I have a few MCC still on my campus, all are now EPN's but they have the gel-cells in them with the chargers. I had a power flicker yesterday of less than 10 seconds and I dropped those cabinets. Aren't the batteries suppose to hold those up for those kinds of flickers? I am on back up power but it is being worked on and was not in line to filter this kind of hit.....
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G3R MCC cabinet
- Thread starter calhoony
- Start date
I've had a system with those batteries too.
Those batteries not sized to keep the cabinet running. They are there to smooth out DC power fluctuations when there's a brownout sort of power hit. Not much more. (Sort of like a big capacitor.)
If you need to keep the cabinet up and running for short outages like that, you need an external UPS.
Carpe dialem! (Seize the line!)
Those batteries not sized to keep the cabinet running. They are there to smooth out DC power fluctuations when there's a brownout sort of power hit. Not much more. (Sort of like a big capacitor.)
If you need to keep the cabinet up and running for short outages like that, you need an external UPS.
Carpe dialem! (Seize the line!)
AvayaTier3
Technical User
Legacy G3si and G3r systems
3 batteries with a full charge provide up to 10 minutes of holdover for the "A"
carrier in each MCC cabinet, and 10 seconds of holdover for the other carriers
"B, C, D, E" in case of a commercial power outage. If a commercial power outage
occurs, the batteries may take up to 30 hours to come back to a full charge and
will fail test 5 with fail code 8 until fully charged. This will cause a POWER
alarm for the affected cabinet until some resolution is provided.
Converged systems with MCC cabinets can be programmed for longer than 10 second
holdover for carriers other than the "A" carrier.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting
3 batteries with a full charge provide up to 10 minutes of holdover for the "A"
carrier in each MCC cabinet, and 10 seconds of holdover for the other carriers
"B, C, D, E" in case of a commercial power outage. If a commercial power outage
occurs, the batteries may take up to 30 hours to come back to a full charge and
will fail test 5 with fail code 8 until fully charged. This will cause a POWER
alarm for the affected cabinet until some resolution is provided.
Converged systems with MCC cabinets can be programmed for longer than 10 second
holdover for carriers other than the "A" carrier.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting
- Thread starter
- #4
AvayaTier3,,,I'm with you on your statement,,I found the same document and thought I should not have went down. So I opened a ticket with Avaya and they said it there wasn't an active alarm they wouldn't even check my batteries. I pay over $700,000 a year in maintenance and this is what I get.....
We had a similar problem with our batteries, and I complained to Avaya as well. You won't get any help.
Although the documentation says you have some holdover time, I was told that the documentation was incorrect, and that the batteries were not designed for cabinet power holdover. (One of those "we reserve the right to change the specifications without warning" things.)
I was told that they're really just for DC power smoothing during brief fluctuations. Note that it says "up to 10 seconds". In a heavily loaded system, 10 seconds is quite optimistic. It may last 1 or 2 to handle power blinks, but not much more.
If you've ever seen them, you'd get the idea. They're quite small... Your car's battery is 2 or 3 times larger. Your MCC is likely pulling 240V and 10 amps of power. Those 3 little batteries would be hard pressed to keep up with that for any serious length of time.
Carpe dialem! (Seize the line!)
Although the documentation says you have some holdover time, I was told that the documentation was incorrect, and that the batteries were not designed for cabinet power holdover. (One of those "we reserve the right to change the specifications without warning" things.)
I was told that they're really just for DC power smoothing during brief fluctuations. Note that it says "up to 10 seconds". In a heavily loaded system, 10 seconds is quite optimistic. It may last 1 or 2 to handle power blinks, but not much more.
If you've ever seen them, you'd get the idea. They're quite small... Your car's battery is 2 or 3 times larger. Your MCC is likely pulling 240V and 10 amps of power. Those 3 little batteries would be hard pressed to keep up with that for any serious length of time.
Carpe dialem! (Seize the line!)
- Thread starter
- #7
Yes I have seen them dufus2506, and they are quite small but the flicker occured at an off peak time when we had almost 0 traffic and it still went down. I too figured that the batteries were just old ( at least 10 years) and needed to be replaced. So since I pay 3/4 million in maintenance I though they could at least replace a couple of batteries that cost $100 ea.....wrong, if I don't have an active alarm Avaya won't touch it. My problem will be solved after this weekend when the building emergency power gets fixed..
mikeydidit
IS-IT--Management
You may still want to look into a UPS for the system. I use APC products for mine. The flicker between normal power to the generator power may still know it down.
Also you are not alone as far as what you get for 7/24 maintenance.
faq690-6168
faq690-5976
faq690-6879
When is the last time you helped someone, just because you were able to?
For the best response to a question, read faq690-6594
Also you are not alone as far as what you get for 7/24 maintenance.
faq690-6168
faq690-5976
faq690-6879
When is the last time you helped someone, just because you were able to?
For the best response to a question, read faq690-6594
AvayaTier3
Technical User
If you have a UPS, you don't need the batteries or the charger for any cabinet.
Batteries are about $300.00 each and you can only get refurbished. AT&T, Lucent, Avaya all have recommended changing batteries every couple of years and of course, this is not a maintenance issue.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting
Batteries are about $300.00 each and you can only get refurbished. AT&T, Lucent, Avaya all have recommended changing batteries every couple of years and of course, this is not a maintenance issue.
A great teacher, does not provide answers, but methods to teach others "How and where to find the answers"
bsh
36 years Bell, AT&T, Lucent, Avaya
Tier 3 for 26 years and counting
We had a battery alarm on our G3siV11 in an MCC last year. We don't have maintenance. The local vendor we use came and replaced the batteries and the 397A (I think its an AC charger) for us, hot plug situation, no downtime. The breakdown was:
397A: $100
Batteries (48v 2.5a 3-pack): $895
Labor: $172
That was the only repair/support we've needed for the last several years. For us, pay-as-you-need-it is hella cheaper than a maintenance contract. We're contemplating moving to a S8xxx server and some G650s this year, and we'll probably carry some support for a while until I decide if the new hardware is as rock solid as the old stuff. The S8xxx looks exactly like our Dell rackmount server with a different logo. Our Dell servers are good but they don't have the same uptime as the G3si, so I have mixed feelings about an upgrade.
397A: $100
Batteries (48v 2.5a 3-pack): $895
Labor: $172
That was the only repair/support we've needed for the last several years. For us, pay-as-you-need-it is hella cheaper than a maintenance contract. We're contemplating moving to a S8xxx server and some G650s this year, and we'll probably carry some support for a while until I decide if the new hardware is as rock solid as the old stuff. The S8xxx looks exactly like our Dell rackmount server with a different logo. Our Dell servers are good but they don't have the same uptime as the G3si, so I have mixed feelings about an upgrade.
Winky92, it's not the S8800's you need to worry about, it's the constant new CM dot releases, and patches, and KERNEL patches that keep comming, out, all of them "cold" (rebooting required). At least with dual S8800's (in an S87XX configuration) you won't have as much downtime, but when you switch from 1 8800 to the 2nd, on a patch or software update, there is usually PN reset that occurs. AVAYA is now as bad as Microsoft for updates.
Mitch
AVAYA Certified Expert
Mitch
AVAYA Certified Expert
That's not very good to hear. We're a 24/7 operation. Scheduling even a short outage is a pain. I'm trying to remember the last time I had to reset our current phone system.... I know I've had to do it, but it was years ago. I think we had a power outage a year or two ago that caused it to cycle, but otherwise it just goes.
I blame VoIP. God never intended for phones to have an IP stack.
I blame VoIP. God never intended for phones to have an IP stack.
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