I recently purchased an APC online UPS SRC 2000XLI-CC to power my stereo set up. The UPS has a constant output of 230 V in the line, but it outputs rather high voltages in the neutral. I have measured constant 80 volts using a multi-meter in neutral when the UPS is working from the battery (mains unplugged), or up to 10 volts when the UPS is connected to the mains which corresponds to whatever voltage is present in the mains neutral. I lodged a complaint with APC and the engineer who attended the case has closed it saying this is present in all APC UPSs. He even said APC specifies the induction during battery operation is up to 100 volts. 100 volts in the neutral! I thought an online UPS would provide me with a clean line, let alone 100 volts! The engineer suggested an isolation transformer, which might solve the problem. Again, he is not sure if it will solve the problem and it is not from APC and I have to pay for it. Did anyone else here have faced the problem? I understand a few members here are using the same online UPS and I request them to check their UPS output. If its a normal thing with online UPS then what solutions do I have to save my investment?
A brief history about the unit I have at the moment. Although I have bought few UPSs from APC for home and office use in the past and it has all been very good experiences, this time APC really messed it up. I paid Rs.33075 incl. tax to a dealer in Cochin for it. Took the ups home and upon opening the sealed box, I found the UPS to be in a very bad cosmetic condition. The entire surface was scratched, the screw heads were worn and the feet showing signs of usage. I complained to the dealer who promised to get me a new unit. An APC engineer inspected the UPS, and he too was convinced the machine didnt look new which he reported. I was given a replacement 2 weeks later, delivered in my absence. The delivery report said the unit was replaced due to an internal fault! This again was delivered without a box and had signs of wear. I talked to the engineer who inspected the unit and he promised that it is a new one, and they retained the box only because they wanted to send the taken back unit in it. I believed, or at least convinced myself that I believed, and hooked up my system to the UPS a few days later. I felt a hum through the speakers, not very loud, but louder than before and definitely louder than connecting it directly to the mains. This made me check the output voltage from the UPS.
A brief history about the unit I have at the moment. Although I have bought few UPSs from APC for home and office use in the past and it has all been very good experiences, this time APC really messed it up. I paid Rs.33075 incl. tax to a dealer in Cochin for it. Took the ups home and upon opening the sealed box, I found the UPS to be in a very bad cosmetic condition. The entire surface was scratched, the screw heads were worn and the feet showing signs of usage. I complained to the dealer who promised to get me a new unit. An APC engineer inspected the UPS, and he too was convinced the machine didnt look new which he reported. I was given a replacement 2 weeks later, delivered in my absence. The delivery report said the unit was replaced due to an internal fault! This again was delivered without a box and had signs of wear. I talked to the engineer who inspected the unit and he promised that it is a new one, and they retained the box only because they wanted to send the taken back unit in it. I believed, or at least convinced myself that I believed, and hooked up my system to the UPS a few days later. I felt a hum through the speakers, not very loud, but louder than before and definitely louder than connecting it directly to the mains. This made me check the output voltage from the UPS.
