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What is the difference between Type 1 & Type 2 coordination?

Issue: Type 1 & Type 2 short circuit coordination comparison Product Line: Starters and Contactors Environment: Products sold in North America Resolution: Type I - Under short circuit conditions,...

How does an undervoltage accessory trip a circuit breaker?

Issue: How does a UVR undervoltage work? Product Line: Circuit Breakers Resolution: An undervoltage trip device is an optional accessory in a circuit breaker that mechanically trips the breaker when...

Can a 3-pole breaker be used in a 2-pole application?

Issue: Three pole breaker use in two pole (single-phase) application Product Line: MCCB Environment: Powerpact and Masterpact Resolution: A 3p breaker can be used on a 3 phase system using either 2...

What are the Rated short-circuit making capacity (Icm) and Rated...

Rated short-circuit making capacity (Icm) and Rated short-time withstand current (Icw) values for Compact NSX Switch-disconnectors can be found in Compact NSX Catalogue . Icw and Icm values are...

What is the difference between the iC60N and the iC60H Circuit Breakers?

The differences between the iC60N and iC60H series of circuit breakers is the iC60N has a breaking capacity of 6kA at 240/415V , C Curve in accordance with AS/NZS60898.1, where as the iC60H has a...

What is the difference between the iC65 and the iC60 circuit breakers?

The Acti9 iC65 range of circuit breakers have the same external dimensions as the iC60 range but are not approved for use or sale in Australia. Only the Acti9 iC60 range of miniature circuit breakers...

What is the difference between a shunt and undervoltage trip for the...

MN undervoltage release The MN release opens the circuit breaker when its supply voltage drops to a value below 35% of its rated voltage Un. Undervoltage tripping, combined with an emergency-off...

What does B,C,D curve mean for Acti 9 MCB?

B Curve means the MCB trips between 3-5 times full load current. It is mainly used in residential applications where loads are resistive e.g. lighting fixtures, domestic appliances with low surge...

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Learn more through our Generic Knowledge FAQsGeneral Knowledge
What are the effects of dV/dt on a Motor when using a VSD?

As there is an impedance mismatch at the termination of the motor cable to the motor, there will be a reflected wave which travels back along the motor cable causing overvoltage’s. Overvoltage’s on...

Apa alternatif replacement battery UPS SURT15KRMXLI jika APCRBC140 tidak...

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

What is Power Factor Correction (PFC) - Does it help conserve energy?

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,...

What is the difference between SQL Server server names and SQL Server...

Numerous Schneider Electric Software use Microsoft SQL Server for logging and reporting of data. Examples include EcoStruxure Power Monitoring Expert, EcoStruxure Building Operations - Report Server,...

What is an Electrical "Ground Loop" - How does it affect my equipment?

Issue: What is an electrical "ground loop" and how does it affect my equipment? Environment: Ground loops can occur in any situation where multiple electrical devices are interconnected,...

Why choose Type B RCD for 3 Phase Variable Speed Drives?

For the 3 Phase Variable Speed Drives, the RCD type B or type B-Si is particularly suitable. It protects against fault currents with DC offset, which is true for three-phase power converters. In...

What is Modbus and How does it work?

What is Modbus? Modbus is a serial communication protocol developed by Modicon published by Modicon® in 1979 for use with its programmable logic controllers (PLCs). In simple terms, it is a method...

Voltage, Current and Resistance Explained

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...

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