Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Guidance for Cut over and External Alarm

Termination of Indoor sites

For MTNN Hybrid Project

V1.0

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Contents

1. Key points for Indoor sites installation ............................................................................................ 3

2. 24V Ericsson indoor sites & 48V Huawei Indoor sites ................................................................... 3

3. 24V Huawei Indoor site ..................................................................................................................... 3

3.1. Before Cutover ........................................................................................................................... 3

3.2. Cutover preparation .................................................................................................................. 4

3.3. Transmission cutover ................................................................................................................ 4

3.4. BTS cutover and remove the old PSU modules ...................................................................... 6

4. 48V Ericsson indoor RBS .................................................................................................................. 6

5. Alarm Termination for indoor site ................................................................................................... 7

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

1. Key points for Indoor sites installation

Indoor sites cannot be cut over before MTN install DC cooling system, either DC

air conditioner or DC extractor fans for shelter cooling;

Both the hybrid cabinet and battery cabinet should be installed outside shelter on

available plinth;

DCDB should be installed close to the existing rectifier, in order to reuse the

load cables from the rectifier output;

Three pairs of input should be connected for DCDB input, two for LLVD and

one for BLVD

DCDB can be powered either from rectifier or converter, depending on the input

power needed for BTS;

Inverter can be installed either indoor or outdoor to power the AC load including

shelter light, aviation light and etc;

Be sure to cut over all the DC loads from existing rectifier, including but not

limited to BTS, transmission, DC cooling system, DC sensors and etc.

Figure 1. DCDB to be installed on the wall of the shelter

2. 24V Ericsson indoor sites & 48V Huawei Indoor sites

For these two types of sites, all the new connections from hybrid rectifier is the

same as old existing rectifier, so the cut over is easy to identify and is omitted in

this document.

3. 24V Huawei Indoor site

Scenario description: this is applicable for indoor site with 24V output rectifier

system and Huawei indoor BTS. Converter is not really necessary for this type

of sites.

3.1. Before Cutover

Input from rectifier/converter

Output to DC load

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Figure 2. Connection structure before cut over

3.2. Cutover preparation

Figure 3. Cut over preparation and cut over point

3.3. Transmission cutover

Please be noted that all transmission cut over should be done before BTS cut over.

Pay attention to the Positive and Negative difference for 24V and 48V.

Cut over point

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Figure 4. Cut over of transmission equipments

24V :Red-Positive; Black-Negative

48V:Black-Positive; Blue-Negative

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

3.4. BTS cutover and remove the old PSU modules

Transmission

Huawei

Indoor BTS

24V input

Top

Bottom

PSU PSU PSU

48V

output

24V Input

24V to 48V Converter

24V~60V input.Can support

both 24V and 48V input

24V rectifier

48V rectifier DCDB

Figure 5. connections after cut over

4. 48V Ericsson indoor RBS

Scenario description: this is applicable for indoor site with 48V output rectifier

system and Ericsson indoor RBS.

24V :Red-Positive; Black-Negative

48V:Black-Positive; Blue-Negative

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Figure 6. connections after cut over

5. Alarm Termination for indoor site

Figure 7. DDF rack for indoor site

Input from DCDB to RBS converter module.

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

Figure 8. Alarm termination

Table 1 shows the alarm configuration existing on site while column “hybrid alarm”

shows the alarm we are going to terminate from hybrid side. Subcontractor shall

follow this standard unless the regional customer have different requirements.

Table 2 shows the alarms from hybrid equipments, by which you should know how

to terminate the alarms on hybrid side.

Table 1. Existing alarm definition for indoor sites

No. Port Alarm

ID Redefined Alarm ID

Alarm Name Redefined Alarm

Name Hybrid Alarm

Signal Ground

1 8 2262 65401 Extended 4B

alarm

Harris dehydrator low pressure alarm

EAC1-PIN10 EAC1-PIN11

2 1 2246 65402 Extended 43

alarm Free High Temp EAC1-PIN28 EAC1-PIN29

3 2 2248 65403 Extended 44

alarm Free DC Aircon EAC1-PIN9 EAC1-PIN1

4 3 2250 65404 Extended 45

alarm

Harris high temperature

alarm EAC1-PIN27 EAC1-PIN20

5 4 2252 65405 Extended 46

alarm Harris main supply alarm

EAC1-PIN8 EAC1-PIN30

6 5 2254 65406 Extended 47

alarm

Harris dehydrator

excess run alarm EAC1-PIN26 EAC1-PIN12

7 6 2256 65407 Extended 48

alarm Free Shut Alarm EAC1-PIN7 EAC1-PIN12

8 7 2258 65408 Extended 49

alarm Free

Emergency Fan

EAC1-PIN25 EAC1-PIN12

9 15 2602 65409 Extended F5

alarm Free EAC1-PIN6 EAC1-PIN1

10 9 2268 65410 Extended 4E

alarm Intrusion alarm EAC2-PIN14 EAC2-PIN22

Guidance for Cut over and Alarm termination of MTNN Hybrid Project

11 24 2620 65411 Extended FE

alarm

High Temperature

alarm EAC2-PIN15 EAC2-PIN22

12 23 2618 65412 Extended FD

alarm Smoke/Fire

alarm EAC2-PIN16 EAC2-PIN22

13 22 2616 65413 Extended FC

alarm Smoke detector

failure alarm EAC2-PIN17 EAC2-PIN22

14 13 2598 65414 Extended F3

alarm Mains supply

alarm EAC2-PIN18 EAC2-PIN22

15 12 2596 65415 Extended F2

alarm Surge protection

failure alarm EAC2-PIN19 EAC2-PIN22

16 11 2594 65416 Extended F1

alarm Common genset

1 alarm D.G. Fail EAC2-PIN20 EAC2-PIN22

17 10 2592 65417 Extended F0

alarm Common genset

2 alarm EAC2-PIN1 EAC2-PIN21

18 20 2612 65418 Extended FA

alarm Low fuel alarm EAC2-PIN2 EAC2-PIN21

19 18 2608 65419 Extended F8

alarm Battery

discharge alarm Bat Load EAC2-PIN3 EAC2-PIN21

20 16 2604 65420 Extended F6

alarm Low voltage

alarm DC Under

Voltage EAC2-PIN4 EAC2-PIN21

21 14 2600 65421 Extended F4

alarm Exchange over voltage alarm

EAC2-PIN5 EAC2-PIN21

22 21 2614 65422 Extended FB

alarm Mains failure

alarm EAC2-PIN6 EAC2-PIN21

23 19 2610 65423 Extended F9

alarm System fault

alarm EAC2-PIN7 EAC2-PIN21

24 17 2606 65424 Extended F7

alarm Module fail

alarm PSU Alarm EAC2-PIN8 EAC2-PIN21

Table 2. hybrid alarms ports on hybrid equipments

Alarm port

(PSU Alarm) Alarm 3

Rectifier (Alarm cable 1) (High Temp) Alarm 5

(Emergency Fan) Alarm 6

(DC Under Voltage) Alarm 9

Bat Load SAU (Alarm cable 2)

Shut Alarm

D.G. Fail ATS (Alarm cable 2)

DC Aircon Battery Cabinet (Alarm cable 3)