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Alpha Lomain manual available for free PDF download: Technical Manual
Alpha Lomain Technical Manual (30 pages)
Ni-Cd Pocket Plate Battery
Brand:
Alpha
| Category:
Battery Pack
| Size: 0 MB
Table of Contents
Table of Contents
4
Safety Notes
6
Battery Safety Precautions
7
1 Introduction
9
Fig. 1, Design of an Alpha Lomain Ni-CD Pocket Plate Cell
10
Alpha Lomain Theory of Operation
11
Fig. 2, Detail of Plate Design
11
Fig. 3, Battery Vent
12
Fig. 4, Exploded View, Battery Vent
12
Fig. 5, Smaller Capacity Batteries
13
Fig. 6, Larger Capacity Batteries
13
Safety Terminal
14
Electrode Frame
14
Positive and Negative Electrode Plate
14
Fig. 7, Terminal Cross-Section
14
Fig. 8, Electrode Strip
14
Electrolyte
15
Fig. 9, Strips Connected
15
2 Battery Range and Applications
16
3 Electrochemistry of Ni-CD Batteries
16
4 Operating Features
17
Capacity
17
Cell Voltage
17
Internal Resistance
17
Impact of Temperature on Cell Performance and Available Capacity
18
Fig. 10, Nicd Vs. Lead-Acid Performance as a Function of Temperature
18
Fig. 11, Discharge Curve of 45A X 4 KGL225P Post-2224H Float Charge @ 50°C
18
Impact of Temperature on Lifetime
19
Short-Circuit Values
19
Open Circuit Loss
19
Fig. 12, Battery Life at Higher Temperatures as Percentage of +25°C Lifetime
19
Cycling
20
Fig. 13, Cycle Life Vs. Depth of Discharge as a Percentage of Rated Capacity (20°C)
20
Topping up Interval
21
5 Sizing the Batteries for Standby Applications
22
Voltage Window
22
Load Profile
22
Ambient Temperature
22
Recharge Time and State of Charge
22
Aging
22
Floating Effect -Voltage Depression
23
6 Charging
24
Constant Voltage Charge
24
Charge Acceptance
25
Fig. 14, Available 5-Hour-Capacity of 5 X KGM 140P after 15 Hours Charging at 1.43 V/Pc at 30°C
25
Fig. 15, Total Discharge Time 4:43H = 94% of Nominal Capacity
25
Fig. 16, Available 5-Hour-Capacity of 5 X KGL 665P after 15 Hours Charging at 1.43 V/Pc at 30°C
25
Fig. 17, Total Discharge Time 4:15H = 85% of Nominal Capacity
25
Charge Efficiency
26
Temperature Influence
26
7 Commissioning
27
Commissioning with Constant Current
27
Commissioning with Constant Voltage
27
8 Charging in Operation
28
Two Level Charge
28
Single Level Charge
28
9 Periodic Maintenance
28
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