Download att-tp-76900-012

AT&T INSTALLATION TESTING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76900-012
TO: ALL AT&T INSTALLATION SUPPLIERS
Date: 08-20-2012
EFFECTIVE DATE: 5 days from posted date or as per Supplier’s Contract
Submitter’s Name: Steve Martin
TP: TP76900
Subject: Battery Testing / Charging
Section:
Subsection:
Subsection:
P
7
Action: Add & Modify: X
Section Title: Power
Section Title: Batteries
Subsection Title:
Prior to Change:
7.
BATTERIES
7.1.
Test Requirements - Flooded Cells
7.1.1
Test results for the following items shall be recorded on the Storage Battery Charge Report, ATTTP-76300:
a) Tests shall be made on the batteries prior to initial charge to record individual cell
electrolyte specific gravity
b) Individual cell voltages after initial charge, but while still on charge
c) Individual cell electrolyte specific gravity
d) Individual cell inspection for the presence of crystals or other defects
e) Tests shall be made on the batteries to record the individual cell voltages 72 hours after
initial charge while on float.
7.1.2
Test results shall be recorded on the Pressure Test Record, per ATT-TP-76300.
7.1.3
Tests shall be performed on the batteries during a discharge (simulated AC outage) to record (on
the Test Record, per ATT-TP-76300):
a) Individual cell voltages during the discharge
b) Current output, on a per string basis, including existing strings, during a simulated AC outage
c) Current readings on each individual battery drop cable during a discharge.
Post Change:
7.
BATTERIES
7.1.
Test Requirements - Flooded Cells
7.1.1
Initial charging may be performed off-site so long as charging records are kept appropriately and
are available for inspection by AT&T at any time.
7.1.2
The required time of initial charge (per ATT-TP-76300) ends at the time that the voltage and
current have reached steady state operation. Steady state operation is defined as voltage and
current having little or no appreciable change for at least three consecutive readings. The
Page 1 of 3
AT&T INSTALLATION TESTING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76900-012
readings prior to steady state operation shall be recorded on the Pilot Cell Charge Report (Figure
M-3, ATT-TP-76300).
7.1.3
Test results for the following items shall be recorded on the Storage Battery Charge Report, ATTTP-76300. This document shall include the voltage, specific gravity and temperature of each cell
at the following intervals:
a)
b)
c)
d)
7.1.4
Prior to start of initial charge
At end of charge, prior to turn-down to float
72 hours after end of initial charge
Individual cell inspection for the presence of crystals or other defects
The Pilot Cell Charge Report, ATT-TP-76300 shall record the time, charge current, voltage and
temperature of the pilot cell, at the following intervals:
a)
b)
c)
d)
e)
At the start of charge.
Once each hour for the first eight hours of charge.
Three times a day after the first eight hours of charge.
Just before charging is stopped or temporarily discontinued if necessary. Reference the
manufacturer’s documentation to establish the recommended procedure to determine and
record full charge.
When charging is restarted (if initial charge is interrupted) and the charge current is stable.
7.1.5
The Storage Battery Charge Report and the Pilot Cell Charge Report shall be submitted to the
AT&T Representative when the forms have been completed including the 72 hours after end of
initial charge reading. The initial charge shall be approved by the AT&T Representative prior to
placing the string on-line.
7.1.6
A paper copy of the Storage Battery Charge Report and the Pilot Cell Charge Report shall be
turned over to the AT&T Representative to be retained in the central office battery records
book. A copy of each shall be uploaded to the Electronic Job Folder (EJF).
7.1.7
A load (discharge) test shall be performed in conjunction with the ATS-Power Test and
Certification (T&C) per the following criteria:
a)
b)
c)
d)
e)
7.1.8
Battery strings to be added to an existing multi-string plant shall be placed on-line prior to
load test.
Load test of a new string added to an existing multi-string plant shall be done using the
office load, returning to float voltage after the test.
Battery strings to be added as part of a single-string plant or where both/all strings are new
(old strings shall be disconnected) shall be load tested prior to being placed on-line.
Load testing of string(s) for a single-string plant or where both/all strings are new, shall be
done off-line with an artificial load bank using four hour rate for that size battery.
Load testing, whether on-line or off-line, shall be run for at least 30 minutes.
Tests shall be performed on the batteries during the load (discharge) test to record (on the Test
Record, per ATT-TP-76300):
a) Individual cell voltages during the discharge
b) Current output, on a per string basis, including existing strings, during a simulated AC outage
c) Current readings on each individual battery drop cable during a discharge.
Page 2 of 3
AT&T INSTALLATION TESTING REQUIREMENT CHANGE NOTIFICATION - ATT-TP-76900-012
7.1.9
Pressure Test Records, per requirements in ATT-TP-76300, shall be included in the paper records
left on-site, in the email to the AT&T Representative, and uploaded to EJF.
Questions relative to this TRCN should be addressed to Lawrence Lyles at (404) 927-7722.
Lawrence Lyles
Lead Network Engineering Manager, NP&E
Enterprise Technology Support
[email protected]
Access the TP's on the Extranet Site https://ebiznet.sbc.com/sbcnebs
Concurred
Jimmy Davis - Area Manager Network Process & Quality
Date: 9/10/12
Steve Martin – Principal – Product Development Engineer
Date: 8/20/12
Release Approved
Lawrence E. Lyles - Principal – Network Design Engineer
Date: 9/10/12
Page 3 of 3