Thank you jairbj!! Problem now solved!! 8) 8)

Thank you jairbj!! Problem now solved!! 8) 8)

For more information, please visit our website.

I took off the rear adapter and connected AC voltage lines directly, and guess what...the power supply did NOT turn on, which is exactly the same situation as you reported. Logically, I started thinking the adapter must have some design error that is somehow causing the unexpected POWER ON behavior, and my testing described below confirmed this was, in fact, the case

...the adapter has a critical design flaw! At least is does for the version of my power supply...RG2

I looked closely at +48v and -48v PCB traces on RG2, and I noticed the PCB design has changed (over time) compared to photos from other users that have previously been uploaded to this thread. Apparently, HUAWEI has changed the traces in the PCB from previous versions, but unfortunately the adapter that I purchased was not matched and suitable to the revised traces on the PCB.

I was able to find a simple workaround so I can still use the adapter, but also re-enable the START PIN function. I applied a KAPTON tape on BOTH SIDES of PCB traces on the power supply, actually on the top of the -48v traces.

After tape was applied, I reconnected the adapter to the power supply, and when I apply AC voltage the adapter works correctly. :thumb: To turn on the power supply is now very simple: GROUND only 1 of the 2 wires from the JST connector (the black wire). Note: Grounding the other JST wire (white wire) has no effect, so I leave it floating. The photo below will hopefully help others who have found this same problem.

Thank you again jairbj for your help and ideas, PROBLEM IS NOW SOLVED!! 8) 8)

Power_supply_PCB.JPG

PCB_power_supply_3.JPG

I took off the rear adapter and connected AC voltage lines directly, and guess what...the power supply did NOT turn on, which is exactly the same situation as you reported. Logically, I started thinking the adapter must have some design error that is somehow causing the unexpected POWER ON behavior, and my testing described below confirmed this was, in fact, the caseI looked closely at +48v and -48v PCB traces on RG2, and I noticed the PCB design has changed (over time) compared to photos from other users that have previously been uploaded to this thread. Apparently, HUAWEI has changed the traces in the PCB from previous versions, but unfortunately the adapter that I purchased was not matched and suitable to the revised traces on the PCB.I was able to find a simple workaround so I can still use the adapter, but also re-enable the START PIN function. I applied a KAPTON tape on BOTH SIDES of PCB traces on the power supply, actually on the top of the -48v traces.After tape was applied, I reconnected the adapter to the power supply, and when I apply AC voltage the adapter works correctly. :thumb: To turn on the power supply is now very simple: GROUND only 1 of the 2 wires from the JST connector (the black wire). Note: Grounding the other JST wire (white wire) has no effect, so I leave it floating. The photo below will hopefully help others who have found this same problem.Thank you again jairbj for your help and ideas, PROBLEM IS NOW SOLVED!! 8) 8)Power_supply_PCB.JPGPCB_power_supply_3.JPG

Huawei Rectifier Module RG1

The Huawei RG1 Rectifier Module is a digital rectifier with high efficiency and high power density. lt supports a wide input voltage range and provides  53.5v DC default output voltage. RG1 Rectifier Module provides comprehensive protection functions and supports soft start with low noise. Multiple rectifiers can be connected inparallel. With the power monitoring technology, states of the rectifier and load are monitored in real time, and the output voltage can be adjusted.

 

Features of Huawei Rectifier Module RG1

&#; Wide input voltage range

&#; Wide operating temperature range

&#; Low total harmonic distortion (THD)

&#; Full digital control

&#; Hot swappable

&#; Supports a smart electricity meter

&#; Supports CAN bus communication

Additional reading:
Technology for Your Business
02312QTD R4850G2 Rectifier Module R4850 1U 3000W High ...
5 Must-Have Features in a Vertiv Indoor Power Cabinet

You will get efficient and thoughtful service from HUAXUN.

&#; Supports LED alarm display

&#; Supports voltage adjustment, current adjustment, and current equalization

&#; Disconnects at above 320 V AC

&#; RoHS compliance

&#; TUV, CE, NRTL, EAC, ANATEL, FCC, and RCM certifications, CB certificate

 

GET HUAWEI RECTIFIER MODULE WITH DISCOUNT

 

Parameters of Huawei Rectifier Module RG1

Efficiency Peak efficiency: 97%>96% (230 V AC, 30%&#;80% load) Dimensions (H x W x D) 40.8 mm x 105 mm x 269 mm Weight &#; 2.2 kg Cooling mode Built-in fan (fan speed adjustment) Environment Specifications   Operating temperature &#;40°Cto +75°C Storage temperature &#;40°Cto +75°C Relative humidity 5%&#;95% RH (non-condensing) Altitude &#;  m (When the altitude ranges from m to m, the operating temperature decreases by 1°Cfor each additional 200 m.) Electrical Specifications   Input   Operating voltage range 85 V AC&#;300 V AC Input frequency 45 Hz&#;66 HzRated frequency: 50 Hz/60 Hz Rated input current &#; 21 A Power factor &#; 0.99 (50%&#;100% load) THD &#; 5% (50%&#;100% load) Output   Output voltage 42 V DC&#;58 V DCRated voltage: 53.5 V DC Output power W(176 V AC&#;300 V AC) W&#; W (176 V AC&#;85 V AC) Peak efficiency 97%±0.2%

 

As a professional rectifier module supplier, We will provide original Huawei RG1 Rectifier Module with reasonable price, timely delivery and considerate after-sales services. We welcome worldwide customers to contact us for business relationships, we will always provide stable supply to you. Feel free to contact us to get more details of Huawei Rectifier Module RG1.

 

The company is the world’s best HUAWEI Rectifier module supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.