LSC stands for: Loss of Service Continuity category The IEC 62271-200 proposes user-oriented definitions and classifications intended to describe how a given switchgear can be accessed, and what will be the consequences on the installation.# When the accessibility of the various compartments are...

There are a number of issues: We do not manufacture a complete starter specifically for single phase motors but our 3 phase starters can be wired for single phase applications. Relative to their power output, single phase motors draw much greater current than 3 phase for 2 reasons: 1. The supply...

Attached is a .pdf file with pictorial diagrams (1) of how you would connect the four most common variants of a DOL starter. They show diagrams for 240 and 415 VAC control. The most common for small Direct On-Line Starters (DOLs) is 415VAC, as this requires no neutral to be fed to the starter....

Issue: After installing PowerChute Network Shutdown for an ESXi host, the PowerChute VM reports “PowerChute Services are disabled due to invalid credentials. Please refer to the PowerChute User Guide for recovery procedures.” Product: PowerChute Network Shutdown versions 4.4.x, 5.x Environment:...

If it is the first time you connect to the Modicon M172 via USB cable and the EcoStruxure Machine Expert HVAC asks you for credentials you will need to use this: User: administrator Password: password If you want to connect to the WebServer of the M172 and it asks you for...

Please find in this FAQ the files to download the installer of Vijeo Designer v5.0. Note: This software has been replaced by Vijeo Designer v6.2.

Issue You wish to upgrade your Network Management Card's (NMC) firmware or have been instructed to. You have a device such as a Smart-UPS, Smart-UPS Ultra, Easy UPS On-Line, Easy UPS 3-Phase, Rack PDU, AV unit, or environmental monitoring unit with an embedded NMC that you wish to upgrade. You had...

Issue: Because the Firmware Upgrade Wizard is the most universal and preferred method of updating, we recommend using the APC Firmware Upgrade Wizard whenever possible. The APC Firmware Upgrade Wizard guides you through the update process and provides a consistent update experience. The Firmware...

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, especially when those devices are powered from different sources or located in different places with varying...

In order to identify in our code which M172 model we are using we need to use the two (2) internal variables located in "Operators and blocks". The variables are Par_POLI (Polycarbonate code) and sysMSK (Mask number). If a M172 with 28IOs or 42IOs is connected then the variable "sysMSK" is equal to...

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 pipe. When you turn on a faucet, the water pressure makes the water flow out. Similarly, voltage...

For many years, mainland Western Europe has used a mains 3 phase electricity supply nominally rated at 380V AC 50Hz while the UK used 415V AC 50Hz. Currently, all Western European 3 phase supplies are classified 400V AC. In reality, there is no 400V AC supply unless you create one locally. 400V AC...

Issue: What is Power Factor Correction (PFC) - Does it help conserve energy? Answer: Explanation 1: Power Factor Correction (PFC) doesn't directly reduce the overall electric consumption of a device or system, but it does play a role in optimizing the efficiency of electrical systems, which can...

In the majority of cases, the overload of a star delta starter is fitted below the delta contactor with wiring connections to one side of each of the motor windings. The other side of the windings are connected to the line contactor. This means the motor load is split between 2 contactors but the...