{}
"Gang" describes the number of switches on the plate. They are sometimes called rockers, throws or dimmers, depending on how they operate, but still they just refer to the number of light...
The X/R ratio for the 1600kVA Trihal transformer can be calculated using the Trihal electrical characteristics (impedance & losses data) given normally in transformer datasheets (attached )...
In a correctly designed installation, a circuit-breaker is never required to operate at its maximum breaking current (Icu). For this reason, a new characteristic has been introduced which is the...
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....
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...
What is vector group for transformers? A vector group is the International Electrotechnical Commission (IEC) method of categorizing the high voltage (HV) windings and low voltage (LV) winding...
The power factor of induction motors varies with load, typically from around 0.85 or 0.90 at full load to as low as about 0.20 at no-load. At no load , an induction motor draws a large magnetizing...
the Breaker Earth Loop Impedance (Zs) is calculated as follows; Zs = Uo / Ia Where Uo is the voltage to earth and Ia is the current to trip the breaker in a given breaker disconnection time. Usually...
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...
The password can be reset by clearing the program inside the Zelio either by Transfering a new program to the Zelio Or Clearing the program that already exist by updating the firmware Kindly find the...
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...
