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FAQs Library
Q
Can GD5000 support Modbus/TCP communication?
2020-12-24
A

ModbusTCP communication is possible, but requires a non-standard design

Q
How should we do when motor cable or well depth is very long?
2020-12-24
A

If motor cable or well depth is >50 meters, we recommended that you please buy AC output reactor,for reducing over-current issue and reducing high voltage shock.

Q
What are the requirements of cooling space and air conditioning for GD35 installation?
2020-12-24
A

According to the power consumption of frequency converter itself, air conditioning is required for use in confined space. Other occasions should be well ventilated.

Q
GD200A how to set parameters for terminal control? What are the relevant parameters?
2020-12-16
A

GD200A can set terminal start, power on automatic operation, automatic fault reset and other functions. Please see the attachment for relevant parameters.
PDF Download

Q
What is the power consumption of GD20-EU itself?
2020-12-16
A

The power consumption of GD20-EU is around 3-4%.

Q
A004 AC overvoltage
2020-12-16
A

Q: A004 AC overvoltage: after the inverter is connected to the grid or the power generation peak period, the grid voltage exceeds the safety voltage range, causing A004 overvoltage alarm

A: Possible causes:
1. The voltage from the transformer at the connection point is on the high side;
2. There are many photovoltaic power generation equipment on the line, but the line load can not absorb so much energy, and the grid voltage is gradually raised;
3. The cable used from the inverter to the parallel point is longer (L), the wire diameter is smaller (s), and the line resistance is large (r = ρ L / s). When the voltage of the grid point reaches the output of the inverter, the voltage increases △ u = I * r = I * ρ L / s;
4. Several photovoltaic power generation equipment are connected to the same line;

Solutions:
1. Rreducing the output voltage range of the transformer;
2. Reasonably selecting the line diameter and planning the routing path, and connecting the grid nearby to minimize the impact of line loss;
3. If there are more than one inverter equipped near the grid connection point, they can be incorporated into different power supply lines;

Q
What is the difference between -D and -S in MVD GD5000 models?
2020-12-16
A

-D is for double-sided maintenance and -S is for single-sided maintenance.

Q
Does solar pumping controller GD100-PV can drive other kind of motor? Such as compressor.
2020-12-16
A

Yes, but solar power is unstable, may not keep runs 50Hz all the time, so if your speed requirment is lower is acceptable.

Q
When solar pumping controller GD100-PV can't runs to 50Hz, how should we do?
2020-12-08
A

1.Insure solar input total Vmp>=550VDC.
2.When weak light or cloudy is normal.
3.If configuration is no issue,and frequence keep under 50Hz,please contact INVT company.

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