Chint NVF2G-5.5/TS4 converter

Chint NVF2G-5.5/TS4 is a high-performance general-purpose (constant torque) frequency converter, specially designed for industrial drive control. It is compatible with 5.5kW three-phase asynchronous motors, supports three-phase 380V (±15%) input, and has an output frequency range of 0~400Hz. The following is a detailed analysis of key information:

**I. Core Technical Parameters*Chint NVF2G1.5/PS4 frequency converter*

1. **Control Performance**  

   - **Sensorless Vector Control**: It can output 150% rated torque at 0.5Hz, suitable for scenarios such as lifting and conveying that require high starting torque.  

   - **Overload Capacity**: 150% rated current for 1 minute, capable of handling short-term impact loads.  

   - **Speed Regulation Accuracy**: Speed fluctuation ≤ ±0.5% under sensorless vector control, and V/F control accuracy ≤ ±1%.

2. **Input and Output Characteristics*Chint converters (NVF2G-18.5/TS4 or NVF2G-18.5/PS4)*  

   - **Voltage Range**: 380V±15% (i.e., 323~437V), adapting to environments with large grid fluctuations.  

   - **Frequency Range**: Output frequency 0~400Hz (0~120Hz for fan and pump type), supporting multi-speed operation and PID closed-loop control.  

   - **Brake Unit**: Models below 22kW are equipped with a built-in brake unit as standard. The 5.5kW model falls into this range, so no additional selection is required.

3. **Interfaces and Functions**  

   - **Digital Input**: 6 programmable terminals, supporting functions such as forward/reverse rotation, jogging, and fault reset.  

   - **Analog Input/Output**: 2 analog inputs (0~10V/0/4~20mA) and 2 analog outputs, which can be connected to sensors for precise control.  

   - **Communication Protocol**: Standard RS485 interface, supporting Modbus protocol, facilitating remote monitoring and networking.

**II. Application Scenarios**

1. **Industrial Field**  

   - **Constant Torque Loads**: Such as cranes, conveyors, injection molding machines, etc. Precise speed regulation and energy saving can be achieved through vector control.  

   - **Fan and Pump Loads**: Although it is a general-purpose type, it can adapt to light-load scenarios through V/F control and automatically optimize energy consumption.

2. **Adaptability to Harsh Environments**  

   - **Protection Technology**: Adopting three-proof paint spraying, it can resist dust, oil stains, and mild corrosive gases.  

   - **Wide Temperature Operation**: No derating at ambient temperature -10~+45℃; for 45~50℃, derate by 1% for each 1℃ increase.

**III. Installation and Maintenance**

1. **Environmental Requirements**  

   - **Humidity and Altitude**: Relative humidity ≤ 90% without condensation; full power operation below 1000m altitude; for each 1000m increase above 1000m, derate by 10%.  

   - **Vibration and Heat Dissipation**: Avoid installation in places with vibration > 5.8m/s². It is recommended to install vertically and reserve 120mm heat dissipation space.

2. **Maintenance Points**  

   - **Replacement of易损件**: Cooling fans and electrolytic capacitors are the main易损件, and it is recommended to check them every 2~3 years.  

   - **Fault Diagnosis**: Built-in more than 20 protection functions (overcurrent, overheating, phase loss, etc.), and the LED panel displays fault codes in real-time.

**IV. Adaptability to the North American Market**

1. **Certification and Compliance**  

   - Although UL/CSA certification is not clearly marked, some Chint products have passed third-party tests. It is recommended to contact North American technical support to confirm the compliance of specific models.  

   - **Power Grid Compatibility**: The input voltage range covers the North American 380V standard and can be directly connected to the industrial power grid.

 **V. Price and Procurement**

1. **Reference Price**: According to the platform of Whatsapp: 0086-13811255435, the price of NVF2G-5.5/TS4 is approximately **1400~2000 RMB**, which varies depending on channels and quantities.  

2. **North American Procurement**: It is recommended to obtain quotations through Chint's authorized North American distributors. Some models may need to be pre-ordered, with a delivery cycle of 2~8 weeks.

 **VI. Alternative Solutions and Upgrades**

If higher performance or compliance with North American standards is required, Chint's **NVF3 series** or **NVF5 series** frequency converters can be considered, which support higher protection levels (IP55) and more communication protocols (such as Profibus). The specific alternative models need to be selected according to application requirements.

**Summary**

NVF2G-5.5/TS4 has become a mainstream choice in the industrial drive field due to its high cost performance, wide voltage adaptability, and strong overload capacity. For North American users, although certification details need to be confirmed, Chint's global service network and local support can provide reliable guarantees. It is recommended to communicate with distributors according to specific application scenarios to obtain customized solutions.

The detailed technical parameters of Chint NVF2G-5.5/TS4 frequency converter are as follows:

 **I. Electrical Performance Parameters**

1. **Input Characteristics**  

   - **Voltage Range**: Three-phase 380V±15% (323~437V), supporting North American industrial power grids.  

   - **Frequency Range**: 47~63Hz, adapting to global mainstream power grid fluctuations.  

   - **Rated Input Current**: 4A (compatible with 5.5kW motor).  

   - **Power Factor**: Typical value ≥ 0.95 (optimized by built-in reactor).

2. **Output Characteristics**  

   - **Rated Output Power**: 5.5kW, compatible with 4-pole three-phase asynchronous motors.  

   - **Output Current**: 13A (continuous operation), with overload capacity of 150% rated current for 1 minute.  

