Dowload NXRT Battery Inspection Service Bulletin
Contents
1. Anderson connector Connector red multimeter lead to label and black multimeter lead to Wwww xpcc com XPC USA Denver CO Tel 800 582 4524 sales xpcc com gt nN E mA XPC EMEA Rotterdam NL emea xpcc com Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN Model UPS NXRT 1000 NXRT 1500 NXRT 2000 NXRT 3000 Model EBP NXRT EBP1 NXRT EBP2 NXRT EBP3 NXRT EBP3 baie 36VDC 48VDC 96VDC 96VDC Full Charge gt 38VDC gt 51VDC gt 100VDC gt 100VDC Voltage If the batteries in the tray fail visual inspection or string values are below full charge values contact Xtreme Technical Support at 1 800 582 4524 If you cannot tell if the batteries are swollen from visually inspecting the battery tray continue to the next step 7 Remove each necessary Phillips head screw on the battery tray s top cover and remove top cover www xpcc com XPC USA Denver CO Tel 800 582 4524 sales xpcc com oC nN E mA XPC EMEA Rotterdam NL emea xpcc com Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN 8 Visually inspect the batteries Check to see if the batteries are swollen or if corrosion is present on the terminals When inspecting the batteries check and make sure that all the wires are connected to the terminals Example above of non temperature affected batteries Example above of temperature affected batteries shown without wires www xpcc com X C T2. FR A XPC USA Denver CO Tel 800 582 4524 sales xpcc com XPC EMEA Rotterdam NL emea xpcc com Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN Temperature Overharged affected battery Non affected battery IC TREME MAINTE MANE FAT SEALED LEAG ACIG BATTERY MAINTENAN E FREE D LEAD ACI ATTERY j 6 FM 7 2 CAUTION MUST GE RECYCLED OF DISPOSED PROPERLY DO NOT SHORT CIRCUIT BATTERY TERMINAL If the batteries do not pass visual inspection contact Xtreme Power Technical Support at 1 800 582 4524 9 After visual inspection passes replace top cover and secure the necessary screws 10 Insert battery s tray into the UPS or EBP Replace the necessary screws to secure the battery tray into the UPS www xpcc com gt C a mA Powe 2r Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN 11 Replace front bezel by aligning the metal guides with the Battery Pack slots Slide the bezel to the left to snap into place Secure front bezel screw ary nT E SC TREME Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN 12 Replace right front bracket ee sien 1524 ales expec gt L TREME Power Conversion
3. CONVERSION TECHNICAL BULLETIN 4 If SNMP Card is installed A Run battery test See arrow 1 B Modify critical capacity alarm to better alert when batteries are low The default is 10 and can be changed to 30 See arrow 2 UPS Properties UPS Communication Type Megalec hi Number of Batteries 6 Battery Full Charge Voltage V 2 267 Battery Exhausted Charge Voltage V 4 667 Date of last battery replacement yyyy mmvdd UPS Recorded UPS Data Log 1 minute est UPS Test UPS every None bs Start Time of UPS Test hh mm UPS Test Type 10 Second Test arming Threshold Value Time out after loss of connection 30 seconds Critical Load B Critical Temperature C 70 0 Critical Capacity 10 WWW xpcc com 3 XPC USA Denver CO Tel 800 582 4524 sales xpcc com 2 C E mA E XPC EMEA Rotterdam NL emea xpcc com Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN NXRT Battery Inspection Procedure This procedure outlines the steps needed to inspect the battery tray or batteries in the battery tray for the NXRT Series Model UPS NXRT 1000 NXRT 1500 NXRT 2000 NXRT 3000 Model EBP NXRT EBP1 NXRT EBP2 NXRT EBP3 NXRT EBP3 The UPS will be online supporting the load during the inspection This procedure must be performed when the UPS system is fully charged no battery discharges within 24 hours The load will be susceptible to Utility outages during the time that the bat
4. XTREME POWER CONVERSION TECHNICAL BULLETIN Temperature affects on battery charging Product type NXRT UPS internal battery and battery pack modules Model UPS NXRT 1000 NXRT 1500 NXRT 2000 NXRT 3000 Model EBP NXRT EBP1 NXRT EBP2 NXRT EBP3 NXRT EBP3 Purpose The purpose of this bulletin is to notify NXRT UPS system customers of an issue found in regard to a small number of NXRT systems exposed to local ambient temperatures gt 77 F for a periods of time The Problem There are battery packs with swollen or failed batteries as a result of overcharging due to high ambient temperatures see photos below As batteries age the problem worsens under these conditions and battery replacements are recommended Room temperatures may be below 77 F but temperature hot spots may be present close to the UPS and battery module areas If temperature hot spots are present at any time then one or more batteries in the string may start to fail The internal battery impedance changes as the battery fails increasing the charge current through the affected battery and all other batteries in the string This creates a charging current imbalance higher current for some batteries and less for others yielding more failures over time NXRT EBP chargers are often connected to the UPS systems compounding situations of imbalanced charging currents as described above by increasing current for a greater imbalance therefore accelerating the rate failure Each NXRT
