Question 1

How can I calculate the dissipated power (heat loss) inside a Blokset panel?

Accepted Answer

The amount of heat loss depends on the constituents of the panel (horizontal busbars, vertical busbars, circuit breakers, capacitors for power factor correction...etc). According to the heat dissipated from the panel. The attached calculator is a spread sheet used to calculate the heat loss in Blokset.

Question 2

What is the definition of ANSI 64REF - Restricted earth fault differential?

Accepted Answer

Detection of phase-to-earth faults on 3-phase windings with earthed neutral, by comparison of residual current calculated from the 3 phase currents and residual current measured at the neutral point.Characteristics instantaneous trippingpercentage-based characteristic with fixed slope and adjustable low set pointmore sensitive than transformer or machine differential protection.

Question 3

What is the Restricted earth fault protection and how to implement on Low Voltage ?

Accepted Answer

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 that detects the difference between residual currents measured at the neutral earthing point and at the three-phase output of the transformer.Please find attached document describing how to implement the estricted earth fault protection with Masterpact Micrologic 6.0

Question 4

How to download Schneider Electric CAD files?

Accepted Answer

If you know the product part number, or a partial number, type it into the website search bar at the top of the page and click through to the product datasheet page. You can now skip to step 6. > If you don't know the product part number, you can navigate to the product page like this...1) Visit the Schneider Electric Website and select your country2) Click the 'Products' TAB in the main menu.3) Click 'Circuit Breakers & Switches' (or any other category). 4) Scroll to find your product range, 'PowerPacT B' (or any other product range). 5) Click 'BDL36100' (or any other product part number). 6) You should now see all technical information about the specific product part number. (Some scrolling necessary!)(You should be on a page like this: https://www.se.com/us/en/product/BDL36100/7) Scroll down to the Main Documents section and Click the 'CAD' button. 8) A pop-up window will appear. Select the preferred CAD file format or choose to download all.

Question 5

How to perform a factory reset on SmartX IP Controller devices?

Accepted Answer

Issue: Steps for SmartX IP controller devices (MP-C, MP-V, IP-IO, RP-C). Product Line: EcoStruxure Building Operation, SmartX IP controller devices Resolution: In WorkStation, if your SmartX IP controller device seems completely unresponsive, perform a factory reset to restore the device to a state where it can be successfully commissioned. After you release the reset button, a factory reset may take up to 30 seconds to process. All diagnostic logs and the database are erased during a factory reset. By contrast, controller firmware does not revert and remains at the same active level. To perform a factory reset using the hardware reset button, press and hold the reset button for 20 to 29 seconds. If MP-C or IP-IO is equipped with the MP-C Display add-on module, a count-up timer and progress bar are displayed to assist in reset selection. There is also a reset mode indicator that lets you know which reset occurs if you release at that time. The below figures show the location of the reset button on different SmartX controller devices: Note: From EcoStruxure Building Operation v3.1+, there is a facility to remotely Factory Reset a SmartX IP Controller device, check below KB article for more information: https://community.exchange.se.com/t5/Building-Automation-Knowledge/Remote-Factory-Reset-of-SmartX-IP-controller-MPX-RPC-IPIO/ta-p/195345

Question 6

How do I upgrade the firmware on an APC Network Management Card (NMC) or NMC embedded device?

