100 VA Mobile/laptop charging point failure in train 12138 yesterday

 Train was detained in BPL division for 32 minutes as S4 coach( CN11269) ICE make (SrNo110612516) failed. Smoke came out of the inverter.

Two of the three capacitors appear failed (top protruded), which might have caused bursting of fuses.

From front, the inverter appears socket appears normal.

This inverter is protected by 2 Amps glass fuse and the 35 swg (16A) wire fuse in side wall FDB.

This equipment is manufactured with spec RDSO/PE/SPEC/TL/0142-2010 (Rev-0). Having 2 years warranty from date of commissioning.

Makes in the system are: ICE,Signotron,Saranya, and HYTech.

Other System of Mobile Charging points are:

• 2.5 KVA inverter for entire coach and then 18 sockets.(spec RDSO PE/SPEC/TL/0131-2009 (Rev-0)
• Since chargers work on 110 V dc also, just provide 110 V dc socket (with 0.5 amps fuse) from fan supply.(spec RDSO PE/SPEC/TL/-0165-2011)(rev-0)

500 KVA alternator repair

Corroded stampings. Staggering required we came to know pretty late.

Rotor and stator exciter.

It will need balancing lateron.