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...

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...

Phase-to-phase short-circuit protection, for generators. The current tripping set point is voltage-adjusted in order to be sensitive to faults close to the generator which cause voltage drops and...

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...

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...

Earth fault protection based on measured or calculated residual current values: ANSI 50N/51N: residual current calculated or measured by 3 phase current sensors ANSI 50G/51G: residual current...

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...

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...

Apa alternatif replacement battery UPS SURT15KRMXLI jika APCRBC140 tidak ready stock? ======================================================================= Untuk alternatifnya bisa menggunakan...

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...

Issue: Having two different values for RL ( Lead resistance from the CT to the relay); RL from the phase CT to the relay and RL from the neutral point CT to the relay Environment: Protection Function...

Issue: What is Power Factor Correction (PFC) - Does it help conserve energy? Answer: Power Factor Correction (PFC) doesn't directly reduce the overall electric consumption of a device or system,...

Issue: How do I remember the relationship of voltage, current and resistance in an electrical system? Environment: N/A Solution: Voltage (unit of measurement - volt) is like the water pressure in the...

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...

Register the Easy UPS with APC by Schneider Electric customer support. This is a one time process required to be done only during initial installation. The Easy UPS output cannot be turned on without...