Accepted Answer

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 a problem with a previous upgrade attempt and need the instructions in order to correct it.Your device came pre-loaded with the wrong application and you need to load the correct application. Product Line Network Management Card 2 - AP9630, AP9631, AP9635Network Management Card 3 - AP9640, AP9641, AP9643Network Management Card 3 for Easy UPS – AP9544, AP9547Network Management Card 4 – AP9644 Environment All serial numbersAll firmware versions (unless otherwise noted) CauseUsers may wish to upgrade their firmware to take advantage of enhancements, bug fixes, or new features. Also, sometimes a firmware upgrade can be interrupted or unsuccessful and these instructions can be followed to remedy the problem.Typically, these upgrades do not require the device the Network Management Card is installed in to be powered down or cause unnecessary downtime.Lastly, downgrades are not typically recommended but the manual methods can also be used to do those in certain circumstances.NOTE: To upgrade to firmware version 3.0 and higher for NMC3 for Smart-UPS, Easy UPS On-Line, and rPDU, the only supported method is the Secure NMC System (SNS) Tool, which requires a subscription to access the firmware. For more information, see www.se.com/secure-nmcResolutionFind Correct FirmwareWhen upgrading the firmware on your Network Management Card (NMC), you will need to determine which files pertain to your application. Begin by determining what model of NMC you have. AP9630, AP9631, AP9635 - Network Management Card 2AP9641, AP9641, AP9643 - Network Management Card 3AP9544, AP9547 - Network Management Card 3 for Easy UPS The application firmware required depends on what product your NMC is installed in. Some examples include: For NMC2 devices: SUMX for Smart-UPS 1-PhaseSY for Symmetra 1-Phase UPSSY3P for Symmetra 3-Phase UPS For NMC3 devices: SU for Smart-UPS 1-PhaseSY for Symmetra 1-Phase UPSSUCAN for Smart-UPS UltraRPDU2G for rPDU (Rack Power Distribution Unit)SY3P for Symmetra 3-Phase UPS For Easy UPS NMC devices: EU1P for Easy UPS 1-PhaseEU3P for Easy UPS 3-Phase NOTE: These instructions can also be used in devices that have embedded (mini) versions of the above Network Management Cards.NOTE: If you are interested in upgrading multiple devices at a time, refer to knowledge base FA156117 NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions.Download Firmware Navigate to www.apc.com/secure-nmc and click the Software and Firmware tab.Find and download the latest firmware file for your NMC. NOTE: To upgrade to firmware version 3.0.0 and higher for NMC3 for Smart-UPS, Easy UPS On-Line, and rPDU, the only supported method is the Secure NMC System (SNS) Tool, which requires a subscription to access the firmware.Alternatively, visit https://www.apc.com/us/en/download/software-firmware/ and enter your NMC part number (e.g. AP9641), click the Firmware category, and download the latest firmware file. NOTE: Firmware updates of NMC3 or NMC4 for 3-Phase UPS and PDU can only be done by Schneider Electric qualified services representatives. Please contact your local Schneider Electric Service Representative or Schneider Electric Certified Service Partner for details. Update FirmwareThere are different ways that you can upload the firmware for each device. Please choose a method that works best for you. NOTE: For users upgrading (or downgrading) their Network Management Card 2 device from v5.X.X to v6.X.X, please review Knowledge Base article FA167693 to understand several important considerations prior to beginning any of these steps. Secure NMC System (SNS) Tool - Network Management Card 3 (for firmware versions 3.0 and higher)Universal Serial Bus (USB) 1.1 - Network Management Card 2 and 3 devices with a USB port (AP9631, AP9635, AP9641, AP9643 and RPDU devices (RPDU2G) and Smart-UPS Ultra devices with embedded NMC3 – for firmware versions 2.5 and lower)Firmware Upgrade/Update Utility - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)XMODEM - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)Manual (FTP prompt) - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower)Manual - Secure CoPy (SCP) - Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 and lower) Secure NMC System (SNS) Tool - Network Management Card 3 (firmware versions 3.0 and higher) Download the Secure NMC System (SNS) Tool from the APC/Schneider Electric website. As of SNS Tool v4.0, all units can be upgraded using the same program, excluding PDU's in an NPS setup. Part # (SKU) Secure NMC System (SNS) Tool SFNMC3FMTSU Secure NMC System Tool for Smart-UPS SFNMC3SUCAN Secure NMC System Tool for Smart-UPS Ultra SFNMC3RPDU Secure NMC System Tool for PDU SFNMC3FMTEU1PSecure NMC System Tool for Easy UPS On-Line NOTE: There are different versions of the SNS Tool depending on the application you are running on your NMC3. To access the firmware in the SNS Tool, you need a valid Secure NMC subscription. See www.apc.com/secure-nmc for more information. Double-click the self-extracting ZIP file. Add devices to the SNS Tool: To add one at a time: Click Add Devices and enter: the NMC’s IP address/FQDN/hostname the protocol and port to transfer the firmware file. SCP is recommended as it’s more secure than FTP. Note: The selected protocol must also be enabled on the NMC3. the user name and password To add more than one at a time: Open the devices.csv file in the downloaded SNS Tool directory and add the device details. Note: Lines that start with a semi-colon ; will not be processed. Save and close the devices.csv file. In the SNS Tool, click Add Devices. Click Import Device File – this button only appears if data is detected in the devices.csv file. Click Query Devices. Click Query Devices. Click Add Devices. Activate licenses for selected NMCs: Click on NMCs in the Device List and click License Devices. If you have more than 1 NMC in the Device List, use Ctrl+click to multi-select. Enter the Activation ID from the purchased Secure NMC System subscription and click Confirm & Activate. (If you have the SNS Tool installed on another PC and want to check if any of the NMCs are already licensed, you can click Sync License(s) to do so). Update firmware for selected NMCs: Click on NMCs in the Device List and click Update Firmware. If you click Update Firmware without selecting any NMCs from the Device List, the Firmware Management Tool will automatically select all of the NMCs that are eligible to update (Device Status = Ready for update). Universal Serial Bus (USB) 1.1 – Network Management Card 2* devices with USBNOTE: *If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2. NOTE: Some USB flash drives are not compatible with the NMC2 devices. Secondly, the flash drive’s file system must be FAT, FAT16, or FAT32. (NTFS will not work).1. Obtain the latest firmware files from apc.com and extract them to a folder. Please note, USB may not allow for a firmware downgrade. You must use a manual method to accomplish a downgrade.2. Create a folder on your USB flash drive called apcfirm .3. From the latest firmware files that you downloaded, add to the apcfirm folder the binary files for the firmware modules that you would like to upgrade. Some examples of the binary files for the three firmware modules follow: Firmware ModuleBinary File APC Boot Monitor apc_hw05_bootmon_109.bin APC Operating System (AOS) apc_hw05_aos_712.bin Application Module apc_hw05_sumx_712.bin Language Pack* sumx_712_frFrdeDeruRuitItesEs.lpk *Optional language pack upgrades/changes are supported via USB if the device you’re upgrading already has BootMonitor v1.0.8 or higher (BootMonitor performs the upgrading function). NOTE: Not all NMC2 applications support language packs. 4. Use a text editor such as Microsoft Notepad to create a file called upload.rcf. NOTE: (Ensure that file extensions are visible so that your file does not get named upload.rcf.txt. In Windows, this option can be edited in Folder Options->View->Hide extensions for known file types within Control Panel. Make sure that option is unselected.) Add to the file a line for each firmware module that you want to upgrade as shown below (replace “xx” with the version of firmware you will be upgrading to): BM=apc_hw05_bootmon_xx.binAOS=apc_hw05_aos_xx.binAPP=apc_hw05_sumx_xx.binLANG=sumx_xx_frFrdeDeruRuitItesEs.lpk 5. Add the upload.rcf file to the apcfirm folder on the flash drive.6. Insert the flash drive into the USB port on the NMC2.7. Press and release the pinhole Reset button on the NMC2 for the USB upgrade process to begin. (This will only reboot the management interface of the NMC2 and not reboot your device/load.) The NMC2 status LED, located on the RJ-45 Ethernet jack, will begin to blink amber during this procedure and rotate through a few color flashing patterns while transferring the different files. NOTE: If you have an AP9631 or AP9635 removable NMC2 UPS SmartSlot card, you can also remove and re-insert the card into the UPS SmartSlot, effectively rebooting the NMC2 and beginning the USB upgrade process this way.8. Wait for 2-5 minutes for the upgrade to complete. Remove the flash