current (A) | 79 | 99 |
| THDi | <3% (Of rated power) | |
| Grid voltage range (V) | 400±15% (According to load standards) | |
| Grid frequency range (Hz) | 50±5 / 60±5 (According to load standards) | |
| Adjustable power factor range | >0.99; -1~ +1 | |
| Communication parameters | ||
| Human-computer interaction | 10.1" Touch screen / Local web / Upper computer (Optional) | |
| Communication interface | Ethernet/RS485/CAN | |
| Communication with BMS | RS485/CAN (Optional) | |
| Communication with EMS | RS485/Ethernet (Optional) | |
| General | ||
| Max. efficiency | 98.5% | |
| Charge/discharge switching time (ms) | <20 | |
| Relative humidity | <95% (Non-condensing) | |
| Operating temperature range (℃) | -30~+60 (>45 Derating) | |
| Storage temperature range (℃) | -40~+70 | |
| Max. operating altitude (m) | 5,000 (>3,000 Derating) | |
| Noise emission (dB) | <70 | |
| Pollution degree | External PD3; Internal PD2 | |
| Over voltage category | DC type II / AC type III | |
| Protection degree | IP20(Power compartment) IP5X(Control compartment) | |
| Cooling | Intelligent forced air-cooling | |
| DC connector | Quick connector(Support hot plug) | |
| AC connector | Quick connector(Support hot plug) | |
| Installation style | Rack-mounted (Vertical/horizontal) | |
| Dimension W*D*H (mm) | 483(Without mounting ears 444)*550*133 19"3U | |
| Weight (kg) | 38 | |
| Standards compliance | ||
| Grid connection standard | EN50549-1, EN50549-10, GB/T34120, GB/T34133 | |
| Safty standard | EN62477-1, EN62109-1, EN62109-2 | |
| EMC standard | EN IEC61000-6-2, EN IEC61000-6-4 | |
Featuring the world's first buck-boost technology, it boasts an ultra-fast protection response time of ≤3ms, a wide DC voltage range of 250-1000V.
GS Automatic PMAE series modular converter is designed for on-grid application, the product adopts pre-assembled standard cabinet design, which consists of PMA standard power module, electrical distribution, 10-inch smart screen, EPO switch, etc.