3300V Explosion Proof Variable Frequency Drive

The FGI BPJV series 3300V intrinsically safe explosion proof variable frequency drive uses three-level technology and sensorless vector control with optional 6-pulse or 12-pulse rectification. This mine explosion-proof VFD supports RS485, CAN, CAN-Link and other field communication methods. Like the eaton explosion proof VFD, its starting torque is greater than 2.5 times, mainly used in the field of coal mine scraper conveyors and high-power belt conveyors. The operation data explosion proof motor starter realizes automatic storage function.

The Outline Drawing of 3300V Explosion Proof Variable Frequency Drive

Product Model Description

Technical Advantages

- Master-slave adopts advanced torque and speed synchronous control mode to achieve multi-machine automatic power balance
- The explosion proof variable frequency drive adopts imported ABB IGBT, the output voltage and current waveform are nearly sinusoidal waveform, and the high harmonic component is reduced by 40%.
- The explosion proof variable frequency drive output to load cable up to 2500 meters
- The control signal is transmitted by optical fiber to enhance the anti-interference ability of the signal and ensure the reliable operation of the explosion-proof VFD.
- The explosion-proof VFD can drive either a three-phase asynchronous motor or an AC permanent magnet synchronous motor
- With a variety of communication interfaces: CAN, RS485, RJ45, RS232 meet the digital requirements of the mine
- Multiple control methods: V/F, S/L Vector Control, CL Vector control, AFE
- Low-frequency over-torque function, maximum output of 2.5 times rated torque, to solve the problem of heavy-duty starting of scraper.
- Protection functions: overvoltage, overcurrent, short circuit, phase loss, undervoltage, leakage lockout, insulation online monitoring, chain break protection, output imbalance, temperature protection.
- Two rectification modes of 6 pulsation or 12 pulsation can be realized. (6 pulsation does not need to use special phase shifting transformer and frequency conversion special motor, directly input ordinary 3300V power supply, which improves the versatility of power transformer and reduces the cost of user equipment procurement.)
- A unique pre-tensioning bottom chain function for the tail motor during the start-up process is specially designed for the scraper conveyor;
- With WiFi data transmission
- Realize automatic storage function of explosion proof VFD running data

Performance Characteristics

- The explosion proof VFD has the functions of current, power, frequency, fault alarm and equipment running status display.
- Constant torque characteristics of the explosion proof VFD: The C is loaded to the rated load and can output constant torque within the range of 5Hz~50Hz (allowable error is +8% rated value and -3% rated value)
- Power supply voltage fluctuation: The explosion proof motor starter can work normally when it fluctuates within the range of 85% Ue~110%Ue.
- The speed stability of the explosion-proof VFD is not more than 1%.
- The efficiency of the variable frequency speed control device at the rated output frequency is not less than 95%.
- The explosion-proof VFD should be loaded to 1.2 times rated load and should be able to operate normally for 30 minutes. When the ambient temperature is 40 °C, the temperature rise limit value of the insulated coil, the temperature rise limit value of the terminal and the temperature rise limit value of the accessible parts shall not exceed the requirements of Table 2 under the rated voltage and rated load. The maximum surface temperature of the outer casing of the device does not exceed 150 °C.

