HUAWEI TECHNOLOGIES CO., LTD.
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Huawei Confidential
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23/4/9
Power Cutover Program for Hybrid Power Solution
BTS 3900A
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 2
1. Shut down the AC to the Rectifier on the BTS 3900A cabinet from the ACDB.
Cutover Program-implementation
2. Shut down the battery breaker of the rectifier, on the BTS 3900A Cabinet.
3. Shut down the ACDC breaker of the BTS 3900A Cabinet
Off the AC breaker from ACDB
Off the battery breaker
Off the ACDC breaker
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 3
Cutover Program-implementation
4. Remove the battery cable on the ACDC point prepare it
Remove the battery input cable 5. Remove the DC cable on the Load 1 and Load 2 point prepare it
Remove the load 1 and load 2 cable
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 4
Cutover Program-implementation contd.
New power systems
BTS3900A LOAD1
6. Connect it to one of the 2 pairs coming from the new power system, through a two input end connector.
LOAD 1 sketch map
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 5
Cutover Program-implementation contd.
6. Connect it to one of the 2 pairs coming from the new power system, through a two input end connector.
LOAD 1 Wiring diagram
New power systemsBTS3900A LOAD1
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 6
Cutover Program-implementation contd.
New power systemsBTS3900A LOAD 2
7. Connect it to the second pair of the 2 pairs coming from the new power system, through a two input end connector.
LOAD 2 sketch map
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 7
Cutover Program-implementation contd.
7. Do same for Load 2 cable.
New power systems
LOAD 2 Wiring diagram
BTS3900A LOAD1
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 8
Cutover Program-implementation contd.
7.“ON” the breaker for the new power system on the ACDB.
“ON” the breaker for the new power system on ACDB.
“ON”/close breaker for load on the new power system
HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential Page 9
Equipment check and power on goes thus : Check the voltage at the ACDB point and confirm at the main input point of
the new power system, if ok switch on the main input breaker.
Switch on the breaker for the two battery cabinets
Check the DC output from the new power system, if ok close the breaker for
the two pair cables going to BTS3900A
Finally check the DC voltage at the DCDB end to confirm same as the
output DC at the New power system, if ok confirm the site(s) is/are up and
running through the FME switch.
Clean up the site and leave.
Cutover Program- Check and power on
Thank youwww.huawei.com
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