What is the Utilisation cat for NS MCCB and ICS and ICU percentage ?

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...

Please advice if RCCB 30mA sensitivity is enough for human safety or not?

Regarding the residual current devices ,are used mainly for human protection against direct and indirect contact,and they are defined by their sensitivity and interference immunity (type AC,A,SI and...

What is the purpose of Line/Motor Choke ?

Reduction of overvoltages at motor terminals. Reduction of current harmonics. Extra Motor and Drive Protection by blocking Higher AC frequencies and Surge Currents. Increasing the Lifetime of the...

What is the replacement of the contactor LC1FH43 ?

The replacement of the contactor LC1FH43 is the reference LC1F265

What is the meaning of IP69K ?

For the IP degree, IP69 K means the following 6 means Dust tight, No ingress of dust; complete protection against contact (dust tight) 9K means Powerful high temperature water jets, Protected against...

What's the difference between IP & IK standards?

IP standards are user to describe the degree of protection of objects against solid bodies and liquids. The first number describes the protection against solid bodies, while the second number is for...

What is the difference between SR2 and SR3 zelio logic ?

SR2 is the compact range of Zelio Logic in which you cannot add any extensions of I/O modules or communication modules, While SR3 is a modular range and you can add I/O extension modules and...

What is masterpact M16H1 replacement ?

It can be replaced by Masterpact NW 1600 H1 .

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Learn more through our Generic Knowledge FAQsGeneral Knowledge
What is meant by Symmetrical and Asymmetrical breaking currents?

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...

How to reset Zelio logic password?

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...

What is the selection criterion of Circuit Breakers for the Capacitor bank...

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...

In a 3 phase system, why does the meter still show voltage reading on one...

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...

Which RL(lead resistance from CT to relay) is to be used in Knee Voltage...

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...

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