5. battery pack EBP has its own 2A charger built into the NXRT EBP These NXRT EBP chargers are powered from an external AC source via an IEC 5 15P power cord and should be connected only on every third NXRT EBP Do not connect the IEC 5 15P power cord into a UPS receptacle Please refer to the current NXRT user manual for more details Temperature Overharged affected battery Non affected battery CTR emc MAINTENANCE FREE SEALED LEAD ACID BATTERY MAINTENAN e FREE SEALED LEAD ACI TTERY 6 FM 7 2 P CAUTION MUST BE RECYCLED OR ey DISPOSED PROPERLY fF AZ aay LPR DO NOT SHORT CIRCUIT A BEY Cay BATTERY TERMINAL Pb www xpcc com XTREME POWER CONVERSION TECHNICAL BULLETIN The Solution As a result of Xtreme Power s analysis of the problem the following customer actions are recommended for each NXRT system onsite 1 Remove all AC power cords connected to the EBP s Contact Xtreme Power Technical support at 800 582 4524 for systems with over 4 NXRT EBP s 2 Xtreme Power recommends ambient temperature levels of less than 77 F around each the NXRT UPS and battery pack s Make necessary steps to lower ambient temperatures if needed 3 Visually inspect battery trays and batteries for each battery tray in the system Refer to NXRT BATTERY INSPECTION PROCEDURE for details on how to perform the needed checks Replace batteries over three years of age www xpcc com CTR EME i IN Y r SIO n XTREME POWER
6. s to inspect while the UPS will have only one The procedure is the same for all www xpcc com XTREME POWER CONVERSION TECHNICAL BULLETIN 1 Make any needed steps to access the UPS s right front bracket Remove 4 Phillips head screws to remove the UPS s right front bracket 2 Remove the Bezel set screw ek ane as r CO Tel 800 582 4524 sales xpcc com gt i E mA E cin z gt E ig i a ae ae 7 a tterdam NL emea xpcc com Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN 3 Slide front bezel to the right and let hang by front panel cable 4 Remove the necessary outer sets of screws to slide out the desired battery tray Caution the battery tray is approximately 45lbs ca E tienes C TREME Power Conversion XTREME POWER CONVERSION TECHNICAL BULLETIN 5 Visually inspect the battery tray Check to see if the battery tray and or batteries are deformed due to swollen temperature affected batteries 6 If possible measure the voltage at the Anderson connector using a multi meter at the back of the battery tray Verify polarity and voltage Acceptable voltage levels will vary depending on the model NXRT battery tray that is being inspected Reference the table on page 7 of this procedure for full charge voltage levels to compare against the meter reading If a multimeter is not available then perform visual inspection only Verify the multimeter is on VDC setting
7. tery s are not installed in the UPS system If EBP s are present perform checks on the EBP s first If XBDM s Xtreme Bypass Distribution Module are present transfer the loads to bypass in accordance with XBDM user manual Transfer the XBDM back when the battery inspection procedure is completed If the system is in alarm please contact Tech Support at 1 800 582 4524 or techsupport xpcc com before commencing this procedure The procedure can also be performed with the UPS turned off with the AC power cord unplugged from Utility Caution Please read through the procedure before attempting the battery inspection procedure If you are uncomfortable or unable to perform any of the tasks please contact a qualified technician Batteries present a risk of electric shock and high short circuit current The following precaution should be observed when working on batteries e Remove watches rings or other metal objects e Use tools with insulated handles e Use protective eye protection when individual batteries are exposed e Use proper lifting techniques with battery trays Battery trays can weigh up to 45lbs when batteries are installed e Follow the procedures as shown and call Xtreme technical support with questions at any time before or when performing this procedure e Contact Xtreme Power with questions to return old batteries to Xtreme Power NXRT EBP3 inspection will be outlined below NXRT EBP s have two strings of batterie
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