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Issue: How to calculate the heat dissipation in BTU per hour Product Line: All Schneider product lines Cause: The calculation to determine the BTU for adding a piece of equipment to a cabinet to...
IEC 60947 define ICS as the "rated service short-circuit breaking capacity" while ICU as the "rated ultimate short-circuit breaking capacity". The Ics is a percentage of Icu. For...
The earthing schemes and sizing differ according to the earthing scheme (TT,TN-C,TN-S,IT...etc). According to the required earthing scheme, you should size your earthing and neutral conductors. IEC...
The minimum breaking current of a fuse (or I3) is the minimum current value which causes the fuse to blow and break the current. For our range of MV fuses, these values are between 3 and 5 times the...
Protection used to check that remanent voltage sustained by rotating machines has been cleared before allowing the busbar supplying the machines to be re-energized, to avoid electrical and mechanical...
The bottom span 4 mA expresses a minimum signal value than a broken wire. Since the loop current never falls to zero, it can be loop powered, allowing for a two-wire circuit. 20 mA is considered an...
Please check the link below to download Unity Pro S/L/XL V8.0 trial version , taking into consideration that the Unity Pro trial software will run for 21 days before it expires....
The restricted earth fault protection (ANSI 64REF) can be applied if the downstream power system neutral is earthed at the transformer (document attached). This is a differential protection function...
issue: Customer wants to know the value of the symmetrical and asymmetrical breaking current of the circuit breaker and what do they mean. Environment: Circuit Breaker Resolution: - Symmetrical...
Issue: Testing phase loss on a meter doesn't result in a null voltage reading. Environmnet: EasyLogic Series Power Meters PowerLogic Series Power Meters Resolution: The voltage seen is what we...
The selection should be done after derating the Circuit Breaker taking into consideration voltage variation and capacitors tolerances that could increase nominal current up to 1.5In. The Derating...
