Wagon Report
Compiled by Steven Fredrick Lappage
ERMEWA’S rake of JNA-T box opens fitted with intelligent wagon technology are Nos. 81 70 5500 0019/002-7/009-2/010-0/012-6/048-0.
Operated by Tarmac, the onboard diagnostic equipment monitors load-status, plus any issues around maintenance. Power for the 24 volt system is supplied from the haulage locomotive via a jumper cable.
This contrasts with the approach taken by VTG Rail UK with its‘i-wagon’ installation. Being trialled by Tarmac and Mendip Rail, this system has axle-end mounted generators supplying power to individual wagons. Advanced diagnostics measure braking performance plus issues relating to hot axleboxes, wheelslide, axle-locking and braking performance.