drive from the USB port and check your firmware version. On a Rack PDU specifically, the LCD display will show the firmware version for three seconds and then will resume normal operation, at which time you can also remove the flash drive.Universal Serial Bus (USB) 1.1 – Network Management Card 3 devices with USB (firmware versions 2.5.0 and lower)This feature is available in bootloader version v1.3.3.1 and higher. Before starting the transfer, make sure the USB drive is formatted in FAT, FAT16 or FAT32. Download the firmware upgrade file.Create a folder named apcfirm on the USB flash drive.Place the .nmc3 file in the apcfirm directory.Use a text editor to create a file named nmc3.rcf. (The file extension must be .rcf, not .txt for example.)In nmc3.rcf, add a line for the firmware package to be upgraded. For example, to upgrade Smart-UPS application version v1.5.0.6, type: NMC3=apc_hw21_su_2-5-0-6.nmc3Place nmc3.rcf in the apcfirm folder on the flash drive.Insert the flash drive into a USB port on your NMCReboot the NMC and wait for the card to reboot fully. Firmware Upgrade/Update Utility – Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)If you have a Windows computer, you can use the Firmware Upgrade Utility (NMC2)/Firmware Update Utility (NMC3) to upgrade the firmware.If you have any other type of computer, then you will need to manually upload each firmware file to the Network Management Card. Go to the XMODEM or Manual sections below for additional instructions.NOTE: For any firmware downgrades, which are not typically recommended, you will need to choose a new method. The Wizard will block any downgrades. Unfortunately, loading applications for different devices may also have encounter this block if AOS versions are not the same.NOTE: *If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2. Click on the firmware executable once the download is complete. The executable will proceed to unzip firmware files and extract them. You can specify the location where you want the firmware to download to.Once the firmware has been saved, the executable will prompt you for the IP address of the Network Management Card that you want to upgrade.Once you enter the IP address, click enter.You will be prompted for a username and password. This must be the Super User Account or an Administrator account. By default, the Super User username and password is apc. Press enter.If using the NMC2 Firmware Upgrade Utility, seen below, you will be prompted to enter the IP address and username and password. You can enter those and press Upgrade Now. If using the NMC3 Firmware Update Utility, seen below, you will be prompted to enter the IP address and username and password. You can enter those and press Start Update. The firmware executable will then begin the upgrade process. This process may take as long as 5-7 minutes to finish. Once finished, close the executable.Verify that the firmware upgrade was successful. Log into the Web UI and navigate to About -> Network. The updated firmware should be listed on this page. Alternatively, verify via Telnet, SSH, or local console connection on the main page after log in. XMODEM – Network Management Card 2 and 3 (for NMC3 firmware versions 2.5 or lower) Network Management Card 2 (AP9630, AP9631, AP9635)*NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.NOTE: If you wish to downgrade from v6.X.X to v5.1.X firmware on NMC2, please make sure you review Knowledge Base Article FA167693 prior.1. Select a serial port at the local computer and disable any service that uses the port.2. Connect the provided serial configuration cable (APC part number 940-0299) to the selected 2.5mm Tip-Ring-Sleeve Console port on the Management Card itself. 3. Run a terminal program such as HyperTerminal, and configure the selected port for 57600 bps, 8 data bits, no parity, 1 stop bit, and no flow control. NOTE: certain terminal emulation programs, such as PuTTy, do not support the XMODEM protocol.4. Press the Reset button on the Management Card or reseat the Network Management Card in the SmartSlot, then immediately start pressing the key repeatedly until the Boot Monitor prompt displays: BM> . Also, once you have entered Boot Monitor mode correctly, the Network Management Card's status LED will flicker amber in color. (BootMonitor mode is required on NMC2 for an XMODEM upgrade in any situation.)5. Type XMODEM, then press ENTER. You will begin to see CCCCC scroll across the screen to indicate the Network Management Card is ready to receive a file.6. From the terminal program’s menu, select XMODEM, then