ACB Tripping settings
ACB tripping settings Acb has 6 adjustable tripping settings 1 Long time delay (Tr ) 2 Short time delay( Tsd ) 3 Earth fault delay (Tg) 4 Long time (Ir) 5 Short time (Isd) 6 Earth Fault (Ig) Long time is for maximum overload capacity . Short time is for short circuit current Earth fault is for earth fault current . As per thumb Rule : 1. Long time set at 0.8 means 80% of full load current .Until this level of current breaker carry without tripping . Above 0.8 Acb trips. Long time delay causes the breaker to wait for certain time to allow heavy temporary inrush currents to pass away. Generally long time delay is set at 4 Sec. 2. Short time set at 0.6 means 60% of full load current . It determines the Amount of Current the Breaker will carry for short time period. Generally short time delay set at 0.2 sec. 3. Earth Fault set at 0.3 or 30% of fault current . It controls the amount of Ground Fault current that will caus...
We are manufacturer of street lighting poles CCTV camera GDR fire and gas detector motor control station LCS pole hot dip galvanized and painted tubular octagonal and conical with J bolts complete solution threading rod, cable drum jack, rollers, overhead line tower, solar poles in Pakistan.
ReplyDeleteuni strut channels and accessories/
Alfazal Engineering is a Steel Fabrication company, offering a large variety of products & services and cable trays in Pakistan at a very low price. Our electrical wiring used in buildings, as a cable tray system which is supports insulated electrical cables used for power distribution, control, and communication. Best cable tray manufacturer in Lahore Pakistan.
ReplyDeleteCable Tray in Pakistan