bluish light
yellowish light
reddish light
greenish light
400 to 600 V
400 to 550 V
400 to 500 V
400 to 450 V
at a very high pressure
at a high pressure
at a medium pressure
at a low pressure
To limit the power factor
To limit the starting current
To limit the voltage
To limit the energy
9000 hrs
8500 hrs
8000 hrs
7500 hrs