select the binary bootmonitor firmware file to transfer using XMODEM. After the XMODEM transfer is complete, the Boot Monitor prompt returns.NOTE: If the boot monitor module must be updated, a boot monitor module is included in the firmware release. Otherwise, the boot monitor module that is installed on the card is compatible with the firmware update. If there is no included bootmonitor file, upgrade the AOS binary first.7. To install the application module, repeat step 5 and step 6. In step 6, use the application module file name.8. Type reset or press the Reset button to restart the Management Card.If the Management Card is installed in an Expansion Chassis or Triple Expansion Chassis, connect the provided configuration cable (APC part number 940-0299) to the serial port at the Management Card, or connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port at the expansion chassis.If you connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port of the expansion chassis, select 115200 bps.Network Management Card 3 (AP9640, AP9641, AP9643)1. Select a serial port at the local computer and disable any service that uses the port.2. To connect to a NMC3, use the provided micro-USB cable (APC part number 960-0603).3. Run a terminal program such as HyperTerminal, and configure the selected port for 57600 bps, 8 data bits, no parity, 1 stop bit, and no flow control. NOTE: Certain terminal emulation programs, such as PuTTy, do not support the XMODEM protocol.4. Press the Reset button on the Management Card or reseat the Network Management Card in the SmartSlot, then immediately start pressing the key repeatedly until the Boot Monitor prompt displays: BM>. Once you have entered Boot Monitor mode correctly, the Network Management Card 3's status LED will be solid orange in color. (Boot Monitor mode is required on NMC3 for an XMODEM upgrade in any situation.)5. Type XMODEM, then press ENTER. You will begin to see CCCCC scroll across the screen to indicate the Network Management Card is ready to receive a file.6. From the terminal program’s menu, select XMODEM and select the .nmc3 file to transfer. After the XMODEM transfer is complete, the Boot Monitor prompt returns.7. Type reset or press the Reset button to restart the Management Card.If the Management Card is installed in an Expansion Chassis or Triple Expansion Chassis, connect the provided configuration cable (APC part number 940-0299) to the serial port at the Management Card, or connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port at the expansion chassis. If you connect an RS-232 configuration cable (APC part number 940-0024) to the DB-9 serial port of the expansion chassis, select 115200 bps. Manual (via FTP) - Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)Network Management Card 2NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.1. To perform a firmware flash with this method the Management Card must have been previously configured with a System IP, Subnet Mask, and Default Gateway and attached to the network. In addition, FTP Server must be enabled.2. Open an MS-DOS command prompt window on a PC which is connected to the network. Change to the directory which contains the firmware upgrade files. Some example commands which need to be entered are shown in bold in order to change directories. Please note, this is just an example. You may need to enter a full path to a directory which requires different syntax.C:\> cd apcC:\apc> 3. Open an FTP client session.C:\apc> ftp 192.168.1.100 (192.168.1.100 being the IP address of the web card) 4. Log in. This must be the Super User Account or an Administrator account. By default, the Super User username and password is apc. Press enter.Typically, the password will appear on the screen as *** or not at all as you type. Connected to 192.168.1.100220- APC FTP server ready.User (192.168.1.100 :(none)): apc331 User name okay, need password.Password: apc230 User logged in, proceed.ftp> 5. Upgrade the bootmonitor file first. If the boot monitor module must be updated, a boot monitor module is included in the firmware release. Otherwise, the bootmonitor module that is installed on the card is compatible with the firmware update and can be skipped. If there is no included bootmonitor file, or you are using NMC1, upgrade the AOS first. The AOS module is the file with the AOS prefix. ftp> bin (specifies binary transfer mode which is required)200 Command okay.ftp> hash (optional - enables hash mark printing as a way of monitoring file transfer progress)ftp> put aosxx.bin (xx being the version number