Monday, December 31, 2012

How to test OVP


ØCR has developed OVP testing kits for RRUs
Ø
ØBut there is no method for OVP testing in ERRU , same may be advised by RDSO.

Berth Reading Light

This is the luminare we use in new berth reading lights. Stock position detail can be opened in the Stock detail given on the right.

Sunday, December 9, 2012

Harness Couplers in Coaches

In pre-2011 coaches we used to have this kind of arrangement:

 Front side is power cable, back side is the control connectors.
 These days we have harting connectors for both power (440V) and control 110V connections to RMPU

 Recently we found some harting couplers failing in new coaches.






Inside view of the harting connectors.
Should we re-designh these connectors or simply relocate them to prevent failure due to water ingress?
See how they have failed:






















Sunday, December 2, 2012

Coach Certificates received for the First Time

It is mandatory for RCF/ICF to supply to zonal railways coach booklets/certificates for all new coaches. in order to ascertain 
  • Vendors of equipments
  • Warranty period
  • Governing Specification
A glimpse of the certificates received:

After hard chasing with RCF, we were successful in obtaining soft copies of the certificates.
There are still shortcomings in the document, but the process has begun.

Tuesday, October 2, 2012

Problem of Alternator Locking Pin

Since beginning of 2012, we are facing problem of failure of Alternator pin and its stopper ( Locking plate).

 Worn our locking plate and the pin shown above .
 Placement in bogie shown above. Welding of the plate may be noted by MTN staff.

The new stopper ( Locking plate shown above)