An interesting view from network catenary near railway station Elin Pelin.The reason is poor contact resistance in circuit breaker.The poor contact provided the light arch, its contacts are melting, the arc is greater transfer of pillars and earthed substation.A video movie about this effect , you can see on this adress:
http://www.dailymotion.com/video/xeyera_p9250009_travel


Digital photo Veselin Malinov , e-mail: malinov.veselin99@gmail.com Website: http://nightphotos.fotopic.net