... equipment 4.As per IEC736,up to class 0.05 Single Phase meter test equipmentFunctions And Features 1-System hardware:1.1 ... (1.15)Un,1.1Un,1.0Un,0.8Un - keyboard phase point in common use: 0.5C,0.5L, 1, 0 ... signal and TTL electrical pulses signal.1.11 emergency stop/start buttons Single Phase Meter Test Equipment