75kVA 3-Phase 400v 50Hz/240v 60Hz Frequency Converter

Unfortunately, our converters do Not currently support direct adjustment of voltage and frequency via a computer. If you would like this functionality, you must tell us before purchasing. This functionality requires customization to add an HMI.

Regarding the installation and wiring of frequency converters, the cables are usually connected from the bottom opening. R/S/T is the input power terminal, N is the natural wire, G is the ground wire, and U/V/W is the output three-phase voltage. You can refer to our operation demonstration video, please see on: https://www.youtube.com/watch?v=MJoK9mAmYhI
And https://www.youtube.com/watch?v=xRDzC1vHtIw

If the phase voltage (U-N, V-N, W-N) is same, and the output line voltage (U-V, V-W, W-U) only has a deviation of about 4-5V. This is normal. You can use this converter normally.
Since the converter you bought is a 2019 version, if you want to control the line voltage accuracy to about 1V, you can only upgrade and replace it with a new motherboard."

We still need you to provide Line voltage (U-V, V-W, W-U) unbalance measurements before confirming parts replacement. Please use a multimeter to measure the three-phase output line voltage (U-V, V-W, W-U) when the converter is running without load, and provide us with a picture of the measurement result for further confirmation.

You need to provide 2 sets of measurement data:
1. Phase voltage measurement value (U-N, V-N, W-N)
2. Line voltage measurement value (U-V, V-W, W-U)
You can send us the large video file via wetransfer.com. It would be better if the feedback is video.

Based on your specs, recommended frequency converter model: HZ-50-1103, 3kVA power capacity, input: 1ph, 230V (+/- 10%), 50/60Hz and output: 1ph (L, N, G), adjustable ( 0-150V), adjustable (40-120Hz), 25A.

Ok, based on your machine specs, recommended frequency converter model: HZ-50-1110, 10kVA power capacity, input: 1ph, 220V (+/- 10%), 50/60Hz and output: 1ph (L, N, G), adjustable (0-300V), adjustable (40-120Hz), 41.6A.

For 16A electronics load, recommended frequency converter model: HZ-50-1105, 5kVA power capacity, input: 1ph, 230V (+/- 10%), 50/60Hz and output: 1ph (L, N, G), adjustable ( 0-150V), adjustable (40-120Hz), 41.6A.

Ok, based on 37.2kVA load, recommended frequency converter model: HZ-50-3145, 45kVA power capacity, input: 3ph, Wye (L1, L2, L3 + N, G), 480V (+/- 10%), 50 /60Hz and output: 1ph, (L + N, G), adjustable (0-300V), adjustable (40-120Hz), 188A.

Thanks for your kind information on transformer load capacity for our reference.
1. For power 2-5 MVA, it is alright to choose a 15KVA converter, but for a nominal power that may be around 15-25 MVA, you need to choose a 75 KVA converter in fact. Because our converter needs to amplify at least 3 times the capacity for transformer load. Choose 15 KVA & 75 KVA converters is the only choice.
2. Q&A on the other questions:
A. Yes, the external filter is an option.
B. If you just need our converter to work as a single-phase output occasionally, you can do it without a selector and without any changes. Because our three-phase converter can be directly connected to an output Hot Line, add zero Line N, then it becomes a single-phase output, it can be used like this.>>>the nominal output power will be 1/3 of nominal power (5-7kVA).
C. About remote control voltage output/frequency, what er can do is output from the converter lead, connected to an external control box with a display panel to achieve remote control. Thus our remote control is wired, it is not software.

Yes. Ok, based on your specs, recommended frequency converter model: HZ-50-3375, 75kVA power capacity, input: 3ph, Wye (L1,L2,L3 + N,G), 480V (+/- 10%), 50/60Hz and output: 3ph, Wye/Delta (L1,L2,L3 + N,G), adjustable (0-520V), adjustable (40-120Hz), 104.2A.

The 104.2A is the max inrush current the frequency converter can handle, so, even the in-rush current duration for your application is less than 0.5 seconds, recommended converter would be 75kVA as listed below.