downloaded) Tip: With Windows Command Prompt in most OS versions, besides Vista, command prompt, you can drag and drop the file onto the command prompt window which will paste the full file path automatically here for you.200 Command okay.150 Opening data connection for aos301.bin###############################################################250 Requested file action okay, completed. Management Card Rebooting....327680 bytes sent in 5.99 seconds (54.70 Kbytes/sec)ftp> 6. Close the FTP client session to allow the card to continue rebooting as your FTP session will be disconnected and need to be re-opened for any further transfers. ftp>byeC:\apc> 7. Wait about 20 - 30 seconds.8. Repeat Steps 3 - 8 again for the application module (sumx for Smart UPS/Matrix, sy for Symmetra, etc). In Step 6, substitute the sumx module file name, in place of the AOS module file name. Or the sy prefix for the Symmetra. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure.NOTE: If using MacOSX, the full filepath of the destination folder will need to be included in the "put" command. An example command would read:ftp> put /Users/Admin/Downloads/aosxx.bin /aosxx.binNetwork Management Card 31. To perform a firmware flash with this method the Management Card must have been previously configured with a System IP, Subnet Mask, and Default Gateway and attached to the network. In addition, FTP Server must be enabled.2. Open an MS-DOS command prompt window on a PC which is connected to the network. Change to the directory which contains the firmware upgrade files. Some example commands which need to be entered are shown in bold in order to change directories. Please note, this is just an example. You may need to enter a full path to a directory which requires different syntax.C:\> cd apcC:\apc>3. Open an FTP client session.C:\apc> ftp 192.168.1.100 (192.168.1.100 being the IP address of the web card) 4. Log in as Administrator (apc is the default user name and password). 5. Upgrade the firmware:ftp> bin (specifies binary transfer mode which is required)ftp> hash (optional - enables hash mark printing as a way of monitoring file transfer progress)ftp> put apc_hw21_SU_xx.nmc3 (xx being the version number downloaded)6. When FTP confirms the transfer, type quit to close the session. 7. Wait about 20 - 30 seconds. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure.Manual (via Secure CoPy) - Network Management Card 2 and 3* (NMC3 firmware versions 2.5.0 and lower)Network Management Card 2NOTE: If you have an AP9635 installed in a Symmetra PX 250/500, you have a Network Management Card 2 but MUST contact APC Technical Support in order to obtain the correct firmware and special instructions, PRIOR to following the steps below. Failure to do so may result in unexpected operation of your AP9635 Network Management Card 2.NOTE: If you wish to downgrade from v6.X.X to v5.1.X firmware on NMC2, please make sure you review Knowledge Base Article FA167693 prior.1. Identify and locate the firmware modules described in the preceding instructions for FTP.2. Use an SCP command line to transfer the AOS firmware module to the Management Card. The following example uses xx to represent the version number of the AOS module: scp apc_hw05_aos_xx.bin apc@158.205.6.185:apc_hw05_aos_xx.bin 3. Use a similar SCP command line, with the name of the application module, to transfer the application firmware module to the Management Card. NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure. Alternatively, you can use APC's INI utility which is downloadable and explained in Knowledge Base Article FA156117.NOTE: Never remove a Management Card before it completes the reboot cycle. Doing so will damage the Management Card. The reboot cycle is complete when the status LED turns off and after 20 seconds turns solid green or slowly flashing Network Management Card 3Use an SCP command line to transfer the .nmc3 file to the Management Card. The following example uses xx to represent the version number of the application module: scp apc_hw21_SU_xx.nmc3 apc@158.205.6.185:apc_hw21_SU_xx.nmc3 NOTE: To upgrade multiple Management Cards using an FTP client or using SCP, write a script which automatically performs the procedure. Alternatively, you can use APC's INI utility which is downloadable and explained in Knowledge Base article FA156117.NOTE: Never remove a Management Card before it completes the reboot cycle. Doing so will damage the Management Card. The reboot cycle is complete when the status LED turns off and after 20 seconds turns solid green or slowly flashing amber.

