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7.5kW Inverter for air compressor INVT inverter GD300-01A-7R5G-4-RT
GD300-01A-RT series air compressor single frequency conversion all-in-one machine is a single frequency conversion all-in-one machine newly developed by INVT for the air compressor industry. This inverter adopts a compact structure design and integrates air compressor-specific control logic. It can directly access various forms of signals such as emergency stop, pressure, temperature, and fault of the air compressor; it integrates exclusive solenoid valve terminals and can directly drive the solenoid valve; it is used in conjunction with INVT's air compressor-specific touch screen, without the need for an external controller or PLC, to achieve the "one screen and one frequency conversion" control solution of the air compressor, while greatly simplifying the design of the air compressor electrical system and achieving perfect frequency conversion control of the air compressor.
Power range: three-phase 380V (-15%) ~ 440V (+10%) 7.5~37KW
Product feature
1. The main engine and oil temperature fan are integrated.
2. Compatible with asynchronous/synchronous motor drive.
3. Special logic design for air compressor, simple debugging.
4. Plug-in and anti-misplug terminal design, simple and easy to use.
5. 120% high overload capacity.
6. Intelligent fault and alarm handling strategy.
7. Compact structure design, more convenient installation.
| Category | Function | Specifications |
| Power input | Inverter input voltage (V) | 3-phase 380V(-15%)~440V(+10%) |
| Rated input current(A) | Please refer to Product Ratings | |
| Rated input frequency (Hz) | 50Hz or 60Hz, the allowed range is 47~63Hz | |
| Variable frequency power output | Output voltage (V) | Equal to input voltage, error less than 5% |
| Rated output current (A) | Please refer to Product Ratings | |
| Rated output power (kW) | Please refer to Product Ratings | |
| Output frequency (Hz) | 0~250Hz | |
| Industrial frequency fan output (single frequency conversion integrated machine) | Output voltage (V) | Equal to input voltage, error less than 1% |
| Rated output current (A) | Please refer to Product Ratings | |
| Rated output power (kW) | Please refer to Product Ratings | |
| Output frequency (Hz) | Equal to input frequency, error less than 1% | |
| Power Output | 24VDC | 24W |
| 220VAC | 15W | |
| Operation control performance | Control mode | Open loop vector, space voltage vector |
| Speed ratio | Asynchronous machine 1: 200 (SVC), synchronous machine 1: 20 (SVC) | |
| Speed control accuracy | ±0.2% (SVC) | |
| Speed fluctuation | ±0.3% (SVC) | |
| Torque response | <20ms (SVC) | |
| Starting torque | Asynchronous motor 0.25Hz 150% (SVC) | |
| Synchronous motor 2.5Hz 150% (SVC) | ||
| Frequency setting mode | PID control setting, Modbus communication setting, P1 analog input setting, keyboard digital setting | |
| Overload capacity | 120% long-term operation | |
| Pressure analog input | 1 channel 4~20mA/0~1.6MPa input | |
| Temperature analog input | 2-way PT100 temperature analog input, resolution 1°C, temperature range -20°C~150°C, accuracy error: 3°C | |
| Digital input | 3 normal inputs, maximum frequency 1kHz; | |
| 1 PTC switch input | ||
| Digital output | 1-way Y terminal output | |
| Relay output | 1 relay output (normally open) 250VAC/3A | |
| 1 solenoid valve output | ||
| Fault protection function | Provides more than 30 fault protection functions: overcurrent, overvoltage, undervoltage, overtemperature, phase loss, overload, fan current imbalance, etc. | |
| Fan protection function | Overload protection: 120% overload 60s, 130% overload 48s, 150% overload 24s, 160% overload 8s, 200% overload 5s, 300% overload 1s | |
| Current imbalance protection: When the current difference between any two phases is 60~75%, the fault will stop, and the action time is ≤5s | ||
| Output short circuit protection: internal fuse can protect | ||
| Output short circuit protection to ground: internal fuse can protect | ||
| Solenoid valve port protection | 220V output short circuit protection | |
| Communication 485 | 1-way 485 communication | |
| Other | Installation method | Wall mounting, flange mounting |
| Operating environment temperature | -10~50ºC, derated for use above 40ºC, 1% derated for every 1ºC increase | |
| Protection level | IP20 | |
| Pollution level | Level 2 | |
| Cooling method | Forced air cooling | |
| EMC filter | Optional external filter: meets IEC61800-3 C2 level requirements |
1.Packing Details: Plywood crate pallet plus foam board and bubble film, Full closed wooden case. 1pcs/each package (for stationary screw air compressor)
2.Shipping method: by sea, by LCL/FCL or as requested
3.Delivery method: FOB, CFR, CIF and EXW etc.
4.Delivery time: in 7-15 days after receiving deposit (customized machines not included)
Shanghai Rocky Machinery Co., Ltd. was established in 2003 and has 18 years of experience in the air compressor industry. It is an innovative enterprise integrating production, trade, service, research and development.
We are professional gas compressors manufacturer since 2003, Germany standard, more than 100 workers, annual sales exceeding 20 million US dollars with 13 years of exporting experience, strict quality control and delivery on time. We not only supply gas compressor including screw air compressor, but also supply spares parts and after-treat machines.
Our main products series as follows.
2. Dry Oil-free Screw air compressor
3. Oil-free water lubricated screw air compressor
4. Oil-free scroll air compressor
5. Oil-free/Oil-lubricated piston compressor
6. Mobile Screw air compressor( Motor driven/ Diesel engine driven)
7. Oxygen/Nitrogen generators/boosters
8. High Pressure Breathing Air Compressor
9. Refrigerant air dryer/ Desiccant air dryer
10. Precision line filter/ water separator
Rocky will continue to promote technological innovation and progress in line with the mission of "innovation reflects value", and achieve win-win results with global partners, suppliers and employees. Create a new world of "energy saving, envir-onmental protection and intelligence" in the field of air compressors.
Q1. Are you trading company or manufacture ?
A: We are professional manufacture of screw air compressor of Taicang,Jiangsu,China. More than 18 years of experience in air compressor manufacturing.
Q2. How long is the delivery time ?
A: For standard voltage ,15 working days. Non-standard ,please contact our sales.
Q3. What's payment term ?
A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
Q4. How about your after-sales service ?
A: 1.Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service.
3.Worldwide agents and after service avaiable.arrange our engineers to help you training and installation.
Q5. How about your warranty?
A: One year for the whole machine and two years for screw air end, except consumable spare parts.
Q6. Do you have any certificate ?
A: Yes, per different customer's market need ,we can offer CE ,ISO etc certificate.
Q7. What about the maintenance ?
A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q8. How do you control quality ?
A: 1. The raw materials are strictly inspected
2. Some key parts are imported from overseas
3. Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
Q9. Do you offer OEM service ?
A: Yes.Both OEM & ODM service can be accepted.
Q10.How long could your air compressor be used?
A: Generally, more than 10 years.
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