   - **Frequency Range**: 0~400Hz (general-purpose type), supporting multi-speed and PID closed-loop control.  

   - **Output Voltage**: 0~rated input voltage, with automatic voltage regulation (AVR) function to stabilize output.

**II. Control and Drive Parameters**

1. **Control Modes**  

   - **Sensorless Vector Control**: Outputs 150% rated torque at 0.5Hz, with speed fluctuation ≤ ±0.5%.  

   - **V/F Control**: Supports 5 types of V/F curves, with a speed regulation ratio of 1:50 and speed accuracy ≤ ±1%.  

   - **Communication Protocol**: Standard RS485 interface, supporting Modbus RTU protocol, with baud rate optional 2400~115200bps.

2. **Dynamic Performance**  

   - **Starting Torque**: 150% rated torque at 0.5Hz under sensorless vector control, supporting speed tracking and restarting.  

   - **Acceleration/Deceleration Time**: Adjustable from 0.1~3600 seconds, supporting linear/non-linear acceleration/deceleration modes.  

   - **Carrier Frequency**: Adjustable from 0.5~15kHz, reducing motor noise and optimizing heat dissipation.

 **III. Interfaces and Expansion Functions**

1. **Input and Output Interfaces**  

   - **Digital Input**: 6 programmable terminals (X1~X6), supporting functions such as forward/reverse rotation, jogging, and fault reset.  

   - **Analog Input**: AI1 (0~10V), AI2 (0~10V/0/4~20mA), supporting dual analog叠加 input.  

   - **Analog Output**: 2 AO (0~10V/0/4~20mA), which can monitor parameters such as frequency and current.  

   - **Relay Output**: 2 programmable relays (R1/R2), with contact capacity of AC250V 3A/DC30V 1A.

2. **Expansion Capability**  

   - **Brake Unit**: Built-in brake unit (standard for models below 22kW), supporting external brake resistors for rapid braking.  

   - **Expansion Cards**: Optional PLC modules, Profibus/DNP3 and other communication cards to enhance system integration capabilities.

 **IV. Environmental and Physical Parameters**

1. **Environmental Conditions**  

   - **Operating Temperature**: -10℃~+40℃ (derate by 1% for each 1℃ increase above 40℃).  

   - **Storage Temperature**: -25℃~+60℃, humidity 5%~95% without condensation.  

   - **Altitude**: Full power operation below 1000m; for each 1000m increase above 1000m, derate by 10%.  

   - **Protection Level**: IP20 (for indoor use), supporting dusty and lightly oily environments.

2. **Mechanical Specifications**  

   - **Overall Dimensions**: 140mm (width) × 232mm (height) × 155mm (depth), weight 3.6kg.  

   - **Installation Method**: Wall-mounted, installed vertically with 120mm heat dissipation space reserved.  

   - **Cooling Method**: Forced air cooling with high-speed DC fan, fan life is about 20,000 hours.

**V. Protection and Reliability**

1. **Protection Functions**  

   - **Overcurrent/Overvoltage/Undervoltage Protection**: Real-time monitoring and rapid response to prevent equipment damage.  

   - **Overheating Protection**: Built-in temperature sensor, automatically reduces frequency or shuts down when the radiator temperature exceeds 80℃.  

   - **Phase Loss/Short Circuit Protection**: Detects input and output phase loss and motor short circuit to avoid fault expansion.  

   - **Motor Overload Protection**: Supports custom overload curves to adapt to different load characteristics.

2. **Reliability Design**  

   - **Three-Proof Paint Technology**: PCB boards are sprayed with three-proof paint to resist dust, oil stains, and mild corrosive gases.  

   - **EMC Compatibility**: Complies with GB/T 12668.2 standard, with built-in EMI filter to reduce electromagnetic interference.  

   - **Fault Diagnosis**: LED panel displays more than 20 fault codes in real-time, supporting historical fault query.

 **VI. Certification and Compliance**

- **Domestic Certification**: Passed China type test (CQC certification), complying with GB/T 12668.2 national standard.  

- **International Adaptability**: The input voltage covers the North American 380V standard and can be directly connected to the industrial power grid, but details of UL/CSA certification need to be confirmed.  

- **Local Support**: Chint's North American team provides technical support, located in Pomona, California.

 **VII. Typical Application Parameters**

1. **Energy-Saving Performance**  

   - **Fan and Pump Scenarios**: Achieve 20%~50% energy saving through V/F control, automatically optimizing the operation curve.  

   - **Constant Torque Loads**: Efficiency ≥ 93% and power factor ≥ 0.95 under vector control.

2. **Industry Adaptability**  

   - **Lifting Machinery**: High starting torque at 0.5Hz, supporting rapid braking and positioning control.  

   - **Conveyor Belt Systems**: Multi-speed operation and PID closed-loop control ensure the stability of material conveying.  

   - **Injection Molding Machines**: Precise torque control reduces energy consumption and extends mechanical life.

 **VIII. Advantages Compared with Competitors**

 **Summary**

NVF2G-5.5/TS4 has become a mainstream choice in the industrial drive field due to its wide voltage adaptability, strong overload capacity, and high cost performance. Its sensorless vector control, built-in brake unit, and rich interface configuration can flexibly adapt to scenarios such as lifting, conveying, fans, and pumps. For North American users, although certification details need to be confirmed, Chint's global service network and local support can provide reliable guarantees. It is recommended to communicate with distributors according to specific application requirements to obtain customized solutions.