it is not the first time ET WAP4 did it
6th of April 2016, ET WAP4 similar performance. check this link click here
so dont be surprised ltt nzm inaugural me ET kyu dia gaya tha.
WAP4 is termed best for CR just like WCAM/3
ye...
more... bhi padh lo AJNI WAP7 wheel slipping in CR ghat with 20 coach BSP Rajdhani
20-Jun-17 12625 Ind 50 CR NGP 30296 AQ WAP7 3-Phase IOH, AQ, Mar 4 2016 / IB, AQ, Jun 3 2017 Traction converter GTO (SR) (T.No.12441, BSP-NDLS, load 20B) detained at Teagaon & Multani for attaching and detaching banker for gradient 1:70 (Ghat section) due to TB-2 isolated Ex.NRKR. IOH-04.03.16, IB-03.06.17, TI/AQ-19.06.17. Major/sec- NGP-AMF, Minor/sec- Teagaon-Multani (TEO & MTY). Time: 22.30-22.37 at TEO, 22.51-22.52 at MTY. (Total 7+2=9). 1 12269/35, Loco was checked at ELS/AQ found normal. Software problem. Similar incidences have occured many a times with WAP-7 locos in NGP division in ghat section. Report is being sent to RDSO for investigation.