No, a VSD is a stand-alone device, it needs nothing else to operate except a motor. There is no assembly, and one can buy integrated motor-VSD packages which can just be connected or have a plug fitted. As for the GU10 lamp, the product standard is mechanical and says very little about the contents, the electronics, the brightness, the filament or LEDs, the colour temperature, the life. All this is simply about "level playing fields" and interchangeability and stifles innovation. Some standards are useful to all, for example, Screw Threads. However, this does not prevent other threads from being used if they are more suitable for some purpose, although this tends to single-source replacements. Cars are particularly bad at having bolts that are non-standard, particularly in the head size, because this suits automated assembly, but not repairs. BS7671 is becoming very prescriptive about items that really design decisions, usually on the grounds of alleged "safety" improvement, the real question is "exactly what degree of safety and risk" is reasonable and this needs to be exactly defined. If the same were applied to many human endeavors, most sport would never happen because people hurt themselves, some die, transport would be right out.
No, a VSD is a stand-alone device, it needs nothing else to operate except a motor. There is no assembly, and one can buy integrated motor-VSD packages which can just be connected or have a plug fitted. As for the GU10 lamp, the product standard is mechanical and says very little about the contents, the electronics, the brightness, the filament or LEDs, the colour temperature, the life. All this is simply about "level playing fields" and interchangeability and stifles innovation. Some standards are useful to all, for example, Screw Threads. However, this does not prevent other threads from being used if they are more suitable for some purpose, although this tends to single-source replacements. Cars are particularly bad at having bolts that are non-standard, particularly in the head size, because this suits automated assembly, but not repairs. BS7671 is becoming very prescriptive about items that really design decisions, usually on the grounds of alleged "safety" improvement, the real question is "exactly what degree of safety and risk" is reasonable and this needs to be exactly defined. If the same were applied to many human endeavors, most sport would never happen because people hurt themselves, some die, transport would be right out.