- Overload protection: The explosion-proof VFD is loaded above 1.2 times the rated load, and can be protected within 20 minutes, and there is fault display.
- Instantaneous power-off protection: Loaded to the rated load, artificially interrupt the input power, and then send power, the water cooled vfd must not be damaged, the system must not be self-starting, and there is fault display.
- Phase failure protection: the input phase is broken, the water cooled vfd can't start; the output is out of phase, the explosion-proof VFD can't start, and there is fault display.
- Overvoltage protection: When the input voltage is higher than 110% Ue, the explosion proof VFD overvoltage protection action and fault display.
- Undervoltage protection: When the input voltage is lower than 85% Ue, the explosion proof VFD protection action and fault display.
- Short circuit protection: When any two phases of the output terminal are short-circuited, the explosion proof variable frequency drive should be able to protect the action when starting, and there is fault display.
- The acceleration and deceleration time are continuously adjustable: the acceleration and deceleration time of the frequency conversion speed regulating device should be continuously adjustable, and the upper limit value is not less than 60s.
- Frequency resolution: The output frequency resolution of the explosion proof variable frequency drive is not more than 0.1Hz.
- positive and negative sequence function: The explosion proof variable frequency drive has the function of changing the phase sequence of the three-phase output.
- Capacitor discharge test: The time required for the capacitor to discharge to the remaining energy should be no more than 10 min, and the capacitance value is 2565 μF.
- main circuit leakage lock: frequency conversion speed control device with main circuit leakage lock protection, when the main circuit insulation resistance to ground is lower than the setting value of Table 2, the main circuit leakage lock should be realized, when it rises to 1.5 times of the setting value, the main circuit leakage lock should be released.
- Water-cooling heat-dissipation protection: When the temperature of the IGBT heat sink reaches 50 °C, the water cooled vfd should be able to protect the action and have a fault display.
- Three-phase voltage allow unbalance: The normal voltage imbalance is allowed to be 2%, and the short-term must not exceed 4%.
Frequency tolerance: The normal frequency deviation is allowed to be ±0.2 Hz.
- Voltage allowable deviation: The allowable deviation of the three-phase voltage of 10kV and below is ±7% of the nominal system voltage.
- adopts speed sensorless vector control. When the explosion proof vfd runs at low frequency, it guarantees 100% rated torque output, and the maximum torque is 2.5 times of rated torque.
- has data communication function, using RS485 communication export.
- has a remote, local control method.
- The explosion proof vfd has the master-slave switching function, and realizes the power balance function of multiple water cooled inverters through RS485 communication.
- The explosion proof vfd can realize the functions of asynchronous start, smooth speed control and soft stop of asynchronous AC motor under various load conditions, reducing the starting impact of electrical and mechanical. Multiple water cooled inverters drag the scraper conveyor, and the power between thewater cooled inverters is automatically adjusted to achieve dynamic power balance between multiple units.
- The explosion-proof vfd has multi-stage speed regulation function to meet the needs of the site.
- Start acceleration (deceleration) time: 0~300S can be adjusted arbitrarily.
- Provide passive switching signal points such as explosion-proof vfd running feedback signal, fault signal and ready signal.
- The explosion-proof vfd has a start and stop pilot circuit to prevent the explosion proof vfd from starting up by mistake.
- The water cooled vfd through special control method to make the tail motor have the function of pre-tightening the bottom chain when starting.
- The explosion-proof vfd has two sets of parameters, master and slave, which can be switched as needed.
- Water cooled vfd IGBT three-level output, the output waveform is a three-phase sine wave.
- The main components of rectifier diodes, IGBT, film capacitors, PLC control system, explosion proof variable frequency drive movement core control, select foreign famous brands.

Performance Parameters

-Rated Input

Input Voltage: three phase 3.3kVac, ±15% / three phase 1.905kVac, ±15%

Input Frequency: 50~60Hz

-Rated Output

Output Voltage: 0~3300V

Overload capability: 2.2 times rated output current (1 minute for every 10 minutes)
Large output frequency: V/F & sensorless vector control: 120Hz
Motor torque: 150%~250% (0.5Hz) 250% (0Hz) (limited by motor)
Frequency / speed resolution: frequency resolution 0.01Hz, speed resolution 1rpm
-Control Characteristics
Carrier frequency: 1kHz~3kHz
Control mode: V/F control, speed sensorless vector control, speed sensor vector control
Acceleration time: 0~3000Sec
Deceleration time: 0~3000Sec
-Installation Environment
Operating temperature: -10 ° C (no icing) ~ +40 ° C
Storage temperature: -20 ° C ~ 65 ° C
Ambient humidity: 0~95% RH, no condensation, no corrosion, no gas
-Input and Output Parameters for Controling
Analog input voltage: 0V (-10Vdc) ~ +10Vdc, 11bit
Analog input current: 0 (4) ~ 20mA, 11bit
Digital input: passive digital point
Auxiliary voltage: +24V±20%, maximum 100mA
Analog output: 0 (4) ~ 20mA, 11bit
Digital output (DO3, 4): Multi-function output, open collector 50mA/+24V (±20%)
Relay contact output (DO1, 2): Multi-function output, switching capacity: AC 250V / 1A or DC 30V / 1A

Scope of Application
The altitude of the installation site does not exceed 2000m;
The working environment temperature is -5 °C ~ +40 °C, the relative humidity of the air is not more than 95% (+20 °C);
Suitable for environments with methane and coal dust explosive gases;
A place where there is no corrosive gas that destroys metals and insulating materials;
The environmental pollution level is 3;
The installation category is Class III;
The input voltage waveform is a sine wave;
The input voltage amplitude fluctuation does not exceed the rated value -15%~+15%.

Selection Guide

For more information, please download the attached.

Application

The explosion proof variable frequency drive is suitable for use in harsh environments with coal mine gas and coal dust explosion hazard. It is used for heavy scraper, heavy belt conveyor, large pump unit, large air compressor, transfer machine, emulsion pump station, belt conveyor, fan. , frequency control of pumps and other equipment motors

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