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Profession 帝皇彩票开奖Engaged in power electronics 

Energy saving control Technology

Q & A

1。Is the inverter safe in daily use?

The Inverter has fully considered the personal safety issues in the design, and is safe for normal installation, commissioning, operation and maintenance. JD-BP37 / 38 series high-voltage frequency conversion speed control system is a high-voltage equipment, which has dangerous high voltage inside. Like other electrical equipment, it needs to strictly abide by the operating specifications. When you operate, maintain and inspect the equipment, please strictly abide by the requirements of the User Manual. Any incorrect operation may cause the system to stop, and may even cause equipment damage or personal injury.

2.Are the inverters very demanding on the power grid?

The inverter is suitable for a wide range of input voltages and is more suitable for domestic power grid conditions. JD-BP37 / 38 series high-voltage frequency conversion speed regulation system has a wide range of adaptability to the grid voltage. Even if the grid-side voltage fluctuates within the range of 65% to 115% Ue, the device will not stop. When the voltage fluctuates from -15% to + 15% It can still continue to run with the rated load. After the grid voltage is lower than 65% of the rated voltage, the device is in the standby state, but after the voltage returns to normal, it can automatically start the motor without shock (can be set) to the normal operating state, which will not affect continuous production. Products with higher fluctuation range can be customized.

 

3.Can the inverter realize the protection of the motor?

JD-BP37 / 38 series high-voltage variable frequency speed control system has overvoltage, undervoltage, overcurrent, overload, single-phase grounding for the motor, and can allow access to external nodes (motor protection node), overheating the motor windings and bearings , Excessive vibration, cooling system failure and lubrication system failure to protect。

 

4.What is the output of the inverter at low frequency?

The JD-BP37 / 38 series high-voltage frequency conversion speed control system has a torque boost function to increase the output voltage during low-frequency operation and increase the output torque during low-frequency operation. In order to compensate the low-frequency torque characteristics of V / F control, do some boost compensation for the inverter output voltage at low frequency to increase the output current and torque. (The vector control mode of the inverter has the largest torque ratio per ampere, and can provide an output of more than 1.5 times the rated torque at low frequencies, with excellent dynamic torque response.)

5。Can the inverter power grid run continuously?

With the function of instantaneous power failure and restart, it can ensure the normal operation of the power grid in the event of instantaneous power failure。 In China, due to the influence of power grid capacity or other factors, instantaneous input voltage drops or instantaneous power outages occur。 However, after a period of time, the voltage can often recover by itself。 Generally, high-voltage inverters have input voltage drops for more than a certain time or After the input is powered off, the inverter will protect the shutdown, or it will stop after a maximum of a few seconds of operation。 Fresh scenery has fully studied and considered the influence of such factors。 The voltage returns to normal within the time (the longest can be set to 60 seconds, the typical value is 3 seconds), the new wind and light inverter can start without impact on its own, drag the motor to the state before operation, and will not terminate the subsequent production。

 

6.How does the frequency conversion and power frequency switch to the power grid?

The inverter of our company has the function of interference-free switching between the inverter and the power frequency grid。 By detecting the frequency, phase, and amplitude information of the output of the inverter and the power frequency grid, the frequency, phase, and amplitude of the two are adjusted to be the same at the moment of switching, and the current and frequency conversion of the current switching function can be realized。

 

7.Does it have bypass operation function?

JD-BP37 / 38 series high-voltage frequency conversion speed control system also has the power frequency manual, automatic bypass (optional) on the main circuit and the bypass function of the inverter power unit.

 

8.What protection functions does the inverter have?

JD-BP37 / 38 series high-voltage frequency conversion speed control system has motor overload and overcurrent protection; unit input phase loss protection, overvoltage protection, overheat protection, communication failure protection; stall protection and current limit function; control power supply failure interlock protection ; Cabinet door switch protection and so on.

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