MT/T 1041.2-2007 Technical conditions for electrical speed control devices of coal shearers Part 2: Frequency conversion speed control devices (English Version)
2008MT/T 1041.2-2008 Specification for adjustable speed electrical equipment of shearer.Part 2: Speed-adjustable equipment by variable voltage variable frequency
2008MT/T 1041.2-2007 Technical conditions for electrical speed control devices of coal shearers Part 2: Frequency conversion speed control devices