Related Manuals for C&D Technologies UPS12-100MR
Summary of Contents for C&D Technologies UPS12-100MR
- Page 1 TECHNICAL BULLETIN 41-7546 Valve Regulated Lead Acid Battery 20 to 200 ampere-hours capacity 10 Year VRLA Battery Periodic Maintenance Instructions 41-7546/0213/CD www.cdtechno.com...
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Page 2: Table Of Contents
Table of Contents General Information Battery System General Description Series string ........................3 Parallel string ........................3 VRLA Battery Safety Concerns Electrical Hazards .......................4 Disposal ..........................4 Chemical Hazards .......................4 Fire, Explosion and Heat Hazards..................4 Handling Hazards .......................5 Preparation for VRLA Battery Periodic Maintenance ...............5 Required Maintenance Tools and Equipment ..............5 Periodic Maintenance Tasks and Schedule ................5 Quarterly Checks ........................6... -
Page 3: General Information
C&D VRLA BATTERY SYSTEM For example, as shown in Figure 2, two of each 48 volt 90 ampere hour capacity strings can be PERIODIC MAINTENANCE AND connected in parallel to provide a nominal 48 volts at 180 ampere hours. TROUBLESHOOTING GUIDE General Information This document provides a guide for use during periodic maintenance and troubleshooting of the... -
Page 4: Electrical Hazards
Electrical Hazards Disposal Battery systems present a risk of electrical shock Lead acid batteries are to be recycled. Batteries and high short circuit currents. The following contain lead and dilute sulfuric acid. Dispose of precautions should be observed when maintaining in accordance with Federal, State and local VRLA batteries: regulations. -
Page 5: Handling Hazards
Caution A test of the individual unit resistance, impedance or conductance, while optional, is also recommended Do not attempt to remove the vents (valves) from on a periodic basis. This data and its trend can be the 10 YEAR VRLA battery or add water. This a valuable aid in troubleshooting the system and presents a safety hazard and voids the warranty. -
Page 6: Quarterly Checks
Quarterly Maintenance Optionally perform the 10 sec. high rate (e.g. 100 amp) load test to assure the The following checks should be completed individual batteries are functional. quarterly. Optionally measure and record the resistance/impedance/conductance of Assure the battery room is clean, free of the individual units to trend the condition of debris and well lighted. -
Page 7: Ambiant And Battery Temperature
Environment Ambient and open circuit. For cleaning, use a cloth moistened in a solution of bicarbonate of soda and water. Battery Temperature Do not use cleaners of unknown solutions such While the VRLA battery will function at extremes as window or glass cleaners and solvents. Use of of temperature, it is rated at 77°F (25°C) and the certain petroleum based cleaners will damage the ideal operating temperature range for the 10... -
Page 8: System Float Voltage
Battery System Float Extended overcharging will cause excessive float current, corrosion of the plate grids, Charging Voltage gassing and drying of the limited amount of electrolyte. The recommended battery system float This constitutes premature aging of the battery charging voltage for the 10 Year VRLA and loss of capacity. -
Page 9: Float Charging Current
was 2.25 v/c, the ground fault would be will not float at 13.8 VDC but may vary from 13.3 approximately 60 cells (ten 12 volt units) from to 14.5 and still be normal. If the system is equalized the battery system output terminal. for 24 hours upon installation, or after with an extended time in float service, this spread in float Battery System... -
Page 10: High Rate Momentary Load Test
High Rate Momentary Load Test When an AC ripple voltage appears across a string of batteries it will be subdivided across the The high rate momentary load test is a functional test of the individual battery within the series string. It does not replace a capacity test but it does indicate if the battery is functional at least up to the ampere capability of the test load. -
Page 11: Performance Testing
The connection hardware may loosen somewhat Continuous operation at elevated temperatures with time and repeated cycling of the battery system. will result in accelerated aging of the battery. The connection hardware should be retorqued to For each 18° (10°C) above 77°F (25°C) the the value indicated for the battery part number battery will age at twice the normal rate. -
Page 12: Table 1-Battery System Symptoms And Solutions
TABLE 1-VRLA Battery Symptoms and Solutions Symptom Possible Causes Possible Result Corrective Actions CAPACITY TEST RESULTS Reduced operating Normal wear out Eventual failure to Replace battery system time at 77°F support the load when at 80% of rated with smooth voltage followed by potential capacity or before. - Page 13 TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Symptom Possible Causes Possible Result Corrective Actions High current High charging Limit recharge current. This combination can recharge. voltage. lead to thermal Reduce to within runaway. specifications. Shorted cells. Replace shorted cells and evaluate total string. VISUAL BATTERY CHECKS Cover/container...
- Page 14 TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Symptom Possible Causes Possible Result Corrective Actions Rotten egg odor. Possibly caused by Odor is a product of Replace the battery high temperature extended thermal system and correct the environment, runaway. items leading to the overcharging, thermal runaway.
- Page 15 TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Symptom Possible Causes Possible Result Corrective Actions DC VOLTAGE CHECKS (CONTINUED) System float voltage Charger output set Undercharging will Reset the charger less than 2.25 v/c incorrectly. result in a gradual loss output voltage to the average at 77°F of operating time and recommended value.
- Page 16 TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Possible Result Corrective Actions Symptom Possible Causes DC VOLTAGE CHECKS (CONTINUED) DC voltage measured Damaged battery Personnel shock hazard Determine the source between either of the container allowing which could result in of the ground fault and battery system output electrolyte to serious injury or...
- Page 17 TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Symptom Possible Causes Possible Result Corrective Actions FLOAT CHARGING CURRENT CHECKS Float current to the A battery or Failure to support the Replace the battery with string is zero. connection in the load. If an internal arc the open cell or repair series string is open.
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Page 18: Connection Resistance
TABLE 1-VRLA Battery Symptoms and Solutions (Continued) Symptom Possible Causes Possible Result Corrective Actions Terminal voltage is Battery is discharged Reduced Charge and retest significantly below or battery conductive operating time. battery or replace as the minimum voltage path, plate grid or required. -
Page 19: Table 2-Battery Parameters By Model Number
Bolt Size Retorque Circuit Voltage Watts/Cell to rate to 1.75 Ampere rate Type @ 60Hz (Ω) (Mhos) in.-lbs. Voltage (VDC) 1.67 VPC* to 1.75 VPC UPS12-100MR "L" #10-32 12.9 13.5-13.8 90.9 0.0060 Inserted #10-32 12.9 0.0060 1007 UPS12-150MR 13.5-13.8 Inserted #10-32 12.9... -
Page 20: Appendix 1-Vrla Battery Periodic Maintenance Data Recording Form
C&D Valve Regulated Lead Acid Batteries Historical Data and System Status Company: System Float Changing Voltage: Location: Date Batteries Installed: Supervisor in Charge: Phone: Load (K.W. or Ampere): Type Charger/Load: System Equalize Voltage: Amps: Unit Part Number: Cells /Unit: Room Temperature: Unit Temperature Range: Date: Date:...
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