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VRLA Valve Regulated Lead Acid Batteries

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VRLA Valve Regulated Lead Acid Batteries Motors I Automation I Energy I Transmission & Distribution I Coatings Batteries - VRLA Valve Regulated Lead Acid Batteries User Manual User Manual Series: Sealed Batteries Language: English Document: 10005922959 / 01 Publication Date: 08/2019 Summary of the Revisions The information below describes the revisions made to this manual. Version Revision Description - R00 First edition - R01 General Revision Summary 1 SAFETY INSTRUCTIONS ....................................................................... 1-1 1.1 QUALIFIED PERSONNEL ................................................................................................................1-1 1.2 SAFETY WARNINGS IN THE MANUAL ..........................................................................................1-1 2 GENERAL INFORMATION .....................................................................2-1 2.1 CONSTRUCTION FEATURES .........................................................................................................2-1 2.2 RECEIVING AND STORAGE .......................................................................................................... 2-2 2.3 DISPOSAL ....................................................................................................................................... 2-3 3 INSTALLATION AND OPERATION .........................................................3-1 3.1 INSTALLATION PRECAUTIONS ..................................................................................................... 3-1 3.2 INSTALLATION METHOD .............................................................................................................. 3-1 3.3 WORKING PRINCIPLE ................................................................................................................... 3-2 3.3.1 Electrochemical .................................................................................................................... 3-2 3.3.2 Oxygen Recombination ........................................................................................................ 3-2 3.4 BATTERY CHARGE, DISCHARGE & SERVICE LIFE .................................................................... 3-3 3.4.1 Charge Characteristics ........................................................................................................ 3-3 3.4.2 Charge Curve on Float Duty ................................................................................................ 3-3 3.4.3 Relation Between Float Voltage and Ambient Temperature .......................................... 3-3 3.4.4 Equalizing Charge ................................................................................................................. 3-4 3.4.5 Charge Curve for Cyclic Use ............................................................................................... 3-4 3.4.6 Supplementary Charge ........................................................................................................ 3-5 3.4.7 Discharge Characteristic ..................................................................................................... 3-6 3.4.8 Life Characteristic on Float Duty ........................................................................................ 3-7 3.5 RECORDS ........................................................................................................................................ 3-8 4 TROUBLESHOOTING .............................................................................4-1 5 MAINTENANCE .......................................................................................5-1 6 TECHNICAL SPECIFICATIONS ..............................................................6-1 Summary Safety Instructions 1 SAFETY INSTRUCTIONS This manual contains the information necessary for the correct use of the VRLA Battery. The following instructions are extremely important for a good performance of your VRLA Battery and should be thoroughly observed during the storage, maintenance and operation of the system. Failure to comply with the product instructions may cause operating accidents, damages to the environment, to the battery and to the devices connected to it, in addition to voiding the warranty. 1.1 QUALIFIED PERSONNEL All the installation, commissioning, operation and maintenance procedures must be performed by trained and 1 qualified personnel. During the execution of maintenance jobs, the legal provisions in force in the country of installation must be respected. Maintenance and operation must be carried out exclusively by qualified personnel familiarized with the characteristics of the panel, in compliance with all applicable IEC safety directions and standards of other technical entities, also observing other paramount instructions. The procedures of NR-10 must also be followed. It is recommended to request the intervention of personnel from WEG technical assistance to perform maintenance and repair jobs. 1.2 SAFETY WARNINGS IN THE MANUAL DANGER! Not following the procedures recommended in this warning can lead to death, serious injuries and considerable material damages. ATTENTION! It identifies the risks of unsafe operations that may cause minor injuries or material damages. NOTE! The text aims at providing important information for the full understanding and proper operation of the product. ATTENTION! Make sure the power is disconnected before installation. Otherwise, electric shock may cause serious injury or death. Always work with the equipment disconnected. When performing any tests, maintenance or repairs, first remove the power supply and then disassemble the equipment. NOTE! In case of doubt about this product / manual, contact our Technical Assistance department. Capital cities and metropolitan areas: +055 4003-8201 / Other locations: +055 0800 701 0701. VRLA Batteries | 1-1 Safety Instructions 1 1-2 | VRLA Batteries General Information 2 GENERAL INFORMATION In order to correct and safely install and use the VRLA Batteries, it is necessary to read this technical manual carefully. Pay attention to safety during installation so as to avoid accidents. In case of any questions concerning this Technical Manual or technical problems, please contact WEG or our nearest Authorized Service. DANGER! Do not touch any uninsulated terminal or connectors to avoid electric shock. Gases generated from explosion may cause eye injury or even blindness. It is prohibited smoking or producing sparks and flames near VRLA Batteries. Vitriol acid can cause blindness or serious burns. Do not loosen the safety valves. Keep batteries in a well-ventilated environment when in operation. Maintenance and repair of VRLA Batteries should be performed by specialized technicians. 2.1 CONSTRUCTION FEATURES 2 1. Service life time. The robust lead-calcium grids ensure moderate corrosion, providing a service life time of 15 years on stand-by duty and under optimal conditions of floating charge and operating temperature. 2. Excellent characteristics of high-efficiency discharge. VRLA batteries are equipped with low electrical resistivity plates and conductive parts, which reduce the internal ohmic resistance, ensuring high discharge efficiency. 3. Construction with Triplex sealing. The valve-regulated sealed construction with triplex reinforcement in the sealing of the terminals and poles inhibits the electrolyte leakage and ensures the tightness of the batteries under normal operating conditions, preventing the ingress of external air. 4. Low self-discharge. Due to the use of lead-calcium alloy grids, VRLA batteries provide low self-discharge and high reliability performance. At ambient temperature, the monthly self-discharge of the batteries is approximately 3 % of its rated capacity. 5. High Safety. VRLA batteries are provided with explosion-proof safety valves to inhibit gas production. They are also manufactured to inhibit internal flame in the presence of sparks. 6. High efficiency in the Recharge. Exclusive formulas are used in the lead paste composition of the positive plates to ensure that the batteries can be easily recharged. 7. Absence of Electrolyte Stratification. Special additives are used in the electrolyte to provide a gelatinous consistency without drainage, leakage or stratification, allowing homogeneous reactions on the surface of the plates. VRLA Batteries | 2-1 General Information Positive pole Intercell connector Valve Negative pole Sealing washer Ring Cover Negative plate Separator Positive plate 2 ABS container case Figure 2.1: Sealed VRLA battery construction 2.2 RECEIVING AND STORAGE Visually inspect the package when opening it, looking for signs of tampering or damage to the VRLA Batteries during transportation. Check that the information on the product nameplate corresponds to the purchased model. If any problem is detected, immediately notify the carrier. Open the packaging near the installation site and check the accessories accompanying the product. Check carefully to ensure that there is no damage or leaks in the battery container cases. If any battery falls or if any container case suffers an abnormal impact, please report it to WEG Technical Assistance or the nearest Authorized Service. If batteries are not immediately installed after the delivery, it is necessary to store them in a clean, ventilated, dark location, with temperature between 5 °C and 30 °C (41 °F and 86 °F). When stored, the battery capacity will gradually decrease due to the self-discharge. Do not store the batteries for more than twelve months, as this will affect their performance
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