SRT10KRMXLT - Bypass not in range, high voltage and low voltage messages?

[Anonymous user]

Hello,

We have a new SRT10KRMXLT with 5 external battery packs. This unit is set to replace our aging Smart-UPS RT 10000 RM XL. Both units are next to each other being feed from main utility.

We are testing the new unit by cutting power and switching to backup generator, the messages we see are:

• UPS: On battery power in response to low input voltage.
• UPS: Bypass not in range ; low voltage.
• UPS: No longer on battery power.
• UPS: An input voltage or frequency problem no longer prevents switching to bypass mode.

I am curious about the two highlighted messages, are they normal to receive during a "switch from main to generator test"?

What I would expect is the "On Battery power" and "No longer on battery power" messages; but not sure what to make of the other two notifications the UPS generates?

We also ran into an issue where we got a unexpected "Bypass not in range, high voltage" message from the new UPS but our old UPS did not do anything. So I am thinking, is the new UPS set too sensitive?

Here are the power settings and data log of the new UPS:

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Here is the data log for the high voltage notification...

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Here are the power settings from our old UPS that did not generate the "high voltage" message.

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So what I am wondering, do I need to copy the settings from the old UPS to the new UPS for the power settings of Bypass Upper/Lower Voltage to avoid the "high voltage" message? I have attached the data log.

[BillP · Accepted solution]

HI, 

we Facing the exactly same issue of that, any thing can do to solve that issue?

bob

[BillP]

Hello - 

Your new UPS is already set at the widest possible settings for bypass and should therefor be less sensitive than the older unit. Do the "Bypass our of Range" messages clear once the unit stabilizes on generator power or are they consistent? Will the UPS function online with the generator input?

[BillP]

HI Laim,

Any instruction of that? please.

Bob

[BillP]

Basically just checking the unit to see if the alerts clear after the power stabilizes on generator. It might be best to gather the event and data logs from the network management card from the time frame of a generator test. 

[Anonymous user · Accepted solution]

I would like to add that this is still an on-going issue for us, been using the UPS for a few months now.

The UPS occasionally throws:

• UPS: Bypass not in range ; high voltage.
• UPS: An input voltage or frequency problem no longer prevents switching to b...

The issue clears on itself fairly quickly but this was never observed on our older UPS likely because it was not as sensetive.

We have mains power > diesel generator > UPS.

We've had a electrician on-site a few times to verify everything and they confirmed power coming in is clean and stable.

I tried to adjust the logging in the APC network management card to try and log the event data point to see what the input values are, but have not been able to see anything in the logs that would cause this.

I also worked with APC Support but did not get anywhere.

[BillP]

Hi Mirza - 

Was the electrician able to look at the line with a scope while the UPS was giving the Bypass not in range messages?

[Anonymous user]

No, because this would happen randomly.. like once a week... hard to time an electrician on-site if this is totally random.

I was hoping I could catch something using the APC Management Card but the data log interval range starts at 1 minute, we would need much more granular log interval (down to a second).

[BillP]

I think your only option would be a recording scope that could be left on the line for an extended period of time. The network card in the UPS just doesn't offer the same level of detail that a true scope would. From there you could hopefully back track and narrow down the cause of the disturbance. In the meantime, your UPS will function just fine and it will not allow your unit to switch to bypass should there be a potentially dangerous power issue.

[jaszadrian_apc · Accepted solution]

Hi,

We have a Smart-UPS SRT 10000

About UPS
Model:	Smart-UPS SRT 10000
SKU:	SRT10KXLI

I have the same problem and there is no answer to the problem by the distributors

Date	Time	Event
12-Oct-19	02:52:14	UPS: No longer on battery power.
12-Oct-19	02:52:13	UPS: An input voltage or frequency problem no longer prevents switching to bypass mode.
12-Oct-19	02:51:49	UPS: Bypass not in range ; low voltage.
12-Oct-19	02:51:48	UPS: On battery power in response to frequency and phase difference.
12-Oct-19	02:48:33	UPS: An input voltage or frequency problem no longer prevents switching to bypass mode.

Smart-UPS SRT 10000										Integrated EMU
Date	Time	Vmin	Vmax	Vout	Iout	%Wout	%out	FrqOut	%Cap	Vbat	Tups	T1ambC	%Hum1	T2ambC	%Hum2

		Smart-UPS SRT 10000										Integrated EMU
Date	Time	Vmin	Vmax	Vout	Iout	%Wout	%out	FrqOut	%Cap	Vbat	Tups	T1ambC	%Hum1	T2ambC	%Hum2
12-Oct-19	03:55:04	0.00	0.00	217.73	8.56	16.50	19.07	51.90	99.00	0.00	19.00	20.0
12-Oct-19	03:45:04	0.00	0.00	217.59	8.34	15.99	18.34	51.56	99.00	0.00	19.00	20.0
12-Oct-19	03:35:04	0.00	0.00	217.67	8.50	16.38	18.65	51.89	99.00	0.00	19.00	20.0
12-Oct-19	03:25:04	0.00	0.00	217.13	8.41	16.22	18.43	51.40	99.00	0.00	19.00	21.0
12-Oct-19	03:15:04	0.00	0.00	217.14	8.44	16.32	18.57	51.09	99.00	0.00	20.00	21.0
12-Oct-19	03:05:04	0.00	0.00	217.69	8.53	16.52	18.80	51.70	99.00	0.00	21.00	22.0
12-Oct-19	02:55:04	0.00	0.00	218.14	8.81	17.16	19.43	51.70	99.00	0.00	20.00	23.0
12-Oct-19	02:45:03	0.00	0.00	226.67	8.19	16.38	18.67	50.00	99.00	0.00	19.00	20.0
12-Oct-19	02:35:03	0.00	0.00	223.52	8.31	16.46	18.70	50.00	99.00	0.00	19.00	21.0
12-Oct-19	02:25:03	0.00	0.00	226.20	8.25	16.56	18.66	50.00	99.00	0.00	19.00	21.0
12-Oct-19	02:15:03	0.00	0.00	225.42	8.31	16.63	18.79	50.00	99.00	0.00	20.00	21.0
12-Oct-19	02:05:03	0.00	0.00	220.28	8.59	16.79	19.06	50.09	99.00	0.00	20.00	23.0

[Anonymous user]

I continue to have this problem, few times a month I get alerts from the UPS related to input frequency issues and also battery pack disconnects but everything seems to work fine (we do regular testing of switching from main to generator and for a few seconds the UPS kicks in).

I spent days working with APC support when we installed the UPS and eventually just gave up, I had an electrician verify everything and do input/output readings using probes, no issues whatsoever. The management card shows the event errors and that they are resolved, the power detail logs show no abnormalities. 

APC support just kept sending me in a loop and that it is an issue with the power coming in. Next time I go and replace the UPS, I will definitely be looking at evaluating other UPS manufacturers.

[CaliDuck]

We had an APC Support Tech tell us this was due to the latest firmware version having an issue and they provided us this link. They told us to wait for a newer firmware...wow! So hope/pray?
https://www.apc.com/us/en/faqs/FAQ000266396/