Frequently Asked Questions (FAQ)
Q1: What is the basic description of the VFD Type Explosion-Proof Motor?
A: This is a Variable Frequency Drive (VFD) compatible explosion-proof motor designed for use with adjustable speed drives. It features a reasonable structure, advanced technology, low noise, small vibration, and easy installation, making it ideal for variable speed applications in hazardous environments.
Q2: What is the key feature and output power range?
A: The key feature is its compatibility with Variable Frequency Drives (VFD). The output power range is extensive, from 185 kW up to 4000 kW.
Q3: What are the voltage and frequency specifications?
A: It operates on a high-voltage supply, with a range from 3 kV to 13.8 kV. The rated frequency is 50 Hz.
Q4: What is the speed range available?
A: The motor is available with 2 to 12 poles, allowing for a wide range of operating speeds when used with a VFD.
Q5: What protection classes are offered?
A: This motor is available in multiple protection classes to suit different environmental needs:
- IP44: Protected against solid objects larger than 1mm and water splashes from all directions.
- IP54: Dust-protected and protected against water splashes.
- IP55: Dust-protected and protected against water jets from any direction.
Q6: What are the insulation and cooling methods?
A:
- Insulation Class: The motor uses Class F/B insulation, designed to withstand the voltage stresses from VFD operation and high temperatures.
- Cooling Method: It uses IC416 (forced ventilation with an independent fan). This separate cooling system is essential for effective cooling at low speeds when the main shaft-mounted fan is less effective.
Q7: What are the standard installation methods?
A: The standard installation types are IMB3 (foot-mounted, horizontal) and IMV1 (flange-mounted, vertical, with the shaft end down).
Q8: What is the duty cycle and what are the operating environment conditions?
A:
- Duty Cycle: S1, meaning it is rated for continuous operation.
- Ambient Temperature: It can operate in environments from -15°C to +40°C.
- Altitude: It is rated for installations at an altitude of less than 1000 meters above sea level.
Q9: Where is this VFD-type motor typically used?
A: It is ideally applied to drive various high-power industrial equipment requiring variable speed control, including:
- Fan machines
- Compressors
- Pumps
- Crushers