Motors are by dick kerr , metropolitan vickers and english electric , and controllers are by dick kerr , english electric and maley and taunton . during 1999 , 74 trams had rotary controllers by electronic speed controllers incorporating deadmans handles and were completely rewired with lsf cabling and fitted with traction grade convertors 在1999年，电车公司将74辆电车的旧式车速控制系统，改装成配备无人操控装置的电车电子速度控制器，并更换全新的低烟阻燃无毒电线及装置牵引机车专用的电源转换器。
2.
Motors are by dick kerr , metropolitan vickers and english electric , and controllers are by dick kerr , english electric and maley and taunton . during 1999 , 74 trams had rotary controllers by electronic speed controllers incorporating deadmans handles and were completely rewired with lsf cabling and fitted with traction grade convertors 在1999年，电车公司将74辆电车的旧式车速控制系统，改装成配备无人操控装置的电车电子速度控制器，并更换全新的低烟阻燃无毒电线及装置牵引机车专用的电源转换器。
