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ATA QBMV Series Medium Voltage Frequency Converter

Multi-core control platform improves overall performance

Wide voltage operating range

No pollution to the grid

Safe, stable and reliable

ATA QBMV medium voltage frequency converter is an IGBT type medium voltage frequency converter that integrates cutting-edge power electronics technology from around the world. It uses SPWM (Sinusoidal PWM) control technology to achieve variable frequency speed control of medium voltage motors. The aim is to enhance the performance of variable speed operation of medium voltage motors, improve the control level of medium voltage equipment, as well as the power factor and operating efficiency of the equipment, meet process control requirements, reduce motor energy consumption, and achieve energy saving and environmental protection.

Classification：

Medium Voltage Frequency Converter

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Product Details

Specifications

Application areas

◆ Bypass function for power units (user selectable)

When one of the cascaded power units fails, causing that power unit to stop output; resulting in the system stopping output; the internal bypass circuit of the power unit is activated to bypass the output of that power unit. At the same time, the main controller inside the inverter will bypass the other two corresponding power units to ensure the three-phase voltage output of the inverter is balanced.

◆ Jogging function

When the inverter receives a jogging signal, it enters the jogging working state, and the motor accelerates to the jogging frequency at a set acceleration until the jogging signal disappears.

◆ Frequency skipping operation

To avoid the inverter operating at the resonance points of mechanical equipment, which could damage the motor and other devices, users can set frequency skipping to avoid certain frequency ranges.

◆ Multi-segment speed operation

The inverter can operate along a set multi-segment speed curve, allowing for a maximum of 16 speed segments, with the acceleration and deceleration slopes between adjacent segments adjustable as needed.

◆ Simple programmable function

The output of the inverter can change operating frequency bands based on received commands. The acceleration and deceleration rates during frequency band switching can be set.

◆ Closed-loop control function

The inverter reserves a PID controller. PID parameters can be set. The output of this PID can be used as the frequency setpoint for the inverter.

◆ S-curve acceleration and deceleration

According to production process requirements, the acceleration and deceleration curve output by the inverter can change based on the user-defined S-curve.

◆ Torque boost function

During motor acceleration, deceleration, and steady-state operation, this function can be set according to operational needs to boost the motor's output torque without exceeding the inverter's output current, enhancing the system's dynamic performance.

◆ Parameter correction function

Designed to improve production efficiency and facilitate on-site debugging. When the inverter detects that the system input voltage, input current, system output current, and output voltage parameters do not meet specified accuracy requirements, the values detected by the testing instrument can be input through the machine's HMI interface or through backend debugging software, allowing the inverter to automatically correct the detection process to meet accuracy specifications.

6KV Inverter Comprehensive Technical Specifications

Item		Specification
Power Output	Output Line Voltage Range	0~6KV
	Output Voltage Harmonics	Not greater than 7% at rated output
	Maximum Output Frequency (HZ)	120HZ
	System Efficiency	Greater than 97%
	Current Overload Capacity	110%~120% for 1 minute, 120%~150% rated current for 3 seconds
Power Input	Voltage	Rated three-phase voltage 6kV; voltage fluctuation range within -10%~+10% can output rated power Output power derating when input voltage is in the range of -45% to -10%, corresponding power derating range -35% to 0% Protection when exceeding rated voltage by 15% or below rated voltage by 45%, inverter stops
	Voltage Waveform Quality	Voltage Unbalance Rate < 3%, THDu < 4%
	Input Total Current Harmonics (THDi)	< 4% (under rated output power conditions)
	Input Power Factor	> 0.97 (under rated conditions)
	Rated Frequency	50Hz, fluctuation range: ±10%
System Characteristics	Protection Level	IP30; fan assembly is IP20
	Cooling Method	Forced Air Cooling
	Noise	< 80dB

10KV Inverter Comprehensive Technical Specifications

Item		Specification
Power Output	Output Line Voltage Range	0~10KV
	Output Voltage Harmonics	Not greater than 4% at rated output
	Maximum Output Frequency (HZ)	120HZ
	System Efficiency	Greater than 97%
	Current Overload Capacity	110%~120% for 1 minute, 120%~150% rated current for 3 seconds
Power Input	Voltage	Rated three-phase voltage 10kV; voltage fluctuation range within -10%~+10% can output rated power Output power derating when input voltage is in the range of -45% to -10%, corresponding power derating range -35% to 0% Protection when exceeding rated voltage by 15% or below rated voltage by 45%, inverter stops,
	Voltage Waveform Quality	THDu < 4%
	Input Total Current Harmonics (THDi)	< 4% (under rated output power conditions)
	Input Power Factor	> 0.97 (under rated conditions)
	Rated Frequency	50Hz, fluctuation range: ±10%
System Characteristics	Protection Level	IP30; fan assembly is IP20
	Cooling Method	Forced Air Cooling
	Noise	< 80dB

The ATA QBMV medium voltage frequency converters are widely used in industrial fields, especially in industries such as petrochemical, metallurgy, mining, electricity, water supply, cement, Marine and other industries. They are mainly used to start and control large motors, such as pumps, fans, and compressors, significantly reducing current and mechanical shocks during startup, thereby improving production efficiency and safety.

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The ATA QB-7 series motor soft starter is a new type of device that integrates power electronics technology and the latest motor control theories. It can be widely used in loads such as fans, water pumps, compressors, and ball mills, making it an ideal replacement for traditional starting devices like autotransformer reduced voltage starters, star-delta starters, and magnetic control reduced voltage starters.

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