Question 7

How to Upgrade Firmware on Smart-UPS Models Using the Firmware Upgrade Wizard

Accepted Answer

Introduction: Most Smart-UPS models support user-upgradeable firmware. Firmware upgrades can provide product improvements, feature enhancements, and cybersecurity remediations throughout the product lifecycle. Important: During a firmware upgrade, battery backup is unavailable. Equipment powered by the UPS will not be protected from power failures. Depending on the UPS model, UPS output power may need to be turned off before the firmware can be upgraded. The Firmware Upgrade Wizard will advise you on how to proceed.Certain UPS models do not support firmware upgrade using a USB connection. To upgrade the firmware of these UPS units using the Firmware Upgrade Wizard, a local connection via serial cable must be used. The serial cable supplied with the UPS must be used.Ensure the computer remains powered on and the communication connection between the UPS and the computer is maintained throughout the firmware upgrade process.Schneider Electric recommends upgrading Smart-UPS On-Line SRT, XP, and XU firmware only when instructed by Schneider Electric Technical Support or when advised through an official Schneider Electric communication. To view different UPS firmware upgrade methods, refer to FA164737. Applicable models: Click to expand and view details The following UPS model families support user-upgradeable firmware using the Firmware Upgrade Wizard. Supported UPS model families CSHSCLSMCSMTSMTLSMXSRTSRTLXPXU As support for additional UPS models is added over time, the list below identifies UPS models that are not currently supported by the Firmware Upgrade Wizard. UPS models that do not support user-upgradeable firmware using the Firmware Upgrade Wizard Smart-UPS Ultra 5, 8, and 10kVA modelsSmart-UPS Ultra Modular models with the prefix SRYLUPS models with the prefixes SU, SUA, SUM, SURT, SURTA, and SURTDSMX750, SMX1000, and SMX1500 UPS models with ID 11 running UPS firmware version 02.x or earlierDevices not supported in the current release: SMT750RMJ1U, SMT2200, SMC2200XLI-BR Firmware Upgrade: The Firmware Upgrade Wizard automatically identifies the connected UPS and selects the appropriate firmware file. Note: Downgrading firmware to an earlier version is not recommended. Important: Do not disconnect the UPS communication cable, reboot the computer, or attempt to turn off the UPS during the firmware upgrade.If a previous version of the Firmware Upgrade Wizard is installed, uninstall it before downloading the latest version. Step 1 Download the latest version of the Firmware Upgrade Wizard ZIP file, and the Firmware Upgrade Wizard User Guide. Step 2 Important: Verify the MD5 checksum of the downloaded Firmware Upgrade Wizard ZIP file. The current MD5 checksum is 47c9f0ebc3482359d16c0ebc1798eae9. Open Command Prompt.Change the directory to the folder where the downloaded Smart-UPS_Firmware_Upgrade_Wizard_v4.3.8v12a.zip was saved: This is typically done using the "cd" command.For example, if the Smart-UPS_Firmware_Upgrade_Wizard_v4.3.8v12a.zip file was saved to the Downloads folder, the command may be: "cd C:\Users\Username\Downloads", or "cd Downloads" Run the command "certutil -hashfile Smart-UPS_Firmware_Upgrade_Wizard_v4.3.8v12a.zip MD5"Verify that the displayed MD5 checksum exactly matches the value shown above.For example: Step 3 The Firmware Upgrade Wizard ZIP file contains the application and all required UPS firmware files. The accompanying User Guide provides detailed prerequisites, instructions, and screenshots. Follow the Firmware Upgrade User Guide to update the firmware of your UPS. Depending on the UPS model and upgrade path, the firmware upgrade process may take approximately 25 to 30 minutes. If the firmware upgrade does not complete, contact Schneider Electric Technical Support. Provide the UPS model, serial number, UPS ID, and current firmware revision.

Question 8

PowerLogic PM5000 Series (PM51xx, PM53xx, PM55xx, PM56xx) Modbus Register List

Accepted Answer

IssueRegister list for Modbus communication Product LinePM5110, PM5330, PM5340, PM5560, PM5563, PM56xx, PM57xx EnvironmentPower Meter Communications Modbus Register List CausePM5000 series register list is needed for Modbus communication ResolutionSee the attached documents for Register List. There are 2 files. One for the PM5100 and PM5300 series and the other file is for the PM5500, PM5600, and the PM5700 series.

Question 9

What is meant by Symmetrical and Asymmetrical breaking currents?

