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GRT-VFDC series inverter voltage drop DC bus protection device is an efficient energy management system specially designed for inverter.It adopts advanced super capacitor technology, which can quickly compensate the DC bus voltage and prevent the inverter from shutting down in case of short-term utility power failure or voltage dips. The device has a built-in high-precision voltage monitoring circuit, which monitors the utility and DC bus voltage in real time to ensure the system's rapid response to voltage changes. The intelligent control system adopts advanced algorithms to ensure that the charging and discharging process of the supercapacitor is accurately controllable, avoiding over-discharging and charging and extending the service life of the device. Its functions also include status monitoring and alarm, data recording and analysis, and remote monitoring and management. This system not only has significant advantages in terms of stability, reliability and continuous operation performance of the inverter, but also reduces the maintenance cost and downtime of the system, and improves productivity and equipment utilization. Therefore, it has a wide range of application prospects in the field of industrial automation, and is an ideal choice for improving the stability and efficiency of production lines.
Application Industry
Semiconductor industry
automobile manufacturing industry
iron and steel manufacturing industry
petrochemical industry
chemical fiber printing and etc industry
manufacturing industry
real estate industry and industrial and commercial industry,
hospital and pharmaceutical industry
The DC energy storage unit directly supplies power to the inverter, making it a seamless power supply, which is extremely cost-effective compared to traditional solutions.
The system response time is 0.8~2ms, voltage dips and loss of voltage protection is more safe and reliable.
Intelligent control, the system is equipped with intelligent monitoring and control functions, which can automatically adjust the working status in different situations.
Reliable protection against overcurrent and voltage abnormality through resistor R1 in the precharge circuit and an alarm mechanism to ensure system safety.
Support cloud platform based on B/S architecture, users can conveniently realize data query and analysis through the browser. Support GPRS wireless communication and RS485 serial communication.
Battery free, light weight, small size, no noise, no maintenance.
Bypass function, device exit without affecting power supply.
| Main Module | Module Functions |
| current limiting module | Capacitor module charging current limiting unit providing two charging modes |
| Monitoring Module | Device analog acquisition, control unit and parameter setting |
| capacitor module | Equipment energy storage units |
| Serial No. | Item | Technical indicator | Unit | Remark |
| 1 | Operating temperature | -20 ~ +45 | ºC | / |
| 2 | Storage temperature | -20 ~ +60 | ºC | / |
| 3 | Operating humidity | 5 - 90 | % | (non-condensing) |
| 4 | Operating altitude | 0 - 1000 | m | / |
| 5 | Cooling type | Natural air-cooled | / | / |
| Model | Size (kVA) | Dimensions W*D*H(mm) | ||
| GRT-VFDC-T4030 | 30 | 600*600*1200 | ||
| GRT-VFDC-T4050 | 50 | 600*600*1800 | ||
| GRT-VFDC-T4100 | 100 | 800*800*2000 | ||
| GRT-VFDC-T4200 | 200 | 1200*800*2000 | ||
| Technical Parameter | ||||
| Wiring Mode | Three-phase four-wire | |||
| Rated input voltage | 380VAC | |||
| Rated input frequency | 50Hz | |||
| Operating voltage range | 0-456VAC (after startup is complete) | |||
| Output voltage | 537VAC(typical) | |||
| Compensation threshold | 456V(Recommended range 430-483V) | |||
| Recovery threshold | 510V(Recommended range 510-530V) | |||
| Applicable capacity | 30KVA,50KVA,100KVA,200KVA | |||
| Response time | < 2ms | |||
| Single compensation (max.) | 1S | |||
Shenzhen Great Energy Technology Co., Ltd. ,established in 1998,mastering the core technology of power electronics, is the core device and solution provider in the power transmission and distribution system.in the field of power quality, energy storage and customized power supply have reached the world-leading level.
Our products are used in all provinces in China, and exported to other countries, widely serving power,communications, transportation, petrochemical, semiconductor,automotive industry,new energy and other industries.products and solutions have been applied to power supply systems of TCL CSOT,MRT,Shenzhen International Airport,Huawei,BOE,Volkswagen,Nissan,PINGAN IFC,TIANMA.
Great energy Technology has passed the CE,ISO9001, ISO14001, ISO45001, and has won the honorary titles of national high-tech enterprise, "Specialized and Special new" Enterprises in Shenzhen.