Accepted Answer

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 breaking current is the RMS value of AC component of short circuit current at the instant of separation of the contacts. It does not take into account the DC offset.- Asymmetrical breaking current is is the RMS value of the combined sum of the DC and AC components of the short circuit current at the instant of separation of the breaker contacts. This DC offset is of decaying nature which is dictated by the time constant of the system. As shown in the above picture the DC offset decays in a few cycles and is left only with the symmetrical component. Hence if a breaker has to close before the DC component decays, then the breaker’s breaking capacity is to be calculated for the asymmetrical current at the time of breaking.

Question 10

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

Accepted Answer

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 factor of 1.5In Where In = Q/ ( Square root of 3 ) Un Q = Capacitor Power Un = Nominal Voltage Choose the Micrologic with delay time selection, so that the Circuit Breaker does not trip due to initial high inrush current. Also to be taken into account are the parameters like supply frequency, operating voltage & harmonics level of the power system for such application. Refer the attached sheet for further details for selection of Circuit Breaker for Capacitor duty application. Note: Use the phase barrier between the phases in Circuit Breaker to prevent flashover due to heavy inrush current.

Question 11

In a 3 phase system, why does the meter still show voltage reading on one of the phases even after breaking the phase circuit?

Accepted Answer

Issue:Testing phase loss on a meter doesn't result in a null voltage reading.Environmnet:EasyLogic Series Power MetersPowerLogic Series Power MetersResolution:The voltage seen is what we call "phantom voltage", its a known phenomenon with all high impedance power meters. These phantom voltages are normal artifacts of the design and should not pose any safety concerns to the end user.In some cases it'll probably disappear by power cycling the meter. Most power meters are not designed to monitor phase loss, as it'll always assume the presence of the 3 phases and the neutral, depending on your parameters setup. External devices are used to detect such occurrences, like phase control relays.

Question 12

what are the benefits of short circuit current limiting?

Accepted Answer

Benefits of limiting:Long installation service lifeThermal effectsLower temperature rise at the conductor level, hence increased service life for cables and all components that are not self-protected (e.g. switches, contactors, etc.)Mechanical effectsLower electrodynamic repulsion forces, hence less risk of deformation or breakage of electrical contacts and busbars.Electromagneticeffects Less interference on sensitive equipment located in the vicinity of an electric circuit.Savings through cascading Cascading is a technique derived directly from current limiting: downstream of a current-limiting circuit breaker it is possible to use circuit breakers of breaking capacity lower than the prospective short-circuit current (in line with the cascading tables). The breaking capacity is heightened thanks to current limiting by the upstream device. Substantial savings can be achieved in this way on switchgear and enclosures.Discrimination of protection devices The circuit breakers' current limiting capacity improves discrimination with the protection devices located upstream: this is because the required energy passing through the upstream protection device is greatly reduced and can be not enough to cause it to trip. Discrimination can thus be natural without having to install a time-delayed protection device upstream.

Question 13

Why is Neutral and Earth (Ground) Connection forbidden Downstream from Main Panel?

Accepted Answer

The question is often asked what is the maximum voltage permitted between the Neutral and Earth (Ground) conductor and if the Neutral and Earth can be bridged to achieve a zero value.This can be a difficult topic, in fact in many cases it can be dangerous. As you will see from the attached document, there are many reasons why it is not allowed.

Question 14

What is the definition of Automatic source-changeover system (or ATSE: Automatic Transfer Switching Equipment) ?

Accepted Answer

An automatic controller may be added to a remote-operated source-changeover system. It is possible to automatically control source transfer according to programmed (dedicated controllers) or programmable (PLC) operating modes. These solutions ensure optimum energy management

Question 15

Which RL(lead resistance from CT to relay) is to be used in Knee Voltage calculation if Current Transformers (CTs) used in High Impedance Restricted Earth Fault are at different distances from relay?

Accepted Answer

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 relayEnvironment:Protection Function ANSI 64refHigh impedance differentialSepam 80 Current Transformer requirementResolution:In any application where the high impedance differential is used, all the CTs must have the following:- the same ratio,- the same magnetizing curve (same minimum Vk),- the same maximum Rct (current Transformer secondary winding resistance),- if the relevant CTs are not at the same distance from the relay, take the maximum RL.Attached Cahier Technique no.194 for more information about high impedance calculation

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